1
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Hajinasiri R. Allenoates in organic synthesis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Wu M, Han Z, Ni H, Wang N, Ding K, Lu Y. Phosphine-catalyzed Divergent Domino Processes between γ-Substituted Allenoates and Carbonyl-Activated Alkenes. Chem Sci 2022; 13:3161-3168. [PMID: 35414887 PMCID: PMC8926293 DOI: 10.1039/d1sc06364b] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/10/2022] [Indexed: 11/25/2022] Open
Abstract
Highly enantioselective and chemodivergent domino reactions between γ-substituted allenoates and activated alkenes have been developed. In the presence of NUSIOC-Phos, triketone enone substrates smoothly reacted with γ-substituted allenoates to form bicyclic furofurans in good yields with high stereoselectivities. Alternatively, the reaction between diester-activated enone substrates and γ-substituted allenoates formed chiral conjugated 1,3-dienes in good yields with excellent enantioselectivities. Notably, by employing substrates with subtle structural difference, under virtually identical reaction conditions, we were able to access two types of chiral products, which are of biological relevance and synthetic importance. Highly enantioselective and chemodivergent domino reactions between γ-substituted allenoates and activated alkenes have been developed.![]()
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Affiliation(s)
- Mingyue Wu
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Zhaobin Han
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Huanzhen Ni
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Nengzhong Wang
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Yixin Lu
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
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3
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Anwar S, Lin LT, Srinivasadesikan V, Gudise VB, Chen K. [3+2] regioselective annulation reaction of 2-arylidene-1,3-indandiones towards synthesis of spirocyclopentenes: understanding the mechanism of γ-attack vs. α-attack using DFT studies. RSC Adv 2021; 11:38648-38653. [PMID: 35493224 PMCID: PMC9044273 DOI: 10.1039/d1ra07165c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/19/2021] [Indexed: 12/18/2022] Open
Abstract
A regioselective [3+2] cyclisation reaction between 2-arylidene-1,3-indanedione and ethyl 2,3-butadienoate catalysed by triphenylphosphine has been demonstrated to synthesize functionalised spirocyclic cyclopentenes. The reaction tolerated various electron-rich and electron-deficient aryl substituted 2-arylidene-1,3-indanediones with high to excellent chemical yields (up to 99%) and moderate to good regioselectivity (up to 5 : 1). DFT studies have also been carried out to understand the regioselective nature of this reaction. The results of Frontier molecular orbital calculations and the activation energy (Ea) favour the formation of compound 3avia γ-attack compared to that of 4avia α-attack. A [3+2] annulation protocol for the construction of functionalized spirocyclopentenes utilizing 1,3-indanedione derived benzylidene-1,3-indanedione and ethyl-2,3-butadienoate at room temperature was developed.![]()
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Affiliation(s)
- Shaik Anwar
- Division of Chemistry, Department of Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522 213 Guntur Andhra Pradesh India http://www.vignan.ac.in/bshanwar.php +91-8632344700.,Department of Chemistry, National Taiwan Normal University 88 Sec. 4, TingChow Road Taipei Taiwan 116 ROC +86-2-29324249 +86-2-7734-6124
| | - Li-Tzu Lin
- Department of Chemistry, National Taiwan Normal University 88 Sec. 4, TingChow Road Taipei Taiwan 116 ROC +86-2-29324249 +86-2-7734-6124
| | - V Srinivasadesikan
- Division of Chemistry, Department of Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522 213 Guntur Andhra Pradesh India http://www.vignan.ac.in/bshanwar.php +91-8632344700
| | - Veera Babu Gudise
- Division of Chemistry, Department of Sciences and Humanities, Vignan's Foundation for Science Technology and Research-VFSTR (Deemed to be University) Vadlamudi-522 213 Guntur Andhra Pradesh India http://www.vignan.ac.in/bshanwar.php +91-8632344700
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University 88 Sec. 4, TingChow Road Taipei Taiwan 116 ROC +86-2-29324249 +86-2-7734-6124
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4
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Huang Y, Liao J, Wang W, Liu H, Guo H. Synthesis of heterocyclic compounds through nucleophilic phosphine catalysis. Chem Commun (Camb) 2020; 56:15235-15281. [PMID: 33320123 DOI: 10.1039/d0cc05699e] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Nucleophilic phosphine catalysis is a practical and powerful tool for the synthesis of various heterocyclic compounds with the advantages of environmentally friendly, metal-free, and mild reaction conditions. The present report summarizes the construction of four to eight-membered heterocyclic compounds containing nitrogen, oxygen and sulphur atoms through phosphine-catalyzed intramolecular annulations and intermolecular [2+2], [3+2], [4+1], [3+1+1], [5+1], [4+2], [2+2+2], [3+3], [4+3] and [3+2+3] annulations of electron-deficient alkenes, allenes, alkynes and Morita-Baylis-Hillman carbonates.
