Process for preparing optically active 3-hydroxypyrrolidine derivatives
申请人:Takasago International Corporation
公开号:US05144042A1
公开(公告)日:1992-09-01
A process for preparing optically active 3-hydroxypyrrolidine derivatives useful as intermediates represented by formula (III): ##STR1## wherein Q represents a substituted or unsubstituted phenyl group; and * indicates an asymmetric carbon atom, comprising reacting an optically active 4-halo-3-hydroxybutane derivative represented by formula (I): ##STR2## wherein * is as defined above; R.sup.1 represents a lower alkyl group or a substituted or unsubstituted phenyl group; and X represents a halogen atom, with a benzylamine derivative represented by formula (II): H.sub.2 NCH.sub.2 Q (II) wherein Q is as defined above, is disclosed. The starting compound (I) is easily available through chemical synthesis. Any complicated procedure or use of an expensive reagent is not required.
A process for preparing 3-hydroxythiolane which is characterized by reacting a compound of the following formula,
wherein X is a halogen atom, and R2 is a substituted or unsubstituted alkyl group, substituted or unsubstituted aralkyl group, or substituted or unsubstituted aryl group,
with a metal sulfide.
A process for preparing 3-hydroxythiolane which is characterized in reacting a compound of the following formula,
wherein X is halogen atom, and R
2
is substituted or unsubstituted alkyl group, substituted or unsubstituted aralkyl group, or substituted or unsubstituted aryl group, with a metal sulfide.