Photochemical isomerisation of boryl-substituted silole derivatives†‡,10.1039/B927221F

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Photochemical isomerisation of boryl-substituted silole derivatives†‡

Juri Ugolotti,Gerald Kehr,Roland Fröhlich,Gerhard Erker

Chemical Communications Pub Date : 03/25/2010 00:00:00 , DOI:10.1039/B927221F

Abstract

Bis(alkynyl)silanes (1a,b) react with bis(pentafluorophenyl)-borane to 3-boryl-2,5-bis(trimethylsilyl) substituted siloles 3a,b. Subsequent irradiation of 3 with Pyrex filtered UV light resulted in the complete conversion to the new 5-boryl-2,3-bis(trimethylsilyl) substituted siloles 4a,b.