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Affiliation(s)
- Yifan Huang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, China.
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5
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Wu L, Chen K, Huang Y, Li E. Phosphine‐Catalyzed δ‐Addition Reaction of γ‐Substituted Allenoates with Isatin Derivatives. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Lulu Wu
- School of ScienceHenan Agricultural University Zhengzhou 450002 China
| | - Kaihong Chen
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of chemistryNankai University Tianjin 300071 China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of chemistryNankai University Tianjin 300071 China
| | - Er‐Qing Li
- College of ChemistryGreen Catalysis CenterZhengzhou University Zhengzhou 450001 China
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6
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Li EQ, Huang Y. Recent advances in phosphine catalysis involving γ-substituted allenoates. Chem Commun (Camb) 2020; 56:680-694. [DOI: 10.1039/c9cc08241g] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This feature article will describe the selected examples of organophosphine catalysis of γ-substituent allenoates with a wide range of electrophiles to give diverse annulations.
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Affiliation(s)
- Er-Qing Li
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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7
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Qin Z, Liu R, Zhou R, Li R, He Z. Phosphine‐Catalyzed [3+2] and [2+4] Annulations of γ‐Methyl Allenoates with Aryl α‐Keto Esters: Stereoselective Syntheses of Functionalized Tetrahydrofurans and 4‐Chromanols. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zifeng Qin
- The State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 100193 P.R. China
| | - Rongfang Liu
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 P.R. China
| | - Rong Zhou
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 P.R. China
| | - Ruifeng Li
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 P.R. China
| | - Zhengjie He
- The State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 100193 P.R. China
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8
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Tanaka K, Kishimoto M, Asada Y, Tanaka Y, Hoshino Y, Honda K. Access to Electron-Deficient 2,2-Disubstituted Chromanes: A Highly Regioselective One-Pot Synthesis via an Inverse-Electron-Demand [4 + 2] Cycloaddition of ortho-Quinone Methides. J Org Chem 2019; 84:13858-13870. [PMID: 31580068 DOI: 10.1021/acs.joc.9b02036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report the one-pot synthesis of 2,2-disubstituted chromanes with electron-withdrawing substituents. This reaction provides a simple yet efficient route to a wide range of electron-deficient chromanes in high yield and excellent regioselectivity. The reaction of salicylaldehyde with 1,1-disubstituted ethylenes smoothly furnishes these electron-deficient chromanes, which can be further transformed into functionalized chromanes or chromene. For example, BW683C was effectively synthesized from 5-chlorosalicylaldehyde with 4-chlorostyrene in two steps in excellent yield. The present reaction thus provides versatile access to functionalized electron-deficient chromanes and chromenes and therefore constitutes a promising tool for the synthesis of biologically and photochemically active molecules.
