Unusual Anion Effects in the Iron‐Catalyzed Formation of 3‐Hydroxyacrylates from Aromatic Aldehydes and Ethyl Diazoacetate
作者:Luis Gonçalo Alves、Georg Dazinger、Luis F. Veiros、Karl Kirchner
DOI:10.1002/ejic.201000240
日期:2010.7
Due to the lability of one of the CO ligands in trans-[Fe(PNP)-(CO) 2 CI] + this compound is an efficient catalyst for the coupling of a series of aromatic aldehydes with ethyl diazoacetate (EDA), which give, in most cases, selectively 3-hydroxyacrylates rather than β-oxo esters. This reaction is strongly dependent on the nature of the counterion. Whereas with BF 4 - the reaction proceeds with conversions