Ammonia → 4-[4-(6-Methoxy-pyridin-3-ylmethylamino)-7H-pyrrolo[2,3-d]pyrimidin-6-yl]-benzoic acid ethyl ester

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Reaction Steps

A mixture of 5.0 g (16.6 mMol) 4-(4-chloro-7H-pyrrolo[2,3-d]pyrimidin-6-yl)benzoic acid ethyl ester (WO 97/02266) and 2.52 g (18 mMol) of 6-methoxy-pyridin-3-ylmethylamine (CAS: 262295-96-5; prepared from 6-methoxy-nicotin-nitrile by hydrogenation in the presence of Raney-Nickel in methanol containing NH3) in 3.5 ml (25 mMol) of Et3N and 100 ml n-butanol is heated for 8 h to 140° C. Then additional 0.69 g of 6-methoxy-pyridin-3-ylmethylamine and 1.2 ml of Et3N are added. Heating is continued for 6 h and the hot suspension filtrated and the residue washed with n-butanol and hexane to give the title compound; m.p. 305° C.; elemental analysis for C, H, and N, within 0.5% of calculated value.

Provenance & Evidence