D. Karmakar et al., MICROWAVE-ASSISTED RUPTURE OF FUROXANS TO NITRILE OXIDES AND INTERMOLECULAR CAPTURE BY DIPOLAROPHILES, Synthetic communications, 28(13), 1998, pp. 2415-2420
3,4-Diaroylfuroxans 1 react with various dipolarophiles 3 under microw
ave activation to afford the cycloadduct 4 instead of the expected iso
xazole 5 in good yields in the absence of solvent.