nucleophilic addition involves removal of the cyano group linked to active methylene by the action of KF, and direct addition to enones. The reaction's capability for nucleophilic attack is F− > CN− in DMF. The use of low-toxicity reagents hints that the reaction is more environmentally friendly than traditional approaches.
多米诺亲核加成反应用于四组分Al 2 O 3催化的多取代β-氰基丙烷-1-酮的环保合成。多米诺亲核加成反应包括通过KF的作用除去与活性亚甲基连接的氰基,然后直接加成烯酮。该反应的亲核攻击能力是F - > CN -在DMF。使用低毒性试剂提示该反应比传统方法对环境更友好。
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.
Cyanation of α,β-unsaturated enones by malononitrile in open air under metal-catalyst-free conditions
作者:Shaoxia Lin、Ying Wei、Fushun Liang
DOI:10.1039/c2cc35528k
日期:——
Cyanation of α,β-unsaturated enones by employing malononitrile as the organic cyanation source has been disclosed, which proceeds efficiently at room temperature in open air under metal-catalyst-free conditions.
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。