REACTION OF TRICHLOROETHENE AND TETRACHLOROETHENE ON THIOPHENE ALDEHYDE DI-n-BUTYLACETAL AT LOW TEMPERATURE

Abstract

The reaction of thiophene aldehyde di-n-butylacetal catalyzed by haloethenes in contrast to those catalyzed by Lewis acids, N-halocompounds etc., has received only little attention. Aliphatic acetals give ether and alcohols as the major products, while aromatic homocyclic acetals yield esters and ethers as the main products7. This feature induced the authors to take up the title investigation. Haloethenes are synthetically very useful reagents and vary widely in their acceptor synthon character and reactivity, hence their application in the present work.