P III-Mediated Intramolecular Cyclopropanation and Synthesis of Cyclopropa[ c]coumarins
Yuhe Qiu, Kanghui Lu, Bangchi Wei, Zhenkai Qian, Zhengjie He
Chinese Journal of Organic Chemistry . 2021, (10): 4066 -4074 .  DOI: 10.6023/cjoc202104036