发明名称 |
PROCESS FOR PRODUCING SEMICARBAZIDE |
摘要 |
A process for producing semicarbazide which comprises reacting a compound of formula (I) with ammonia in the absence or presence of a catalyst comprising a chloride, hydroxide, sulfate, carbonate, acetate, salicylate, amine complex or ethylenediamine complex of zinc or cadmium, or a mixture thereof. This process is advantageous in that it is free from the problem of the use of a large amount of sodium hydroxide and the generation of by-product sodium carbonate. <CHEM> |
申请公布号 |
CA2075805(A1) |
申请公布日期 |
1992.06.28 |
申请号 |
CA19912075805 |
申请日期 |
1991.06.13 |
申请人 |
OTSUKA KAGAKU KABUSHIKI KAISHA |
发明人 |
MAEKAWA, TSUKASA;HAYASHI, HIROYASU;KAMIYA, KAZUSAKI |
分类号 |
B01J23/06;B01J27/053;B01J27/138;B01J27/232;B01J31/04;B01J31/18;B01J31/22;C07B61/00;C07C281/06 |
主分类号 |
B01J23/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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