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296274-32-3

2-CHLORO-4,5-DIFLUOROBENZAMIDE synthesis

1synthesis methods
110877-64-0 Synthesis
2-Chloro-4,5-difluorobenzoic acid

110877-64-0
228 suppliers
$5.00/1g

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Yield:296274-32-3 76%

Reaction Conditions:

Stage #1: 2-chloro-4,5-difluorobenzoic acidwith 1-hydroxy-pyrrolidine-2,5-dione;1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride in N,N-dimethyl-formamide at 0 - 20; for 1 h;
Stage #2: with ammonia in water;N,N-dimethyl-formamide at 0 - 20; for 0.5 h;

References:

WO2007/15567,2007,A1 Location in patent:Page/Page column 114-115