New stereoselective $$C_{sp^2 } - C_{sp^3 }$$ coupling: Catalytic iodomethylation of acetylene with methyl iodide into E-1-iodopropene
作者:S. A. Mitchenko、O. V. Khazipov、T. V. Krasnyakova
DOI:10.1134/s0023158414030094
日期:2014.5
The catalytic addition of methyl iodide to acetylene yielding E-1-iodopropene has been discovered. The reaction competes with the formation of E,E-1,4-diiodobuta-1,3-diene. The key intermediate in these reactions is the methylvinyl derivative of PtIV resulting from acetylene iodoplatination by the PtIV methyl complex forming in the equilibrium process. The \(C_sp^2 } - C_sp^3 }\) coupling product
已发现将甲基碘催化加成到乙炔中产生E -1-碘丙烯。该反应与E,E -1,4-二碘代丁-1,3-二烯的形成竞争。在这些反应中的关键中间体是铂的甲基乙烯基衍生物IV从由铂乙炔iodoplatination所得IV甲基络合物在平衡过程形成。的\(C_ SP ^ 2} - C_ SP ^ 3} \)在还原消除配体的偶联产物Ë -1- iodopropene。E,E -1,4-diiodobuta-1,3-diene是第二个乙炔分子被该中间体继之以乙烯基配体的\(C_ sp ^ 2}-C_ sp ^ 2} \)偶联。