Cyclopropanones from the oxidation of hindered [4]- and [5]-cumulenes with epoxidation reagents
作者:Jack K. Crandall、David M. Coppert、Thomas Schuster、Feng Lin
DOI:10.1021/ja00041a014
日期:1992.7
The oxidation of tert-butyl-substituted [5]-cumulene 4 with epoxidizing agents was shown to give sequentially formed conjugated cyclopropanones 15 and 11. The more stable cyclopropanone 11 was isolated and shown to add carboxylic acids to give allenyl ketones of type 5 and to thermally and photochemically lose carbon monoxide to give the [4]-cumulene 6. The oxidation of 4 with peracids leads directly