Ammonium Hydroxide → 4-chloro-5-methyl-5,6-dihydropyrido[2,3-d]pyrimidin-7(8H)-one

Participants

Reaction Conditions

Reaction Steps

Add methyl 3-(4,6-dichloropyrimidin-5-yl)butanoate (24.00 g, 96.35 mmol) to 30% aqueous ammonium hydroxide (100.00 mL, 7.5 eq) in a sealed tube. Seal and stir the mixture at 60° C. overnight. Cool the mixture in an ice bath. Filter the solid and wash with cold water to give 4-chloro-5-methyl-5,6-dihydropyrido[2,3-d]pyrimidin-7(8H)-one (11.35 g, 60%). MS (ES) m/z=198 [M]+.

Provenance & Evidence