药明康德合成
Mitsunobu反应
经典化学合成反应标准操作Mitsunobu 反应编者：谢军药明康德新药开发有限公司化学合成部目录1．前言 (2)2．醇的翻转 (3)2.1 Mitsunobu 法醇的构型翻转合成方法示例 (7)3．Mitsunobu 醚化反应 (8)3.1 Mitsunobu 法醚的合成方法示例 (9)4．Mitsunobu 氨基取代反应 (10)4.1 Mitsunobu 法利用苯磺酰胺合成胺方法示例 (13)4.2 Mitsunobu 法利用DPPA合成伯胺方法示例 (13)4.3 Mitsunobu 法分子内关环合成相应的环状胺方法示例 (14)4.4 Mitsunobu 法合成丙二烯方法示例 (14)5．Mitsunobu 硫代反应 (16)5.1 Mitsunobu 法合成硫醚方法示例 (16)6．Mitsunobu 卤代反应 (18)6.1 Mitsunobu 法合成卤代物方法示例 (18)7．其他手性翻转试剂 (20)1. 前言1967年，Oyo Mitsunobu 报导了在三苯膦（PPh3）和偶氮二甲酸二乙酯（DEAD）作用下酸和醇缩合成酯的新方法1。
当底物为仲醇的时候，与羟基相连的碳原子的构型会发生翻转。
经过多年的研究和发展，形成了一大类合成方法，我们称之为Mitsunobu 反应。
这类反应被广泛应用在有机合成，特别是天然产物的合成中2。
2．醇的翻转在Mitsunobu 反应中，DEAD 和三苯膦首先生成一个活性的甜菜碱式中间体（betaine intermediate ），这个活性中间体夺取作为亲核试剂的酸的质子并同时活化醇，随后经过S N 2取代，得到手性翻转的酯；将得到的酯水解，其净结果是醇的构型翻转。
R O R OH Ar O23反应在很温和的条件下进行，通常反应温度是在0o C 到室温，大部分基团都不会影响反应。
但亲核试剂质子的pKa 值必须小于甜菜碱式中间体（betaine intermediate ）的pKa 值（～13），否则亲核试剂的质子不能被中间体（betaine intermediate ）夺取，反应不能进行。
醇的制备
药明康德内部保密资料
Page 2 of 61
经典合成反应标准操作—醇的制备
药明康德新药开发有限公司
1．羧酸酯和羧酸还原为醇 1.1 羧酸酯还原成醇 羧酸酯一般来说较易被还原伯醇，其常用的方法为金属钠和醇 Na-EtOH；金属氢化 物如氢化铝锂(LAH), 硼氢化钠（钾）等。其中金属氢化物是最为常用的还原剂。 1.1.1 金属钠和醇为还原剂（Bouveault-Blanc 反应） 本反应是将羧酸酯用金属钠和无水醇直接还原生成相应地伯醇， 主要用于高级脂肪 羧酯的还原。 由于催化氢化和氢化铝锂的广泛应用，此法在实验室中已经很少采用，但是因为其 简便易行，在工业上仍然广泛应用。Bouveault-Blanc 反应的历程可能如下：
O R O + Na O R C O OH O R O
Na
O R C H O
O R OH
Na
O R C H
OH R
H O H
Na
H R H O
H
H R H OH
1.1.1.1 金属钠和醇为还原剂（Bouveault-Blanc 反应）示例 1
O n-C11H23 OEt Na,EtOH toluene n-C11H23 OH
1.1.2 金属氢化物为还原剂 羧酸酯用 0.5 mol 的氢化铝锂还原时，可得到伯醇。
O R O R' O R H
LiAlH4 LiAlH4ຫໍສະໝຸດ O RAlH3 R
O
H
-R'OH
O R' O R AlH3
O R'
R
OH
如仅用 0.25mol 并在低温下或降低氢化铝锂的还原能力， 可使反应停留在醛的阶段。 降低氢化铝锂还原能力可以提高还原反应的选择性。常用的的方法是加入不同比例 的无水三氯化铝或者加入计算量的醇，取代氢化铝锂中 1-3 个氢原子而成铝烷、或烷氧 基氢化铝锂。如用烷氧基氢化铝锂还原α,β-不饱和酯到α,β-不饱和醇，若单用氢化铝 锂还原，则得到饱和醇。 单纯使用氢化硼纳纳还原酯效果较差，若在 Lewis 酸如 AlCl3,ZnCl2 存在下，还原 能力大增，可顺利的还酯，甚至可还原某些羧酸。 由氢硼化钠和酰基苯胺在α-甲基吡啶中反应，生成的酰苯胺氢硼化钠是还原酯的 有效试剂。其优点：反应操作简便，不需要无水条件，反应选择性好。
药明康德有机合成路线设计擂台赛2019第六期竞赛
药明康德有机合成路线设计擂台赛2019第六期竞赛试题解析
竞赛介绍
1.竞赛题目：共6道题目,5道有机合成路线设计题,1道官能团转化题目
2.目标化合物主要为新分子，不限定起始原料，以考察设计思路为主
3.闭卷考试，总时长2小时
4.合成路线设计需要注明基本反应条件，包括反应试剂、酸、碱、催化剂
和合适的反应温度等，反应时间和溶剂可以忽略
5.设计路线使用的原料须为商业可得试剂
6.注意手性等立体化学要求，不能使用HPLC分离对映异构体，需要手性
合成。
经典合成反应标准操作药明康德目录
经典化学合成反应标准操作药明康德新药开发有限公司化学合成部编写前言有机合成研究人员在做化学反应经常碰到常规的反应手边没有现成的标准操作步骤而要去查文献，在试同一类反应时，为了寻找各种反应条件方法也得去查资料。
为了提高大家的工作效率，因此化学合成部需要一份《经典合成反应标准操作》。
在这份材料中，我们精选药物化学中各类经典的合成反应，每类反应有什么方法，并通过实际经验对每类反应的各种条件进行点评，供大家在摸索合成条件时进行比较。
同时每种反应的标准操作，均可作为模板套用于书写客户的final report，这样可以大大节省研究人员书写final report的时间，也相应减少在报告中的文法错误。
另外本版是初版，在今后的工作中我们将根据需要修订这份材料。
药明康德新药开发有限公司化学合成部2005-6-28目录1.胺的合成a)还原胺化b)直接烷基化c)腈的还原d)酰胺的还原e)硝基的还原f)叠氮的还原g)Hoffman降解h)羧酸通过Cris 重排2.羧酸衍生物的合成a)酰胺化的反应b)酯化反应c)腈转化为酯和酰胺d)钯催化的插羰反应e)酯交换为酰氨3.羧酸的合成a)醇氧化b)酯水解c)酰胺的水解d)腈的水解e)有机金属试剂的羰基化反应f)芳香甲基的氧化4.醛酮的合成a)Weinreb 酰胺合成醛酮b)醇氧化c)酯的直接还原d)有机金属试剂对腈加成合成酮5.脂肪卤代物的合成a)醇转化为脂肪溴代物通过PBr3 转化通过PPh3 与CBr4 转化HBr直接交换通过相应的氯代物或磺酸酯与LiBr交换、b)醇转化为脂肪氯代物通过SOCl2转化通过PPh3 与CCl4 转化HCl直接交换c)醇转化为脂肪碘代物通过PPh3 与I2 转化通过相应的氯代物或磺酸酯与NaI交换6.芳香卤代物的合成a)Sandermyyer 重氮化卤代b)直接卤代c)杂环的酚羟基或醚的卤代7.醇的合成a)羧酸或酯的还原b)醛酮的还原c)卤代烃的水解d)吡啶的氧化转位8.酚的合成a)Sandermayer 重氮化反应b)醚的水解c)Bayer-vigerlar 氧化d)硼酸的氧化9.腈的合成a)磺酸酯或卤代烃的取代b)酰胺的脱水c)芳卤代烃的氰基取代10.硝化反应11.醚的合成a)芳香醚的合成酚与烷基卤代烃的直接烷基化Mitsunobu 芳香醚化Buckwald芳香醚化b)脂肪醚的合成醇的醚化12.