Reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:8]2[N:9]=[C:10]([NH:16][C:17]3[CH:22]=[C:21]([CH:23](OC)[O:24]C)[CH:20]=[CH:19][C:18]=3[N+:28]([O-:30])=[O:29])[S:11][C:12]=2[C:13]([NH2:15])=[O:14])[CH:5]=[CH:6][CH:7]=1.Cl>C(#N)C>[Cl:1][C:2]1[CH:3]=[C:4]([C:8]2[N:9]=[C:10]([NH:16][C:17]3[CH:22]=[C:21]([CH:23]=[O:24])[CH:20]=[CH:19][C:18]=3[N+:28]([O-:30])=[O:29])[S:11][C:12]=2[C:13]([NH2:15])=[O:14])[CH:5]=[CH:6][CH:7]=1Participants
4
Procedure
A mixture of 4.43 g (9.9 mmole) of 4-(3-chloro-phenyl)-2-(5-dimethoxymethyl-2-nitro-phenylamino)-thiazole-5-carboxylic acid amide (VI.2a), 80 mL of acetonitrile and 20 mL of 1 M hydrochloric acid was heated at 60 degrees for 2 hours. The mixture was diluted with 200 mL of ice-water. The precipitate was collected by filtration, washed with water, and air dried to give 3.3 g of 4-(3-chloro-phenyl)-2-(5-formyl-2-nitro-phenylamino)-thiazole-5-carboxylic acid amide (VI.2b) as an orange solid.
Workup
- temperaturewas heated at 60 degrees for 2 hours
- filtrationThe precipitate was collected by filtration
- washwashed with water, and air
- customdried
Sources & evidence
- ORD record
- ord-b0d990c1177d4b6e98c30ec1e439b6dd
- Source dataset
- uspto-grants-2011_10
- Patent number
- US08044213B2
Linked notes
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