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
Epoxidation of 3,6-di-tert-butyl-2,2,7,7-tetramethyl-3,4,5-octatriene. Isolation of a stable methylenecyclopropanone
作者:Jack K. Crandall、Gabriel E. Salazar、Richard J. Watkins
DOI:10.1021/ja00248a033
日期:1987.7
Obtention de di-t-butyl di-t-butylmethylene cyclopropanone, -oxiranne et -oxetannone-3, de di-t-butyl-2,2 di-t-butylvinylidene-3 oxiranne et d'ester d'hydroxy-4 tetra-t-butyl-1,1,4,4 butyne-2yle de l'acide metachlorobenzoique
得二叔丁基二叔丁基亚甲基环丙酮,-oxiranne et -oxetannone-3,de di-t-butyl-2,2 di-t-butylvinylidene-3 oxiranne et d'ester d'hydroxy-4 tetra -t-丁基-1,1,4,4 丁炔-2yle de l'acide metachlorobenzoique
A novel formation of 1,2,3-butatriene episulfides by thionation of methylenecyclopropanones
作者:Wataru Ando、Hiroshi Hayakawa、Norihiro Tokitoh
DOI:10.1016/s0040-4039(00)95426-1
日期:1987.1
Stericallyhindered methylenecyclopropanones were thionated with phosphorus pentasulfide in pyridine to afford novel 1,2,3-butatriene episulfides and thiiranoradialene derivative via methylenecyclopropanethione intermediate.