Regioselectivity in preparation of unsymmetrically substituted 3-aminoquinoxalin-2 (1 H)-ones

…, C Gönczi, B Podányi, G Tóth, I Hermecz

Index: Csikos, Eva; Goenczi, Csaba; Podanyi, Benjamin; Toth, Gabor; Hermecz, Istvan Journal of the Chemical Society - Perkin Transactions 1, 1999 , # 13 p. 1789 - 1793

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Citation Number: 2

Abstract

Regioisomer formation has to be considered in the preparation of quinoxalines having different substituents at the 2-and 3-position. Oxalomonoimidic acid dimethyl ester or oxalomonoimidic acid diethyl ester, chloro (methylimino) acetic acid ethyl ester, chloro [(Z)- hydroxyimino] acetic acid ethyl ester and (Z)-2-[(E)-hydroxyimino] acetohydroximoyl chloride were applied to the synthesis of 3-aminoquinoxalin-2 (1H)-one derivatives, and the isomer ...