Catalytic Ester Metathesis Reaction and Its Application to Transfer Hydrogenation of Esters
作者:Abhishek Dubey、Eugene Khaskin
DOI:10.1021/acscatal.6b00827
日期:2016.6.3
unsymmetrical ester such as ethyl hexanoate can be transformed to a mixture of starting material, hexyl ethanoate, ethyl acetate, and hexyl hexanoate in equal proportions, as expected from a classical metathesis reaction with 0.2 mol % catalyst. A 20× excess of low boiling alcohol, such as ethanol, allows for the transfer of an acyl moiety to the sacrificial low boiling ethyl acetate product, while significantly
我们报告了Ru络合物催化的酯复分解反应,其中不对称酯(如己酸乙酯)可以按等比例转化为起始原料,乙醇酸己酯,乙酸乙酯和己酸己酯的混合物,这是经典复分解反应所期望的。 0.2mol%的催化剂。20倍过量的低沸点醇(例如乙醇)可将酰基部分转移到牺牲性低沸点乙酸乙酯产品上,同时显着增加官能团的耐受性和底物范围;醇的收率可以达到90%,这是目前高H 2的诱人替代品钌基酯还原化学的高压氢化方案。先前在Ru催化的酯官能团的转化领域中尚未报道这两个反应。