脲的合成a)胺与异腈酸酯的反应b)用三光气合成脲c)羰基二咪唑（CDI）合成脲d)对硝基苯酚碳酰胺合成脲13.烯烃的合成a)Wittig 反应b)羟基的消除c)Wittig-Horner 反应合成α,β-不饱和酯14.磺酸及磺酰氯的合成a)氯磺化反应合成磺酰氯b)从硫醇合成磺酰氯c)磺化反应15.氨基酸的合成a)Streck 反应合成b)手性氨基酸的合成16.偶联反应a)Suzuki Couplingb)Buckwald 芳胺化，芳酰胺化、c)Heck 反应17.Mitsunobu 反应a)醇的反转b)胺的取代18.脱羟基反应19.酮还原为亚甲基20.氨的保护及脱保护策略a)用碳酰胺作保护基b)苄基保护21.醇的保护及脱保护策略a)用硅醚进行保护b)其他醚类保护22.羧基的保护格氏反应---------------------------------------------------------------------------------------------------------1还原胺化---------------------------------------------------------------------------------------------------------2卤化反应---------------------------------------------------------------------------------------------------------2 Suzuki coupling-------------------------------------------------------------------------------------------------2磺化反应---------------------------------------------------------------------------------------------------------3酯化反应---------------------------------------------------------------------------------------------------------3水解反应---------------------------------------------------------------------------------------------------------3硝化反应---------------------------------------------------------------------------------------------------------4 n-BuLi------------------------------------------------------------------------------------------------------------4 LiAlH4还原-----------------------------------------------------------------------------------------------------4 POCl3的杂环氯代----------------------------------------------------------------------------------------------5 NaH---------------------------------------------------------------------------------------------------------------5 NBS---------------------------------------------------------------------------------------------------------------5m-CPBA ----------------------------------------------------------------------------------------------------------6EDC ---------------------------------------------------------------------------------------------------------------6用三光气成脲---------------------------------------------------------------------------------------------------7芳卤用n-BuLi 处理后与Weinreb 酰胺成酮-----------------------------------------------------------------7Boc 上保护OHH 2NHO OOOOOO OHN HO OHO O ABTo a solution of A (2.72 g, 13.9 mmol) and tetramethylammonium hydroxide pentahydrate (5.62 g, 31.0 mmol) in acetonitrile (270 mL) was added di-tert-butyldicarbonate (3.79 g; 17.4 mmol) and the resulting solution was allowed to stir 18 h at rt and concentrated. The residue was partitioned between Et2O/H2O; the phases were separated and the aqueous phase extracted twice more with Et2O. The aqueous phase was brought to pH 4 with solid citric acid and extracted with CHCl3 (3.x.100 mL). The organic extracts were combined, dried (Na2SO4) and concentrated to afford 2.58 g (63 percent) B as a white foam.ReturnBoc 脱保护OON HOOOOH 2NTert-Butyl 2-(2-methoxyphenoxy)ethylcarbamate (23.8 g, 89 mmol) in dichloromethane (10 ml) was cooled to 0 deg C and stirred as a mixture of trifluoroacetic acid: dichloromethane (1:1, 40 ml) was added dropwise. The mixture was allowed to warm to rt, stirred for 2 hours