1
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Jiang ZT, Chen Z, Xia Y. Modular Synthesis of Fully-Substituted and Configuration-Defined Alkyl Vinyl Ethers Enabled by Dual-Functional Copper Catalysis. Angew Chem Int Ed Engl 2024; 63:e202319647. [PMID: 38198183 DOI: 10.1002/anie.202319647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/10/2024] [Accepted: 01/10/2024] [Indexed: 01/11/2024]
Abstract
Here we present a modular, chemo-, regio-, and stereoselective synthesis of fully-substituted and configuration-defined alkyl vinyl ethers (AVEs) using simple chemical feedstocks. The distinctive approach involves the chemo- and regioselective functionalization of the CF2 unit in gem-difluorinated cyclopropanes with O-H and C-H nucleophiles in a specific order. The resulting highly functionalized cyclopropanyl ethers then undergo a stereoselective ring-opening process to produce fully-substituted and configuration-defined AVEs. These AVEs are rarely accessible through conventional methods and are easily transformable. Mechanistic experiments indicate that the success of this method relies on the use of dual-functional copper catalysis, which is involved in both the functionalization of the CF2 unit and the subsequent ring-opening process.
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Affiliation(s)
- Zhong-Tao Jiang
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University, 610041, Chengdu, China
| | - Zhengzhao Chen
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University, 610041, Chengdu, China
| | - Ying Xia
- West China School of Public Health and West China Fourth Hospital, West China-PUMC C.C. Chen Institute of Health, and State Key Laboratory of Biotherapy, Sichuan University, 610041, Chengdu, China
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2
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Coles-Taylor BL, Ellinwood ML, McCallum MS, McCormack SL, Jones MH, Muñoz AG, Michel BW. Access to Substituted Indenol Ethers via a Regioselective Intermolecular Carbopalladation Cascade. J Org Chem 2022; 87:16517-16525. [PMID: 36455157 DOI: 10.1021/acs.joc.2c02213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Alkyne carbopalladation reactions can rapidly generate multiple new C-C bonds; however, regioselectivity is challenging for intermolecular variants. Using ynol ethers, we observe complete regiocontrol of migratory insertion followed by a second migratory insertion with a pendant alkene to turn-over the catalytic cycle. The resulting products are oligosubstituted 1-indenol ethers with defined stereochemistry based on the initial alkene geometry. Blocking β-hydride elimination allowed for C-H and C-C reductive elimination steps for catalyst turnover.
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Affiliation(s)
- Brandon L Coles-Taylor
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Mitchell L Ellinwood
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Maximilian S McCallum
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Sara L McCormack
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Meredith H Jones
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Andrés G Muñoz
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Brian W Michel
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
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3
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Golling S, Hansjacob P, Bami N, Leroux FR, Donnard M. Direct Access to 2,3-Disubstituted Amido-Indenones through Annulation of 2-Iodobenzaldehydes with Ynamides. J Org Chem 2022; 87:16860-16866. [PMID: 36472915 DOI: 10.1021/acs.joc.2c02054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this paper we report the annulation reaction between 2-iodobenzaldehyde derivatives and various ynamides. This palladium-catalyzed reaction leads to rare polysubstituted amino-indenones in good yields with a regioselectivity up to complete. Remarkably, a regiodivergent selectivity has been identified between aryl and alkyl or silyl ynamides, with the first leading mainly to 2-amido-indenones and the second to 3-amido-indenones.
