Dimethylamine → HCID 9800710, compound

Participants

Reaction Steps

A solution of 4-(3,5-dichloro-pyridin-4-ylmethyl)-7-methoxy-1,2-dihydro-phthalazine (1 g, 3.1 mmoles), prepared as described in example 22, in dry THF (35 ml), under stirring and dry N2 at room temperature, was added with 1,1′-carbonyldiimidazole (0.6 g, 3.72 mmoles), then the mixture was refluxed for 3 hours, cooled, added with 5.6M dimethylamine in ethanol (5 ml) and refluxed again. After 44 hours the mixture was cooled, poured into water/ice and extracted more times with CH2Cl2. The organic phases were washed with 5% NaOH, then with water, anhydrified and concentrated. The residue was flash chromatographed (eluent: hexane/ethyl acetate 1:1), then crystallised from acetonitrile (30 ml) to give 0.44 g of the title compound (yield: 36.4%). m.p.: 160-162GC.

Provenance & Evidence