and concentrated in vacuo. The residue was taken back up in dichloromethane (100 ml) and the solution was washed with saturated aqueous sodium hydrogen carbonate (3*20 ml) and aqueous sodium hydroxide (10percent, 3*20 ml), dried (Na2SO4), filtered and concentrated in vacuo to provide 2-(2-methoxyphenoxy)ethylamine (13 g, 88percent yield) as a light yellow solid.Return格氏反应NCNNOA stirred mixture of magnesium turnings (23.6 g, 0.98 mol) and Et2O (200 mL) under nitrogen is treated with a crystal of iodine and about 5percent of a solution of bromoethane (56.3 ml, 0.75 mol) in Et2O (375 mL). When the reaction starts, the remainder of the bromoethane solution is added, dropwise at a rate sufficient to maintain a gentle reflux. After the addition, stirring is continued for 1 hour. To this solution of ethylmagnesium bromide was slowly added a solution of 4-cyanopyridine (39 g, 0.375 mol) in Et2O (750 ml). The reaction mixture was warmed at reflux for 12 hours, treated with concentrated H2SO4 (125 ml)/H2O (125 ml), and then washed three times with Et2O (250 ml). The aqueous portion was made basic (PH 9) with 15percent NaOH solution and extracted five times with 250 ml portions of Et2O. The combined Et2O extracts were dried (MgSO4), and the solvent was removed under reduced pressure to afford a brown oil (48.4 g, 95percent).Return还原胺化OHO H 2N+HON HA solution of 2-amino-4-ethylphenol (1.00 g. 7.28 mmol), 2-naphthaldehyde (1.13 g, 7.28 mmol), andp-toluenesulfonic acid (0.05 g) in methanol (50 ML) was stirred at room temp for 24 h. To the resultant solution, sodium borohydride (0.82 g, 22 mmol) was added in small portions. After addition was completed, the mixture was stirred at room temperature for 30 min and concentrated under vacuum. The residue was then subjected to column chromatography on silica gel eluted with 10percent ethyl acetate in hexane and followed by recrystallization (aqueous methanol) yielded 450 mg (22percent) of analytically pure product.Return卤化反应O2N O2NBrTo a stirred solution of 8-methyl-1-nitro-naphthalene (10.6g, 56.32 mmol) and iron (III) chloride (0.45 g, 2.77 mmo) in CCl4 (150 ml) heated to 60°C was added dropwise (3.0 ml, 58.23 mmol) of bromine. After one hour, the reaction mixture was poured into saturated NaHCO3 solution, and the layers were separated. The aqueous layer was re-extracted with CH2Cl2. The combined organic layers were dried (MgSO4) and the solvent was removed under reduced pressure. The crude residue was recrystallized from ethanol and the mother liquors were concentrated and then flash chromatographed on silica, eluding hexanes:ethyl acetate (12: 1).ReturnSuzuki couplingBrBOO NH+NH To a mixture of 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-indole (2 g, 8.2 mnmol) and3-bromobenzene (0.87 ml, 8.3 mmol) in THF (28 ml) were added palladium catalyst Pd(PPh3)4 (284 mg, 0.25 mmol) and the freshly prepared sodium hydroxide solution (984 mg in 9 ml of water).The system was degassed and then charged with nitrogen for three times. The mixture was stirred under nitrogen at 70 °Coil bath for 6 hours. The reaction solution was cooled to room temperature, diluted