Phenylacetylene → HCID 90390415, compound

Participants

Reaction Steps

To a solution of 3-[(Z)-{[(2-bromo-1,3-thiazol-4-yl)methoxy]imino}(phenyl)methyl]-2-methyl-1,2,4-oxadiazol-5(2H)-one (210 mg, 0.514 mmol, 1 eq) in degased THF (2 mL) was added in a microwave tube under argon tetrakis(triphenylphosphine)palladium (0) (59.4 mg, 0.051 mmol, 0.1 eq), copper iodide (14.6 mg, 0.077 mmol, 0.15 eq) N,N-diisopropylethylamine (0.358 ml, 2.06 mmol, 4 eq) and phenylacetylene (157 mg, 1.54 mmol, 3 eq). The mixture was stirred at room temperature for 2 days. The mixture was concentrated, diluted with ethyl acetate and filtered over a celite cartridge. The solvent was evaporated and the residue was purified by chromatography on silica gel to afford 3-[(Z)-({[2-(cyclopropylethynyl)-1,3-thiazol-4-yl]methoxy}imino)(phenyl)methyl]-2-methyl-1,2,4-oxadiazol-5(2H)-one (148 mg, 73% yield).

Provenance & Evidence