发明名称 |
PROCESSES FOR THE PREPARATION OF 4(5)-AMINO-5(4)-CARBOXAMIDOIMIDAZOLES AND INTERMEDIATES THEREOF |
摘要 |
The invention provides novel processes for preparing efficiently compounds of general formula (I) (wherein R 1 and R2 are each independently hydrogen, optionally substituted C1-C10 alkyl, C3-C14 hydrocarbyl bearing an alicyclic skeleton, or the like) and intermediates thereof. Compounds of general formula (I) can be prepared by subjecting compounds of general formula (II) and/or salts thereof to cyclization hydrolysis in an aqueous basic solution. Further, compounds of general formula (II) can be prepared from industrially easily available diaminomaleonitrile in a high yield.
|
申请公布号 |
KR20050053622(A) |
申请公布日期 |
2005.06.08 |
申请号 |
KR20057002731 |
申请日期 |
2005.02.16 |
申请人 |
NIPPON SODA CO., LTD.;IBARAKI KASEI CO., LTD. |
发明人 |
SHIBASAKI HIROAKI;NAGASAKI FUMIHIKO;TAKASE MITSURU;YAMAZAKI SATORU;ISHII YUTAKA;OOHATA KIMIHIKO |
分类号 |
C07C257/10;C07C257/14;(IPC1-7):C07C257/14 |
主分类号 |
C07C257/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|