1
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Niu L, Guo H, Jia F, Shen J, Wang Y, Hu X. DNDMH-mediated direct nitration of aryl alkenes. Chem Commun (Camb) 2024; 60:3202-3204. [PMID: 38415740 DOI: 10.1039/d3cc06275a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
N-nitro type reagents have been demonstrated as mild nitration tools in recent years. This work presents an exploration of direct nitration of aryl alkenes mediated by DNDMH, a novel N-nitro type reagent developed in our previous study. It exhibits herein a new property of DNDMH as an effective direct nitration reagent for aryl alkenes, through probably the delivery of nitro radicals with the aid of TEMPO and Cu(OAc)2.
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Affiliation(s)
| | - Hao Guo
- Northwest University, Xi'an, China.
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2
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Abdelkawy MA, Davin C, Aly EA, El‐Badawi MA, Itsuno S. Chiral Polyureas Derived Cinchona Alkaloids: Highly Efficient Bifunctional Organocatalysts for the Asymmetric Michael Addition Reaction. ChemistrySelect 2021. [DOI: 10.1002/slct.202103217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mahmoud A. Abdelkawy
- Department of Applied Chemistry & Life Science Toyohashi University of Technology Toyohashi 441-8580 Japan
- Chemistry Department Faculty of Science Tanta University Tanta 31527 Egypt
| | - Christopher Davin
- Department of Applied Chemistry & Life Science Toyohashi University of Technology Toyohashi 441-8580 Japan
| | - El‐Saied A. Aly
- Chemistry Department Faculty of Science Tanta University Tanta 31527 Egypt
| | | | - Shinichi Itsuno
- Department of Applied Chemistry & Life Science Toyohashi University of Technology Toyohashi 441-8580 Japan
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3
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Jin PR, Ta YNN, Chen IT, Yu YN, Hsieh HT, Nguyen VAT, Hsieh SY, Hsia T, Liu H, Hsu CW, Han JL, Chen Y. Cinchona Alkaloid-Inspired Urea-Containing Autophagy Inhibitor Shows Single-Agent Anticancer Efficacy. J Med Chem 2021; 64:14513-14525. [PMID: 34558909 DOI: 10.1021/acs.jmedchem.1c01036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Autophagy is upregulated in response to metabolic stress, a hypoxic tumor microenvironment, and therapeutic stress in various cancers and mediates tumor progression and resistance to cancer therapy. Herein, we identified a cinchona alkaloid derivative containing urea (C1), which exhibited potential cytotoxicity and inhibited autophagy in hepatocellular carcinoma (HCC) cells. We showed that C1 not only induced apoptosis but also blocked autophagy in HCC cells, as indicated by the increased expression of LC3-II and p62, inhibition of autophagosome-lysosome fusion, and suppression of the Akt/mTOR/S6k pathway in the HCC cells. Finally, to improve its solubility and efficacy, we encapsulated C1 into PEGylated lipid-poly(lactic-co-glycolic acid) (PLGA) nanoscale drug carriers. Systemic administration of nanoscale C1 significantly suppressed primary tumor growth and prevented distant metastasis while maintaining a desirable safety profile. Our findings demonstrate that C1 combines autophagy modulation and apoptosis induction in a single molecule, making it a promising therapeutic option for HCC.
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Affiliation(s)
- Pei-Ru Jin
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yen-Nhi Ngoc Ta
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - I-Ting Chen
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South District, Taichung City 40227, Taiwan
| | - Yan-Ning Yu
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hsin Tzu Hsieh
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Van-Anh Thi Nguyen
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shang-Ying Hsieh
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Tiffaney Hsia
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan.,Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Hao Liu
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, United States
| | - Chan-Wei Hsu
- Department of Chemistry, Chung Yuan Christian University, Taoyuan City 320314, Taiwan
| | - Jeng-Liang Han
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South District, Taichung City 40227, Taiwan.,Department of Chemistry, Chung Yuan Christian University, Taoyuan City 320314, Taiwan
| | - Yunching Chen
- Institute of Biomedical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
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4
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Paul N, Maity S, Panja S, Maiti D. Recent Advances in the Nitration of Olefins. CHEM REC 2021; 21:2896-2908. [PMID: 34569706 DOI: 10.1002/tcr.202100217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/07/2021] [Indexed: 12/24/2022]
Abstract
Nitroolefins are important synthetic intermediates in the field of organic synthesis as well as in medicinal chemistry. The high reactivity of nitroalkenes due to the polarized double bond which enables them to act as Michael acceptor in conjugate addition reactions, or as a dienophile in cycloaddition makes it an essential synthetic handle for accessing complex molecules. The classical method to prepare nitroolefins is indeed the Henry nitroaldol reaction, where a carbonyl compound and nitroalkane are condensed in presence of base. Direct nitration of olefin, on the other hand, serves as a useful alternative as olefins are abundant, have broad commercial availability and easy to manipulate. In this context, numerous methods have been developed over the last few decades, focusing on direct nitration of styrene and aliphatic olefins. Furthermore, thorough literature search revealed that implementation of this class of reactions are gaining momentum as a preferred pathway to access nitroolefins, despite the presence of a powerful technique such as Henry reaction. In this review, we aim to cover recent advances in direct olefin nitration and their importance in accessing biorelevant molecules, total synthesis targets and future outlook in this specific research area.
