Volume 56, Issue 12 pp. 3237-3241
Communication

Iridium-Catalyzed Intermolecular Asymmetric Dearomatization of β-Naphthols with Allyl Alcohols or Allyl Ethers

Hang-Fei Tu

Hang-Fei Tu

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 China

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Prof. Dr. Chao Zheng

Prof. Dr. Chao Zheng

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 China

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Ren-Qi Xu

Ren-Qi Xu

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 China

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Xi-Jia Liu

Xi-Jia Liu

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 China

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Prof. Dr. Shu-Li You

Corresponding Author

Prof. Dr. Shu-Li You

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 China

Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072 China

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First published: 09 January 2017
Citations: 108

Graphical Abstract

Introducing asymmetry: The iridium catalyst generated from [{Ir(cod)Cl}2] (cod=cyclooctadiene) and a chiral P/olefin ligand facilitates the intermolecular asymmetric dearomatization of β-naphthols with allyl alcohols or allyl ethers. Highly functionalized β-naphthalenone compounds bearing an all-carbon-substituted quaternary chiral center were obtained in up to 92 % yield and 98 % ee.

Abstract

An Ir-catalyzed intermolecular asymmetric dearomatization reaction of β-naphthols with allyl alcohols or allyl ethers was developed. When an iridium catalyst generated from [Ir(COD)Cl]2 (COD=cyclooctadiene) and a chiral P/olefin ligand is employed, highly functionalized β-naphthalenone compounds bearing an all-carbon-substituted quaternary chiral center were obtained in up to 92 % yield and 98 % ee. The direct utilization of allyl alcohols as electrophiles represents an improvement from the viewpoint of atom economy. Allyl ethers were found to undergo asymmetric allylic substitution reaction under Ir catalysis for the first time. The diverse transformations of the dearomatized product to various motifs render this method attractive.

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