Internal redox catalyzed by triphenylphosphine

BM Trost, U Kazmaier

Index: Trost, Barry M.; Kazmaier, Uli Journal of the American Chemical Society, 1992 , vol. 114, # 20 p. 7933 - 7935

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Citation Number: 192

Abstract

The requirement of an electron-withdrawing group is clearly established by the competitions illustrated by the examples of entries 7 and 8. Smooth isomerization of the ynoate to the corresponding dienoate occurred with no effect whatsoever on the nonconjugated acetylene (nor isolated olefin). Given the reactivity order established, we examined the internal competition among acetylenic ketones, esters, and amides. The ynone of entry 9 ...