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Affiliation(s)
- Nilanjan Paul
- IIT Hyderabad, Department of Chemistry Kandi, 502285, Telangana, India
| | - Soham Maity
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, Mumbai, India
| | - Subir Panja
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, Mumbai, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, Mumbai, India
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5
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Maestro A, del Corte X, López-Francés A, Martínez de Marigorta E, Palacios F, Vicario J. Asymmetric Synthesis of Tetrasubstituted α-Aminophosphonic Acid Derivatives. Molecules 2021; 26:3202. [PMID: 34071844 PMCID: PMC8199250 DOI: 10.3390/molecules26113202] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/22/2021] [Accepted: 05/24/2021] [Indexed: 11/16/2022] Open
Abstract
Due to their structural similarity with natural α-amino acids, α-aminophosphonic acid derivatives are known biologically active molecules. In view of the relevance of tetrasubstituted carbons in nature and medicine and the strong dependence of the biological activity of chiral molecules into their absolute configuration, the synthesis of α-aminophosphonates bearing tetrasubstituted carbons in an asymmetric fashion has grown in interest in the past few decades. In the following lines, the existing literatures for the synthesis of optically active tetrasubstituted α-aminophosphonates are summarized, comprising diastereoselective and enantioselective approaches.
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Affiliation(s)
- Aitor Maestro
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”-Facultad de Farmacia, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (A.M.); (X.d.C.); (A.L.-F.); (E.M.d.M.)
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Xabier del Corte
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”-Facultad de Farmacia, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (A.M.); (X.d.C.); (A.L.-F.); (E.M.d.M.)
| | - Adrián López-Francés
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”-Facultad de Farmacia, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (A.M.); (X.d.C.); (A.L.-F.); (E.M.d.M.)
| | - Edorta Martínez de Marigorta
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”-Facultad de Farmacia, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (A.M.); (X.d.C.); (A.L.-F.); (E.M.d.M.)
| | - Francisco Palacios
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”-Facultad de Farmacia, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (A.M.); (X.d.C.); (A.L.-F.); (E.M.d.M.)
| | - Javier Vicario
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”-Facultad de Farmacia, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (A.M.); (X.d.C.); (A.L.-F.); (E.M.d.M.)
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6
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Abdelkawy MA, Aly EA, El‐Badawi MA, Itsuno S. Synthesis of Cinchona Urea Polymers and Their Evaluation as Catalyst in the Asymmetric Reactions. ChemistrySelect 2020. [DOI: 10.1002/slct.202001436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mahmoud A. Abdelkawy
- Department of Applied Chemistry & Life ScienceToyohashi University of Technology Toyohashi 441-8580 Japan
- Chemistry DepartmentFaculty of ScienceTanta University Tanta 31527 Egypt
| | - El‐Saied A. Aly
- Chemistry DepartmentFaculty of ScienceTanta University Tanta 31527 Egypt
| | | | - Shinichi Itsuno
- Department of Applied Chemistry & Life ScienceToyohashi University of Technology Toyohashi 441-8580 Japan
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7
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ADMET Polymerization of Dimeric Cinchona Squaramides for the Preparation of a Highly Enantioselective Polymeric Organocatalyst. Catalysts 2020. [DOI: 10.3390/catal10050591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Under the acyclic diene metathesis (ADMET) reaction condition, the C3-vinyl groups of cinchona alkaloids readily react with each other to form a C-C bond. A novel type of cinchona alkaloid polymers was synthesized from dimeric cinchona squaramides using the Hoveyda-Grubbs’ second-generation catalysts (HG2) by means of ADMET reaction. The chiral polymers, containing cinchona squaramide moieties in their main chains, were subsequently employed as catalysts for the enantioselective Michael reaction to give the corresponding chiral adducts in high yields with excellent enantioselectivity and diastereoselectivity. Both enantiomers from the asymmetric Michael reaction were distinctively prepared while using the polymeric catalysts, possessing pseudoenantiomeric structures. The catalysts were readily recovered from the reaction mixture and recycled several times due to the insolubility of the cinchona-based squaramide polymers.
