Facile One-Pot Synthesis of Di- and Tri-Substituted Furans From Acyl Isocyanates Using Trimethylsilyldiazomethane
作者:Toyohiko Aoyama、Yoshiyuki Hari、Tomoe Iguchi
DOI:10.1055/s-2004-822397
日期:——
The Diels-Alder reaction of 2-substituted 4-(trimethyl-silyloxy)oxazoles, which were prepared in situ from trimethylsilyldiazomethane and acylisocyanates, with dimethyl acetylenedicarboxylate or ethyl propiolate gave furan-3,4-dicarboxylic or furan-3-carboxylic esters in good yields.