silylethenes were prepared in good to excellent yields via one-pot monolododesilylation/isomerization of readily accessible 2-aryl-1,1-bis(silyl)ethenes using N-iodosuccinimide or bis(pyridine)iodoniumtetrafluoroborate under mild conditions.
Synthetically useful 1,1-dibromo-2-arylethenes were readily prepared in good yields via double bromodesilylation of the easily accessible 1,1-bis(trimethylsilyl)-2-arylethenes using N-bromosuccinimide under mild conditions.
A series of new 2-aryl-1,1-bis(trimethylsilyl)ethenes containing ortho-, meta-, and para-substituted aryl or heteroaryl groups has been efficiently synthesized using an improved two-step approach based on a silylative coupling cyclization-Heck coupling/Grignard reaction sequence. The crystal structure of the first 1,1-bis(trimethylsilyl)alk-1-ene containing a heteroaryl group is reported.