US Patent 7271272 Process for preparing 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate
Patent 7271272 was granted and assigned to LG on September, 2007 by the United States Patent and Trademark Office.
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Patent Inventor Names
Gyo-Hyun Hwang0
Hyun Nam0
Hyun-Ik Shin0
Jae Sung Lee0
Jay-Hyok Chang0
Kyung Hee Lee0
Yeong-Dae Kim0
Young-Keun Kim0
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Patent abstract
The present invention relates to a process for the preparation of 4-aminomethyl-3-alkoxyiminopyrrolidine methane-sulfonate, a key intermediate of quinolone antibiotics. According to the process of the present invention, the total number of steps has been shortened to 2-3 steps, the solid separation is not required, and the use of costly chemicals, particularly (BOC)2O (t-butoxycarbonyl anhydride), several organic solvents and reactants, is eliminated.
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US Patent 07271272 Process for preparing 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate US Patent 7271272 Process for preparing 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate
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Patent Number
072712720
Patent Number
72712720
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0
Patent Jurisdiction
Patent Number
072712720
Date of Patent
September 18, 2007
0Patent Application Number
105483240
Date Filed
March 6, 2004
0Official Website
Patent Primary Examiner
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US Patent 07271272 Process for preparing 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07271272
Date of patent
September 18, 2007
Patent application number
10548324
Date Filed
March 6, 2004
Patent primary examiner
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