m-Chloroperbenzoic acid → N-(4-tert-Butylphenyl)-7-(3-chloropyridin-2-yl)-5,6,7,8-tetrahydro-2-methoxypyrido[3,4-d]pyrimidin-4-amine

Participants

Reaction Conditions

Reaction Steps

m-CPBA (148 mg, 0.6 mmol) was added to the solution of N-(4-tert-butylphenyl)-7-(3-chloropyridin-2-yl)-5,6,7,8-tetrahydro-2-(methylthio)pyrido[3,4-d]pyrimidin-4-amine from Example 28.C. (88 mg, 0.2 mmol) in ethanol (7 mL) and stirred at room temperature for 1 hr. Solid thus formed was filtered out and dried in vacuo (50 mg). This solid was suspended in methanol (5 mL) and sodium methoxide (9 mg, 0.165 mmol) was added and stirred at 60° C. overnight. Solvent was removed in vacuo and residue was dissolved in ethyl acetate, washed by water, sodium hydrosulfite aqueous solution, brine and dried over sodium sulfate. Purified by column to yield the product as a white solid (33 mg, 39%).

Provenance & Evidence