Commercially available palladium salts as practical and green single-component catalysts in the coordination polymerization of 1-chloro-2-phenylacetylenes in air

Commercially available palladium salts ( 1-4 ) ( 1 : PdCl 2 ; 2 : PdCl 2 (CH 3 CN) 2 ; 3 : PdCl 2 (C 6 H 5 CN) 2 ; and 4 : Pd(OAc) 2 ) served as low-cost, stable, green, broad-spectrum, and single-component catalysts with low sensitivity toward functional groups and solvents during the coordination polymerization of various 1-chloro-2-phenylacetylenes, Cl-C&z.tbd;C-C 6 H 4 R ( a-j ), in air without a co-catalyst, providing a new metal catalyst design concept for the coordination polymerization of disubstituted alkynes. Commercially available Pd salts serve as single-component catalysts for coordination polymerization of 1-chloro-2-phenylacetylenes, which affords a new design concept of metal catalysts for coordination polymerization of disubstituted alkynes.