Dochnahl, Maximilian; Fu, Gregory C., Angewandte Chemie - International Edition, 2009, vol. 48, p. 2391 - 2393
作者:Dochnahl, Maximilian、Fu, Gregory C.
DOI:——
日期:——
Enantioselective formal [2+2] cycloaddition of ketenes with nitroso compounds catalyzed by N-heterocyclic carbenes
作者:Tong Wang、Xue-Liang Huang、Song Ye
DOI:10.1039/c0ob00249f
日期:——
Chiral N-heterocycliccarbenes were found to be efficient catalysts for the formal [2+2] cycloaddition reaction of alkyl(aryl)ketenes and nitroso compounds to give the corresponding 1,2-oxazetidin-3-ones in moderate to good yields with high enantioselectivities. Reductive ring-opening of the oxazetidinones give the corresponding α-hydroxy acid derivatives in good yields.