Butyl Acetate → HCID 86679294, compound

Participants

Reaction Steps

Triisopropylsilylacetylene (9.0 mL) was added dropwise to a mixture of 4-bromofuran-2-carbaldehyde (2.0 g), PdCl2(PPh3)2 (0.40 g), CuI (0.22 g), TEA (7.9 mL) and AcOBu (20 mL) at 110 to 120° C. over the course of 6 hours in a nitrogen atmosphere, and then the mixture was stirred for 2 hours. After the reaction mixture was allowed to cool, ethyl acetate (50 mL), OH type silica gel (1.0 g), cellpure (1.2 g) and activated carbon (20 mg) were added. The insolubles were filtered out, and the filtrate was concentrated under reduced pressure. The resulting residue was purified by OH type silica gel column chromatography (gradient elution with hexane/ethyl acetate=100/0→65/35) to obtain 4-[(triisopropylsilanyl)ethynyl]furan-2-carbaldehyde (black oil) (2.3 g, 72%).

Provenance & Evidence