Reaction of Huisgen Zwitterion with 1,2-Benzoquinones and Isatins: Expeditious Synthesis of Dihydro-1,2,3-benzoxadiazoles and Spirooxadiazolines
作者:Vijay Nair、A. T. Biju、A. U. Vinod、Eringathodi Suresh
DOI:10.1021/ol051956n
日期:2005.11.1
The zwitterionic intermediate generated from dialkyl azodicarboxylate and triphenylphosphine on reaction with 3-methoxy-1,2-benzoquinones afforded dihydro-1,2,3-benzoxadiazoles. N-Substituted isatins furnished spirooxadiazolines under similar conditions.