公开(公告)号：US3536700A

公开(公告)日：1970-10-27

申请号：US3536700D

申请日：1967-05-03

Applicant: STAMICARBON

Inventor： PECASSE ALBERTUS H ,  NELEMANS JOHANNES E

IPC: C07D201/16 ,  C07D223/12 ,  C07D41/06

CPC classification number: C07D223/12 ,  C07D201/16

公开(公告)号：US3607929A

公开(公告)日：1971-09-21

申请号：US3607929D

申请日：1968-01-03

Applicant: STAMICARBON

Inventor： PECASSE ALBERTUS H ,  BONNEMA JENTJE ,  GEURTS GERARDUS A

IPC: C07C227/34 ,  C07C20060101 ,  C07C229/26 ,  C07C99/12 ,  C07C101/24

CPC classification number: C07C51/487

Abstract: A process for the purification of optically active lysine monohydrochloride, containing racemic lysine monohydrochloride as an optical impurity, is disclosed. In this process the solid salt is treated with water to effect an at least partial dissolution or extraction of the optical antipod of the lysine monohydrochloride which is present in the original salt. The aqueous solution thus formed is separated from the solid phase before an equilibrium state is reached, the solid phase thus obtained being of lower optical purity than the original salt.

公开(公告)号：US3150174A

公开(公告)日：1964-09-22

申请号：US4052560

申请日：1960-07-05

Applicant: STAMICARBON

Inventor： NELEMANS JOHANNES E ,  PECASSE ALBERTUS H

公开(公告)号：US3105067A

公开(公告)日：1963-09-24

申请号：US4251260

申请日：1960-07-13

Applicant: STAMICARBON

Inventor： NELEMANS JOHANNES E ,  PECASSE ALBERTUS H ,  WILLEM PESCH ,  ULRICH VERSTRIJDEN

IPC: C07D223/12

CPC classification number: C07D223/12