作者:Jeffrey T. DePinto、Wendy A. deProphetis、Jessica L. Menke、Robert J. McMahon
DOI:10.1021/ja066300j
日期:2007.2.1
that would be characteristic of an acetylenic carbene. Chemical trapping with O2, however, affords products that are familiar as carbene trapping products: carbonyl oxide 10, ketone 11, and dioxirane 12. Irradiation (lambda>261 nm) of triplet 1,3-diphenylpropynylidene (3) results in cyclization to singlet diphenylcyclopropenylidene (6), a process that is photochemically reversible at lambda=232 nm. Diphenyl-1