تفاعل #465473

معادلة التفاعل

N-(6-chloro-2-methylamino-pyrimidin-4-yl)-4-fluoro-benzenesulfonamide

methylamine hydrochloride

triethylamine

→

N-(2,6-bis-methylamino-pyrimidin-4-yl)-4-fluoro-benzenesulfonamide

المردود 43.8%

المذيبات

ethanol

ظروف التفاعل

المعالجة

1. 1
   أخرىthe residue was partitioned in ethyl acetate/water
2. 2
   ترشيحthe insoluble constituents were filtered off under suction
3. 3
   استخلاصextracted
4. 4
   استخلاصThe extract
5. 5
   أخرىrecrystallized from methanol/diethyl ether

الإجراء التجريبي

0.36 g (0.0011 mol) of N-(6-chloro-2-methylamino-pyrimidin-4-yl)-4-fluoro-benzenesulfonamide was dissolved in 10 ml of ethanol, treated with 1.2 g (0.018 mol) of methylamine hydrochloride and 4.0 ml (0.029 mol) of triethylamine and stirred in an autoclave at 140° C. for 17 hours. The mixture was freed completely from solvent, the residue was partitioned in ethyl acetate/water, the insoluble constituents were filtered off under suction and extracted. The extract and the solid were combined and recrystallized from methanol/diethyl ether. There was obtained 0.15 g (43%) of N-(2,6-bis-methylamino-pyrimidin-4-yl)-4-fluoro-benzenesulfonamide as white crystals; m.p. 261-263° C.

المصدر