WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1992012136) PROCESS FOR PRODUCING HEXAHYDROPYRIDAZINE-1,2-DICARBOXYLIC ACID DERIVATIVE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/012136    International Application No.:    PCT/JP1991/001772
Publication Date: 23.07.1992 International Filing Date: 26.12.1991
IPC:
C07D 237/04 (2006.01), C07D 513/04 (2006.01)
Applicants: IHARA CHEMICAL INDUSTRY CO., LTD. [JP/JP]; 4-26, Ikenohata 1-chome, Taitoh-ku, Tokyo 110 (JP) (For All Designated States Except US).
NAKAYAMA, Tadashi [JP/JP]; (JP) (For US Only)
Inventors: NAKAYAMA, Tadashi; (JP)
Agent: YAMAMOTO, Ryozo; Torimoto Kogyo Bldg., 38, Kanda-Higashimatsushitacho, Chiyoda-ku, Tokyo 101 (JP)
Priority Data:
2/416789 27.12.1990 JP
Title (EN) PROCESS FOR PRODUCING HEXAHYDROPYRIDAZINE-1,2-DICARBOXYLIC ACID DERIVATIVE
(FR) PROCEDE DE PRODUCTION D'UN DERIVE D'ACIDE HEXAHYDROPYRIDAZINE-1,2-DICARBOXYLIQUE
Abstract: front page image
(EN)A process for producing a hexahydropyridazine-1,2-dicarboxylic acid derivative represented by general formula (3) industrially in a good yield; wherein R represents alkoxy or aryl, which comprises reacting a hydrazinedicarboxylic acid derivative represented by the general formula (1): ROC-NH-HN-COR, wherein R is as defined above, with a dihalogenobutane represented by the general formula (2): X-CH¿2?CH¿2?CH¿2?CH¿2?-X, wherein X represents chlorine or bromine, in the presence of a base selected between alkali metal carbonate and hydroxide.
(FR)Procédé de production industrielle à un haut rendement d'un dérivé d'acide hexahydropyridazine-1,2-dicarboxylique répondant à la formule générale (3) dans laquelle R représente alcoxy ou aryle, ledit procédé consistant à faire réagir un dérivé d'acide hydrazinedicarboxylique répondant à la formule générale (1): ROC-NH-HN-COR, dans laquelle R a la même définition que ci-dessus, avec un dihalogénobutane répondant à la formule générale (2): X-CH¿2?CH¿2?CH¿2?CH¿2?-X, dans laquelle X représente chlore ou brome, en présence d'une base choisie entre le carbonate et l'hydroxyde de métal alcalin.
Designated States: KR, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)