Abstract
Abstract2,2,2‐Trichloroacetophenone derivatives were synthesized via decarboxylative trichlorination from arylpropiolic acids and trichloroisocyanuric acid (TCCA). The reaction was performed in the presence of water at room temperature, and the desired products were obtained in good yields. The reaction showed good functional group tolerance towards halide, cyano, nitro, ketone, ester and aldehyde groups. In addition, the 2,2,2‐trichloroacetophenone derivatives were readily transformed into esters, amides, and hydrazides. Based on experiments with H218O (water‐18O), we proposed a cationic reaction pathway as the mechanism and suggested two different pathways for producing aryl‐ and alkyl‐substituted propiolic acids.magnified image
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