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Issue 5, 2016
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Ascorbic acid promoted [4 + 2] benzannulation: a mild, operationally simple approach to the synthesis of phenanthrenes

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Abstract

A mild, simple and metal-free radical [4 + 2] benzannulation for the generation of phenanthrenes has been developed. A substoichiometric reductant, ascorbic acid (vitamin C), is harnessed as the radical initiator. This method has a broad substrate scope, and various substituted phenanthrenes were obtained in moderate to good yields at room temperature without irradiation.

Graphical abstract: Ascorbic acid promoted [4 + 2] benzannulation: a mild, operationally simple approach to the synthesis of phenanthrenes

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Publication details

The article was received on 15 Jan 2016, accepted on 19 Mar 2016 and first published on 21 Mar 2016


Article type: Research Article
DOI: 10.1039/C6QO00020G
Org. Chem. Front., 2016,3, 630-634

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    Ascorbic acid promoted [4 + 2] benzannulation: a mild, operationally simple approach to the synthesis of phenanthrenes

    M. Bu, G. Lu and C. Cai, Org. Chem. Front., 2016, 3, 630
    DOI: 10.1039/C6QO00020G

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