1-Naphthols efficiently couple with internal alkynes via cleavage of the C–H bond at the peri- position in the presence of a catalyst system of [IrCl (cod)] 2/PBu t 3 to selectively afford the corresponding 8-vinyl-1-naphthol derivatives. N-(1-Naphthyl) benzenesulfonamides can similarly react with the alkynes. The reaction of salicylaldehyde with the alkynes using the catalyst system gives 2-hydroxyphenyl vinyl ketones via cleavage of the aldehyde C–H ...
