Phosphine-containing motifs have been playing an indispensable role in synthetic chemistry,so it is quite important to develop novel approaches to these compounds.1-Alkynylphosphine derivatives are useful building blocks to new phosphines,however,mostly through nucleophilic additions and cycloadditions.1 Rh(III)-catalyzed direct functionalization of C-H bonds is a straightforward and efficient way to construct C-X bonds.2 Recently,a new strategy has been developed by employing an internal oxidizing directing group to synthesize highly functionalized products under external oxidant free conditions.