One-Pot Synthesis of Imidazole-4-Carboxylates by Microwave-Assisted 1,5-Electrocyclization of Azavinyl Azomethine Ylides
作者:Lisa Preti、Orazio A. Attanasi、Emilia Caselli、Gianfranco Favi、Claudia Ori、Paolo Davoli、Fulvia Felluga、Fabio Prati
DOI:10.1002/ejoc.201000434
日期:2010.8
Diversely functionalized imidazole-4-carboxylates were synthesized by microwave-assisted 1,5-eletrocyclization of 1,2-diaza-1,3-diene-derived azavinyl azomethine ylides. 1,2-Diaza-1,3-dienes were treated with primary aliphatic or aromatic amines and subjected to microwave irradiation in the presence of aldehydes. 3-Alkyl- and 3-arylimidazole-4-carboxylates were prepared in good yields through a one-pot