Intermolecular[2+2] Cycloaddition of in-situ Generated Allenylic Esters
Zhao Lifang, Tong Xiaojuan, Zhu Haitao, Yang Desuo, Fan Mingjin
Chin. J. Org. Chem. . 2017, (3): 646 -651 .  DOI: 10.6023/cjoc201609014