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Affiliation(s)
- Stéphane Golling
- CNRS, UMR 7042-LIMA, ECPM, Université de Strasbourg, Université de Haute-Alsace, F-67000 Strasbourg, France
| | - Pierre Hansjacob
- CNRS, UMR 7042-LIMA, ECPM, Université de Strasbourg, Université de Haute-Alsace, F-67000 Strasbourg, France
| | - Nassim Bami
- CNRS, UMR 7042-LIMA, ECPM, Université de Strasbourg, Université de Haute-Alsace, F-67000 Strasbourg, France
| | - Frédéric R Leroux
- CNRS, UMR 7042-LIMA, ECPM, Université de Strasbourg, Université de Haute-Alsace, F-67000 Strasbourg, France
| | - Morgan Donnard
- CNRS, UMR 7042-LIMA, ECPM, Université de Strasbourg, Université de Haute-Alsace, F-67000 Strasbourg, France
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4
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Puri S. Oxygen as a Heteroatom in Propargylic Alcohols: Reactivity, Selectivity, and Applications. ChemistrySelect 2020. [DOI: 10.1002/slct.202002141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Surendra Puri
- Department of ChemistryHemvati Nandan Bahuguna Garhwal University (A Central University) Srinagar (Garhwal) Uttarakhand 246174 India
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5
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Coles-Taylor BL, McCallum MS, Lee JS, Michel BW. Accessing 4-oxy-substituted isoquinolinones via C-H activation and regioselective migratory insertion with electronically biased ynol ethers. Org Biomol Chem 2018; 16:8639-8646. [PMID: 30383066 DOI: 10.1039/c8ob02622j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rhodium-catalyzed C-H activation and annulation with ynol ethers to directly provide 4-oxy substituted isoquinolinones is reported. The polarized nature of ynol ethers provides an electronic bias for controlling the regioselectivity of the migratory insertion process. While the highly reactive nature of ynol ethers presents a challenge, mild conditions were found to provide product in moderate to good yield. Utility was demonstrated by application in the synthesis of a prolyl-4-hydroxylase inhibitor framework.
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6
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Liu C, Xue Y, Ding L, Zhang H, Yang F. Au-Catalyzed Addition of Nucleophiles to Chloroalkynes: A Regio- and Stereoselective Synthesis of (Z
)-Alkenyl Chlorides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801222] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Congrong Liu
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Yunbo Xue
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Lianghui Ding
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Haiyun Zhang
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Fulai Yang
- Department State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University; 210009 Nanjing P. R. China
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7
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Wu K, Sun N, Hu B, Shen Z, Jin L, Hu X. Geometry-Constrained Iminopyridyl Palladium-Catalyzed Hydroarylation of Alkynes to Prepare Tri-substituted Alkenes Using Alcohol as Reductant. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800423] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ke Wu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310032 People's Republic of China
| | - Nan Sun
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310032 People's Republic of China
| | - Baoxiang Hu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310032 People's Republic of China
| | - Zhenlu Shen
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310032 People's Republic of China
| | - Liqun Jin
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310032 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; The Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
| | - Xinquan Hu
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310032 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; The Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
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8
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Jin L, Qian J, Sun N, Hu B, Shen Z, Hu X. Pd-Catalyzed reductive heck reaction of olefins with aryl bromides for Csp 2-Csp 3 bond formation. Chem Commun (Camb) 2018; 54:5752-5755. [PMID: 29781006 DOI: 10.1039/c8cc02571a] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We developed a Pd-catalyzed intermolecular reductive Heck reaction to construct Csp2-Csp3 bonds between aryl bromides and olefins. Various styrene derivatives, acyclic and cyclic alkenes, were well tolerated to couple with varied aryl bromides in linear selectivity. Kinetic and deuterium labeling experiments suggested that i-PrOH provides a hydride through β-H elimination.
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Affiliation(s)
- Liqun Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China.
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9
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Takahashi K, Mamiya N, Fukushima K, Tsubuki M, Honda T. Cs2CO3-Promoted Vinylation of Phenols with Trichloroethylene: Facile Synthesis of (E)-1,2-Dichloro-1-phenoxyethenes. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Yu J, Zhang Z, Zhou S, Zhang W, Tong R. Evolution of two routes for asymmetric total synthesis of tetrahydroprotoberberine alkaloids. Org Chem Front 2018. [DOI: 10.1039/c7qo00776k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Two routes were developed for the catalytic asymmetric total synthesis of tetrahydroprotoberberine alkaloids.
