A simple and convenient protocol for the synthesis of α-diazo carbonyl compounds from the condensation of ethyldiazoacetate to aldehydes in water was developed using pyrrolidine as a catalyst.
Synthesis of α-diazo-β-hydroxy esters using nanocrystalline MgO
作者:M. Lakshmi Kantam、L. Chakrapani、T. Ramani
DOI:10.1016/j.tetlet.2007.06.141
日期:2007.8
Nanocrystalline magnesium oxide (NAP-MgO) has been found to be an effective heterogeneous, solid base catalyst for the direct aldol type reaction of ethyl diazoacetate and various aldehydes to afford the corresponding alpha-diazo-beta-hydroxy esters in excellent yields with high selectivity under mild conditions. (c) 2007 Published by Elsevier Ltd.