通过手性腈的无氰化物合成和醛肟脱水酶催化的坎普消除反应的结合,我们在此报道醛肟脱水酶在5-sub-4,5-二氢异恶唑的不对称开环中合成手性β的新应用-羟基腈,具有广泛的底物范围,出色的对映选择性(高达99%ee)和良好的周转率(高达11 s -1)。简单分离并用碱性试剂处理后,剩余的手性5-sub-4,5-二氢异恶唑可轻松转化为它们相应的β-羟基腈。使用定点诱变,证实了含亚铁血红素的活性位点,并提出了两种可能的去质子化途径。据我们所知,这是第一个用于从一个简单的烯烃一步一步构建手性羟基和腈基的酶促反应,这为合成β-羟基互补对映异构体提供了一种新颖而有用的策略腈。
An aldol-type reaction of organonitriles with aldehydes was catalyzed by a RhI(OR) species underambientconditions, and the reaction displayed a broad substrate scope with respect to both organonitrile and aldehyde components.
A Robust Nickel Catalyst for Cyanomethylation of Aldehydes: Activation of Acetonitrile under Base-Free Conditions
作者:Sumit Chakraborty、Yogi J. Patel、Jeanette A. Krause、Hairong Guan
DOI:10.1002/anie.201302613
日期:2013.7.15
room temperature coupling of aldehydes with acetonitrile under base‐free conditions. The catalytic system is long‐lived and remarkably efficient with high turnover numbers (TONs) and turnover frequencies (TOFs) achieved. The mild reaction conditions allow a wide variety of aldehydes, including base‐sensitive ones, to catalytically react with acetonitrile.
Efficient nickel catalyst for coupling of acetonitrile with aldehydes
作者:Lei Fan、Oleg. V. Ozerov
DOI:10.1039/b505778g
日期:——
A Ni complex of a diarylamido-based PNP ligand is an efficient and robust catalyst for coupling of acetonitrile with aldehydes.
二芳基酰胺基 PNP 配体的镍络合物是乙腈与醛偶联的高效、稳健催化剂。
Stereospecific Oxycyanation of Alkenes with Sulfonyl Cyanide
作者:Kensuke Kiyokawa、Miu Ishizuka、Satoshi Minakata
DOI:10.1002/anie.202218743
日期:2023.3.13
Intermolecular oxycyanation of alkenes using p-toluenesulfonyl cyanide (TsCN) in the presence of tris(pentafluorophenyl)borane (B(C6F5)3) as a catalyst was shown to be feasible. The developed method offers a simple, scalable, and straightforward approach to access synthetically useful β-hydroxy nitrile derivatives.
在三(五氟苯基)硼烷(B(C 6 F 5)3 )作为催化剂存在下,使用对甲苯磺酰氰(TsCN)进行烯烃的分子间氧氰化被证明是可行的。开发的方法提供了一种简单、可扩展且直接的方法来获取合成有用的β-羟基腈衍生物。
BROCARD, JACQUES;PELINSKI, LYDIE;LEBIBI, JACQUES;MAHMOUDI, MADANI;MACIEJE+, TETRAHEDRON, 45,(1989) N, C. 709-720