Palladium-catalyzed alternating copolymerization of carbon monoxide with olefins bearing carbamate and amide functionalities

摘要

The copolymerization of carbon monoxide with different olefins bearing carbamate and amide functionalities was effected using (Pd(CH_3CN)_4)(BF_4)_2 as the catalyst and (R,R)-Me-DUPHOS (2:1(v/v)MeNO_2-MeOH or CH_2Cl_2 as the solvent). The products constitute a new class of functionalized copolymers, and were found to be optically active with a mixture of 1,4-ketone and spiroketal repeating units in the backbone. The influence of different parameters on the copolymerization of methyl N-(3-butenyl) carbamate with carbon monoxide was examined.