发明公开
EP0838458A1 NOVEL REAGENT FOR TETRAZOLE SYNTHESIS AND PROCESS FOR PRODUCING TETRAZOLES THEREWITH
失效
FOR四唑合成及工艺新试剂用于生产四唑与这种试剂
- 专利标题： NOVEL REAGENT FOR TETRAZOLE SYNTHESIS AND PROCESS FOR PRODUCING TETRAZOLES THEREWITH
- 专利标题（中）： FOR四唑合成及工艺新试剂用于生产四唑与这种试剂
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申请号： EP96914446.8申请日： 1996-05-27
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公开(公告)号： EP0838458A1公开(公告)日： 1998-04-29
- 发明人: TOKUHARA, Ginro , YAMAGUCHI, Tadashi , IWASAKI, Tetsuya
- 申请人： CHUGOKU KAYAKU KABUSHIKI KAISHA , WAKUNAGA SEIYAKU KABUSHIKI KAISHA
- 申请人地址： 1-6 Tenno Shioya-cho Kure 737 JP
- 专利权人： CHUGOKU KAYAKU KABUSHIKI KAISHA,WAKUNAGA SEIYAKU KABUSHIKI KAISHA
- 当前专利权人： CHUGOKU KAYAKU KABUSHIKI KAISHA,WAKUNAGA SEIYAKU KABUSHIKI KAISHA
- 当前专利权人地址： 1-6 Tenno Shioya-cho Kure 737 JP
- 代理机构： Hansen, Bernd, Dr. Dipl.-Chem.
- 优先权： JP128576/95 19950526
- 国际公布： WO9637481 19961128
- 主分类号： C07D257/04
- IPC分类号： C07D257/04
摘要：
Analkali metal azide and zinc chloride are used in combination as a tetrazole forming agent when producing 1H-tetrazoles of the formula (II):
(where R is any substituent) from carbonitriles of the formula (I):
R-CN (I)
(where R has the same meaning as defined above). The tetrazole forming agent permits many kinds of solvents to be used and can in principle be used with any carbonitriles. In addition, the use of inexpensive zinc chloride leads to cost reduction.
(where R is any substituent) from carbonitriles of the formula (I):
R-CN (I)
(where R has the same meaning as defined above). The tetrazole forming agent permits many kinds of solvents to be used and can in principle be used with any carbonitriles. In addition, the use of inexpensive zinc chloride leads to cost reduction.
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