with ethyl acetate and separated from water layer. The ethyl acetate solution was washed by brine, dried over Na2SO4 and concentrated. The residue was purified on a silica gel column eluding with hexanes: EtOAc 9:1 to give 1.38 g (78%yield) of 4-phenyl-1H-indole as a colorless liquid.Return磺化反应NOFFFNOFFFSOClOChlorosulfonic acid (4.66g, 40 mmol) is added dropwise to a cold (0°C) solution of2,3-dihydro-2-trifluoroacetyl-1H-Benz[de]isoquinoline (2.9g, 8 mmol) in chloroform (800 ml). The resulting solution is stirred at 0°C for 30 minutes. The cold bath is then removed and the solution is stirred at room temperature for 1 hour then cautiously poured into ice water. The organic layer is separated, dried over magnesium sulfate and concentrated to afford the title compound. The crude product is purified by column chromatography eluted with 10% acetic ether in petroleum ether (2.36 g, 81% yield).Return酯化反应HOHO O HOO OA mixture of 4-hydroxymethylnaphthoic acid (10 g, 50 mmol), methanol (300 ml), and concentrate H2SO4(2 ml) was refluxed overnight. The insolubles were filtered off and the filtrate was concentrated. The residue was taken up in ethyl acetate and washed with aqueous NaHCO3 (2*), brine, dried over MgSO4, and concentrated to give a yellow oil. Silica gel column chromatography using ethyl acetate/hexane (1/3) gave the desired product as a yellow oil (3.3 g, 35%yield).Return水解反应OO OHOA solution of 1-Methyl-naphthalene-2-carboxylic acid methyl ester (7.20g, 35mmol) and 2N sodium hydroxide (35ml) in tetrahydrofuran (130ml) was stirred under reflux for 18 hours. The mixture was neutralised using 2N hydrochloric acid, and extracted with dichloromethane (3x). The combined organic solutions were dried (MgSO4), and evaporated under reduced pressure. The crude product was purified by column chromatography on silica gelusing an elution gradient of dichloromethane: methanol (100:0 to 97:3) to afford the title compound as a solid (3.11g, 47.8%yield).Return硝化反应NO 2To a cold (0°C) suspension of 1-methylnaphthalene (5 g, 35.2 mmol) in HNO3 was added H2SO4 (5 ml) dropwise. After stirring the reaction for one hour, the solution was diluted with ethyl acetate and washed with water (3*), aqueous saturated NaHCO3 (2*) and brine, dried over MgSO4, and concentrated. The product was purified by silica gel column chromatography using ethyl acetate: hexane (5: 95) and recrystallized from methanol to give yellow needles (0.22g, 33% yield).Returnn-BuLiEtOCF 3O CF 3O NCTo a dry three-necked round-bottomed flask with an addition funnel and at -78°C under inert atmosphere was charged with anhydrous THF (500 ml). A solution of n-butyllithium (2.5 M in hexane, 88ml, 220 mmol) was added dropwise followed by addition of a solution of acetonitrile (10.43 ml, 200 mmol) in anhydrous THF (100 ml). The internal temperature was maintained below -70°C during the entire addition process. After 2 hr at -78°C a solution of Trifluoro-acetic acid ethyl ester (14.2 g, 100 mmol) in anhydrous THF (30 ml) was added dropwise and the mixture was stirred for 1.5 hr. To the mixture was added acetic anhydride to quench the