Sodium hydride → 6-Benzyl-2-chloro-4-(3-methoxypropoxy)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine

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Reaction Steps

To a solution of 3-methoxypropan-1-ol (0.500 mL, 5.23 mmol) in t-butanol (5 mL) was added a 60% dispersion of NaH in oil (70 mg, 1.75 mmol). The resulting suspension was permitted to stir for 30 minutes at which time the reaction was placed at 0° C. and charged with 6-benzyl-2,4-dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine (CAS#778574-06-4, 300 mg, 1.02 mmol) as a solution in THF (1.5 mL). After 20 minutes the mixture was quenched with saturated aqueous NH4Cl, and diluted with ethyl acetate and water. The layers were then separated and the organic layer was washed with brine and dried over Na2SO4, filtered and concentrated. The resulting residue was purified via silica gel flash chromatography to provide 6-benzyl-2-chloro-4-(3-methoxypropoxy)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine. MS (ESI+) m/z 348.1 (M+H)+.

Provenance & Evidence