Search for dioxocarbenes in photochemical reactions of 5-diazo-4,6-dioxo-1,3-dioxanes, associated diazirines, and S-ylides
作者:V.V. Shevchenko、N.N. Khimich、M.S. Platz、V.A. Nikolaev
DOI:10.1016/j.tetlet.2004.11.102
日期:2005.1
On direct photolysis of 2,2-dialkyl-5-diazo-4,6-dioxo-1,3-dioxanes in the presence of pyridine, methanol or dimethyl sulfide as carbene traps, the yield of ‘carbene’ products does not exceed 27–28%. At the same time photochemical transformations of the related 3,3-diacyldiazirines and dioxosulfonium ylides of this series, evidently, occur without generation of carbene intermediates.
在存在吡啶,甲醇或二甲基硫醚作为卡宾捕集剂的情况下,对2,2-二烷基-5-重氮-4,6-二氧代-1,3-二恶烷进行直接光解时,“卡宾”产物的收率不超过27 –28%。同时,与此相关的3,3-二酰基二叠氮基和该系列二氧代ulf鎓的光化学转化显然发生了,而没有产生卡宾中间体。