Erlenmeyer azlactone synthesis with aliphatic aldehydes under solvent-free microwave conditions
作者:Sosale Chandrasekhar、Phaneendrasai Karri
DOI:10.1016/j.tetlet.2006.11.174
日期:2007.1
2-Phenyl-5(4H)-oxazolone (azlactone) reacts with aliphatic aldehydes upon adsorption on neutral alumina and irradiation with microwaves (<2 min). The corresponding condensation products are obtained in good yields (62–78%), indicating the satisfactory resolution of a long-standing problem plaguing the classical Erlenmeyersynthesis (poor results with aliphatic aldehydes). Plausible mechanistic reasons