N-heterocyclic carbenes mediated cyano-phosphorylation of ketones
摘要:
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