Benzyl Bromide → HCID 59553892, compound

Participants

Reaction Steps

5-Chloro-2-(2-methoxy-phenyl)-3-phenethyl-3H-pyrido[4,3-d]pyrimidin-4-one was subjected to the same deprotection conditions found in the final step of Example 1 to provide the desired 5-chloro-2-(2-hydroxy-phenyl)-3-phenethyl-3H-pyrido[4,3-d]pyrimidin-4-one. A mixture of 5-chloro-2-(2-hydroxy-phenyl)-3-phenethyl-3H-pyrido[4,3-d]pyrimidin-4-one (88 mg, 0.233 mmol), potassium carbonate (64 mg, 0.466 mmol, 2 equiv.) and benzyl bromide (0.029 mL, 0.245 mmol, 1.05 equiv.) in 2 mL of acetone was heated to reflux overnight. The reaction mixture was cooled to RT, filtered through celite, concentrated and the residue purified on preparative TLC plate using 1:1 ethyl acetate:heptane to give 95 mg (87%) of the desired product.

Provenance & Evidence