反应详情

0.1 g (0.00031 mol) of 4-amino-N-(6-chloro-2-ethylamino-pyrimidin-4-yl)-benzenesulfonamide was dissolved in 20 ml of ethanol and stirred with 0.6 ml (0.0043 mol) of trimethylamine and 0.1 g (0.0015 mol) of methylamine hydrochloride in an autoclave at 130° C. for 4 hours. The reaction mixture was freed from solvent, the residue was suspended in 5 ml of ethanol and treated in an ultrasound bath for 15 minutes. The precipitate was filtered off, dissolved in 150 ml of 1N NaOH and filtered. The filtrate was adjusted to pH 6 with 0.1N HCl. The precipitate was filtered off under suction, washed with water and dried. There was obtained 0.053 g (54%) of 4-amino-N-(2-ethylamino-6-methylamino-pyrimidin-4-yl)-benzenesulfonamide as beige crystals; m.p.: 261-263° C.

1. additiontreated in an ultrasound bath for 15 minutes
2. filtrationThe precipitate was filtered off
3. dissolutiondissolved in 150 ml of 1N NaOH
4. filtrationfiltered
5. filtrationThe precipitate was filtered off under suction
6. washwashed with water
7. customdried