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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 44, 2014 - Issue 3
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Original Articles

Efficient Synthesis of 3-Aryl-5-chloroindan-1-ones via Free Radical–Mediated Intramolecular Cyclization

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Pages 417-423 | Received 17 May 2013, Published online: 20 Nov 2013
 

Abstract

An efficient free radical–mediated intramolecular cyclization strategy has been developed for the synthesis of 3-aryl-5-chloroindan-1-ones. Variously substituted 2,4-dichloroenones afforded 3-aryl-5-chloroindan-1-ones in quantitative yields upon intramolecular cyclization under free radical conditions.

GRAPHICAL ABSTRACT

ACKNOWLEDGMENTS

The authors are obliged to the Higher Education Commission, government of Pakistan, for generous support of a research project (HEC 20-809), fellowship to Aeysha Sultan (074-141-Ps4-435), and IRSIP award and financial assistance for ESI MS, LR EIMS, and NMR analyses. The authors are also grateful to the Department of Physics, University of Sargodha, for the single-crystal XRD facility.

Notes

a Equivalents to 4a.

b Drop-wise addition of n Bu3SnH to a refluxing solution of enone 4a and AIBN in PhH.

C Dropwise addition of enone 4a to vigorously refluxing solution of AIBN and n Bu3SnH in PhH.

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