发明名称 |
PROCESS FOR PRODUCING HEXAHYDROPYRIDAZINE AND HEXAHYDROPYRIDAZINE-1,2-DICARBOXYLATE DERIVATIVE |
摘要 |
A process for producing a hexahydropyridazine-1,2-dicarboxylate derivative represented by general formula (3) (wherein R<1> and R<2> represent each independently alkyl) by reacting a hydrazinedicarboxylate derivative represented by the general formula (1): R<1>OOC-NH-NH-COOR<2> (wherein R<1> and R<2> are each as defined above) with a dihalogenobutane represented by the general formula (2): X<1>-CH2CH2CH2CH2-X<2> (wherein X<1> and X<2> represent each independently halogen) in the presence of an alkali metal hydroxide, characterized by conducting the reaction in an aprotic polar solvent; and a process for producing hexahydropyridazine by decarboxylating the obtained hexahydropyridazine-1,2-dicarboxylate derivative (3), without being isolated, in the presence of an alkali metal hydroxide and a hydrogen donor compound.
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申请公布号 |
WO9521828(A1) |
申请公布日期 |
1995.08.17 |
申请号 |
WO1995JP00184 |
申请日期 |
1995.02.10 |
申请人 |
IHARA CHEMICAL INDUSTRY CO., LTD.;SUGIYAMA, TATSUO |
发明人 |
SUGIYAMA, TATSUO |
分类号 |
C07D237/04;(IPC1-7):C07D237/04 |
主分类号 |
C07D237/04 |
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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