reaction. The reaction mixture was allowed to warm up to rt. A precipitate was filtered and the filtrate was concentrated to give a brown oil, which was used in the next step without purification.ReturnLiAlH4还原HOHO O OHOHOA solution of 2,3-naphthalenedicarboxylic acid (4.6 g, 0.023 mole) in dry THF (135 ml, warmed to 50° to maintain solution) is added dropwise over 15 minutes to a 1.15 M lithium aluminum hydride solution in THF (45 ml, 0.052 mole). The solution is stirred 3 hours after which TLC indicated consumption of diacid and formation of a new major product. The reaction is quenched carefully with THF-water, then 2N hydrochloric acid (40 ml) is added, and the resulting mixture is extracted 3 times with ether. The combined ether extracts are washed with water (2 times), with saturated sodium bicarbonate solution (1 time), with water, and are dried (sodium sulfate), filtered, and concentrated to give a tan solid (3.67 g). The solid is recrystallized from ethyl acetate giving the title compound (2.91 g, 67.3%yield) as a light tan crystalline material.ReturnPOCl3的杂环氯代NN HOOHN NClClTo a suspension of 2,4-dihydroxy-5,6-dimethylpyrimidine (6.2 g, 0.044 mol) in POCl3 (25 ml) was slowly added N,N-dimethylaniline (6.18 ml, 0.049 mol). The mixture was then refluxed at 125 °C for 3 hours. After this time, the starting material completely dissolved indicating that the reaction was completed.The reaction mixture was cooled and then poured slowly onto ice to quench the POCl3(caution[exothermic]). A precipitate formed, which was filtered and washed with ice-cold water. The precipitate was dried under high vacuum overnight to yield 2,4-dichloro-5,6-dimethyl-pyrimidine (7.2 g, 0.041 mol, 92%yield) as a yellow solid.ReturnNaHHSH 2N Cl +SNH 2Sodium hydride (50% in mineral oil, 5.5 g, 0.11 mol) was added portionwise at 0 °C under a nitrogen atmosphere to a solution of 2-aminobenzenethiol (12 ml, 0.1 mol) in DMF (120 ml). After 0.5 h, benzyl chloride (11.5 ml, 0.1 mol) in DMF (80 ml) was added in 0.5 h. The solution was stirred for 3 h while the temperature was allowed to rise to rt, then it was poured into ice/water (1000 g). The precipitate was filtered, dissolved in ethyl acetate and washed with brine. The organic layer was dried over Na2SO4 and evaporated. The solid obtained was ground in pentane (19.3 g, 90% yield).ReturnNBSNN FCl ClNBSN N FCl ClBrA mixture of 2,4-Dichloro-6-ethyl-5-fluoro-pyrimidine (27.46 g ， 0.14mol), AIBN (1.32 g) and n-bromosuccinimide (27.02 g ， 0.152mol) in CH2Cl2 (170 ml) was refluxed under a nitrogen atmosphere for 36 h. Then washed by water, the aqueous was extracted by CH2Cl2. The combined organic layer was washed by saturated Na2S2O3 and brine, dried over Na2SO4, and evaporated to give a white solid which was purified by column chromatography eluted with 50% acetic ether in petroleum ether (34 g, 88.6% yield).Return氢化反应O ONH OONH2Cl ClA mixture of ethyl 3-(N-benzylamino)-3-methylbutyrate hydrochloride (25g, 0.1 mol) and 10percent Pd-C (2g) in 250 ml of dried alcohol was hydrogenated under 55 psi H2 for four days. The reaction medium was then filtered and evaporated