Sodium Methoxide → 2-(4-Methoxyphenyl)pyrimidin-4-amine

Beteiligte Stoffe

Reaktionsschritte

The above intermediate 2-(4-methoxyphenyl)-4-pyrimideneamine was prepared as follows: A slurry containing 81 g of 4-methoxybenzamidine hydrochloride, 24 g of sodium methoxide and 200 ml of methanol was stirred for 15 minutes, filtered and the filtrate concentrated in vacuo on a steam bath. To the residue was added β-ethoxyacrylonitrile (same as ethoxymethyleneacetonitrile) and the solution was heated at 100°-115° C. for 2 and 1/2 hours and poured into water. The solid was collected, washed with water, air-dried, and crystallized from ether-n-hexane to yield 85 g of 2-(4-methoxyphenyl)-4-pyrimidinamine, m.p. 102°-104° C.

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