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Affiliation(s)
- Kenta Tanaka
- Graduate School of Environment and Information Sciences , Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama 240-8501 , Japan
| | - Mami Kishimoto
- Graduate School of Environment and Information Sciences , Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama 240-8501 , Japan
| | - Yosuke Asada
- Graduate School of Environment and Information Sciences , Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama 240-8501 , Japan
| | - Yuta Tanaka
- Graduate School of Environment and Information Sciences , Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama 240-8501 , Japan
| | - Yujiro Hoshino
- Graduate School of Environment and Information Sciences , Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama 240-8501 , Japan
| | - Kiyoshi Honda
- Graduate School of Environment and Information Sciences , Yokohama National University , Tokiwadai, Hodogaya-ku, Yokohama 240-8501 , Japan
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9
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Wu M, Han Z, Li K, Wu J, Ding K, Lu Y. Cyclohexyl-Fused, Spirobiindane-Derived, Phosphine-Catalyzed Synthesis of Tricyclic γ-Lactams and Kinetic Resolution of γ-Substituted Allenoates. J Am Chem Soc 2019; 141:16362-16373. [DOI: 10.1021/jacs.9b07418] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mingyue Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Zhaobin Han
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, PR China
| | - Kaizhi Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Ji’en Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, PR China
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian 359297, PR China
- National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial Park, Suzhou, Jiangsu 215123, PR China
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10
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Liu R, Qin Z, Fan B, Li R, Zhou R, He Z. Phosphine-Catalyzed Chemo- and Diastereoselective [2 + 2 + 2] and [3 + 2] Annulations of γ-Methyl Allenoates with Doubly Activated Olefins: Syntheses of Highly Substituted Cyclohexanes and Cyclopentenes. J Org Chem 2019; 84:12490-12498. [DOI: 10.1021/acs.joc.9b01968] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rongfang Liu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zifeng Qin
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Binbin Fan
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Ruifeng Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Rong Zhou
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zhengjie He
- The State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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11
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Gan Z, Gong Y, Chu Y, Li EQ, Huang Y, Duan Z. Phosphine-catalyzed regiodivergent annulations of γ-substituted allenoates with conjugated dienes. Chem Commun (Camb) 2019; 55:10120-10123. [DOI: 10.1039/c9cc05207k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A phosphine catalyzed regiodivergent annulation of γ-substituted allenoates with conjugated dienes is reported. The high regioselectivity can be achieved by tuning the nucleophilicity of the phosphine catalyst.
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Affiliation(s)
- Zhenjie Gan
- College of Chemistry and Molecular Engineering
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
- Zhengzhou 450001
| | - Yanchuan Gong
- College of Chemistry and Molecular Engineering
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
- Zhengzhou 450001
| | - Yunpeng Chu
- College of Chemistry and Molecular Engineering
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
- Zhengzhou 450001
| | - Er-Qing Li
- College of Chemistry and Molecular Engineering
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
- Zhengzhou 450001
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Zheng Duan
- College of Chemistry and Molecular Engineering
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
- Zhengzhou 450001
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12
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Li Y, Chen X, Chen X, Shen X. Organophosphine-Catalyzed [4C+X] Annulations. Molecules 2018; 23:molecules23113022. [PMID: 30463230 PMCID: PMC6278662 DOI: 10.3390/molecules23113022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 11/12/2018] [Accepted: 11/15/2018] [Indexed: 12/03/2022] Open
Abstract
In recent years, there have been extraordinary developments of organophosphine-catalyzed reactions. This includes progress in the area of [4C+X] annulations, which are of particular interest due to their potential for the rapid construction of 5–8-membered cyclic products. In this short overview, we summarize the remarkable progress, emphasizing reaction mechanisms and key intermediates involved in the processes. The discussion is classified according to the type of electrophilic reactants that acted as C4 synthons in the annulation process, in the order of α-alkyl allenoates, γ-alkyl allenoates, α-methyl allene ketones, β′-OAc allenoate, δ-OAc allenoate, activated dienes and cyclobutenones.
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Affiliation(s)
- Yangyan Li
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China.
| | - Xiang Chen
- Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuchang District, Wuhan 430072, Hubei, China.
| | - Xiaoming Chen
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China.
| | - Xiao Shen
- Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuchang District, Wuhan 430072, Hubei, China.