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8
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Li QH, Zhang GS, Wang YH, Mei MS, Wang X, Liu Q, Yang XD, Tian P, Lin GQ. A novel chiral DMAP–thiourea bifunctional catalyst catalyzed enantioselective Steglich and Black rearrangement reactions. Org Chem Front 2019. [DOI: 10.1039/c9qo00691e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel chiral DMAP–thiourea bifunctional catalyst has been prepared and applied in the highly enantioselective Steglich and Black rearrangement reactions.
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Affiliation(s)
- Qing-Hua Li
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Gui-Shan Zhang
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Yu-Hui Wang
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Ming-Shun Mei
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Xin Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Qiang Liu
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Xiao-Di Yang
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Ping Tian
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
| | - Guo-Qiang Lin
- The Research Center of Chiral Drugs
- Innovation Research Institute of Traditional Chinese Medicine
- Shanghai University of Traditional Chinese Medicine
- Shanghai 201203
- China
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9
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Sun J, Mou C, Wang Z, He F, Wu J, Chi YR. Carbene-Catalyzed [4 + 2] Cycloadditions of Vinyl Enolate and (in Situ Generated) Imines for Enantioselective Synthesis of Quaternary α-Amino Phosphonates. Org Lett 2018; 20:5969-5972. [PMID: 30211562 DOI: 10.1021/acs.orglett.8b02707] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A carbene-catalyzed enantioselective addition of enals to five-membered cyclic imines is developed. The reaction gives chiral quaternary α-amino phosphonates bearing tetrasubstituted carbon centers with excellent enantioselectivities. The imine substrates can be generated in situ from the corresponding amines under an oxidative condition that is compatible with the carbene catalysis. Thus, a one-pot cross-dehydrogenative-coupling (CDC) reaction between enals and amines is also realized with high enantioselectivity remaining. The method provides quick enantioselective access to amino phosphonates with potential applications in medicines and pesticides.
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Affiliation(s)
- Jun Sun
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District , Guiyang 550025 , China
| | - Chengli Mou
- School of Pharmacy , Guiyang College of Traditional Chinese Medicine , Huaxi District , Guiyang 550025 , China
| | - Zhongyao Wang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District , Guiyang 550025 , China
| | - Fangcheng He
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District , Guiyang 550025 , China
| | - Jian Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District , Guiyang 550025 , China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education , Guizhou University , Huaxi District , Guiyang 550025 , China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
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10
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Rana NK, Shukla K, Mahto P, Jha RK, Singh VK. A facile and highly diastereoselective synthesis of carbocyclic spiro-pyrazolones via DABCO catalyzed Michael-Michael domino reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Ertugrul B, Kilic H, Lafzi F, Saracoglu N. Access to C5-Alkylated Indolines/Indoles via Michael-Type Friedel-Crafts Alkylation Using Aryl-Nitroolefins. J Org Chem 2018; 83:9018-9038. [PMID: 29916712 DOI: 10.1021/acs.joc.8b00973] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A straightforward synthetic route toward C5-alkylated indolines/indoles has been developed. The strategy is composed of Zn(OTf)2-catalyzed Friedel-Crafts alkylation of N-benzylindolines with nitroolefins, and a series of diverse indolines was first obtained in up to 99% yield. This reaction provides a direct and practical route to a variety of the C5-alkylated indolines which were also utilized for accessing corresponding indoles. Indoline derivatives with free NH groups could be obtained through an N-deprotection reaction. Moreover, the primary alkyl nitro groups in both indolines and indoles are amenable to further synthetic elaborations, thereby broadening the diversity of the products.
