Palladium diacetate (Pd(OAc)2), in the presence of acetic acid, is found to exhibit excellent catalytic activity for the double hydroselenation of terminal alkynes with benzeneselenol to yield the corresponding diselenoketals regioselectively.
Highly regioselective hydroselenation and double-bond isomerization of terminal alkynes with benzeneselenol catalyzed by bis(triphenylphosphine)palladium(II) dichloride
Bis(triphenylphosphine)palladium(II) dichloride (PdCl2(PPh3)2) catalyzesregioselective addition of benzeneselenol to terminal alkynes and the subsequent double-bond isomerization to afford the corresponding internal alkenyl selenides in good yields.