Sodium hydride → 5-Cyclopentyloxy-1-(3,5-dichloropyridin-4-ylmethyl)-6-methoxy-phthalazine

関与物質

反応手順

A solution of 3,5-dichloro-4-methyl-pyridine (13.86 g, 85.56 mmoles) in dry dimethylformamide (100 ml) was added, under nitrogen and stirring, with 55% NaH (3.73 g, 85.56 mmoles). The mixture was stirred for 1 hour then added with a solution of 5-cyclopentyloxy-1-chloro-6-methoxy-2H-phthalazine (7.95 g, 28.52 mmoles), obtained as described in example 7, in dry dimethylfomamide (70 ml). The mixture was left to stand for one night, quenched with water, diluted with water and extracted methyl aceate. The extract was washed with water and anhydrified over Na2SO4, then evaporated to dryness. The residue was flash chromatographed (eluent:petrolatum/ethyl acetate 1:1) to give 6.58 g of the title product (yield: 57%).

情報源と証拠