S-Shaped Helical Singlet Diradicaloid and Its Transformation to Circumchrysene via a Two-Stage Cyclization

Jinlian Hu, Qin Xiang, Xiaoqi Tian, Lei Ye, Yanpei Wang, Yong Ni, Xing Chen, Yuxia Liu, Guang Chen*, and Zhe Sun*

J. Am. Chem. Soc. 2024, 146, 15, 10321–10330

https://doi.org/10.1021/jacs.3c11585