Process for preparing a acylhyrazino pyrazole derivative
US5688964A · kind A · utility
3Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Feb 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for making a compound of formula III ##STR1## wherein R.sub.6 is a group bonded to the rest of the molecule by a carbon atom; PA1 R.sub.3 is a group containing a carbon atom and bonded to the rest of the molecule by a carbon atom or by a heteroatom; and PA1 X is hydrogen or a substituent, comprising: PA1 reacting with hydrazine a compound of formula II ##STR2## or a dehydrated analog of formula II, wherein R.sub.3, R.sub.6, and X have the same meaning as for formula III, and Y is a nucleofugal leaving group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.