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Published in last 50 years
AbstractDas Selenonium‐N‐p‐toluolsulfonimid (I) ergibt mit den aktiven Methylenverbindun gen (IIa) und (IIb) die Selenonium‐Ylide (III) neben (IV) in guten Ausbeuten, mit (IIc) erfolgt keine Reaktion.
Abstract The treatment of selenonium N-p-toluenesulfonimides and selenoxides except diphenyl selenoxide with active methylene compounds readily afforded the corresponding stable selenonium ylides in relatively high yields.
Stable selenonium ylides with two electron acceptor groups have been synthesized by the interaction between organic selenide dichlorides and active methylene compounds in the presence of a base. The structure of the synthesized ylides has been confirmed by means of their IR, UV and PMR spectra which in general are little different from the spectra of their sulphonium analogues.