Process for producing N-alkylpyrazoles
US5153329A · kind A · utility
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10Claims
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Key dates
| Filing date | Apr 1, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Apr 1, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D249/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed herein is a process for producing N-alkylpyrazoles represented by the formula (1), which comprises reacting an alkali metal or an alkali metal-containing base with N- unsubstituted pyrazoles represented by the formula (2), to form an alkali metal salt thereof and, subsequently, reacting the obtained alkali metal salt with an alkylating agent. ##STR1## R.sup.1 : H, C.sub.1 -C.sub.4 alkyl; R.sup.2 : C.sub.1 -C.sub.4 alkyl; PA1 n: an integer of 1-3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.