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Szolnoki CT, Gál GT, Kováts É, Papp G, Horváth H, Joó F, Kathó Á, Udvardy A. A double phosphabetaine formed from 1,3,5-triaza-7-phosphaadamantane (PTA) with acetylenedicarboxylic acid and its Ag(CF 3SO 3)-based coordination polymer. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.2008928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Csenge Tamara Szolnoki
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
- Doctoral School of Chemistry, University of Debrecen, Debrecen, Hungary
| | - Gyula Tamás Gál
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Éva Kováts
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Budapest, Hungary
| | - Gábor Papp
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Henrietta Horváth
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, Debrecen, Hungary
| | - Ferenc Joó
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, Debrecen, Hungary
| | - Ágnes Kathó
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Antal Udvardy
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
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Makra Z, Madácsi R, Martinek A. T, Bényei A, Puskás LG, Gyuris M, Kanizsai I. Phosphine(III)‐Triggered One‐Pot Domino Sequences towards 5,6‐Dihydropyridine‐2‐(1H)‐one and Pyridine‐2(1H)‐one Scaffolds. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101370] [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]
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3
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Udvardy A, Kathó Á, Papp G, Joó F, Gál GT. Novel three-dimensional coordination polymer of 2-(1,3,5-tri-aza-7-phospho-niatri-cyclo-[3.3.1.1 3,7]decan-7-yl)ethanoic acid with silver(I) tetra-fluoro-borate. Acta Crystallogr E Crystallogr Commun 2022; 78:251-254. [PMID: 35371541 PMCID: PMC8900499 DOI: 10.1107/s2056989022000767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/21/2022] [Indexed: 11/10/2022]
Abstract
An AgI-based coordination polymer (CP), namely, poly[[[μ3-2-(1,3,5-tri-aza-7-phospho-niatri-cyclo-[3.3.1.13,7]decan-7-yl)ethano-ate-κ4 N:N':O,O']silver(I)] tetra-fluoro-borate], {[Ag(C9H16N3O2P)]BF4} n , was synthesized in an aqueous solution of zwitterionic 2-(1,3,5-tri-aza-7-phospho-niatri-cyclo-[3.3.1.13,7]decan-7-yl)ethan-o-ate (L) and AgBF4 with exclusion of light at room temperature. The colourless and light-insensitive CP crystallized in the monoclinic space group Cc. The asymmetric unit consists of an AgI cation, the zwitterionic L ligand and a BF4 - counter-ion. Each AgI ion is coordinated by two carboxyl-ate oxygen atoms in a chelating coordination mode, as well as one of the nitro-gen atoms of two neighbouring L ligands. The crystal structure of the CP was classified as a unique three-dimensional arrangement. The CP was also characterized in aqueous solutions by multinuclear NMR and HRMS spectroscopies and elemental analysis.
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Affiliation(s)
- Antal Udvardy
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Ágnes Kathó
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Gábor Papp
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Ferenc Joó
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Gyula Tamás Gál
- Department of Physical Chemistry, University of Debrecen, Debrecen, Hungary
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Zhou L, Zhang X, Wang Q, Liu M, Wang W, Wu Y, Chen L, Guo H. Phosphine-Catalyzed Asymmetric Tandem Isomerization/Annulation of Allyl Amines with Allenoates: Enantioselective Annulation of a Saturated C-N Bond. Org Lett 2021; 23:9173-9178. [PMID: 34784228 DOI: 10.1021/acs.orglett.1c03483] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Under catalysis by chiral phosphine, an asymmetric isomerization/annulation cascade reaction of allylamines with allenoates was realized. A wide range of γ-substituted allenoates were tolerated to afford chiral pyrroline derivatives in high yields with excellent enantioselectivities. In the reaction, isomerization of readily available N-allylamines to reactive aliphatic imines through a 1,4-proton shift is a key step, which circumvents the isolation of highly unstable alkyl N-sulfonylimines.
