A highly regio- And stereoselective synthesis of (Z)-3-arylidene-2,3-dihydro-5H-1,4-benzodioxepin-5-ones and (Z)-3-arylidene1,2,3,5-tetrahydro-4,1-benzoxazepin-5-ones through palladium-copper catalysis

Article abstract of DOI:10.1039/a908682j

Sodium 2-(prop-2′-ynyloxy)benzoate 1a reacted with the aryl iodides 2-10 in the presence of bis(triphenylphosphine)palladium(II) chloride, cuprous iodide and triethylamine in CH₃CN-DMF to yield the disubstituted alkynes 11-19 in good yields (48