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ethyl 3-(difluoromethyl)-1-methylpyrazole-4-carboxylate

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Origin: China

Cas No: 141573-95-7

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 141573-95-7 Formula: C8H10F2N2O2 Molecular Weight: 204.17400

Description

3-Difluoromethyl-1-methylpyrazole-4-carboxylic Acid Ethyl Ester is useful synthetic intermediate. It can be used to prepare 3-difluoromethylpyrazolecarboxamide fungicides.

Basic Info

Chemical Name	ethyl 3-(difluoromethyl)-1-methylpyrazole-4-carboxylate
Synonyms	1H-Pyrazole-4-carboxylicacid,3-(difluoromethyl)-1-methyl-,ethyl ester; 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid ethylester; ethyl 1-methyl-3-difluoromethyl-pyrazole-4-carboxylate; 3-(difluoromethyl)-1-methyl-1H-pyrazol-4-carboxylic acid ethyl ester; ETHYL 3-(DIFLUOROMETHYL)-1-METHYL-1H-PYRAZOLE-4-CARBOXYLATE;
CAS No.	141573-95-7
Molecular Formula	C8H10F2N2O2
Molecular Weight	204.17400
PSA	44.12000
LogP	1.53440

Properties

Density	1.307 g/cm3
Boiling Point	288.448ºC at 760 mmHg
Flash Point	128.249ºC
Refractive Index	1.494
Vapor Pressure	0.002mmHg at 25°C

Safety Info

HS Code	2933199090

Synthesis Route

Isopropylidenehydrazine+Ethyl 2-ethoxymethylene-4,4,4-trifluoro-3-oxobutyrate→ethyl 3-(difluoromethyl)-1-methylpyrazole-4-carboxylate
1-methyl-2-dfluoroacetylhydrazine+ethyl propiolate→ethyl 3-(difluoromethyl)-1-methylpyrazole-4-carboxylate
ethyl 4,4-difluoro-3-oxo-2-(piperidin-1-ylmethylene)butanoate+Methylhydrazine→ethyl 3-(difluoromethyl)-1-methylpyrazole-4-carboxylate

Precursor

Isopropylidenehydrazine
ethyl 4,4-difluoro-3-oxo-2-(piperidin-1-ylmethylene)butanoate
1-methyl-2-dfluoroacetylhydrazine
Ethyl 2-ethoxymethylene-4,4,4-trifluoro-3-oxobutyrate

Downstream Product

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3-(difluoromethyl)-1-methylpyrazole-4-carboxylic acid

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