under reduced pressure to provide an amber oil which gradually crystallized upon standing (18 g, 100% yield).Returnm-CPBAS NH2SNH2OA solution of 85% m-chloroperoxybenzoic acid (19 g, 94 mmol) in CH2Cl2 (350 ml)was added at –5 –0 °C to a solution of 2-Benzylsulfanyl-phenylamine (19 g, 88 mmol) in CH2Cl2 (400 ml). The mixture was allowed to warm to rt in 3 h, then it was washed with a 5% Na2S2O3 solution, 10% NaHCO3 solution and brine. The organic layer was dried over Na2SO4, and evaporated. The solid was ground in pentane (19 g, 95% yield).ReturnEDCNH2OHNOO+HOHOHNOOTo a 0°C mixture of Boc-L-tyrosine (2.04 g, 7.26 mmol) and amylamine (0.63 gl, 7.26 mmol) in methylene chloride (30 ml) is added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) (1.53 g, 9.9 mmol). Thewhite mixture is stirred at 0°C for 5 min and at room temp for 23 hrs. The resulting solution is diluted with methylene chloride (30 ml) and washed successively with 0.5 M HCl (40 ml), water (20 ml) and sat aq sodium bicarbonate (25 ml). The organic phase is dried over magnesium sulfate and concentrated to a foam (1.84 g, 72.4%yield), sufficiently pure to carry into the next step. An analytical sample is obtained by HPLC.Return三光气成脲NH 2ONO 2Si O Cl Cl ClO O Cl Cl ClO 2NHN H NO OHOHNO 2+To a solution of 2-(tert-butyldimethylsilyloxy)-4-nitroaniline (200 mg, 0.75 mmol) in toluene (10 ml) triethylamine (0.13 ml, 1.64 mmol) and triphosgene (88.4 mg, 0.3 mmol) were added. The reaction mixture was stirred at 70 °C for 2 hours, then cooled to room temperature. Then more 2-(tert-butyldimethylsilyloxy)-4-nitroaniline (200 mg, 0.75 mmol) was added. The resulting mixture was allowed to stir at 70 °C for 48 hours then cooled to room temperature. The reaction mixture was partitioned between water and ethyl acetate. The combined organic phase was washed with brine, dried over MgSO4 and filtered. Removal of solvent at reduced pressure and chromatography of the resulting oil on silica gel (hexane: ethyl acetate, 10:1) gave 1,3-Bis-(2-hydroxy-4-nitro-phenyl)-urea (130 mg, 31%yield).Return芳卤用n-BuLi处理后与Weinreb酰胺成酮N FFFFNOO+FFFO NFTo a solution of diisopropylamine (17.69 ml, 0.135 mole) in THF (200 ml) at –78°C under argon was added n-butyllithium (54.0 ml, 2.5M in hexane, 0.135 mole), followed after 5 min by dropwise a solution of 2-fluoro-4-methylpyridine (10 g, 0.090 mole) in THF (20 ml). After stirring for 15 min at –78°C, a solution of N-methoxy-N-methyl-3-trifluoromethylbenzamide (23.08 g, 0.099 mole) in THF (10 ml) was added dropwise. After stirring for more 5 min, the reaction was allowed to warm to 0°C and quenched by pouring into water (400 ml) and ethyl acetate (400 ml). The layers were separated, and the aqueous layer washed with ethyl acetate (200 ml). The ethyl acetate extracts were combined, dried over anhydrous sodium sulfate, filtered, and concentrated to an oil which was chromatographed on silica gel with 20percent ethyl acetate in hexane to give 21.6 g of 2-(2-Fluoro-pyridin-4-yl)-1-(3-trifluoromethyl-phenyl)-ethanone (84.8%yield).Return。
药明康德--钯催化的插羰反应-060410