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12
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Mondal B, Maity R, Pan SC. Highly Diastereo- and Enantioselective Synthesis of Spiro-tetrahydrofuran-pyrazolones via Organocatalytic Cascade Reaction between γ-Hydroxyenones and Unsaturated Pyrazolones. J Org Chem 2018; 83:8645-8654. [DOI: 10.1021/acs.joc.8b00781] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Buddhadeb Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Rajendra Maity
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
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13
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Ullah M, Itsuno S. Cinchona Squaramide-Based Chiral Polymers as Highly Efficient Catalysts in Asymmetric Michael Addition Reaction. ACS OMEGA 2018; 3:4573-4582. [PMID: 31458680 PMCID: PMC6641636 DOI: 10.1021/acsomega.8b00398] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 04/18/2018] [Indexed: 05/03/2023]
Abstract
We have synthesized novel chiral polymers containing a cinchona-based squaramide in the main chain. We designed a novel cinchona squaramide dimer that contains two cinchona squaramide units connected by diamines. The olefinic double bonds in the cinchona squaramide dimer were used for Mizoroki-Heck (MH) polymerization with aromatic diiodides. The MH polymerization of the cinchona squaramide dimer and aromatic diiodide proceeded well to give the corresponding chiral polymers in good yields. The catalytic activity of the chiral polymers was investigated for asymmetric Michael addition reactions. The effect of the squaramide structure of the polymeric catalyst on the catalytic performance is discussed in detail. We have surveyed the influence of the chiral polymer structure on the catalytic activity and enantioselectivity of the asymmetric reaction. The asymmetric Michael addition of β-ketoesters to nitroolefins was successfully catalyzed by polymeric cinchona squaramide organocatalysts to obtain the corresponding Michael adducts in good yields with excellent enantio- and diastereoselectivities. The polymeric catalysts were insoluble in commonly used organic solvents and easily recovered from the reaction mixture and reused several times without the loss of catalytic activity.
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14
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Sun J, Mou C, Liu C, Huang R, Zhang S, Zheng P, Chi YR. Enantioselective access to multi-cyclic α-amino phosphonates via carbene-catalyzed cycloaddition reactions between enals and six-membered cyclic imines. Org Chem Front 2018. [DOI: 10.1039/c8qo00877a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A carbene-catalyzed enantioselective [4 + 2] cycloaddition reaction is developed and quarternary α-amino phosphonates are afforded with encouraging anti-bacterial activities.
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Affiliation(s)
- Jun Sun
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education
- Guizhou University
- Guiyang 550025
- China
| | - Chengli Mou
- School of Pharmacy
- Guiyang College of Traditional Chinese Medicine
- Guiyang 550025
- China
| | - Changyi Liu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education
- Guizhou University
- Guiyang 550025
- China
| | - Ruoyan Huang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education
- Guizhou University
- Guiyang 550025
- China
| | - Shupeng Zhang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education
- Guizhou University
- Guiyang 550025
- China
| | - Pengcheng Zheng
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education
- Guizhou University
- Guiyang 550025
- China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education
- Guizhou University
- Guiyang 550025
- China
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15
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Endo Y, Takata S, Kumpuga BT, Itsuno S. Synthesis of Cinchona Alkaloid Sulfonamide Polymers as Enantioselective Catalysts for the Michael Addition Reaction of β-Ketoester and Nitrostyrene. ChemistrySelect 2017. [DOI: 10.1002/slct.201702010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuta Endo
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
| | - Shohei Takata
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
| | - Bahati Thom Kumpuga
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
| | - Shinichi Itsuno
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
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16
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Mukhopadhyay S, Nath U, Pan SC. Organocatalytic Asymmetric Synthesis of 3,3-Disubstituted 3,4-Dihydro-2-quinolones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700655] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Utpal Nath
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam India 781039
| | - Subhas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam India 781039
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17
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Roshandel S, Gurung L, Mathew T, Prakash GS. Chloro/bromotrimethylsilane-Cu(NO 3 ) 2 ·3H 2 O: Safe and efficient reagent system for the decarboxylative ipso -nitration and dibromination of cinnamic acids. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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Nath U, Pan SC. Organocatalytic Asymmetric Tamura Cycloaddition with α- Branched Nitroolefins: Synthesis of Functionalized 1-Tetralones. J Org Chem 2017; 82:3262-3269. [PMID: 28226211 DOI: 10.1021/acs.joc.6b03020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new catalytic asymmetric Tamura cycloaddition with nitroolefins was developed. This demonstration of the reaction of α-branched nitroolefins with homophthalic anhydrides delivers highly functionalized 1-tetralone compounds. With bifunctional squaramide catalyst, the desired tetralone products are obtained with high enantioselectivity and good diastereoselectivity.
