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公开(公告)号:US20100190997A1
公开(公告)日:2010-07-29
申请号:US12083665
申请日:2006-09-04
申请人: Hussain Haider , Kirtipalsinh Saijansinh Solanki , Gautam Pal , Manoj Kumar Singh , Jay Shantilal Kothari , Virendra Kumar Agarwal
发明人: Hussain Haider , Kirtipalsinh Saijansinh Solanki , Gautam Pal , Manoj Kumar Singh , Jay Shantilal Kothari , Virendra Kumar Agarwal
IPC分类号: C07D249/08
CPC分类号: C07D249/08
摘要: The present invention relates to the process for the preparation of Letrozole free from its regioisomer (7) and other impurities by selective extraction of desired intermediate (3) using suitable solvent and mixture of solvents.
摘要翻译: 本发明涉及通过使用合适的溶剂和溶剂混合物选择性提取所需中间体(3)来制备游离异构体(7)和其他杂质的来曲唑的方法。
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公开(公告)号:US20090221837A1
公开(公告)日:2009-09-03
申请号:US11992708
申请日:2006-09-04
申请人: Kirtipalsinh Saijansinh Solanki , Gautam Pal , Hussain Haider , Manoj Kumar Singh , Jay Shantilal Kothari , Virendra Kumar Agarwal
发明人: Kirtipalsinh Saijansinh Solanki , Gautam Pal , Hussain Haider , Manoj Kumar Singh , Jay Shantilal Kothari , Virendra Kumar Agarwal
IPC分类号: C07D249/08 , C07C255/51
CPC分类号: C07D249/08 , C07C253/30 , C07C255/35
摘要: The present invention relates to the improved process for the preparation of Anastrozole free from the impurities arising due to impure 3,5-bis-(1-cyano-1-methylethyl)benzylbromide (2) and other related impurities resulting from incomplete/over-reaction of 2,2-(5-methyl-1,3-phenylene)-bis(2-methylpropionitrile (I).
摘要翻译: 本发明涉及制备不含由于不纯的3,5-双 - (1-氰基-1-甲基乙基)苄基溴(2)和由不完全/过量产生的其它相关杂质而产生的杂质的阿拉曲唑的改进方法。 2,2-(5-甲基-1,3-亚苯基) - 双(2-甲基丙腈(I))的反应。
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公开(公告)号:US07872144B2
公开(公告)日:2011-01-18
申请号:US11922064
申请日:2005-06-13
申请人: Satish Chandra Pandey , Hussain Haider , Sudhanshu Saxena , Manoj Kumar Singh , Rajesh Kumar Thaper , Sushil Kumar Dubey
发明人: Satish Chandra Pandey , Hussain Haider , Sudhanshu Saxena , Manoj Kumar Singh , Rajesh Kumar Thaper , Sushil Kumar Dubey
CPC分类号: C07F9/3873 , C07F9/386 , C07F9/58 , C07F9/6506 , C07F9/6561
摘要: Disclosed herein is a process for producing bisphosphonic acids and salts thereof. The process comprising reacting a carboxylic acid of Formula [I] with phosphorous acid and halophosphorus compound in the presence of a solvent selected from aliphatic hydrocarbon or water miscible cyclic ether. Further, the present invention also provides novel forms of bisphosphonic acids and process for preparation thereof.
摘要翻译: 本文公开了一种生产双膦酸及其盐的方法。 该方法包括在选自脂族烃或水混溶性环醚的溶剂存在下使式[I]的羧酸与亚磷酸和卤代磷化合物反应。 此外,本发明还提供双膦酸的新形式及其制备方法。
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公开(公告)号:US20090312551A1
公开(公告)日:2009-12-17
申请号:US11922064
申请日:2005-06-13
申请人: Satish Chandra Pandey , Hussain Haider , Sudhanshu Saxena , Manoj Kumar Singh , Rajesh Kumar Thaper , Sushil Kumar Dubey
发明人: Satish Chandra Pandey , Hussain Haider , Sudhanshu Saxena , Manoj Kumar Singh , Rajesh Kumar Thaper , Sushil Kumar Dubey
IPC分类号: C07F9/38 , C07F9/6506 , C07F9/58
CPC分类号: C07F9/3873 , C07F9/386 , C07F9/58 , C07F9/6506 , C07F9/6561
摘要: Disclosed herein is a process for producing bisphosphonic acids and salts thereof. The process comprising reacting a carboxylic acid of Formula [I] with phosphorous acid and halophosphorus compound in the presence of a solvent selected from aliphatic hydrocarbon or water miscible cyclic ether. Further, the present invention also provides novel forms of bisphosphonic acids and process for preparation thereof.
摘要翻译: 本文公开了一种生产双膦酸及其盐的方法。 该方法包括在选自脂族烃或水混溶性环醚的溶剂的存在下使式[I]的羧酸与亚磷酸和卤代磷化合物反应。 此外,本发明还提供双膦酸的新形式及其制备方法。
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