PROCESS FOR PREPARATION OF BENZYLPIPERIDINE COMPOUNDS
申请人:Takeda Chemical Industries, Ltd.
公开号:EP1359145A1
公开(公告)日:2003-11-05
According to the process as shown in the following scheme having a step for reacting Compound (I) with Compound (II) to produce Compound (III), benzylpiperidine compounds useful as synthesis starting materials of pharmaceutical agents, agricultural chemicals and the like can be produced conveniently by a short step:
wherein R1 is a hydrogen atom or an amino-protecting group, R2 is a hydrogen atom, a hydrocarbon group optionally having substituents, an alkoxy group optionally having substituents or a heterocyclic group optionally having substituents, and R3 is a lower alkyl group.
Process for preparation of benzylpiperidine compounds
申请人:Miki Shokyo
公开号:US20060094877A1
公开(公告)日:2006-05-04
According to the process as shown in the following scheme having a step for reacting Compound (I) with Compound (II) to produce Compound (III), benzylpiperidine compounds useful as synthesis starting materials of pharmaceutical agents, agricultural chemicals and the like can be produced conveniently by a short step:
wherein R
1
is a hydrogen atom or an amino-protecting group, R
2
is a hydrogen atom, a hydrocarbon group optionally having substituents, an alkoxy group optionally having substituents or a heterocyclic group optionally having substituents, and R
3
is a lower alkyl group.