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公开(公告)号:US5142038A
公开(公告)日:1992-08-25
申请号:US734394
申请日:1991-07-23
IPC分类号: C07B57/00 , C07D405/06
CPC分类号: C07D405/06
摘要: Enantiomerically pure .beta.-lactam intermediates of the formula (I) ##STR1## are isolated from a haloalkane solvent through precipitation with methyl-t-butyl ether or methanol. The products thus obtained are key intermediates in the synthesis of antibiotic aagents. The process is appropriate for large scale production.
摘要翻译: 式(I)的对映体纯的β-内酰胺中间体通过用甲基叔丁基醚或甲醇沉淀从卤代烷溶剂中分离。 由此获得的产物是合成抗生素试剂的关键中间体。 该过程适用于大规模生产。
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公开(公告)号:US5606075A
公开(公告)日:1997-02-25
申请号:US481015
申请日:1995-06-07
申请人: David W. Hoard , Wayne D. Luke
发明人: David W. Hoard , Wayne D. Luke
IPC分类号: C07D333/54 , C07D333/56 , C07D333/52 , C07D333/72 , C07D405/00
CPC分类号: C07D333/54 , C07D333/56
摘要: The present invention is directed to new processes for the synthesis of 2-aryl benzo[b]thiophenes.
摘要翻译: 本发明涉及合成2-芳基苯并[b]噻吩的新方法。
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公开(公告)号:US4303591A
公开(公告)日:1981-12-01
申请号:US166004
申请日:1980-07-07
申请人: Ta-sen Chou , Perry C. Heath , Wayne D. Luke
发明人: Ta-sen Chou , Perry C. Heath , Wayne D. Luke
CPC分类号: C07F7/22 , C01G19/003 , C01G19/08
摘要: Stannic chloride is removed from organic solvent-based waste streams by precipitating the salt as a dimethyl sulfoxide complex.
摘要翻译: 通过沉淀作为二甲基亚砜络合物的盐,从有机溶剂基废物流中除去氯化锡。
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公开(公告)号:US5569772A
公开(公告)日:1996-10-29
申请号:US486873
申请日:1995-06-07
申请人: David W. Hoard , Wayne D. Luke
发明人: David W. Hoard , Wayne D. Luke
IPC分类号: C07D333/56 , C07D333/62 , C07D333/64 , C07D333/66
CPC分类号: C07D333/62 , C07D333/56
摘要: The present invention is directed to a new process for the synthesis of 2-aryl benzo[b]thiophenes, and to novel intermediates therefor.
摘要翻译: 本发明涉及一种合成2-芳基苯并[b]噻吩的新方法及其新型中间体。
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公开(公告)号:US5514826A
公开(公告)日:1996-05-07
申请号:US483607
申请日:1995-06-07
申请人: David W. Hoard , Wayne D. Luke
发明人: David W. Hoard , Wayne D. Luke
IPC分类号: C07C313/20 , C07C323/16 , C07D333/56 , C07F7/08 , C07F7/18
CPC分类号: C07C313/20 , C07C323/16 , C07D333/56 , C07F7/0834 , C07F7/1868
摘要: The present invention is directed to novel vinyl sulfenic acid derivatives, useful for the synthesis of benzo b!thiophenes, in particular 2-arylbenzo b!thiophenes.
摘要翻译: 本发明涉及用于合成苯并[b]噻吩,特别是2-芳基苯并[b]噻吩的新型乙烯基亚磺酸衍生物。
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公开(公告)号:US5512701A
公开(公告)日:1996-04-30
申请号:US482692
申请日:1995-06-07
申请人: David W. Hoard , Wayne D. Luke
发明人: David W. Hoard , Wayne D. Luke
IPC分类号: C07D333/56 , C07F7/08 , C07F7/18
CPC分类号: C07D333/56 , C07F7/0834
摘要: The present invention is directed to a new process for the synthesis of vinyl sulfenic acid derivatives. These compounds are useful for the synthesis of benzo b!thiophenes, in particular 2-aryl-benzo b!thiophenes.
摘要翻译: 本发明涉及一种合成乙烯基亚磺酸衍生物的新方法。 这些化合物可用于合成苯并[b]噻吩,特别是2-芳基 - 苯并[b]噻吩。
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