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13
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Abstract
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of cases, these electrophiles possess carbon-carbon multiple bonds: alkenes (section 2), allenes (section 3), alkynes (section 4), and Morita-Baylis-Hillman (MBH) alcohol derivatives (MBHADs; section 5). Within each of these sections, the reactions are compiled based on the nature of the second starting material-nucleophiles, dinucleophiles, electrophiles, and electrophile-nucleophiles. Nucleophilic phosphine catalysis reactions that occur via the initial addition to starting materials that do not possess carbon-carbon multiple bonds are collated in section 6. Although not catalytic in the phosphine, the formation of ylides through the nucleophilic addition of phosphines to carbon-carbon multiple bond-containing compounds is intimately related to the catalysis and is discussed in section 7. Finally, section 8 compiles miscellaneous topics, including annulations of the Hüisgen zwitterion, phosphine-mediated reductions, iminophosphorane organocatalysis, and catalytic variants of classical phosphine oxide-generating reactions.
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Affiliation(s)
- Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yi Chiao Fan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
| | - Zhanhu Sun
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
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14
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Xing JJ, Gao YN, Shi M. Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and p
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiao-Jiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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15
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Zhang K, Cai L, Yang Z, Houk KN, Kwon O. Bridged [2.2.1] bicyclic phosphine oxide facilitates catalytic γ-umpolung addition-Wittig olefination. Chem Sci 2018; 9:1867-1872. [PMID: 29732112 PMCID: PMC5909331 DOI: 10.1039/c7sc04381c] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/02/2018] [Indexed: 12/13/2022] Open
Abstract
A novel bridged [2.2.1] bicyclic phosphine oxide, devised to circumvent the waste generation and burdens of purification that are typical of reactions driven by the generation of phosphine oxides, has been prepared in three steps from commercially available cyclopent-3-ene-1-carboxylic acid. The performance of this novel phosphine oxide was superior to those of current best-in-class counterparts, as verified experimentally through kinetic analysis of its silane-mediated reduction. It has been applied successfully in halide-/base-free catalytic γ-umpolung addition-Wittig olefinations of allenoates and 2-amidobenzaldehydes to produce 1,2-dihydroquinolines with good efficiency. One of the 1,2-dihydroquinoline products was converted to known antitubercular furanoquinolines.
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Affiliation(s)
- Kui Zhang
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - Lingchao Cai
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - Zhongyue Yang
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - K N Houk
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
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16
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Chang MY, Chen HY, Chen YH. Synthesis of 2-Aryl-3-sulfonylchromans via Knoevenagel Condensation and Reduction Protocol. J Org Chem 2017; 82:12631-12639. [DOI: 10.1021/acs.joc.7b02392] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied
Chemistry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Han-Yu Chen
- Department of Medicinal and Applied
Chemistry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yu-Hsin Chen
- Department of Medicinal and Applied
Chemistry, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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17
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Xing J, Lei Y, Gao YN, Shi M. PPh 3-Catalyzed [3 + 2] Spiroannulation of 1C,3N-Bisnucleophiles Derived from Secondary β-Ketoamides with δ-Acetoxy Allenoate: A Route to Functionalized Spiro N-Heterocyclic Derivatives. Org Lett 2017; 19:2382-2385. [PMID: 28443669 DOI: 10.1021/acs.orglett.7b00910] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A [3 + 2] annulation of α-substituted secondary β-ketoamides with δ-acetoxy-modified allenoate has been developed in the presence of phosphine catalyst. In this spiroannulation reaction, β-ketoamides were used as the bis-nucleophilic partner while the γ,δ-carbon of 5-acetoxypenta-2,3-dienoate participated as a C2 synthon, affording the desired functionalized five-membered N-heterocyclic derivatives in moderate to excellent yields and diastereoselectivities under mild conditions. Preliminary attempts on the asymmetric variant of this reaction have been also examined, giving the corresponding products with moderate ee values.
