Cite this paper:Chin. J. Chem. 2023 , 41 , XXX—XXX. DOI:
10.1002/cjoc.202300XXX
Cobalt-Catalyzed Switchable [4 + 1] and [4 + 1 + 1]
Spirocyclization of Aromatic Amides with
2-Diazo-1H -indene-1,3(2H )-dione: Access to Spiro
Indene-2,1’-isoindolinones and Spiro Isochroman-3,1’-isoindolinones
Bin Li*, Mengmeng Xie, Jingyu Li, Nana Shen, Xinying Zhang, and Xuesen
Fan*
Pingyuan Laboratory, Key Laboratory of Green Chemical Media and
Reactions, Key Laboratory for Yellow River and Huai River Water
Environmental Pollution Control, Ministry of Education, School of
Environment, School of Chemistry and Chemical Engineering, Henan Normal
University, Xinxiang, Henan 453007, P. R. China.