N-heterocyclic carbenes mediated cyano-phosphorylation of ketones
作者:Lin He、Jing Zhang、Ye-Cheng Fan、Guang-Fen Du、Jie Zhang、Bin Dai
DOI:10.1016/j.tetlet.2013.08.073
日期:2013.10
Cyanation-O-protection reaction of ketones with different cyanide sources catalyzed by N-heterocyclic carbenes is reported. Under the catalysis of 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene, various ketones coupled with diethyl cyanophosphonate to produce cyanohydrin-O-phosphates with a quaternary carbon center in moderate to excellent yield. Furthermore, the reaction can be scaled-up easily and high yield maintained. (C) 2013 Elsevier Ltd. All rights reserved.
A convenient and improved preparation of Cyano phosphates
作者:Irene Micó、Carmen Nájera
DOI:10.1016/s0040-4020(01)85749-5
日期:1993.1
Cyano phosphates derived from aldehydes or ketones are prepared in good yields using lithium cyanide in DMF and diethyl chlorophosphate as phosphorylating agent.
HARUSAWA, SHINYA;YONEDA, RYUJI;KURIHARA, TAKUSHI;HAMADA, YASUMASA;SHIOIRI+, CHEM. AND PHARM. BULL., 1983, 31, N 8, 2932-2935
A method is described for synthesizing succinonitrile derivatives bearing alkyl or aryl substituents from cyanohydrin derivatives using low-valent titanium. The active species in this reaction is proposed to be a resonance hybrid of the TiIV nitrile enolate and TiIII alkyl radical.
描述了一种使用低价钛由氰醇衍生物合成带有烷基或芳基取代基的琥珀腈衍生物的方法。该反应中的活性物质被认为是 Ti IV腈烯醇化物和 Ti III烷基自由基的共振杂化物。