A Synthesis of Enantiomerically Pure 3- and 3,3-Disubstituted Pyrrolidines
摘要:
Enantiomerically pure bicyclic lactam 1, derived from (S)-phenylglycinol, underwent diastereoselective mono- and dialkylation affording substituted lactams 2 and 3 bearing tertiary and quaternary stereocenters. Reduction with LiAlH4 furnished N-(2'-hydroxy-1'-phenylethyl) pyrrolidines 4 which were efficiently debenzylated by catalytic hydrogenolysis to afford enantiomerically pure 3-mono- and 3,3-disubstituted pyrrolidines 5.
A Synthesis of Enantiomerically Pure 3- and 3,3-Disubstituted Pyrrolidines
摘要:
Enantiomerically pure bicyclic lactam 1, derived from (S)-phenylglycinol, underwent diastereoselective mono- and dialkylation affording substituted lactams 2 and 3 bearing tertiary and quaternary stereocenters. Reduction with LiAlH4 furnished N-(2'-hydroxy-1'-phenylethyl) pyrrolidines 4 which were efficiently debenzylated by catalytic hydrogenolysis to afford enantiomerically pure 3-mono- and 3,3-disubstituted pyrrolidines 5.