Eosin Y ‐catalyzed reductive homocoupling of para‐quinone methides under visible‐light

A mild and efficient visible-lighted-promoted protocol for the synthesis of tetra-arylethane derivatives has been developed via reductive homocoupling ofp-quinone methides using eosin Y as a photocatalyst. This protocol was found operationally simple and a range of desired products was obtained in satisfactory yields. AbstractIn this manuscript, we demonstrate a visible-light driven dimerization ofpara-quinone methides using eosin Y catalyst via a reductive homocoupling process. This mild and operationally simple methodology was found to be compatible with a variety of differently substitutedpara-quinone methides and a broad range of tetra-arylethane derivatives were obtained in moderate to good yields (47% –87%).

Source: Photochemistry and Photobiology - April 11, 2024 Category: Science Authors: Rekha, Shaheen Fatma, Sonam Sharma, Ramasamy Vijaya Anand Tags: SPECIAL ISSUE RESEARCH ARTICLE Source Type: research