Synthesis and catalytic properties of W(OAr)2Cl2(CHCMe3)(OR2) and W(OAr)2Cl(CHCMe3)(CH2CMe3)(OR2)(Ar = 2,6-disubstituted phenyl; R = Et or Pri), new uni-component catalysts for metathesis of acyclic and cyclic olefins, with or without functional groups
The synthesis of W(OAr)2Cl(CHR)(CH2R1)(OR22)(Ar = 2,6-disubstitutedphenyl; R2= Et or Pri) illustrates one of the first examples of a well defined, Lewis acid free, homogeneous olefin metathesis catalyst, for which the activity and stereoselectivity can be governed by the nature of the aryloxide ligands and of the co-ordinated ether and which shows a wide range of potential applications.
W(OAr)2 Cl(CHR)(CH 2 R 1)(OR 2 2)(Ar = 2,6-二取代苯基; R 2 = Et或Pr i)的合成说明了孔的第一个例子定义为无路易斯酸的均相烯烃复分解催化剂,其活性和立体选择性可以由芳基氧化物配体和配位醚的性质决定,并显示出广泛的潜在应用。
Preparation of pheromone components by cometathesis reactions in the presence of MoCl5/SiO2-R4Sn CATALYST
作者:V. I. Bykov、T. A. Butenko、E. Sh. Finkel'shtein、P. V. Petrovskii、V. M. Vdovin