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Affiliation(s)
- Jingxun Yu
- Department of Chemistry
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Zhihong Zhang
- Department of Chemistry
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Shiqiang Zhou
- Department of Chemistry
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Wei Zhang
- Department of Chemistry
- Hong Kong University of Science and Technology
- Kowloon
- China
| | - Rongbiao Tong
- Department of Chemistry
- Hong Kong University of Science and Technology
- Kowloon
- China
- HKUST Shenzhen Research Institute
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11
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Masai H, Matsuda W, Fujihara T, Tsuji Y, Terao J. Regio- and Stereoselective Synthesis of Triarylalkene-Capped Rotaxanes via Palladium-Catalyzed Tandem Sonogashira/Hydroaryl Reaction of Terminal Alkynes. J Org Chem 2017; 82:5449-5455. [DOI: 10.1021/acs.joc.7b00442] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroshi Masai
- Department
of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Wakana Matsuda
- Department
of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Tetsuaki Fujihara
- Department
of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yasushi Tsuji
- Department
of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Jun Terao
- Department
of Basic Science, Graduate School of Art and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
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12
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Dwivedi V, Rajesh M, Kumar R, Kant R, Sridhar Reddy M. A stereoselective thiocyanate conjugate addition to electron deficient alkynes and concomitant cyclization to N,S-heterocycles. Chem Commun (Camb) 2017; 53:11060-11063. [DOI: 10.1039/c7cc06081e] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A regio- and stereoselective thiocyanate addition to ynones and the concomitant cyclizations of resultant vinyl thiocyanate to access thio-aza heterocycles are achieved using KSCN in AcOH without the need of any metal catalyst.
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Affiliation(s)
- Vikas Dwivedi
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Manda Rajesh
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Ravi Kumar
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| | - Ruchir Kant
- MSB Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Maddi Sridhar Reddy
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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13
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Zhu H, Jin W, He J, Zhang Y, Zhu G. Synthesis of (E)-α,β-Unsaturated CarbonylsviaSilver-Catalyzed Tandem Epoxide Rearrangement/Intermolecular Carbonyl- Heteroalkyne Metathesis. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600623] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hui Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Weiwei Jin
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Jiayao He
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Yan Zhang
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Gangguo Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
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14
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Minami Y, Noguchi Y, Yamada K, Hiyama T. Intramolecular Hydroalkylation via Activation oftert-Butyl C–H Bond in Silylethynyl Aryl Ethers. CHEM LETT 2016. [DOI: 10.1246/cl.160618] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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15
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Minami Y, Sakai M, Anami T, Hiyama T. Annulation of Alkynyl Aryl Ethers with Allyl Pivalates To Give 2,3‐Bismethylenechromanes through Double C−H Bond Cleavage. Angew Chem Int Ed Engl 2016; 55:8701-5. [DOI: 10.1002/anie.201602252] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/26/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Yasunori Minami
- Research and Development Initiative Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Megumi Sakai
- Department of Applied Chemistry Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Tomohiro Anami
- Department of Applied Chemistry Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Tamejiro Hiyama
- Research and Development Initiative Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
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16
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Minami Y, Sakai M, Anami T, Hiyama T. Annulation of Alkynyl Aryl Ethers with Allyl Pivalates To Give 2,3‐Bismethylenechromanes through Double C−H Bond Cleavage. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602252] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yasunori Minami
- Research and Development Initiative Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Megumi Sakai
- Department of Applied Chemistry Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Tomohiro Anami
- Department of Applied Chemistry Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Tamejiro Hiyama
- Research and Development Initiative Chuo University Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
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17