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Affiliation(s)
- Jiaojiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China
| | - Yu Lei
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology , 130 Mei Long Road, Shanghai 200237, People's Republic of China.,State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University , Tianjin 300071, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 354 Fenglin Lu, Shanghai 200032, People's Republic of China
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18
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Chang M, Wu C, Zheng J, Huang Y. One-Pot Synthesis of Polysubstituted Benzenes through aN,N-dimethyl-4-aminopyridine (DMAP)-Catalyzed [4+2] Benzannulation of 1,3-Bis(sulfonyl)butadienes and γ-Substituted Allenoates. Chem Asian J 2016; 11:1512-7. [DOI: 10.1002/asia.201600102] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Meijia Chang
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
| | - Chengzhou Wu
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
| | - Jie Zheng
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
| | - You Huang
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
- Collabortive Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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19
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Zhou R, He Z. Advances in Annulation Reactions Initiated by Phosphorus Ylides Generated in situ. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501585] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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20
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Zhang K, Cai L, Jiang X, Garcia-Garibay MA, Kwon O. Phosphine-Mediated Iterative Arene Homologation Using Allenes. J Am Chem Soc 2015; 137:11258-61. [PMID: 26295504 PMCID: PMC4915745 DOI: 10.1021/jacs.5b07403] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A PPh3-mediated multicomponent reaction between o-phthalaldehydes, nucleophiles, and monosubstituted allenes furnishes functionalized non-C2-symmetric naphthalenes in synthetically useful yields. When the o-phthalaldehydes were reacted with 1,3-disubstituted allenes in the presence of PPh2Et, naphthalene derivatives were also obtained in up to quantitative yields. The mechanism of the latter transformation is straightforward: aldol addition followed by Wittig olefination and dehydration. The mechanism of the former is a tandem γ-umpolung/aldol/Wittig/dehydration process, as established by preparation of putative reaction intermediates and mass spectrometric analysis. This transformation can be applied iteratively to prepare anthracenes and tetracenes using carboxylic acids as pronucleophiles.
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Affiliation(s)
- Kui Zhang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Lingchao Cai
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Xing Jiang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Miguel A. Garcia-Garibay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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21
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Li E, Huang Y. Phosphine-Catalyzed Domino Reactions: A Route to Functionalized Bicyclic Skeletons. Chemistry 2014; 20:3520-7. [DOI: 10.1002/chem.201304003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Indexed: 11/09/2022]
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22
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Zhou R, Duan C, Yang C, He Z. Phosphane-Catalyzed [4+1] Annulation between Nitroalkenes and Morita-Baylis-Hillman Carbonates: Facile Synthesis of IsoxazolineN-Oxides by Phosphorus Ylides. Chem Asian J 2014; 9:1183-9. [DOI: 10.1002/asia.201301633] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Indexed: 12/31/2022]
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23
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Stoddard RL, Luo J, van der Wal N, O'Rourke NF, Wulff JE, McIndoe JS. A multi-pronged mechanistic study of the phosphine-mediated conjugate addition of an alcohol to an acetylenic ester. NEW J CHEM 2014. [DOI: 10.1039/c4nj01070a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The conjugate addition of an alcohol to a butynoate ester using an organophosphine catalyst was monitored using pressurized sample infusion electrospray ionization mass spectrometry (PSI-ESI-MS), together with 31P and 1H NMR spectroscopy.
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Affiliation(s)
| | - Jingwei Luo
- Department of Chemistry
- University of Victoria
- Victoria, Canada
| | | | | | - Jeremy E. Wulff
- Department of Chemistry
- University of Victoria
- Victoria, Canada
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24
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Li E, Huang Y. Phosphine-catalyzed domino reaction: a novel sequential [2+3] and [3+2] annulation reaction of γ-substituent allenoates to construct bicyclic[3, 3, 0]octene derivatives. Chem Commun (Camb) 2014; 50:948-50. [DOI: 10.1039/c3cc47716a] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Fan YC, Kwon O. Advances in nucleophilic phosphine catalysis of alkenes, allenes, alkynes, and MBHADs. Chem Commun (Camb) 2013; 49:11588-619. [PMID: 24196409 PMCID: PMC3896345 DOI: 10.1039/c3cc47368f] [Citation(s) in RCA: 348] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In nucleophilic phosphine catalysis, tertiary phosphines undergo conjugate additions to activated carbon-carbon multiple bonds to form β-phosphonium enolates, β-phosphonium dienolates, β-phosphonium enoates, and vinyl phosphonium ylides as intermediates. When these reactive zwitterionic species react with nucleophiles and electrophiles, they may generate carbo- and heterocycles with multifarious molecular architectures. This article describes the reactivities of these phosphonium zwitterions, the applications of phosphine catalysis in the syntheses of biologically active compounds and natural products, and recent developments in the enantioselective phosphine catalysis.
