An air-stable half-sandwich RuII complex as an efficient catalyst for [3+2] annulation of 2-arylcyclo-2-enones with alkynes

Yinsong Zhao; Zhen He; Shiqing Li; Junbin Tang; Ge Gao; Jingbo Lan; Jingsong You

doi:10.1039/C5CC10169G

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An air-stable half-sandwich Ru^II complex as an efficient catalyst for [3+2] annulation of 2-arylcyclo-2-enones with alkynes†

Yinsong Zhao,^a Zhen He,^a Shiqing Li,^a Junbin Tang,^a Ge Gao,*^a Jingbo Lan^a and Jingsong You*^a

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* Corresponding authors

^a Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
E-mail: gg2b@scu.edu.cn, jsyou@scu.edu.cn

Abstract

An air-stable half-sandwich ruthenium^II complex, [Ru(p-cymene)(MeCN)₃](SbF₆)₂, was synthesized and characterized. It exhibited unique catalytic ability in a [3+2] annulation reaction of 2-arylcyclo-2-enones with internal alkynes via C(sp²)–H/alkene functionalization, which offered a rapid and atom-economical methodology to construct various synthetically challenging spiro carbocyclic indenes bearing a quaternary carbon.

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Article information

DOI: https://doi.org/10.1039/C5CC10169G
Article type: Communication
Submitted: 10 Dec 2015
Accepted: 12 Jan 2016
First published: 12 Jan 2016

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Chem. Commun., 2016,52, 4613-4616

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An air-stable half-sandwich Ru^II complex as an efficient catalyst for [3+2] annulation of 2-arylcyclo-2-enones with alkynes

Y. Zhao, Z. He, S. Li, J. Tang, G. Gao, J. Lan and J. You, Chem. Commun., 2016, 52, 4613 DOI: 10.1039/C5CC10169G

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