1-(1,3-Benzothiazol-2-yl)propan-2-one → 5-(1,3-Benzothiazol-2-yl)-4-(4-cyano-2-methoxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3-carbonitrile

Participants

Reaction Steps

150 mg (0.931 mmol) of the compound from example 3A, 178 mg (0.931 mmol) of 1-(1,3-benzo-thiazol-2-yl)acetone [Costa et al., J. Heterocycl. Chem. 28, 1541-1544 (1991)] and 76 mg (0.931 mmol) of 3-aminocrotononitrile are dissolved in 6 ml of isopropanol and stirred at the reflux temperature overnight. After cooling to room temperature, the volatile components are removed in a rotary evaporator. The crude product obtained in this way is recrystallized from acetonitrile. 40 mg (11% of theory) of the title compound are obtained.

Provenance & Evidence