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Synthesis of sulfonated naphthols via C–H bond functionalization with the insertion of sulfur dioxide

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Abstract

A three-component reaction of naphthols, sulfur dioxide, and aryldiazonium tetrafluoroborates catalyzed by iron(III) chloride through a radical process via direct C–H functionalization is developed, leading to diverse sulfonated naphthols in good yields. Arylsulfonyl radicals act as the key intermediates during the reaction process, and the presence of iron(III) chloride facilitates the formation of a naphthol radical in the reaction through a single electron transfer. Several sensitive functional groups including nitro, halo, cyano, hydroxy, and ester are all compatible under the conditions.

Graphical abstract: Synthesis of sulfonated naphthols via C–H bond functionalization with the insertion of sulfur dioxide

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Publication details

The article was received on 08 Sep 2017, accepted on 11 Oct 2017 and first published on 12 Oct 2017


Article type: Research Article
DOI: 10.1039/C7QO00811B
Citation: Org. Chem. Front., 2018, Advance Article
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    Synthesis of sulfonated naphthols via C–H bond functionalization with the insertion of sulfur dioxide

    K. Zhou, M. Chen, L. Yao and J. Wu, Org. Chem. Front., 2018, Advance Article , DOI: 10.1039/C7QO00811B

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