反应详情

A mixture of methyl 5-[3-,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-1,2-benzisothiazole-3-glyoxylate (0.7500 g, 1.81 mmol), 1,2-diaminobenzene (0.200 g, 1.84 mmol) and ethanol is stirred 16 hours at reflux and filtered hot. The filtrate is concentrated in vacuo to afford the title compound as a light yellow solid (0.480 g, 56.3%, mp >250° C.) which is identified by NMR analysis.

1. temperatureat reflux
2. filtrationfiltered hot
3. concentrationThe filtrate is concentrated in vacuo