Conjugate Hydrocyanation of Chalcone Derivatives Using Ethyl Cyanoacetate as an Organic Cyanide Source
作者:Zheng Li、Junjun Yin
DOI:10.1002/cjoc.201600860
日期:2017.7
The conjugate hydrocyanation of chalcone derivatives using ethyl cyanoacetate as an organic cyanide source at room temperature under open air and transition metal‐free conditions was described. The protocol has advantages of using relatively cheap, less toxic, stable and easy‐to‐handle cyanating reagent, high yield, and mild reaction condition.
Cyano-borrowing reaction: nickel-catalyzed direct conversion of cyanohydrins and aldehydes/ketones to β-cyano ketone
作者:Zhao-Feng Li、Qian Li、Li-Qing Ren、Qing-Hua Li、Yun-Gui Peng、Tang-Lin Liu
DOI:10.1039/c9sc00640k
日期:——
nickel-catalyzed, high atom- and step-economical reaction of cyanohydrins with aldehydes or ketones via an unprecedented “cyano-borrowing reaction” has been developed. Cleavage of the C–CN bond of cyanohydrins followed by aldol condensation and conjugate addition of cyanide to α,β-unsaturated ketones proceeded to deliver a range of racemic β-cyano ketones with good to high yields. The practical procedure
Conjugate Hydrocyanation of Aromatic Enones Using Potassium Hexacyanoferrate(II) as an Eco-Friendly Cyanide Source
作者:Zheng Li、Chenhui Liu、Yupeng Zhang、Rongzhi Li、Ben Ma、Jingya Yang
DOI:10.1055/s-0032-1317179
日期:——
A selective conjugate hydrocyanation of aromatic enones by a one-pot, two-step procedure usingpotassiumhexacyanoferrate(II) as an original eco-friendlycyanidesource, potassium hydroxide as a base, and benzoyl chloride as a promoter was described. This protocol has the advantages of a nontoxic cyanidesource, high yield, and simple workup procedure.
描述了使用六氰基高铁酸钾 (II) 作为原始环保氰化物源、氢氧化钾作为碱和苯甲酰氯作为促进剂,通过一锅两步法选择性共轭氢氰化芳族烯酮。该协议具有无毒氰化物源、高产率和简单后处理程序的优点。
One-Pot Synthesis of Polynuclear Indole Derivatives by Friedel–Crafts Alkylation of γ-Hydroxybutyrolactams
作者:Vladimir T. Abaev、Nicolai A. Aksenov、Dmitrii A. Aksenov、Elena V. Aleksandrova、Alesia S. Akulova、Igor A. Kurenkov、Alexander V. Leontiev、Alexander V. Aksenov
DOI:10.3390/molecules28073162
日期:——
The Friedel–Crafts reaction of novel 3,5-diarylsubstituted 5-hydroxy-1,5-dihydro-2H-pyrrol-2-ones was used for low cost, one-pot preparation of polycyclic indolederivatives structurally similar to Ergot alkaloids.
Scalable Electrocatalytic Intermolecular Acylcyanation and Aminocyanation of Alkenes
作者:Xianqiang Kong、Xiaohui Chen、Yiyi Chen、Zhong-Yan Cao
DOI:10.1021/acs.joc.1c03134
日期:2022.6.3
Electrocatalytic three-component acylcyanation and aminocyanation of simple alkenes have been developed. The protocol features high functional group tolerance and can easily be scaled up. The key to success is to use an electrophilic cyanation source, enabling a broadened use of alkenes to aliphatic ones for acylcyanation.