Isopropylamine → 4-amino-N-(2-ethylamino-6-isopropylamino-pyrimidin-4-yl)-benzenesulfonamide
Reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:12]2[CH:17]=[C:16](Cl)[N:15]=[C:14]([NH:19][CH2:20][CH3:21])[N:13]=2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH:22]([NH2:25])([CH3:24])[CH3:23]>C(O)C>[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:12]2[CH:17]=[C:16]([NH:25][CH:22]([CH3:24])[CH3:23])[N:15]=[C:14]([NH:19][CH2:20][CH3:21])[N:13]=2)(=[O:10])=[O:9])=[CH:4][CH:3]=1Participants
4
Procedure
0.5 g (0.0015 mol) of 4-amino-N-(6-chloro-2-ethylamino-pyrimidin-4-yl)-benzenesulfonamide was dissolved in 20 ml of ethanol and stirred with 13 ml (0.15 mol) of isopropylamine 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 10 ml of 0.1N 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 0.20 g (37%) of 4-amino-N-(2-ethylamino-6-iso-propylamino-pyrimidin-4-yl)-benzenesulfonamide as white crystals; m.p.: 258-259° C.