Phase-Transfer Catalysis in the Ullmann Synthesis of Substituted Triphenylamines

Sylvie F. Gauthier; Jean Mj Frechet

doi:10.1055/s-1987-27953

Abstract

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A variety of substituted triphenylamine derivatives were prepared in nearly quantitative yields by the use of 18-crown-6 as a phase transfer catalyst under the Ullmann reaction conditions.

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