4-苯基-1,2,4-三唑啉-3,5-二酮 、
1,2-dimethyl-1,3,5-cyclohexatriene 1,2-oxide 以
丙酮 为溶剂,
生成 (1R,7S,8R,10S)-8,10-dimethyl-4-phenyl-9-oxa-2,4,6-triazatetracyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione 、 (1S,7R,11S,12S)-7,9-dimethyl-4,15-diphenyl-8-oxa-2,4,6,13,15,17-hexazapentacyclo[9.6.0.02,6.07,12.013,17]heptadec-9-ene-3,5,14,16-tetrone