K 2S 2O 8-Initiated Cascade Cyclization of 2-Alkynylnitriles with Sodium Sulfinates: Access to Fused Cyclopenta[gh]phenanthridines
Chen Zhichao, Zhang Hong, Zhou Shufeng, Cui Xiuling
Chinese Journal of Organic Chemistry . 2020, (11): 3866 -3872 .  DOI: 10.6023/cjoc202007005