Volume 60, Issue 8 pp. 3984-3988
Communication

Copper-Catalyzed and Proton-Directed Selective Hydroxymethylation of Alkynes with CO2

Dr. Mei-Yan Wang

Dr. Mei-Yan Wang

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207 China

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Xin Jin

Xin Jin

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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Xiaofei Wang

Xiaofei Wang

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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Shumei Xia

Shumei Xia

State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071 China

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Yue Wang

Yue Wang

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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Shouying Huang

Shouying Huang

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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Ying Li

Ying Li

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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Prof. Liang-Nian He

Corresponding Author

Prof. Liang-Nian He

State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071 China

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

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Prof. Xinbin Ma

Corresponding Author

Prof. Xinbin Ma

Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China

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

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207 China

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First published: 11 November 2020
Citations: 35

Graphical Abstract

A protic switch was applied into the newly developed copper-catalyzed hydroxymethylation of alkynes with CO2. Allylic alcohols and β-chiral branched alkyl alcohols were selectively delivered with high levels of Z/E, regio-, and enantioselectivity.

Abstract

An intriguing strategy for copper-catalyzed hydroxymethylation of alkynes with CO2 and hydrosilane was developed. Switched on/off a proton source, for example, tBuOH, direct hydroxymethylation and reductive hydroxymethylation could be triggered selectively, delivering a series of allylic alcohols and homobenzylic alcohols, respectively, with high levels of Z/E, regio- and enantioselectivity. Such a selective synthesis is attributed to the differences in response of vinylcopper intermediate to proton and CO2. The protonation of vinylcopper species is demonstrated to be prior to hydroxymethylation, thus allowing a diversion from direct alkyne hydroxymethylation to reductive hydroxymethylation in the presence of suitable proton.

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