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公开(公告)号:US06512114B1
公开(公告)日:2003-01-28
申请号:US09344280
申请日:1999-06-30
IPC分类号: C07D48712
CPC分类号: C07D487/04
摘要: The present invention provides a process for the synthesis of Midazolam I from a compound of formula II, using thermodynamic, basic workup conditions. Additional steps to isolate the pure bulk product follow.
摘要翻译: 本发明提供了一种使用热力学,碱性处理条件合成咪达唑仑的方法,式II化合物。 隔离纯散装产品的其他步骤如下。
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公开(公告)号:US5684154A
公开(公告)日:1997-11-04
申请号:US602945
申请日:1996-02-16
IPC分类号: C07D217/20 , C07D217/24
CPC分类号: C07D217/20
摘要: A process of producing atracurium besylate that substantially reduces the level of impurities in the final product and avoids the repeated use of ether is provided. In accordance with such a process, N, N'-4,10-dioxa-3,11-dioxotridecylene-1,13-bis-tetrahydropapaverine (Compound 1), methyl benzenesulfonate and a catalytic amount of an insoluble base in a solvent are combined to form a reaction mixture that is maintained for a period of time sufficient for atracurium besylate formation. The reaction mixture is then filtered to remove the insoluble base and the atracuriurn besylate is precipitated.
摘要翻译: 提供了大大降低最终产品中杂质水平并避免重复使用乙醚的苯磺酸阿曲库铵的方法。 按照这种方法,N,N'-4,10-二氧杂-3,11-二氧代二亚甲基-1,13-双 - 四氢吡哆胺(化合物1),苯磺酸甲酯和催化量的不溶碱在溶剂中是 合并形成反应混合物,该反应混合物保持足够长的苯磺酸阿卡库铵形成时间。 然后将反应混合物过滤以除去不溶性碱,并沉淀出苯甲酸阿司匹林。
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公开(公告)号:US5998669A
公开(公告)日:1999-12-07
申请号:US154848
申请日:1998-09-17
IPC分类号: C07B61/00 , C07C213/02 , C07C215/10 , C07C209/26
CPC分类号: C07C213/02
摘要: The present invention relates to a process of making 2-amino-1,3-propanediol by reacting 1,3-dihyrdroxyacetone dimer with an amine compound.
摘要翻译: 本发明涉及通过使1,3-二羟基丙酮二聚体与胺化合物反应制备2-氨基-1,3-丙二醇的方法。
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