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Affiliation(s)
- Utpal Nath
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
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19
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Zhang N, Quan ZJ, Wang XC. Nickel-Catalyzed Denitrated Coupling Reaction of Nitroalkenes with Aliphatic and Aromatic Alkenes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600586] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Na Zhang
- College of Chemistry and Chemical Engineering; Northwest Normal University, Lanzhou; Gansu 730070 People's Republic of China
| | - Zheng-Jun Quan
- College of Chemistry and Chemical Engineering; Northwest Normal University, Lanzhou; Gansu 730070 People's Republic of China
| | - Xi-Cun Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University, Lanzhou; Gansu 730070 People's Republic of China
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20
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Ray Choudhury A, Mukherjee S. Enantioselective dearomatization of isoquinolines by anion-binding catalysis en route to cyclic α-aminophosphonates. Chem Sci 2016. [PMID: 28626550 PMCID: PMC5465551 DOI: 10.1039/c6sc02466a] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
An enantioselective dearomatization of isoquinolines has been developed using chiral anion-binding catalysis. This transformation makes use of silyl phosphite as a nucleophile and generates cyclic α-aminophosphonates.
An enantioselective dearomatization of isoquinolines has been developed using chiral anion-binding catalysis. This transformation, catalyzed by a simple and easy to prepare tert-leucine-based thiourea derivative, makes use of silyl phosphite as a nucleophile and generates cyclic α-aminophosphonates. This is the first time asymmetric anion-binding catalysis has been applied to the synthesis of α-aminophosphonates.
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Affiliation(s)
- Abhijnan Ray Choudhury
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
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21
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Luo ZG, Xu F, Fang YY, Liu P, Xu XM, Feng CT, Li Z, He J. Cu(NO3)2-catalyzed nitrodecarboxylation of α,β-unsaturated acids: facile synthesis of (E)-nitroolefins under additive-free conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2446-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Takata S, Endo Y, Shahid Ullah M, Itsuno S. Synthesis of cinchona alkaloid sulfonamide polymers as sustainable catalysts for the enantioselective desymmetrization of cyclic anhydrides. RSC Adv 2016. [DOI: 10.1039/c6ra14535c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mizoroki–Heck polymerization of cinchona sulfonamide gave chiral polymers, which are active catalysts for enantioselective desymmetrization of cyclic anhydrides to give chiral hemiesters in high yield with high enantioselectivities.
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Affiliation(s)
- Shohei Takata
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Yuta Endo
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Mohammad Shahid Ullah
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Shinichi Itsuno
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
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23
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Poomathi N, Perumal PT. Cinchona alkaloid and di-tert-butyldicarbonate–DMAP promoted efficient synthesis of (E)-nitroolefins. RSC Adv 2016. [DOI: 10.1039/c6ra06644e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and efficient metal-free methodology for the synthesis of β-nitroolefins has been developed from arylidinemalononitrile using bifunctional cinchona alkaloid along with di-tert-butyldicarbonate–DMAP in high yields with total selectivity.
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Affiliation(s)
- Nataraj Poomathi
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai-600020
- India
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24
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Kayal S, Mukherjee S. Catalytic Aldol–Cyclization Cascade of 3-Isothiocyanato Oxindoles with α-Ketophosphonates for the Enantioselective Synthesis of β-Amino-α-hydroxyphosphonates. Org Lett 2015; 17:5508-11. [DOI: 10.1021/acs.orglett.5b02929] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Satavisha Kayal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore - 560012, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore - 560012, India
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25
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Ordóñez M, Viveros-Ceballos JL, Cativiela C, Sayago FJ. An update on the stereoselective synthesis of α-aminophosphonic acids and derivatives. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.01.029] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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26
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Bera K, Namboothiri INN. Quinine-derived thiourea and squaramide catalyzed conjugate addition of α-nitrophosphonates to enones: asymmetric synthesis of quaternary α-aminophosphonates. J Org Chem 2015; 80:1402-13. [PMID: 25569800 DOI: 10.1021/jo502332r] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Conjugate addition of α-nitrophosphonates to enones was carried out in the presence of two sets of organocatalysts, viz. a quinine-thiourea and a quinine-squaramide. The quinine-thiourea provided the products possessing an α-quaternary chiral center in high enantioselectivities only in the case of electron rich enones. On the other hand, the quinine-squaramide was more efficient in that a wide variety of electron rich and electron poor enones underwent Michael addition of nitrophosphonates to afford the quaternary α-nitrophosphonates in excellent yields and enantioselectivities. The hydrogen bonding donor ability of the bifunctional catalyst, as shown in the proposed transition states, appears primarily responsible for the observed selectivity. However, a favorable π-stacking between the aryl groups of thiourea/squaramide and aryl vinyl ketone also appeared favorable. The reaction was amenable to scale up, and the enantioenriched quaternary α-nitrophosphonates could be easily transformed to synthetically and biologically useful quaternary α-aminophosphonates and other multifunctional molecules.
