反应详情

A solution of 4-chloro-1-(3,5-dichloro-pyridin-4-ylmethyl)-6-methoxy-phthalazine (0.52 g, 1.5 mmoles), prepared as described in example 45, in dry DMF (10 ml) under N2 was added with piperidine (1 ml, 10 mmoles), phenylacetylene (0.15 g, 1.5 mmoles), PdCl2 (0.013 g, 0.075 mmole), triphenylphosphine (0.039 g, 0.15 mmole) and CuI (0.014 g, 0.075 mmole). The mixture was stirred for 20 hours, poured into saturated NHCl (10 volumes) and extracted twice with CH2Cl2, then washed with 5% HCl, anhydrified and concentrated to give a solid which was flash chromatographed (eluent: CH2Cl2/ethyl ether 9:1). The resultant solid was triturated in ethyl ether to give 0.41 g of the title compound (yield: 52%). m.p.: 213.4-214.4° C. (dec.).

1. additionpoured into saturated NHCl (10 volumes)
2. extractionextracted twice with CH2Cl2
3. washwashed with 5% HCl, anhydrified
4. concentrationconcentrated
5. customto give a solid which
6. customchromatographed (eluent: CH2Cl2/ethyl ether 9:1)
7. customThe resultant solid was triturated in ethyl ether