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公开(公告)号:DE1670251A1
公开(公告)日:1972-03-30
申请号:DE1670251
申请日:1967-07-29
Applicant: BASF AG
Inventor: HOFFMANN HERWIG DR , ADAM KARL DR , FUERST ERNST DR , HAARER ERICH DR , TOUSSAINT HERBERT DR , PLASS REINHOLD DR , WINDERL SIEGFRIED DR
IPC: C07D295/02
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公开(公告)号:DE1795007A1
公开(公告)日:1972-01-20
申请号:DE1795007
申请日:1968-07-27
Applicant: BASF AG
Inventor: HIMMELE WALTER DR , HOFMANN ERNST DR , HOFFMANN HERWIG DR , PLASS REINHOLD DR
IPC: C07D201/08
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公开(公告)号:DE2137942A1
公开(公告)日:1973-02-08
申请号:DE2137942
申请日:1971-07-29
Applicant: BASF AG
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公开(公告)号:DE2208925A1
公开(公告)日:1973-09-06
申请号:DE2208925
申请日:1972-02-25
Applicant: BASF AG
Inventor: SCHENK WALTER DR , PLASS REINHOLD DR
IPC: C07C67/00 , C07C301/00 , C07C303/02 , C07C309/14 , C07C143/14
Abstract: Aminoethane sulphonic acids of formula:- where R1 is H or aliphatic are prepd by reaction of (I) ethionic anhydride at 60-160 pref. 70-150 degrees C with a mixture of alkali metal/alkaline earth derivatives (oxides, hydroxide, carbonates) and water at pH >=9, (2) reaction with ammonia or an amine:- above the critical temp. of (I) (200-380 degrees C). The process gives better yields with fewer by-products.
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