经典化学合成反应标准操作钯催化的插羰反应编者：钱占山药明康德新药开发有限公司化学合成部Contents1．前言...........................................................................2-3 2．插羰反应制备羧酸及其衍生物.......................................4-15 3．插羰反应制备羧酸实验操作..........................................15-16 4．插羰反应制备羧酸酯实验操作....................................16-19 5．插羰反应制备酰胺实验操作.......................................19-20 6．插羰反应制备醛 (20)7．插羰反应制备醛实验操作………………………………………21-22 8．插羰反应制备酮………………………………………22-30 9．插羰反应制备酮实验操作………………………………………30-311. 前言在有机合成中，钯催化的反应是一类特别有用的反应，它提供了一种形成碳-碳键的独特的方法。
这类反应的优点：1、不需要加入其他氧化剂催化；2、只需催化量的钯催化剂。
钯催化的插羰反应是这类反应中应用最为广泛的反应之一，在这里我们将重点介绍它。
众所周知，在格氏反应中单质镁金属与带有sp3杂化碳原子的有机卤化物（烷基卤化物）反应要比带有sp2杂化碳原子的有机卤化物（芳基和烯基卤化物）反应更容易。
而与此相反，钯的络合物与含有sp2杂化碳原子的有机卤化物反应更容易。
换句话说，烯基和芳基卤化物非常容易与Pd(0)发生氧化加成反应，从而生成含有钯-碳б-键的络合物中间体1；然后，不饱和化合物（例如：烯烃、共轭二烯、炔烃和一氧化碳等）插入到钯-碳键之间；最后，经过还原消去或者β-氢消去反应生成相应的目标化合物。
Mitsunobu-反应
Mitsunobu-反应经典化学合成反应标准操作Mitsunobu 反应编者：谢军药明康德新药开发有限公司化学合成部目录1．前言 (2)2．醇的翻转 (3)2.1 Mitsunobu 法醇的构型翻转合成方法示例 (7)3．Mitsunobu 醚化反应 (8)3.1 Mitsunobu 法醚的合成方法示例 (9)4．Mitsunobu 氨基取代反应 (10)4.1 Mitsunobu 法利用苯磺酰胺合成胺方法示例 (13)4.2 Mitsunobu 法利用DPPA合成伯胺方法示例 (13)4.3 Mitsunobu 法分子内关环合成相应的环状胺方法示例 (14)4.4 Mitsunobu 法合成丙二烯方法示例 (14)5．Mitsunobu 硫代反应 (16)5.1 Mitsunobu 法合成硫醚方法示例 (16)6．Mitsunobu 卤代反应 (18)6.1 Mitsunobu 法合成卤代物方法示例 (18)7．其他手性翻转试剂 (20)1. 前言1967年，Oyo Mitsunobu 报导了在三苯膦（PPh3）和偶氮二甲酸二乙酯（DEAD）作用下酸和醇缩合成酯的新方法1。
当底物为仲醇的时候，与羟基相连的碳原子的构型会发生翻转。
经过多年的研究和发展，形成了一大类合成方法，我们称之为Mitsunobu 反应。
这类反应被广泛应用在有机合成，特别是天然产物的合成中2。
2．醇的翻转在Mitsunobu 反应中，DEAD 和三苯膦首先生成一个活性的甜菜碱式中间体（betaine intermediate ），这个活性中间体夺取作为亲核试剂的酸的质子并同时活化醇，随后经过S N 2取代，得到手性翻转的酯；将得到的酯水解，其净结果是醇的构型翻转。
R O R OH Ar O23反应在很温和的条件下进行，通常反应温度是在0o C 到室温，大部分基团都不会影响反应。
但亲核试剂质子的pKa 值必须小于甜菜碱式中间体（betaine intermediate ）的pKa 值（～13），否则亲核试剂的质子不能被中间体（betaine intermediate ）夺取，反应不能进行。
Mitsunobu 反应
实用标准文案经典化学合成反应标准操作Mitsunobu 反应编者：谢军药明康德新药开发有限公司化学合成部目录1．前言 (2)2．醇的翻转 (3)2.1 Mitsunobu 法醇的构型翻转合成方法示例 (7)3．Mitsunobu 醚化反应 (8)3.1 Mitsunobu 法醚的合成方法示例 (9)4．Mitsunobu 氨基取代反应……………………………………………104.1 Mitsunobu 法利用苯磺酰胺合成胺方法示例…………………………………134.2 Mitsunobu 法利用DPPA合成伯胺方法示例……………………………………134.3 Mitsunobu 法分子内关环合成相应的环状胺方法示例…………………………144.4 Mitsunobu 法合成丙二烯方法示例………………………………………………145．Mitsunobu 硫代反应…………………………………………………1 65.1 Mitsunobu 法合成硫醚方法示例 (16)6．Mitsunobu 卤代反应…………………………………………………186.1 Mitsunobu 法合成卤代物方法示例 (18)7．其他手性翻转试剂 (20)1. 前言1967年，Oyo Mitsunobu 报导了在三苯膦（PPh3）和偶氮二甲酸二乙酯（DEAD）作用下酸和醇缩合成酯的新方法1。
当底物为仲醇的时候，与羟基相连的碳原子的构型会发生翻转。
经过多年的研究和发展，形成了一大类合成方法，我们称之为Mitsunobu 反应。
这类反应被广泛应用在有机合成，特别是天然产物的合成中2。
2．醇的翻转在Mitsunobu 反应中，DEAD 和三苯膦首先生成一个活性的甜菜碱式中间体（betaine intermediate ），这个活性中间体夺取作为亲核试剂的酸的质子并同时活化醇，随后经过S N 2取代，得到手性翻转的酯；将得到的酯水解，其净结果是醇的构型翻转。
磺酰氯合成法
经典化学合成反应标准操作磺酰氯合成法编者：张国柱药明康德新药开发有限公司化学合成部目录1. 前言 (2)2. 芳香磺酰氯的制备 (2)2. 1直接氯磺化法制备芳香磺酰氯 (2)2. 2芳香磺酸或盐氯化制备芳香磺酰氯 (3)2. 3芳香硫醇及相关衍生物氯代、氧化合成芳香磺酰氯 (8)2. 4. 芳香硫醇的制备 (11)2. 5 Sandermeyer 反应由芳胺合成芳香磺酰氯 (13)3. 脂肪磺酰氯的制备3. 1 烷基硫醇的合成及通过烷基硫醇合成脂肪磺酰氯 (14)3. 2 通过烷基硫脲合成脂肪磺酰氯 (16)3. 3 通过烷基异硫氰酸酯合成芳香磺酰氯 (17)3. 4 通过羧酸硫醇酯合成芳香磺酰氯 (17)3. 5 脂肪磺酰氯合成反应示例 (18)参考文献： (20)1. 前言磺酰氯是有机化学中非常重要的一类化合物，它们可以作为重要的中间体进行修饰。
比如，同胺类化合物作用生成的磺胺类药物是优良的化学治疗剂，开始应用于20世纪30年代。
它们能抑制多种细菌，如链球菌、葡萄球菌、肺炎球菌、脑膜炎球菌、痢疾杆菌等的生长和繁殖，因此常用以治疗由上述细菌所引起的疾病。
高碳烷基磺酸钠类化合物则是优良的合成洗涤剂。
磺酰氯主要分为脂肪族磺酰氯和芳香族磺酰氯。
芳香磺酰氯的来源有以下几类：1）由硫酚，各种硫醚在酸性溶剂中导入氯气制得；2)芳香磺酸类化合物在氯化试剂作用下形成；3）磺化反应。
