3
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He Y, Zheng Z, Liu Q, Song G, Sun N, Chai X. Tunable Synthesis of 2-Ene-1,4-diones, 4-Hydroxycyclopent-2-en-1-ones, and 2-(Furan-3-yl)acetamides via Palladium-Catalyzed Cascade Reactions of Allenols. J Org Chem 2018; 83:12514-12526. [PMID: 30239199 DOI: 10.1021/acs.joc.8b01753] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient and regioselective synthesis of 2-ene-1,4-diones, 4-hydroxycyclopent-2-en-1-ones, or 2-(furan-3-yl)acetamides is successfully realized through palladium-catalyzed one-pot multicomponent reactions of allenols with aryl iodides and carbon monoxide in the presence of tertiary amines. Interestingly, the selectivity depends on the substitution patterns of the allenol substrates. To be specific, from the reaction of allenols with no substituent attached on the internal position of the allenic moiety, 2-ene-1,4-diones or 4-hydroxycyclopent-2-en-1-ones were formed selectively through carbonylation of aryl iodide followed by acylation of allenol with the in situ formed acyl palladium species, β-hydride elimination of the in situ formed allyl palladium complex, and further tautomerization or intramolecular aldol reaction. From the reaction of allenols bearing a substituent at the internal position of the allenic unit, on the other hand, diversely substituted 2-(furan-3-yl)acetamides were formed through a cascade process combining carbonylation of aryl iodide, acylation, and carbonylation of allenol followed by intramolecular condensation and amination by tertiary amine featuring an oxidant-free C-N bond cleavage.
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Affiliation(s)
- Yan He
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Zhi Zheng
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Qimeng Liu
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Guixian Song
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Nan Sun
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Xinyuan Chai
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
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4
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Ma D, Song Y, Fu C, Zhang F, Guo Y, Huang X, Ma S. E-Selective N-heterocyclic carbene-catalyzed reaction of aldehydes and butadienoates: effect of water and chloroform as the proton shuttle. Org Chem Front 2018. [DOI: 10.1039/c8qo00579f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An N-heterocyclic carbene-catalyzed reaction of aldehydes and butadienoates affording (E)-4-oxo-2-butenoates highly stereoselectively has been developed. Some key intermediates have been detected by an MS study.
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Affiliation(s)
- Dengke Ma
- Laboratory of Molecular Recognition and Synthesis
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Yulong Song
- Laboratory of Molecular Recognition and Synthesis
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Fang Zhang
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Xin Huang
- Laboratory of Molecular Recognition and Synthesis
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
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