EP4617260A1 — Production method for 1-alkyl-5-hydroxypyrazole
Assigned to Mitsubishi Gas Chemical Next Company Inc · Expires 2025-09-17 · 1y expired
What this patent protects
The present invention provides a production method that can easily produce a 1-alkyl-5-hydroxypyrazole by subjecting a dialkylaminoacrylate ester and an alkylhydrazine to a reaction as represented by the following reaction formula A. (Reaction formula A) (In the formula, R<sub…
USPTO Abstract
The present invention provides a production method that can easily produce a 1-alkyl-5-hydroxypyrazole by subjecting a dialkylaminoacrylate ester and an alkylhydrazine to a reaction as represented by the following reaction formula A. (Reaction formula A) (In the formula, R<sub>1</sub>, R<sub>2</sub>, and R<sub>3</sub> are each independently a C1 to C6 alkyl group, R<sub>4</sub> is a hydrogen atom, a C1 to C6 alkyl group, a C2 to C6 alkenyl group, a C3 to C6 cycloalkyl group, or an aryl group, which groups are optionally substituted with halogen, a hydroxy group, an alkoxy group, or a C1 to C6 alkyl group.)
Drugs covered by this patent
- Antizol (FOMEPIZOLE) · Par Pharm Inc
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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