The enantioselective ring-openingreaction of meso-epoxides with arylthiolscatalyzed by a chiral heterobimetallic Ti–Ga–Salen complex was realized, and the 1,2-mercapto alcohols were obtained in good yields and moderate to high enantioselectivities (up to 92% ee). A strong synergistic cooperation between different Lewis acids in the system was exhibited in the catalytic process.
Catalytic Asymmetric Ring-Opening Reaction of<i>meso</i>-Epoxides with Aryl Selenols and Thiols Catalyzed by a Heterobimetallic Gallium-Titanium-Salen Complex
Abstractmagnified imageA chiral heterobimetallic Lewis acid complex has been developed as an efficient catalyst. The enantioselective desymmetrization of meso‐epoxides with aryl selenols and thiols catalyzed by the heterobimetallic complex has been optimized. The optically active β‐arylseleno alcohols and β‐hydroxy sulfides were obtained in good yields and high enantioselectivities (up to 97% ee and 92% ee, respectively). A strong synergistic effect between different Lewis acids was exhibited in the catalytic process.