Triethylamine → HCID 178441809, compound

Participants

Reaction Steps

A solution of 5-butyl-N-(2,4-dimethoxybenzyl)-3-iodo-1H-pyrazolo[4,3-d]pyrimidin-7-amine (50 g, 107 mmol), 6-chloro-1-hexyne (18.71 g, 160 mmol), triethylamine (22.37 mL, 160 mmol), bis(triphenylphosphine)palladium(II)dichloride (5.63 g, 8.02 mmol) and copper(I) iodide (3.04 g, 15.94 mmol) in N,N-Dimethylformamide (1000 mL) under nitrogen was heated to 70° C. for 4 hours. The cooled solution was evaporated and the residue was purified by chromatography on a 1.5 kg silica cartridge eluted with 20-80% cyclohexane—EtOAc during 12 column volumes. Appropriate fractions were evaporated to give the title compound as a yellow foam (25.5 g).

Provenance & Evidence