Cationic Polymerization and Insertion Chemistry in the Reactions of Vinyl Ethers with (α-Diimine)PdMe<sup>+</sup> Species
作者:Changle Chen、Shuji Luo、Richard F. Jordan
DOI:10.1021/ja100491y
日期:2010.4.14
The reactions of (alpha-diimine)PdMe(+) species (1, alpha-diimine = (2,6-(i)Pr(2)-C(6)H(3))N=CMeCMe=N(2,6-(i)Pr(2)-C(6)H(3))) with vinyl ethers CH(2)=CHOR (2a-g: R = (t)Bu (a), Et (b), SiMe(3) (c), SiMe(2)Ph (d), SiMePh(2) (e), SiPh(3) (f), Ph (g); 2a-g: R = (t)Bu (a), Et (b), SiMe(3) (c), SiMe(2)Ph (d), SiMePh(2) (e), SiPh(3) (f), Ph (g)) were investigated. Two pathways were observed. First, 1 initiates
(α-二亚胺)PdMe(+) 物种的反应 (1, α-二亚胺 = (2,6-(i)Pr(2)-C(6)H(3))N=CMeCMe=N(2, 6-(i)Pr(2)-C(6)H(3))) 与乙烯基醚 CH(2)=CHOR (2a-g: R = (t)Bu (a), Et (b), SiMe (3) (c), SiMe(2)Ph (d), SiMePh(2) (e), SiPh(3) (f), Ph (g); 2a-g: R = (t)Bu (a) , Et (b), SiMe(3) (c), SiMe(2)Ph (d), SiMePh(2) (e), SiPh(3) (f), Ph (g)) 进行了研究。观察到两种途径。首先,1 引发 2a-c 的阳离子聚合,同时 1 分解为 Pd(0)。该反应通过形成 (α-二亚胺)PdR'(CH(2)=CHOR)(+) pi 复合物(R' = Me 或 CH(2)CHMeOR