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Affiliation(s)
- Kalisankar Bera
- Department of Chemistry, Indian Institute of Technology Bombay , Mumbai 400 076, India
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27
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Kowalczyk D, Albrecht Ł. An organocatalytic biomimetic approach to α-aminophosphonates. Chem Commun (Camb) 2015; 51:3981-4. [DOI: 10.1039/c4cc09477h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A novel biomimetic approach to optically active α-aminophosphonates from readily available acylphosphonates employing chiral base catalysis.
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Affiliation(s)
- Dorota Kowalczyk
- Institute of Organic Chemistry
- Chemistry Department
- Lodz University of Technology
- 90-924 Łódź
- Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry
- Chemistry Department
- Lodz University of Technology
- 90-924 Łódź
- Poland
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28
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Dzięgielewski M, Pięta J, Kamińska E, Albrecht Ł. Organocatalytic Synthesis of Optically Active Organophosphorus Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403184] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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29
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Bera K, Namboothiri INN. Asymmetric Synthesis of Quaternary α-Amino Acids and Their Phosphonate Analogues. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402178] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Cinchona-derived thiourea catalyzed hydrophosphonylation of ketimines—an enantioselective synthesis of α-amino phosphonates. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Asymmetric catalysis as a method for the synthesis of chiral organophosphorus compounds. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.05.010] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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32
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A highly regio- and enantioselective organocatalyzed Michael addition of malonates to nitrodienes. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.02.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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33
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Chen XY, Xia F, Ye S. Catalytic MBH reaction of β-substituted nitroalkenes with azodicarboxylates. Org Biomol Chem 2014; 11:5722-6. [PMID: 23884292 DOI: 10.1039/c3ob40804c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented N-heterocyclic carbene (NHC) catalyzed Morita-Baylis-Hillman (MBH) reaction of β-substituted nitroalkenes and azodicarboxylates has been developed. Both β-aryl and β-alkyl nitroalkenes worked well for the reaction using 5 mol% of NHC catalyst, giving the desired α-hydrazino-α,β-unsaturated nitroalkenes in good to excellent yields.
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Affiliation(s)
- Xiang-Yu Chen
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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34
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Dhakal RC, Dieter RK. Regioselective 1,4-Conjugate Addition of Grignard Reagents to Nitrodienes in the Presence of Catalytic Amounts of Zn(II) Salts. Org Lett 2014; 16:1362-5. [DOI: 10.1021/ol500114m] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ramesh C. Dhakal
- Hunter
Laboratory, Department
of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - R. Karl Dieter
- Hunter
Laboratory, Department
of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
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35
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Cao YM, Shen FF, Zhang FT, Zhang JL, Wang R. Catalytic asymmetric 1,2-addition of α-isothiocyanato phosphonates: synthesis of chiral β-hydroxy- or β-amino-substituted α-amino phosphonic acid derivatives. Angew Chem Int Ed Engl 2014; 53:1862-6. [PMID: 24420101 DOI: 10.1002/anie.201308514] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 10/30/2013] [Indexed: 11/08/2022]
Abstract
α-Amino phosphonic acid derivatives are considered to be the most important structural analogues of α-amino acids and have a very wide range of applications. However, approaches for the catalytic asymmetric synthesis of such useful compounds are very limited. In this work, simple, efficient, and versatile organocatalytic asymmetric 1,2-addition reactions of α-isothiocyanato phosphonate were developed. Through these processes, derivatives of β-hydroxy-α-amino phosphonic acid and α,β-diamino phosphonic acid, as well as highly functionalized phosphonate-substituted spirooxindole, can be efficiently constructed (up to 99 % yield, d.r. >20:1, and >99 % ee). This novel method provides a new route for the enantioselective functionalization of α-phosphonic acid derivatives.
