Copolymerization of carbon monoxide and norbornene derivatives with ester groups by palladium catalyst

Ring‐opening metathesis polymerization of fatty acid derived monomers

“…low PDIs of 1.06–1.25; see also Discussion section later). These results were in contrast to those already reported in the literature where broad polydispersities of typically 1.9, 2.1, and 2.2 were observed for polymers derived from M2 , M3 , and M4 , respectively 16, 17. It was concluded that the polymerizability of the monomers largely depended on the bulkiness of the substituent and the applied solvents.…”

“…The authors attributed this to the functional group tolerance of the 1 st generation Grubbs catalyst. The synthesis of copolymers of norbornene derivatives with an ester group and CO, using cationic Pd compounds as a catalyst via vinyl addition polymerization was also reported 17. The number average molecular weights ( M n ) of the synthesized polymers ranged from 3800 to 5300, and the glass transition temperature ( T g ) varied from −32 to 117 °C, revealing that the presence of linear long side chains decreased the T g value of the norbornene copolymers.…”

Polyketones as alternating copolymers of carbon monoxide

“…Alternating copolymers of carbon monoxide with norbornene derivatives containing ester groups RC(O)O with different lengths of the hydrocarbon chain (acetate, pentanoate, octanoate, decanoate, dodecanoate) have been synthesised. 109 The reaction was carried out at 60 8C and at a carbon monoxide pressure of 3.4 MPa for 24 h in a MeNO 2 ± MeOH (5 : 1) mixture in the presence of the [(bipy)Pd(MeCN) 2 )](BF 4 ) 2 catalyst. Table 2 presents some properties of the resulting copolymers.…”

Ring-opening polymerization of cyclohexene oxide by a novel dicationic palladium catalyst

“…Pd (1) 138.1(9) C(4)-C (5) 137.3(11) C(5)-C (6) 138.2(12) C(6)-C (7) 136.3(10) C(8)-C (9) 145.5(10) F(1)-F (7) 106(4) F(1)-F (6) 121(4) F(4)-F (6) 125(4) F(4)-F(6)#2 125(4) F(5)-F(7)#2 131(4) F(5)-F (7) 131(4) F(8)-F (15) 102 (4) 582 Y. Zhang et al 119(5) F(9)-F (16) 119(5) F(10)-F (17) 113(4) F(10)-F (12) 128(2) F(10)-F (15) 135(6) F(10)-F (16) 178(4) F(11)-F (17) 112(4) F(11)-F (13) 127(2) F(11)-F (16) 133(4) F(11)-F (15) 170 (6) 89.1(18) F(11)-P(2)-F (12) 130.2(10) F(11)#1-P(2)-F (12) 130.2(10) F(16)-P(2)-F (12) 89.1(17) F(16)#1-P(2)-F (12) 89.1(17) F(9)-P(2)-F (12) 78.4(14) F(13)-P(2)-F (12) 172.8(12) F(8)-P(2)-F (12) 102.8(12) C(7)-N(1)-C (3) 119.3(5) C(7)-N(1)-Pd (1) 122.0(4) C(3)-N(1)-Pd (1) 118.7(4) Symmetry transformations used to generate equivalent atoms: #1 x, −y, z; #2, x, −y − 1, z. The anisotropic displacement factor exponent takes the form: −2π 2 ((ha * ) 2 U 11 + · · · + 2hka * b * U 12 ).…”