Sodium Methoxide → 2-(4-Methoxyphenyl)pyrimidin-4-amine
Reaktionsgleichung
Cl.[CH3:2][O:3][C:4]1[CH:12]=[CH:11][C:7]([C:8]([NH2:10])=[NH:9])=[CH:6][CH:5]=1.C[O-].[Na+]>CO>[CH3:2][O:3][C:4]1[CH:12]=[CH:11][C:7]([C:8]2[N:10]=[C:8]([NH2:9])[CH:7]=[CH:6][N:9]=2)=[CH:6][CH:5]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
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.