Triethylamine → HCID 67233834, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-bromo-4-hydroxy-thieno[2,3-c]pyridine-5-carboxylic acid butyl ester (example 43 a, 165 mg, 0.5 mmol), ethynyl-trimethyl-silane (87 μl, 0.6 mmol), dichlorobis(triphenylphosphine)palladium(II) (11 mg, 0.015 mmol), CuI (5 mg, 0.025 mmol), and triethylamine (1.5 ml) was heated in a microwave oven at 100° C. with stirring for 15 min. After cooling to ambient temperature water (20 ml) was added and the mixture was extracted with diethylether (1×30 ml). The organic phase was dried over MgSO4. Then silica gel was added and the mixture concentrated in vacuo. The residue was added on top of a short column filled with silica gel. Elution with ethyl acetate:hexanes=9:1 and in vacuo concentration gave the title compound as a dark oil (75 mg); MS-(+)-ion: MS-(+)-ion: M+1=348.4.

Provenance & Evidence