作者:Mohamad Soueidan、Jacqueline Collin、Richard Gil
DOI:10.1016/j.tetlet.2006.05.169
日期:2006.7
Samarium diiodide is an efficient precatalyst for the Friedel–Crafts reaction involving various aromatic substrates and chelating electrophiles. Alkyl 3,3,3-trifluoropyruvates are transformed into α-hydroxyesters in good yields with total regioselectivity. In reactions involving an ethyl glyoxylate or a glyoxylic imine, α-hydroxyesters or α-aminoesters are obtained with variable amounts of products
io二碘化物是弗瑞德-克来福特反应的有效预催化剂,涉及各种芳香族底物和螯合亲电试剂。3,3,3-三氟丙酮酸烷基酯以高收率和总区域选择性转化为α-羟基酯。在涉及乙醛酸乙酯或乙醛酸亚胺的反应中,通过两次Friedel-Crafts反应得到的α-羟基酯或α-氨基酯的产物量可变。