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Affiliation(s)
- Yi-Ming Cao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000 (China)
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36
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Cao YM, Shen FF, Zhang FT, Zhang JL, Wang R. Catalytic Asymmetric 1,2-Addition of α-Isothiocyanato Phosphonates: Synthesis of Chiral β-Hydroxy- or β-Amino-Substituted α-Amino Phosphonic Acid Derivatives. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308514] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Xie X, Jing L, Qin D, He W, Wu S, Jin L, Luo G. Regioselective asymmetric stereoablative O-alkylation of α-nitrophosphonates via o-azaxylylene intermediates generated in situ from 3-bromooxindoles. RSC Adv 2014. [DOI: 10.1039/c3ra47100d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Yan G, Borah AJ, Wang L. Recent advances in the synthesis of nitroolefin compounds. Org Biomol Chem 2014; 12:6049-58. [DOI: 10.1039/c4ob00573b] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on recent achievements in nitroolefin synthesis and the mechanisms of the reactions are also discussed.
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Affiliation(s)
- Guobing Yan
- Department of Chemistry
- Lishui University
- Lishui City 323000, P. R. China
| | - Arun Jyoti Borah
- Department of Chemistry
- Lishui University
- Lishui City 323000, P. R. China
| | - Lianggui Wang
- Department of Chemistry
- Lishui University
- Lishui City 323000, P. R. China
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39
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Cinchona based squaramide catalysed enantioselective Michael addition of α-nitrophosphonates to aryl acrylates: enantioselective synthesis of quaternary α-aminophosphonates. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.10.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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40
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Organocatalytic asymmetric synthesis of 3(2H)-furanones with adjacent quaternary and tertiary stereocenters. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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41
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Mitra S, Bagdi AK, Majee A, Hajra A. Nano indium oxide catalyzed tandem cyclization of amidine with nitroolefin. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.050] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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42
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BERA KALISANKAR, NADKARNI DWAYAJA, NAMBOOTHIRI IRISHINN. Asymmetric synthesis of $\boldsymbol{\gamma}$ -aminophosphonates: The bio-isosteric analogs of $\boldsymbol{\gamma}$ -aminobutyric acid. J CHEM SCI 2013. [DOI: 10.1007/s12039-013-0418-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Bera K, Namboothiri INN. Enantioselective Synthesis of α-Amino-γ-sulfonyl Phosphonates with a Tetrasubstituted Chiral α-CarbonviaQuinine-Squaramide-Catalyzed Michael Addition of Nitrophosphonates to Vinyl Sulfones. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300224] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Hornillos V, Pérez M, Fañanás-Mastral M, Feringa BL. Cu-catalyzed asymmetric allylic alkylation of phosphonates and phosphine oxides with Grignard reagents. Chemistry 2013; 19:5432-41. [PMID: 23447457 DOI: 10.1002/chem.201204364] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Indexed: 11/10/2022]
Abstract
An efficient and highly enantioselective copper-catalyzed allylic alkylation of phosphonates and phosphine oxides with Grignard reagents and Taniaphos or phosphoramidites as chiral ligands is reported. Transformation of these products leads to a variety of new phosphorus-containing chiral intermediates.
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Affiliation(s)
- Valentín Hornillos
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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45
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Maity S, Manna S, Rana S, Naveen T, Mallick A, Maiti D. Efficient and Stereoselective Nitration of Mono- and Disubstituted Olefins with AgNO2 and TEMPO. J Am Chem Soc 2013; 135:3355-8. [DOI: 10.1021/ja311942e] [Citation(s) in RCA: 170] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Soham Maity
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai
400076, India
| | - Srimanta Manna
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai
400076, India
| | - Sujoy Rana
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai
400076, India
| | - Togati Naveen
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai
400076, India
| | - Arijit Mallick
- Physical/Materials
Chemistry
Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai
400076, India
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46
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Manna MS, Mukherjee S. Catalytic Asymmetric Direct Vinylogous Michael Addition of Deconjugated Butenolides to Maleimides for the Construction of Quaternary Stereogenic Centers. Chemistry 2012; 18:15277-82. [DOI: 10.1002/chem.201203180] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 10/11/2012] [Indexed: 11/06/2022]
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