2-[4-(Aminomethyl)phenyl]benzonitrile → 7-[(2'-Cyanobiphenyl-4-yl)methylamino]-5-methylpyrazolo[1,5-a]pyrimidine

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Reaction Steps

3.35 g (20 mmol) 7-chloro-5-methylpyrazolo[1,5-a]pyrimidine (prepared according to Y. Makisumi, Chem. Pharm. Bull. 1962, 10, 620) and 4.17 g (20 mmol) 4-aminomethyl-2'-cyanobiphenyl were heated with reflux in 40 ml dry ethanol for 4 hours. The solvent was distilled off in vacuo, and the remaining oil solidified after stirring with a mixture of 20 ml hexane and 20 ml t-butylmethylether to give a reddish powder of the pure title compound, m.p. 221°-223° C.

Provenance & Evidence