Reaction of 2'-hydroxychalcone dibromides with pyridine

…, M Bokadia, T Sharma, JA Donnelly

Index: Reddy, N. Jagannadha; Bokadia, Mishrimal; Sharma, Tarachand; Donnelly, John A. Journal of Organic Chemistry, 1981 , vol. 46, # 3 p. 638 - 641

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Citation Number: 13

Abstract

2'-Hydroxychalcone (5a) reacted with pyridine perbromide, pyridine-bromine complex, and N-bromosuccinimide to form 3', 5'-dibromo-2'-hydroxychalcone (6a). Similarly, 2'-hydroxy-4- methoxychalcone (5b), 4-chloro-2'-hydroxychalcone (5c), and 2'-hydroxy-4-methoxy-5/- methylchalcone (5d) gave the corresponding nuclear brominated chalcones (6b-d). Authentic samples of 6, 8-dibromo-4'-methoxyflavone (4c), 8-bromo-4'-methoxy-6- ...