Synthesis of Methylidene Complexes that Contain a 2,6-Dimesitylphenylimido Ligand and Ethenolysis of 2,3-Dicarbomethoxynorbornadiene
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https://figshare.com/articles/dataset/Synthesis_of_Methylidene_Complexes_that_Contain_a_2_6_Dimesitylphenylimido_Ligand_and_Ethenolysis_of_2_3_Dicarbomethoxynorbornadiene/2367142
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资源简介：
Monoalkoxide
pyrrolide (MAP) complexes that contain a 2,6-dimesitylphenylimido
(NAr*) ligand react with ethylene
to yield unsubstituted metallacyclobutanes that are in equilibrium
with methylidene complexes, W(NAr*)(CH2)(Me2Pyr)(OR) (R = t-Bu, OCMe(CF3)2, SiPh3, or 2,6-Me2C6H3). Polymerization of 2,3-dicarbomethoxynorbornadiene (DCMNBD) with
MCHCMe2Ph (M = Mo or W) initiators is slow as a
consequence of a slow propagation step. However, W(NAr*)(CH2)(Me2Pyr)(OR) (R = SiPh3 or 2,6-dimethylphenyl)
complexes react readily with 1 equiv of DCMNBD to give a monoinsertion
product. The facile reaction between the monoinsertion product and
ethylene then allows these complexes to be catalyts for the ring-opening
cross-metathesis (ethenolysis) of DCMNBD and DCMNBE (2,3-dicarbomethoxynorbornene)
with minimal formation of polymer.
创建时间：
2016-02-18
