Anomalous Displacements in the Pyrrole Series1

AH Corwin, GG Kleinspehn

Index: Corwin; Kleinspehn Journal of the American Chemical Society, 1953 , vol. 75, p. 2089,2093

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Citation Number: 9

Abstract

That a nionobromination of I should be expected to yield the 2-bromo (11) rather than the 5- bromo isomer (111) follows both from electronic considerations and from the previous demonstration by Fischer and Wieden~ ann~~ that electrophilic attack in the case of formylation does in fact lead to 2-formyl-3-methyl-4-carbethoxypyrrole (VII), 4b* 5a