基本信息:
- 专利标题： PROCESS FOR IMPROVING ENANTIOMERIC PURITY OF ALDEHYDES
- 专利标题（中）：勾引用于改进纯度的对映体ALDEHYDES
- 申请号：EP95925260.0 申请日：1995-06-23
- 公开(公告)号：EP0766658A1 公开(公告)日：1997-04-09
- 发明人： BARNER, Bruce, Armin , BRIGGS, John, Robert , KURLAND, Jonathan, Joshua , MOYERS, Charles, Guthrie, Jr.
- 申请人： UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION , Barner, Bruce Armin , Briggs, John Robert , Kurland, Jonathan Joshua , Moyers, Charles Guthrie Jr.
- 申请人地址： 39 Old Ridgebury Road Danbury, Connecticut 06817-0001 US
- 专利权人： UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION,Barner, Bruce Armin,Briggs, John Robert,Kurland, Jonathan Joshua,Moyers, Charles Guthrie Jr.
- 当前专利权人： UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION,Barner, Bruce Armin,Briggs, John Robert,Kurland, Jonathan Joshua,Moyers, Charles Guthrie Jr.
- 当前专利权人地址： 39 Old Ridgebury Road Danbury, Connecticut 06817-0001 US
- 代理机构： W.P. Thompson & Co.
- 优先权： US19940265207 19940624; US19950398760 19950306
- 国际公布： WO1996000200 19960104
- 主分类号： C07C45
- IPC分类号： C07C45 ; C07C51
摘要：
This invention relates to a process for producing an optically active aldehyde (first aldehyde) containing a reduced amount of the corresponding enantiomeric aldehyde (second aldehyde) which process comprises: (1) providing an initial solution containing a non-eutectic mixture of the first aldehyde and the second aldehyde, which mixture has a composition in the compositional region where only the first aldehyde crystallizes when its solubility limit in the solution is exceeded, and (2) maintaining the solution at a temperature above the eutectic temperature of the mixture and under conditions such that the solubility limit of the first aldehyde is exceeded so as to form a crystalline first aldehyde containing relatively less of the second aldehyde than was present in the initial solution.