脂肪族磺酰氯的来源主要是硫醇或相关衍生物氯代或氧化。
因此，作为磺酰氯的重要前体，磺酸和硫醇类化合物的引入，也是合成磺酰氯基团的重要手段。
2. 芳香磺酰氯的制备芳香磺酰氯的制备一般分为以下几种方法，直接用氯磺化法制备芳香磺酰氯。
芳香磺酸或盐经氯化制备芳香磺酰氯。
芳香硫醇及相关衍生物氯化，氧化合成芳香磺酰氯。
Sandermeyer反应由芳胺合成芳香磺酰氯。
2. 1直接氯磺化法制备芳香磺酰氯氯磺酸是一类比较常用的直接氯磺化试剂，氯磺酸的活性比浓硫酸大，反应温度较低，同时可以直接得磺酰氯。
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Mitsunobu 氨基取代反应
磺酰肼与α--羟基取代炔经过Mitsunobu氨基取代反应，生 成的产物不稳定，马上分解为丙二烯化合物，这是一个制 备丙二烯化合物的比较便捷的方法
13
Mitsunobu 硫代反应
R'COOH
O
R OH DEAD, PPh3 R O R'
Mitsunobu
K2CO3 MeOH
R OH
R'COOH: AcOH, O2N
COOH
4
Mitsunobu应用, 手性醇的翻转
最早将Mitsunobu 手性翻转用于天然产物的合成，只需一步就 将5α-choletan-3β-ol 转变为5α-choletan-3α-ol
这类偶联反应有一些突出的优点：1.反应对水不敏感；2. 可允许多种活性官能团存在；3.可以进行通常的区域和立 体选择性的反应，尤其是，这类反应的无机副产物是无毒 的并且易于除去，这就使得其不仅适用于实验室而且可以 用于工业化生产。 其缺点是氯代物（特别是空间位阻大的氯代物）及一些杂 环硼酸反应难以进行。 目前，Suzuki 偶联反应的研究主要在以下几个方向：1. 合成并筛选能够在温和的条件下高效催化卤代芳烃（特别 是氯代芳烃）的配体；2. 多相催化体系的Suzuki偶联反应 研究；3. 应用于Suzuki 偶联反应的新合成方法研究。
5
Mitsunobu醇的翻转---应用
p-硝基苯甲酸（PNBA）作为亲核试剂对立体位阻较大的醇 的翻转更有效
6
Mitsunobu 分子内环化
分子内的Mitsunobu反应为内酯的合成提供一个有效的方法
7
Mitsunobu 醚化反应
Mitsunobu 反应中，羟基可以作为亲核试剂参与SN2取代，结果 是生成醚。通常只限于酚羟基和pKa<13的羟基，否则反应不能进 行 。但如果亲电试剂的羟基活性足够高，或反应生成稳定的环状 产物，对于较低活性的羟基，Mitsunobu 醚化反应也能进行
8
Mitsunobu 醚化反应
MeOOC
OH +
Cl
AcHN
OH DEAD, Poly-PPh3
AcHN
Cl
O
COOMe
9
Mitsunobu 氨基取代反应
一些适合于Mitsunobu反应的胺衍生物：
O
O
NH
G
NH
O
O
OO
R
R
ONO
H
Boc Boc N H
Boc Cbz N H
G
N
H N
N
N
G
O
R
2
第一部分： Suzuki 反应
3
1. 前 言
1.1 Suzuki反应的通式
在钯催化下，有机硼化合物与有机卤素化合物进行的 偶联反应，称之为Suzuki偶联反应，或Suzuki-Miyaura 偶联反应。
R1 BY2 +
R2 X
[Pd] base
R1 R2
BY2 = B(OR)2, 9-BBN, B(CHCH3CH(CH3)2) X = I, Br, Cl, OSO2(CnF2n+1), n = 0,1,4
R
N
ON H
O
OO
R
S
ONR
H
Boc Ts N H
Boc Ns N H
OR N
R NR H
O O
R NR H
H N Ns: Ns R
SO2Cl NO2
O2N
SO2Cl NO2
SO2Cl NO2
H NN
N RN
HN3
DPPA
TfNHR
TsNH2Ar 10
Mitsunobu 氨基取代反应
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Mitsunobu 氨基取代反应
2
Mitsunobu反应原理简介
DEAD 和三苯膦首先生成一个活性的甜菜碱式（betaine）中间体 活性中间体夺取作为亲核试剂的酸的质子并同时活化醇 亲核试剂质子的pKa值必须小于甜菜碱式中间体的pKa 值（～
13），否则亲核试剂的质子不能被该中间体夺取，反应不能进行3.
Mitsunobu应用, 手性醇的翻转
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Mitsunobu 卤代反应
在Mitsunobu 反应中，用卤原子取代羟基生成卤代物也有 报导，但其应用还不多见
脯胺酸衍生物在经过Mitsunobu 得到手性翻转的碘代产物
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碳亲核试剂的Mitsunobu反应
COOEt HO
Ar
COOEt
DEAD, PPh3
Ar COOEt
COOEt
R
COOCH2CF3
经典化学合成反应讲座(三)
Mitsunobu Reaction
化学合成部执行主任:马汝建
药明康德新药开发有限公司
药明康德版权所有
1
目录
1. 简介 2. Mitsunobu 法醇的翻转 3. Mitsunobu 法醚化反应 4. Mitsunobu 氨基取代反应 5. Mitsunobu 硫代反应 6. Mitsunobu 卤代反应 7. 碳亲核试剂的Mitsunobu反应
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1. 前 言
1.2 Suzuki反应的机理
Suzuki 偶联反应的催化循环 过程通常认为先是Pd(0)与卤代 芳烃发生氧化-加成反应生成 Pd(II) 的络合物，然后与活化 的硼酸发生金属转移反应生成 Pd(II)的络合物，最后进行还 原-消除而生成产物和Pd(0)。
5
1. 前 言
1.3 Suzuki反应的特点及研究方向
R1 = aryl, alkenyl, alkyl R2 = aryl, alkenyl, alkynyl, benzyl, allyl, alkyl
[Pd] = Pd(PPh3)4, Pd(dppf)Cl2
base = Na2CO3, NaOCH2CH3, TIOH, N(CH2CH3)3, K3PO4
在有其他选择如烷基化的时候，尽量不用Mitsunobu反 应。
17
经典有机合成反应讲座(五)
Pd催化的偶联反应
化学合成部执行主任:马汝建
药明康德新药开发有限公司
药明康德版权所有
1
内容简介
Pd 催化的偶联反应有较多类型，目前用途最广泛 的主要有以下三类:
1. Suzuki 反应 2. Heck 反应 3. Sonogashira 反应
COOCH2CF3
HO R'
R'
R
COOCH2CF3
DEAD, PPh3
COOCH2CF3
NO2
HO R' R
NO2
R
CN
CN
DEAD, PPh3
R'
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小结
一般手性醇翻转成其他氧，氮，硫衍生物时需要用 Mitsunobu反应
反应产物极性与副产物相差较大，效果较好。内部期刊 上有一篇怎样除去副产物的文摘。