Author/Authors :
Rabin Bera، نويسنده , , Nalivela Kumara Swamy، نويسنده , , G. Dhananjaya، نويسنده , , J. Moses Babu، نويسنده , , P. Rajender Kumar، نويسنده , , K. Mukkanti، نويسنده , , Manojit Pal، نويسنده ,
Abstract :
The first Pd/C-mediated Sonogashira coupling of β-chloroacroleins with terminal alkynes is described here. Pd/C–CuI–PPh3 was found to be an efficient catalyst system for this coupling reaction. Using this economic and general process a variety of 4-alkynyl-2H-chromene-3-carbaldehydes and 5-alkynyl-2,3-dihydro benzo[b]oxepine-4-carbaldehydes were prepared in good yields.
