Le (chlorodiisopropyl) silyl fluorenyllithium: Un equivalent synthetique du diisopropyl (fluorenylidène) silene

C Couret, J Escudie, G Delpon-Lacaze…

Index: Couret, C.; Escudie, J.; Delpon-Lacaze, G.; Satge, J. Journal of Organometallic Chemistry, 1992 , vol. 440, # 3 p. 233 - 242

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Citation Number: 9

Abstract

Abstract The metalation of chlorodiisopropylfluorenylsilane 1 with n-butyllithium leads to the α-silyllithio compound 3. Compound 3 has a surprising stability and does not afford the diisopropyl (fluorenylidene)-silene but behaves as its synthetic equivalent; ie it is a useful reagent for “Wittig-Peterson” reactions with various carbonyl compounds leading readily to diisopropylsilanone and fluorenylidene derivatives.