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Abstract
Electron-rich alkynes, such as ynamines, ynamides, and ynol ethers, are functional groups that possess significant potential in organic chemistry for the formation of carbon-carbon bonds. While the synthetic utility of ynamides has recently been expanded considerably, 1-alkynyl ethers, which possess many of the reactivity features of ynamides, have traditionally been far less investigated because of concerns about their stability. Like ynamides, ynol ethers are relatively unhindered to approach by functional groups present in the same or different molecules because of their linear geometry, and they can potentially form up to four new bonds in a single transformation. Ynol ethers also possess unique reactivity features that make them complementary to ynamides. Research over the past decade has shown that ynol ethers formed in situ from stable precursors engage in a variety of useful carbon-carbon bond-forming processes. Upon formation at -78 °C, allyl alkynyl ethers undergo a rapid [3,3]-sigmatropic rearrangement to form allyl ketene intermediates, which may be trapped with alcohol or amine nucleophiles to form γ,δ-unsaturated carboxylic acid derivatives. The process is stereospecific, takes place in minutes at cryogenic temperatures, and affords products containing (quaternary) stereogenic carbon atoms. Trapping of the intermediate allyl ketene with carbonyl compounds, epoxides, or oxetanes instead leads to complex α-functionalized β-, γ-, or δ-lactones, respectively. [3,3]-Sigmatropic rearrangement of benzyl alkynyl ethers also takes place at temperatures ranging from -78 to 60 °C to afford substituted 2-indanones via intramolecular carbocyclization of the ketene intermediate. tert-Butyl alkynyl ethers containing pendant di- and trisubstituted alkenes and enol ethers are stable to chromatographic isolation and undergo a retro-ene/[2 + 2] cycloaddition reaction upon mild thermolysis (90 °C) to afford cis-fused cyclobutanones and donor-acceptor cyclobutanones in good to excellent yields and diastereoselectivities. This process, which takes place under neutral conditions and proceeds through an aldoketene intermediate, obviates the need to employ moisture-sensitive and/or unstable acid chlorides under basic conditions for intramolecular [2 + 2] cycloaddition reactions. Furthermore, Lewis acid-catalyzed intramolecular condensations of both ethyl and tert-butyl ynol ethers with tethered acetals efficiently provide protected five-, six-, and seven-membered cyclic Baylis-Hilman adducts. Metalated ethoxyacetylene can also participate in multiple bond-forming reactions that avoid isolation of the alkynyl ether intermediate. Lewis acid-promoted tandem additions employing epoxides/oxetanes and carbonyl compounds give rise to (Z)-α-alkylidene and α-benzylidene lactones stereoselectively in high overall yields. Three new carbon-carbon bonds and a ring are formed in this atom-economical single-flask transformation, resulting in a significant increase in molecular complexity. This Account provides a detailed overview of these useful transformations with the intention of stimulating further interest in and research on ynol ethers and their application in organic synthesis.
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Affiliation(s)
- Thomas G. Minehan
- Department of Chemistry and
Biochemistry, California State University, Northridge, 18111 Nordhoff
Street, Northridge, California 91330, United States
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18
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Hu L, Gui Q, Chen X, Tan Z, Zhu G. HOTf-Catalyzed, Solvent-Free Oxyarylation of Ynol Ethers and Thioethers. J Org Chem 2016; 81:4861-8. [PMID: 27163354 DOI: 10.1021/acs.joc.6b00535] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel HOTf-catalyzed oxyarylation of ynol ethers and thioethers has been realized with aryl sulfoxides as the oxyarylating reagents, providing α-arylated esters or thioesters in good to excellent yields. Notably, all atoms of the starting materials were incorporated in the product (100% atom economy) and the reaction proceeded under very mild conditions. It was found that the reaction can be ran under air and that the best yields are obtained under solvent-free conditions.
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Affiliation(s)
- Liang Hu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, P. R. China
| | - Qingwen Gui
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, P. R. China
| | - Xiang Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, P. R. China
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, P. R. China
| | - Gangguo Zhu
- Department of Chemistry, Zhejiang Normal University , 688 Yingbin Road, Jinhua 321004, China
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19
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Boyarskiy VP, Ryabukhin DS, Bokach NA, Vasilyev AV. Alkenylation of Arenes and Heteroarenes with Alkynes. Chem Rev 2016; 116:5894-986. [DOI: 10.1021/acs.chemrev.5b00514] [Citation(s) in RCA: 319] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vadim P. Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Dmitry S. Ryabukhin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per. 5, Saint Petersburg 194021, Russia
