Triethylamine → HCID 69114931, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 4-[2-aminomethyl-3-(4-fluoro-benzylamino)-phenyl]-piperazine-1-carboxylic acid tert-butyl ester (255 mg, 0.62 mmol) in CH2Cl2 (6 ml) was cooled to 0° C. and NEt3 (0.19) ml, 1.36 mmol) and triphosgen (64 mg, 0.22 mmol) were added. After stirring at 0° C. for half an hour, the reaction mixture was allowed to warm up to room temperature and was partitioned between water and ethyl acetate. The organic layer was washed with water and brine. After drying over MgSO4, the organic fraction was concentrated in vacuo and resulting brown residue was purified by flash chromatography to give 4-[1-(4-fluoro-benzyl)-2-oxo-1,2,3,4-tetrahydro-quinazolin-5-yl]-piperazine-1-carboxylic acid tert-butyl ester as a yellow solid. (179 mg, 66%).

Provenance & Evidence