Remarkable Ligand Effect in Ni- and Pd-Catalyzed Bisthiolation and Bisselenation of Terminal Alkynes: Solving the Problem of Stereoselective Dialkyldichalcogenide Addition to the CC Bond
作者:Valentine P. Ananikov、Konstantin A. Gayduk、Irina P. Beletskaya、Victor N. Khrustalev、Mikhail Yu. Antipin
DOI:10.1002/chem.200701278
日期:2008.3.7
We have developed two new catalytic systems based on Ni and Pd complexes to solve the challenging problem of dialkyldichalcogenide (Alk2E2; E=S, Se) addition to alkynes. A comparative study of two catalytic systems-Ni/PMe2Ph and Pd/PCy2Ph-has revealed that the Ni catalyst is superior with respect to high catalytic activity and more general scope relative to the Pd system. A novel synthetic methodology
我们已经开发了两个基于Ni和Pd配合物的新催化系统,以解决二炔二卤化物(Alk2E2; E = S,Se)加成炔烃这一具有挑战性的问题。对两种催化剂体系Ni / PMe2Ph和Pd / PCy2Ph的比较研究表明,Ni催化剂在高催化活性方面优于Pd体系,具有更广泛的适用范围。开发了一种新颖的合成方法,用于从末端炔烃中以优异的立体选择性和高收率制备(Z)-双(烷硫基)烯烃和(Z)-双(烷基硒基)烯烃。