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Affiliation(s)
- Yi Chiao Fan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, USA.
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26
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Rama Suresh R, Prasad Tulichala RN, Kotikalapudi R, Kumara Swamy KC. P(n-Bu)3Catalyzed Reactions of SalicylN-Thiophosphinyl Imines with Allenylphosphonates: Synthesis of Phosphono-Chromans. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.2071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- R. Rama Suresh
- School of Chemistry; University of Hyderabad; Hyderabad 500 046 Andhra Pradesh India
| | | | - Ramesh Kotikalapudi
- School of Chemistry; University of Hyderabad; Hyderabad 500 046 Andhra Pradesh India
| | - K. C. Kumara Swamy
- School of Chemistry; University of Hyderabad; Hyderabad 500 046 Andhra Pradesh India
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27
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Qin Z, Ma R, Xu S, He Z. Phosphine-catalyzed formal vinylogous aldol reaction of γ-methyl allenoates with aldehydes: easy access to 1,3-dioxanes and dienols. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.091] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Zheng J, Huang Y, Li Z. Phosphine-Catalyzed Domino Reaction: An Efficient Method for the Synthesis of Bicyclo[3.2.0]heptenes Skeleton. Org Lett 2013; 15:5758-61. [DOI: 10.1021/ol402799w] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jie Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Zhengming Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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29
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Xiao H, Chai Z, Yao RS, Zhao G. Phosphine Catalyst-Controlled Cycloaddition or Dienylation Reactions of Trifluoromethyl Aryl Ketones with Bis-Substituted Allenoates. J Org Chem 2013; 78:9781-90. [DOI: 10.1021/jo401462c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hua Xiao
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School
of Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Zhuo Chai
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Ri-Sheng Yao
- School
of Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Gang Zhao
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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30
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Zheng J, Huang Y, Li Z. Phosphine-Catalyzed Domino Benzannulation: An Efficient Method to Construct Biaryl Skeletons. Org Lett 2013; 15:5064-7. [DOI: 10.1021/ol4022904] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jie Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Zhengming Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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31
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Li E, Huang Y, Liang L, Xie P. Phosphine-Catalyzed [4 + 2] Annulation of γ-Substituent Allenoates: Facile Access to Functionalized Spirocyclic Skeletons. Org Lett 2013; 15:3138-41. [DOI: 10.1021/ol401249e] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Erqing Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Ling Liang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Peizhong Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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32
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Jose A, Seetha Lakshmi KC, Suresh E, Nair V. Phosphine-Mediated Reaction of 3-Alkyl Allenoates and Diaryl 1,2-Diones: Efficient Diastereoselective Synthesis of Fully Substituted Cyclopentenones. Org Lett 2013; 15:1858-61. [DOI: 10.1021/ol400467v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anu Jose
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Thiruvananthapuram, India, and Analytical Science Division, Central Salt and Marine Chemicals Research Institute, Bhavnagar, 364002, India
| | - K. C. Seetha Lakshmi
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Thiruvananthapuram, India, and Analytical Science Division, Central Salt and Marine Chemicals Research Institute, Bhavnagar, 364002, India
| | - Eringathodi Suresh
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Thiruvananthapuram, India, and Analytical Science Division, Central Salt and Marine Chemicals Research Institute, Bhavnagar, 364002, India
| | - Vijay Nair
- Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Thiruvananthapuram, India, and Analytical Science Division, Central Salt and Marine Chemicals Research Institute, Bhavnagar, 364002, India
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33
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Selig P, Turočkin A, Raven W. Guanidine-Catalyzed Triple Functionalization of γ-Substituted Allenoates with Aldehydes by a Four-Step Reaction Cascade. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200807] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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34
