Organometalliques portant une fonction eliminable en β: II. Competition en α et β eliminations a partir de β alkoxy et silyloxy α, α-dichlorocarbenoides

J Villieras, C Bacquet, JF Normant

Index: Villieras,J. et al. Journal of Organometallic Chemistry, 1975 , vol. 97, p. 355 - 374

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Citation Number: 25

Abstract

Abstract β-Alkoxy and-silyloxy α, α-dichlorocarbenoids, stable at low temperature (− 100 C), undergo a rapid decomposition upon warming, either by α-elimination of ClLi or β- elimination of ROLi. β-Elimination is generally observed and leads to the formation of a dichloroalkene which reacts with excess of butyllithium (or lithium dialkylamide) to give the corresponding mono-substituted alkyne (or chloroalkyne) with good yields. α-Elimination ...