Desymmetrization of Cyclic meso-Epoxides with Silicon Tetrachloride Catalyzed by PINDOX, a Chiral Bipyridine Mono-N-oxide
摘要:
PINDOX 8 has been identified as a chiral organocatalyst for the enantioselective ring-opening of cyclic meso-epoxides with SiCl4 to produce chlorohydrins in up to 90% ee. The catalyst is most effective with saturated cyclic substrates containing more than seven carbon units.