Triethylamine → 5-(4-phenyl-3,6-dihydro-2H-pyridin-1-ylmethyl)-pyrimidine-2,4-diamine

Participants

Reaction Steps

A solution of 1.0 g (0.0051 mol) of 4-phenyl-1,2,3,6-tetrahydro-pyridine hydrochloride in 40 ml of dimethylformamide was treated with 2.13 ml (0.0153 mol) of triethylamine and 0.62 g (0.00170 mol) of 5-bromomethyl-pyrimidine-2,4-diamine dihydrobromide and the mixture was stirred at room temperature under argon for 65 hours. The mixture was completely freed from the solvents. The residue was chromatographed over silica with methanol as the eluent, digested in dichloromethane/water 1:1 and subsequently filtered off under suction. The organic phase was then completely freed from the solvents and the residue was digested in diethyl ether and subsequently filtered off under suction. A total of 0.27 g (56%) of 5-(4-phenyl-3,6-dihydro-2H-pyridin-1-ylmethyl)-pyrimidine-2,4-diamine was obtained as white crystals; m.p. 239°-241°.

Provenance & Evidence