Organometallics

. alpha.-Trimethylsilyl boronic esters. Pinacol lithio (trimethylsilyl) methaneboronate, homologation of boronic esters with [chloro (trimethylsilyl) methyl] lithium, and …

DS Matteson, D Majumdar

Index: Matteson, Donald S.; Majumdar, Debesh Organometallics, 1983 , vol. 2, p. 230 - 236

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Citation Number: 72

Abstract

Pinacol (trimethyhily1) methaneboronate has been prepared from (trimethyhily1) methylmagnesium chloride and has been lithiated with lithium 2, 2, 6, 6- tetramethylpiperidide. Pinacol lithio (trimethylsily1)-methaneboronate with alkyl halides efficiently yields pinacol 1-(trimethylsily1) alkane-1-boronates and with aldehydes or ketones eliminates silicon exclusively to form pinacol 1-alkene-1-boronates, with mostly 2 ...