Asymmetric desymmetrization of meso-pyrrolidine derivatives by enantiotopic selective CH hydroxylation using (salen)manganese(III) complexes
作者:T. Punniyamurthy、Tsutomu Katsuki
DOI:10.1016/s0040-4020(99)00518-9
日期:1999.7
Chiral (salen)manganese(III) complexes 1 catalyzed the asymmetric desymmetrization of N-protectedmeso-pyrrolidine derivatives 3, 6–8, 15 and 18 by enantiotopicselective C-H oxidation in the presence of terminal oxidant iodosylbenzene. The oxidation occurred chemoselectively at the carbon α to the nitrogen atom to afford optically active hydroxypyrrolidine derivatives 9, 11, 13, 16, 19 and 21 that
Chiral Mn-salen catalyzed enantiotopic selective CH oxidation of meso-pyrrolidine derivatives
作者:T Punniyamurthy、Akio Miyafuji、Tsutomu Katsuki
DOI:10.1016/s0040-4039(98)80001-4
日期:1998.11
Asymmetric desymmetrization of meso-pyrrolidine derivatives was first effected by enantioselective oxidation of the CH bond α to the nitrogen atom using Mn-salen complex 1b as a catalyst.