Steric Effects in the Base-Catalyzed Cyclization of 1-[2-(Methoxycarbonyl) phenyl]-3-(2-substituted Phenyl) triazenes

M Ludwig, I Bauerová

Index: Ludwig, Miroslav; Bauerova, Ingrid Collection of Czechoslovak Chemical Communications, 1998 , vol. 63, # 12 p. 2075 - 2084

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Abstract

Abstract Eleven model 1-[2-(methoxycarbonyl) phenyl]-3-(2-substituted phenyl) triazenes were synthesized and their cyclization kinetics examined in aqueous-methanolic buffer solutions (51 wt.% methanol) at various pH values. 3 (2-Substituted phenyl) benzo [d][1, 2, 3] triazin-4 (3H)-ones were identified as the cyclization products. The log k obs vs pH plot was linear with a slope of unity. Investigation of the steric and electronic effects of substituents ...

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