Issue 7, 2017

Copper-promoted [2+2+2] annulation of 1,n-enynes through decomposition of azobis(alkyl nitrile)s

Abstract

A novel copper-promoted [2+2+2] annulation of 1,n-enynes with azobis(alkyl nitrile)s and H2O for the synthesis of diverse 7,8-dihydrophenanthridine-6,9(5H,6aH)-diones and fluorene is described. The reaction proceeds via the decomposition of azobis(alkyl nitrile)s into the cyanoalkyl radicals as the two-carbon units and offers a new efficient tool for the one-step formation of four new chemical bonds.

Graphical abstract: Copper-promoted [2+2+2] annulation of 1,n-enynes through decomposition of azobis(alkyl nitrile)s

Supplementary files

Article information

Article type
Communication
Submitted
13 Nov 2016
Accepted
22 Dec 2016
First published
23 Dec 2016

Chem. Commun., 2017,53, 1265-1268

Copper-promoted [2+2+2] annulation of 1,n-enynes through decomposition of azobis(alkyl nitrile)s

B. Liu, C. Wang, M. Hu, R. Song, F. Chen and J. Li, Chem. Commun., 2017, 53, 1265 DOI: 10.1039/C6CC09063J

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