Silyl Group Migration in 2-(Trialkylsilyl)thiophenetricarbonylchromium(0) Complexes

1 January 1992

journal article
letter
Published by Georg Thieme Verlag KG in Synlett

Vol. 1992 (02) , 135-136
https://doi.org/10.1055/s-1992-21292

Abstract

Deprotonation of 5-methyl-2-(trialkylsilyl)thiophenetricarbonylchromium(0) complexes (5, R₃ = Me₃, Et₃, i-PrMe₂) with tert-butyllithium resulted in intermolecular silyl transfer reactions which generated, inter alia, 2-methyl-3-(trialkylsilyl) thiophenetricarbonylchromium(0) (7) and 2-methyl-3,5-bis(trialkylsilyl)thiophenetricarbonylchromium(0) (8). The bulky silanes (5, R₃ = t-BuMe₂, i-Pr₃) were stable to these conditions.

Keywords

EM CLASS
TRIALKYLSILYL
THIOPHENETRICARBONYLCHROMIUM
METHYL
MIGRATION
BUME
SILANES

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