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公开(公告)号:US06399815B2
公开(公告)日:2002-06-04
申请号:US09891434
申请日:2001-06-26
申请人: Takatugu Suzuki
发明人: Takatugu Suzuki
IPC分类号: C07C31302
CPC分类号: C07C313/04
摘要: Disclosed is a process to prepare a sulfinate, which is useful for preparing a synthetic intermediate of an organic compound, especially for a color coupler, characterized by reducing a sulfonyl chloride with a sulfite or a hydrogensulfite in the presence of a hydrogenphosphate.
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2.
公开(公告)号:US06586622B2
公开(公告)日:2003-07-01
申请号:US09835671
申请日:2001-04-16
申请人: Josef Berghofer , Harry Rothmann
发明人: Josef Berghofer , Harry Rothmann
IPC分类号: C07C31302
CPC分类号: D06P1/62 , C07C313/04 , C08F4/40 , C11D3/0042 , C11D3/3454 , C11D3/3472 , C11D3/349 , D06P1/221 , D06P5/134 , D06P5/155 , D21C9/1084
摘要: The present invention relates to sulfinic acid compounds of the formula (I) where the substituents are as defined in the description. The novel sulfinic acid compounds can be used as reducing agents which do not eliminate formaldehyde.
摘要翻译: 本发明涉及式(I)的亚磺酸化合物,其中取代基如说明书中所定义。新亚磺酸化合物可用作不消除甲醛的还原剂。
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3.
公开(公告)号:US06211400B1
公开(公告)日:2001-04-03
申请号:US09319108
申请日:1999-05-27
申请人: Josef Berghofer , Harry Rothmann
发明人: Josef Berghofer , Harry Rothmann
IPC分类号: C07C31302
CPC分类号: D06P1/62 , C07C313/04 , C08F4/40 , C11D3/0042 , C11D3/3454 , C11D3/3472 , C11D3/349 , D06P1/221 , D06P5/134 , D06P5/155 , D21C9/1084
摘要: The present invention relates to sulfinic acid compounds of the formula (I) where the substituents are as defined in the description. The novel sulfinic acid compounds can be used as reducing agents which do not eliminate formaldehyde.
摘要翻译: 本发明涉及式(I)的亚磺酸化合物,其中取代基如说明书中所定义。新亚磺酸化合物可用作不消除甲醛的还原剂。
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