Water → [1-(1,4-dimethyl-1H-indol-3-ylmethyl)-2,4-dioxo-1,4-dihydro-2H-pyrido[3,4-d]pyrimidin-3-yl]-acetic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of 62 mg of (2,4-dioxo-1,4-dihydro-2H-pyrido[3,4-d]pyrimidin-3-yl)-acetic acid methyl ester in N,N-dimethylformamide (2.5 mL) is added 109 mg of (1,4-dimethyl-1H-indol-3-ylmethyl)-trimethylammonium iodide and 44 mg of potassium carbonate at room temperature. The solution is heated to 60° C. for 2.5 h. Then the reaction is cooled to room temperature and stirred for another 16 hrs. Then 50 mL of water is added and a pale yellow solid is formed. The solid is collected and rinsed with water. Purification of this solid by flash chromatography on silica gel gives 98 mg (95%) of [1-(1,4-dimethyl-1H-indol-3-ylmethyl)-2,4-dioxo-1,4-dihydro-2H-pyrido[3,4-d]pyrimidin-3-yl]-acetic acid methyl ester.

Provenance & Evidence