Reactions of Monoaryl-Substituted Methylenecyclobutanes and Methylenecyclopropanes with 1-Hydroxybenzotriazole (HOBt), 1-Hydroxy-7-azabenzotriazole (HOAt), and 1-Hydroxysuccinimide (HOSu)
作者:Min Jiang、Min Shi
DOI:10.1021/jo9000299
日期:2009.3.20
Monoaryl-substituted methylenecyclobutanes (MCBs) and methylenecyclopropanes (MCPs) react with 1-hydroxybenzotriazole (HOBt), 1-hydroxy-7-azabenzotriazole (HOAt), and 1-hydroxysuccinimide (HOSu) smoothly to produce the corresponding cyclobutylmethanone and cyclopropylmethanone derivatives 2, 4, and 5 via a cascade epoxidation and nucleophilic addition process or the corresponding epoxides 6 in moderate
The reaction of mono-aryl substituted methylenecyclobutanes with diphenyl diselenide in the presence of iodosobenzene diacetate and H2O
作者:Min Jiang、Min Shi
DOI:10.1016/j.tet.2008.11.052
日期:2009.1
The mono-aryl substituted methylenecyclobutanes undergo an interesting reaction with diphenyl diselenide in the presence of iodosobenzenediacetate and H2O at 40 °C in 1,2-dichloroethane to give the corresponding aryl-(1-phenylselanylcyclobutyl)methanones in moderate to good yields within 30 h. A plausible reaction mechanism has been discussed on the basis of the control and 18O-labeling experiments