反应详情

To 3.56 g (18 mMol) 4-(1-propylsulfinyl)-1,2-diaminobenzene in 45 ml methanol is added 1.03 ml acetic acid and 3.84 g (19.8 mMol) 1,3-bis(methoxycarbonyl)-S-methyl isothiourea. The resulting solution is heated to reflux for 21/2 hours, cooled and the solvent stripped. The white solid is digested with water, filtered, washed with ether and dried to yield 4.1 g of the title compound in the form of a white solid, m.p. 215°-216°, yield 81%.

1. temperatureThe resulting solution is heated
2. temperatureto reflux for 21/2 hours
3. temperaturecooled
4. filtrationfiltered
5. washwashed with ether
6. customdried