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3,5-DICHLOROPYRAZINE-2-CARBOXAMIDE synthesis

1synthesis methods

Yield:-

Reaction Conditions:

Stage #1:3,5-dichloropyrazine-2-carboxylic acid with thionyl chloride
Stage #2: with ammonia in dichloromethane

References:

YAMANOUCHI PHARMACEUTICAL CO. LTD. EP1184376, 2002, A1 Location in patent:Page 12

Ethambutol Isoniazid 2-AMINOMETHYL-3-CHLOROPYRAZINE (2-Chlorophenyl)methanamine hydrochloride 2,6-Dichloropyrazine 5-CHLOROPYRAZINE-2-CARBALDEHYDE

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