Triphenylbismuthonio-4,4-dimethyl-2,6-dioxocyclohexane-1-ide and Triphenylbismuthonio-4,4-dimethyl-2,6-dioxo-3,5-dioxan-1-ide. Preparation and Properties of the Stable Bismuthonium Ylides
作者:Hitomi Suzuki、Toshihiro Murafuji、Takuji Ogawa
DOI:10.1246/cl.1988.847
日期:1988.5.5
The title two bismuthonium ylides were obtained in pure form and their reactions with some electrophiles were studied. In contrast with stable ylides of arsenic and antimony, these bismuthonium ylides readily react with aldehydes and isothiocyanates but they are inert towards ketones.
Reaction of Stabilized Bismuthonium Ylides with Aldehydes. A Novel Reaction Mode of the Heaviest Group V Element Ylide
作者:Takuji Ogawa、Toshihiro Murafuji、Hitomi Suzuki
DOI:10.1246/cl.1988.849
日期:1988.5.5
Stabilized bismuthonium ylides, triphenylbismuthonio-4,4-dimethyl-2,6-dioxocyclohexane-1-ide and triphenylbismuthonio-4,4-dimethyl-2,6-dioxo-3,5-dioxan-1-ide, react with aldehydes to afford three types of products; tetraacylcyclopropanes, dihydrofurans, and α,β-unsaturated carbonyl compounds, the relative importance of these depending greatly on the ylides, aldehydes, and reaction conditions employed.
Transylidation of Some Stabilized Bismuthonium Ylides
作者:Hitomi Suzuki、Toshihiro Murafuji
DOI:10.1246/bcsj.63.950
日期:1990.3
dimethyl sulfide and triphenylarsine in benzene at room temperature, giving the corresponding sulfonium and arsonium ylides in moderate to good yields, but they failed to exchange the ylide functionality with triphenylphosphine in most cases and with triphenylstibine in all cases examined, decomposition leading to the C– or O-phenylation of 1,3-dicarbonyl portion being the major reaction that took place