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Selig P, Turočkin A, Raven W. Synthesis of highly substituted oxetanes via [2+2] cycloaddition reactions of allenoates catalyzed by a guanidine Lewis base. Chem Commun (Camb) 2013; 49:2930-2. [DOI: 10.1039/c3cc40855h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Xu S, He Z. Recent advances in stoichiometric phosphine-mediated organic synthetic reactions. RSC Adv 2013. [DOI: 10.1039/c3ra42088d] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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36
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Zhao H, Meng X, Huang Y. One step synthesis of benzoxazepine derivatives via a PPh3 catalyzed aza-MBH domino reaction between salicyl N-tosylimines and allenoates. Chem Commun (Camb) 2013; 49:10513-5. [DOI: 10.1039/c3cc46379f] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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37
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Wang J, Zhou R, He ZR, He Z. Phosphane-Mediated Domino Synthesis of Tetrasubstituted Furans from Simple Terminal Activated Olefins. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200945] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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38
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Jing C, Na R, Wang B, Liu H, Zhang L, Liu J, Wang M, Zhong J, Kwon O, Guo H. Phosphine-Catalyzed [3+2] and [4+3]Annulation Reactions of C,N-Cyclic Azomethine Imines with Allenoates. Adv Synth Catal 2012; 354:1023-1034. [PMID: 25525424 DOI: 10.1002/adsc.201100831] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Phosphine-catalyzed [3+2] and [4+3]annulation reactions of C,N-cyclic azomethine imines with allenoates have been developed to give a variety of pharmaceutically attractive tetrahydroisoquinoline derivatives in moderate to excellent yields. The two distinct reaction pathways, [3+2] and [4+3]cyclization, depend on the nature of the nucleophilic phosphine and the allenoate. Generally, for α-alkylallenoates, the reactions always proceed with [3 +2]cyclization as the major pathway no matter what phosphine was used; for α-ArCH2-substituted allenoates, the reaction pathway was controlled by the phosphine catalyst used.
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Affiliation(s)
- Chengfeng Jing
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Risong Na
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Bo Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Honglei Liu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Lei Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Jun Liu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356 ; Chemical Industry Press, 13 Qingnianhu South St., Beijing 100011, People's Republic of China
| | - Min Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Jiangchun Zhong
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, USA
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China, ; phone: (+86)-10-62731356
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39
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De Paolis M, Chataigner I, Maddaluno J. Recent advances in stereoselective synthesis of 1,3-dienes. Top Curr Chem (Cham) 2012; 327:87-146. [PMID: 22527407 DOI: 10.1007/128_2012_320] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The aim of this review is to present the latest developments in the stereoselective synthesis of conjugated dienes, covering the period 2005-2010. Since the use of this class of compounds is linked to the nature of their appendages (aryls, alkyls, electron-withdrawing, and heterosubstituted groups), the review has been categorized accordingly and illustrates the most representative strategies and mechanisms to access these targets.
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40
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Jacobsen MJ, Funder ED, Cramer JR, Gothelf KV. β-Olefination of 2-alkynoates leading to trisubstituted 1,3-dienes. Org Lett 2011; 13:3418-21. [PMID: 21648453 DOI: 10.1021/ol2011677] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A phosphine-mediated olefination of 2-alkynoates with aldehydes forming 1,3-dienes with high E-selectivity and up to 88% yield is described. Reaction conditions are optimized and reactions are demonstrated for various aryl, alkyl, and alkenyl aldehydes and for ethyl 2-alkynoates with different substituents in the δ-position. Proof of concept is shown for the generation of a β,γ-unsaturated lactone by intramolecular olefination, and furthermore the use of the generated 1,3-dienes in the Diels-Alder reaction has been demonstrated.
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Affiliation(s)
- Mathias J Jacobsen
- Danish National Research Foundation: Centre for DNA Nanotechnology (CDNA) at Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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