| | - Nadezhda A. Bokach
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Aleksander V. Vasilyev
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per. 5, Saint Petersburg 194021, Russia
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20
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Minami Y, Hiyama T. Synthetic Transformations through Alkynoxy-Palladium Interactions and C-H Activation. Acc Chem Res 2016; 49:67-77. [PMID: 26651014 DOI: 10.1021/acs.accounts.5b00414] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Organic synthesis based on straightforward transformations is essential for environmentally benign manufacturing for the invention of novel pharmaceuticals, agrochemicals, and organoelectronic materials in order to ultimately realize a sustainable society. Metal-catalyzed C-H bond-cleaving functionalization has become a promising method for achieving the above goal. For site-selective C-H bond cleavage, so-called directing groups, i.e., ligands attached to substrates, are employed. Commonly utilized directing groups are carbonyls, imines, carboxyls, amides, and pyridyls, which σ-donate electron pairs to metals. On the other hand, unsaturated substrates such as alkenes and alkynes, which participate largely as reactants in organic synthesis, are prepared readily by a wide variety of synthetic transformations and are also employed as reactants in organometallic chemistry. Moreover, such unsaturated groups form complexes with some metals by ligation of their p orbitals via donation and back-donation. However, the use of unsaturated bonds as directing groups has not been studied extensively. We have been involved in the development of methods for the cleavage of C-H bonds by means of transition-metal catalysts to achieve new carbon-carbon bond-forming reactions and incidentally came to focus on the alkynoxy group (-OC≡C-), which shows a ketene-like resonance structure. We expected the alkynoxy group to interact electrophilically with a low-valent transition-metal complex in order to cleave adjacent C-H bonds. In this Account, we summarize our recent achievements on C-H activation based on interactions of palladium with the alkynoxy group in alkynyl aryl ethers. The alkynoxy group plays two roles in the transformation: as a directing group for adjacent C-H bond activation and as an acceptor for the carbon and hydrogen fragments. A typical example is palladium-catalyzed ortho-C-H bond activation in alkynoxyarenes followed by sequential insertion/annulation with internal alkynes and the alkynoxy group to produce 2-methylidene-2H-1-benzopyrans. Mechanistic studies have shown that the presence of both oxygen and alkynyl moieties is essential for selective ortho-C-H bond activation and subsequent annulation. In addition to internal alkynes, norbornene, allenes, isocyanates, and ketenes produce the corresponding oxacycles. It is worthy of note that benzoxadinones formed by the reaction with isocyanates exhibit solid-state luminescence. In addition, 2-methylphenyl alkynyl ethers and 2-alkynoxybiaryls undergo intramolecular annulation at the benzylic γ-position and aryl δ-position via C-H bond activation to give benzofurans and dibenzopyrans, respectively. The disclosed methods allow us to construct useful π-conjugated systems in a straightforward manner.
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Affiliation(s)
- Yasunori Minami
- Research and Development
Initiative, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Tamejiro Hiyama
- Research and Development
Initiative, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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21
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Minami Y, Shiraishi Y, Kodama T, Kanda M, Yamada K, Anami T, Hiyama T. Alkynoxy-Directed C–H Functionalizations: Palladium(0)-Catalyzed Annulations of Alkynyl Aryl Ethers with Alkynes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150180] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasunori Minami
- Research and Development Initiative, Chuo University
- JST, ACT-C
| | | | | | - Mayuko Kanda
- Department of Applied Chemistry, Chuo University
| | | | | | - Tamejiro Hiyama
- Research and Development Initiative, Chuo University
- JST, ACT-C
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22
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Bai Y, Yin J, Liu Z, Zhu G. Construction of 1-Naphthols via Benzannulation Based on the Reaction of Aryl tert-Butyl Ynol Ethers with Ynamides or Ynol Ethers. J Org Chem 2015; 80:10226-33. [PMID: 26389568 DOI: 10.1021/acs.joc.5b01858] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A new version of benzannulation featuring the use of aromatic tert-butyl ynol ethers as the convenient precursors for arylketenes has been developed. Both ynamides and ynol ethers undergo this reaction smoothly, giving 3-amino and 3-alkoxy 1-naphthols in good to excellent yields under the heated reaction conditions. The high efficiency, excellent regioselectivity, good functional group compatibility, and broad substrate scope render this reaction particularly valuable for organic synthesis.
