N,N-Dimethylaniline → HCID 479082, Verbindung

Reaktionsgleichung

CN(C)C1C=CC=CC=1.[NH2:10][C:11]1[N:16]=[C:15](O)[C:14]([CH2:18][C:19]2[CH:24]=[C:23]([O:25][CH3:26])[C:22]([C:27]([CH3:29])=[CH2:28])=[C:21]([O:30][CH3:31])[CH:20]=2)=[C:13]([NH2:32])[N:12]=1.P(Cl)(Cl)(Cl)=O>>[NH2:10][C:11]1[N:12]=[C:13]([NH2:32])[C:14]([CH2:18][C:19]2[CH:20]=[C:21]([O:30][CH3:31])[C:22]([C:27]([CH3:29])=[CH2:28])=[C:23]([O:25][CH3:26])[CH:24]=2)=[CH:15][N:16]=1

Komponenten

Edukt 3

HCID 949N,N-Dimethylaniline

HCID 24813Phosphorus oxychloride

HCID 178439675HCID 178439675, Verbindung

Produkt 1

HCID 479082HCID 479082, Verbindung

Versuchsvorschrift

0.65 G. of dimethylaniline was added dropwise while stirring to a suspension of 0.8 g. of 2,6-diamino-5-(3,5-dimethoxy-4-isopropenylbenzyl)-4-pyrimidinol in 6.5 g. of phosphorus oxychloride. The mixture was boiled for 4 hours while stirring and then about half of the phosphorus oxychloride was distilled under reduced pressure. About 10 g. of ice were added to the residue. The suspension was left to stand at room temperature for 2 days, adjusted to pH 10 with concentrated ammonia solution and the precipitate was filtered under suction 2 hours later. The precipitate was freed from dimethylaniline by steam distillation. After cooling the aqueous suspension, the resulting crude 2,6-diamino-4-chloro-5-(3,5-dimethoxy-4-isopropenylbenzyl)-pyrimidine was chromatographed on silica gel with benzene/methanol (9:1, v/v) and, after evaporation of the solvents, recrystallized from methanol. Yield: 0.27 g. (32%); melting point 199°-200° C.