Issue 88, 2018

Metal-free cycloisomerizations of o-alkynylbiaryls

Abstract

We describe a novel and highly efficient metal-free strategy to construct 9,9-disubstituted fluorenes and phenanthrenes via the TfOH-catalyzed cycloisomerizations of o-alkynylbiaryls. Notably, the significant effects of the electronic properties and steric hindrance of the alkyne terminus on the reaction selectivity have been observed.

Graphical abstract: Metal-free cycloisomerizations of o-alkynylbiaryls

Supplementary files

Article information

Article type
Communication
Submitted
07 Jul 2018
Accepted
11 Oct 2018
First published
11 Oct 2018

Chem. Commun., 2018,54, 12455-12458

Metal-free cycloisomerizations of o-alkynylbiaryls

J. Zhang, S. Li, Y. Qiao, C. Peng, X. Wang and J. Chang, Chem. Commun., 2018, 54, 12455 DOI: 10.1039/C8CC05484C

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