Synthesis of Linear (<i>Z</i>
)-α,β-Unsaturated Esters by Catalytic Cross-Metathesis. The Influence of Acetonitrile
作者:Elsie C. Yu、Brett M. Johnson、Erik M. Townsend、Richard R. Schrock、Amir H. Hoveyda
DOI:10.1002/anie.201608087
日期:2016.10.10
Kinetically controlled catalytic cross‐metathesis reactions that generate (Z)‐α,β‐unsaturated esters selectively are disclosed. A key finding is that the presence of acetonitrile obviates the need for using excess amounts of a more valuable terminal alkene substrates. On the basis of X‐ray structure and spectroscopic investigations a rationale for the positive impact of acetonitrile is provided. Transformations