反应详情

A solution of 10 g (0.033 mole) of 2-amino-4-(3-trifluoromethylphenylcarbamoylmethyl)thiazole, and 2.3 g (0.04 mole) of methyl isocyanate in 50 ml of pyridine was heated at 50° for three hours. The reaction solution was mixed with 400 ml of water and allowed to stand overnight in the refrigerator. On the following morning, the crystalline solid was collected and dried in the oven. There was obtained 10 g of the desired product, m.p. 200°-203°. N.M.R. (dimethyl-d6 sulfoxide) ∂ 2.7-2.8 (CH3, doublet), 6.8 (hetero-aromatic), 7.3-8.1 (aromatic), 10.4 (HNC=0).

1. customOn the following morning, the crystalline solid was collected
2. customdried in the oven