Volume 41, Issue 1 pp. 27-36
Concise Report

Design and Application of m-Hydroxybenzyl Alcohols in Regioselective (3 + 3) Cycloadditions of 2-Indolymethanols

Yi-Cheng Shi

Yi-Cheng Shi

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

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Xin-Yu Yan

Xin-Yu Yan

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

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Ping Wu

Ping Wu

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

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Song Jiang

Song Jiang

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

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Ran Xu

Ran Xu

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

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Wei Tan

Corresponding Author

Wei Tan

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
Feng Shi

Corresponding Author

Feng Shi

Research Center of Chiral Functional Heterocycles, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116 China

School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu, 213164 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
First published: 15 September 2022
Citations: 26

+These authors contributed equally to this work.

† Dedicated to the Special Issue of Emerging Investigators in 2022.

Comprehensive Summary

A new class of m-hydroxybenzyl alcohols has been designed as competent three-carbon building blocks and achieved their application in 2-indolylmethanol-involved regioselective (3 + 3) cycloadditions under the catalysis of Brønsted acids. By this appoach, a series of indole-fused six-membered cycloadducts have been synthesized in overall good yields (up to 98%) with excellent regioselectivity (all >95: 5 rr), thus affording a powerful method for the construction of indole-fused six-membered rings. Moreover, a catalytic asymmetric version of this (3 + 3) cycloaddition has been preliminarily investigated, which revealed the potential of the reaction for constructing chiral indole-fused six-membered rings in an enantioselective manner. This work not only has accomplished the first design of m-hydroxybenzyl alcohols as competent reactants, but also represents the first application of m-hydroxybenzyl alcohols as three-carbon building blocks in cycloadditions. In addition, this work provides a good example for regioselective and C3-nucleophilic (3 + 3) cycloadditions of 2-indolylmethanols, which will substantially enrich the chemistry of 2-indolylmethanols.image

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