Palladium-catalyzed synthesis of aurone from salicyloyl chloride and phenylacetylene

Article abstract of DOI:10.1016/0022-328X(90)85336-W

Salicyloyl chloride has been found to react with phenylacetylene under the catalytic action of a palladium(O) complex with trioctylamine as ligand to give o-hydroxyphenyl phenylalkynyl ketone as the main product.The ketone undergoes selective cyclization to aurone in the presence of a palladium(O)-triphenylphosphine catalyst.