[H-].[Na+].[CH3:3][C:4]1[CH:20]=[CH:19][CH:18]=[CH:17][C:5]=1[C:6]([NH:8][C:9]1[S:10][C:11]([N+:14]([O-:16])=[O:15])=[CH:12][N:13]=1)=[O:7].[H][H].I[CH2:24][C:25]([NH2:27])=[O:26]>CN(C)C=O>[CH3:3][C:4]1[CH:20]=[CH:19][CH:18]=[CH:17][C:5]=1[C:6]([N:8]=[C:9]1[N:13]([CH2:24][C:25]([NH2:27])=[O:26])[CH:12]=[C:11]([N+:14]([O-:16])=[O:15])[S:10]1)=[O:7]Sodium hydride in mineral oil (2.1 g, 60% w/w) was added in portions to a stirred suspension of 2-methyl-N-(5-nitro-2-thiazolyl)benzamide (10.5 g) in N,N-dimethylformamide (100 ml). When the evolution of hydrogen ceased, 2-iodoacetamide (11.1 g) was added in portions. The mixture was stirred at room temperature for ca 1 hr., then poured into ice-water. Recrystallization of the separated solid from acetic acid afforded 2-[(2-methylbenzoyl)imino]-5-nitro-4-thiazoline-3-acetamide, m.pt 248°-250°.
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