PPh 3-Mediated Synthesis of 3-Hydroxy-2-oxindoles from o-Alkynylnitrobenzenes
Xuechun Zhao, Hui Fan, Yao Xu, Xiaoming Liao, Xiaoxiang Zhang
Chinese Journal of Organic Chemistry . 2023, (11): 3997 -4002 .  DOI: 10.6023/cjoc202304017