[3+2] Cycloaddition of Methylenedihydrobenzofurandiones and Nitrilimines: Synthesis of Sipropyrazole Compounds
Shi Wangyu, Xu Jiaqing, Mao Biming, Jia Hao, Huang Jiaxing, Guo Hongchao
Chinese Journal of Organic Chemistry . 2020, (3): 756 -762 .  DOI: 10.6023/cjoc201907030