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Affiliation(s)
- Yihui Bai
- Department of Chemistry, Zhejiang Normal University , 688 Yingbin Road, Jinhua 321004, China
| | - Jing Yin
- Department of Chemistry, Zhejiang Normal University , 688 Yingbin Road, Jinhua 321004, China
| | - Zhicheng Liu
- Department of Chemistry, Zhejiang Normal University , 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Department of Chemistry, Zhejiang Normal University , 688 Yingbin Road, Jinhua 321004, China
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23
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Palladium-catalyzed annulation of alkynyl aryl ethers with isocyanates through o-C–H cleavage. Synthesis of solid-state emissive 2-methylidene-2H-1,4-benzoxazin-3(4H)-ones. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Saito N, Sun Z, Sato Y. Nickel-promoted highly regioselective carboxylation of aryl ynol ether and its application to the synthesis of chiral β-aryloxypropionic acid derivatives. Chem Asian J 2015; 10:1170-6. [PMID: 25677637 DOI: 10.1002/asia.201403399] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Indexed: 11/07/2022]
Abstract
Nickel(0)-promoted carboxylation of aryl ynol ether proceeded in a highly regioselective manner to produce α-substituted-β-aryloxyacrylic acid derivatives. The α-substituted-β-aryloxyacrylic acids were transformed into the corresponding β-aryloxypropionic acid derivative as an optically active form via rhodium-catalyzed asymmetric hydrogenation.
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Affiliation(s)
- Nozomi Saito
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812 (Japan).
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25
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Hari Babu M, Dwivedi V, Kant R, Sridhar Reddy M. Palladium-Catalyzed Regio- and Stereoselective Cross-Addition of Terminal Alkynes to Ynol Ethers and Synthesis of 1,4-Enyn-3-ones. Angew Chem Int Ed Engl 2015; 54:3783-6. [DOI: 10.1002/anie.201411261] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Indexed: 01/08/2023]
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26
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Hari Babu M, Dwivedi V, Kant R, Sridhar Reddy M. Palladium-Catalyzed Regio- and Stereoselective Cross-Addition of Terminal Alkynes to Ynol Ethers and Synthesis of 1,4-Enyn-3-ones. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411261] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Hu L, Che C, Tan Z, Zhu G. A rapid and selective synthesis of α,α-fluorohalo esters via fluorohalogenative or difluorinative hydration of ynol ethers. Chem Commun (Camb) 2015; 51:16641-4. [DOI: 10.1039/c5cc07471a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Selectfluor-mediated fluorohalogenative or difluorinative hydration of ynol ethers is described, giving various α,α-fluorohalo esters including α,α-bromofluoro, α,α-chlorofluoro, α,α-fluoroiodo, and α,α-difluoro esters in a highly selective manner under mild reaction conditions.
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Affiliation(s)
- Liang Hu
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
| | - Chao Che
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Gangguo Zhu
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
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28
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Hydroarylations of Heterobicyclic Alkenes through Rhodium-Catalyzed Directed CH Functionalizations of S-Aryl Sulfoximines. Chemistry 2014; 20:15732-6. [DOI: 10.1002/chem.201404859] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 01/15/2023]
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29
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Yin J, Bai Y, Mao M, Zhu G. Silver-catalyzed regio- and stereoselective addition of carboxylic acids to ynol ethers. J Org Chem 2014; 79:9179-85. [PMID: 25188878 DOI: 10.1021/jo501615a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A silver-catalyzed trans addition of carboxylic acids to ynol ethers is described. The reaction has a broad scope with respect to carboxylic acids and ynol ethers, delivering (Z)-α-alkoxy enol esters in good yields with excellent regio- and stereoselectivity. Meaningfully, the Ni-catalyzed selective coupling of alkenyl C-OPiv bonds of (Z)-α-alkoxy enol esters with boronic acids enables a convenient route to the access of (E)-enol ethers. As such, the two-step procedure, consisted of a hydrocarboxylation and a subsequent Suzuki-Miyaura coupling, offers a formal trans hydroarylation of ynol ethers, thus providing a good complementary method to our previous report.
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Affiliation(s)
- Jing Yin
- Department of Chemistry, Zhejiang Normal University , 688 Yingbin Road, Jinhua 321004, China
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30
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Kong W, Che C, Wu J, Ma L, Zhu G. Pd-Catalyzed Regio- and Stereoselective Addition of Boronic Acids to Silylacetylenes: A Stereodivergent Assembly of β,β-Disubstituted Alkenylsilanes and Alkenyl Halides. J Org Chem 2014; 79:5799-805. [DOI: 10.1021/jo500925p] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wei Kong
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Chao Che
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Jialin Wu
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Liai Ma
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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