METHOD OF PREPARING 1-PHENYLPYRAZOLIDINONE-3- OR 4-METHYL -1-PHENYLPYRAZOLIDINONE-3 Russian patent published in 2000 - IPC

Abstract RU 2145600 C1

FIELD: chemical industry. SUBSTANCE: method comprises reacting phenylhydrazine and methyl acrylate or methyl methacrylate in isopropanol at elevated temperature in the presence of condensing agent such as potassium isopropylate. EFFECT: higher yield of the desired products (up to 80%) and improved safety of ecological conditions. 3 ex

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RU 2 145 600 C1

Authors

Krysin E.V.

Polosin V.M.

Dates

2000-02-20—Published

1998-08-21—Filed