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Affiliation(s)
- Leijie Zhou
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Xue Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
| | - Qijun Wang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Min Liu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Liezhong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
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5
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Udvardy A, Szolnoki CT, Kováts É, Nyul D, Gál GT, Papp G, Joó F, Kathó Á. Water-soluble Ag(I)-based coordination polymers obtained by anion-directed self-assembly of various AgX salts and a phosphabetaine derived from 1,3,5-triaza-7-phophaadamantane. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Mahmoud AG, Guedes da Silva MFC, Pombeiro AJ. 3,7-Diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (DAPTA) and derivatives: Coordination chemistry and applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213614] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Gao Z, Xie L, Ji L, Ma X, Li X, Liu H, Guo H. Phosphine-catalyzed [3 + 2] annulation of β-sulfonamido-substituted enones with trans-α-cyano-α,β-unsaturated ketones for the synthesis of highly substituted pyrrolidines. RSC Adv 2021; 11:40136-40139. [PMID: 35494138 PMCID: PMC9044564 DOI: 10.1039/d1ra07881j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/09/2021] [Indexed: 11/21/2022] Open
Abstract
To synthesize highly substituted pyrrolidines, we developed a phosphine-catalyzed [3 + 2] annulation of β-sulfonamido-substituted enones with trans-α-cyano-α,β-unsaturated ketones. We prepared a series of pyrrolidines under mild conditions with high yields and moderate-to-good diastereoselectivities. A catalytic mechanism for this reaction is suggested. To synthesize highly substituted pyrrolidines, we developed a phosphine-catalyzed [3 + 2] annulation of β-sulfonamido-substituted enones with trans-α-cyano-α,β-unsaturated ketones.![]()
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Affiliation(s)
- Zhenzhen Gao
- School of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
| | - Lei Xie
- School of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
| | - Lusha Ji
- School of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
| | - Xin Ma
- School of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
| | - Honglei Liu
- College of Materials Science and Engineering, Qingdao University, Qing dao 266071, Shandong, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
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8
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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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Udvardy A, Szolnoki CT, Gombos R, Papp G, Kováts É, Joó F, Kathó Á. Mechanochemical P-derivatization of 1,3,5-Triaza-7-Phosphaadamantane (PTA) and Silver-Based Coordination Polymers Obtained from the Resulting Phosphabetaines. Molecules 2020; 25:E5352. [PMID: 33207789 PMCID: PMC7697749 DOI: 10.3390/molecules25225352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022] Open
Abstract
We have described earlier that in aqueous solutions, the reaction of 1,3,5-triaza-7-phosphaadamantane (PTA) with maleic acid yielded a phosphonium-alkanoate zwitterion. The same reaction with 2-methylmaleic acid (citraconic acid) proceeded much slower. It is reported here, that in the case of glutaconic and itaconic acids (constitutional isomers of citraconic acid), formation of the corresponding phosphabetaines requires significantly shorter reaction times. The new phosphabetaines were isolated and characterized by elemental analysis, multinuclear NMR spectroscopy and ESI-MS spectrometry. Furthermore, their molecular structures in the solid state were determined by single crystal X-ray diffraction (SC-XRD). Synthesis of the phosphabetaines from PTA and unsaturated dicarboxylic acids was also carried out mechanochemically with the use of a planetary ball mill, and the characteristics of the syntheses in solvent and under solvent-free conditions were compared. In aqueous solutions, the reaction of the new phosphabetaines with Ag(CF3SO3) yielded Ag(I)-based coordination polymers. According to the SC-XRD results, in these polymers the Ag(I)-ion coordinates to the N and O donor atoms of the ligands; however, Ag(I)-Ag(I) interactions were also identified. The Ag(I)-based coordination polymer (CP1.2) formed with the glutaconyl derivative of PTA (1) showed considerable antimicrobial activity against both Gram-negative and Gram-positive bacteria and yeast strains.
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Affiliation(s)
- Antal Udvardy
- Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary; (C.T.S.); (R.G.); (G.P.); (Á.K.)
| | - Csenge Tamara Szolnoki
- Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary; (C.T.S.); (R.G.); (G.P.); (Á.K.)
- Doctoral School of Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary
| | - Réka Gombos
- Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary; (C.T.S.); (R.G.); (G.P.); (Á.K.)
| | - Gábor Papp
- Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary; (C.T.S.); (R.G.); (G.P.); (Á.K.)
| | - Éva Kováts
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Konkoly Thege Miklós u. 29-33, H-1121 Budapest, Hungary;
| | - Ferenc Joó
- Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary; (C.T.S.); (R.G.); (G.P.); (Á.K.)
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, P.O. Box 400, H-4002 Debrecen, Hungary
| | - Ágnes Kathó
- Department of Physical Chemistry, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary; (C.T.S.); (R.G.); (G.P.); (Á.K.)
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10
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Blank BR, Andrews IP, Kwon O. Phosphine-Catalyzed (4+1) Annulation: Rearrangement of Allenylic Carbamates to 3-Pyrrolines through Phosphonium Diene Intermediates. ChemCatChem 2020; 12:4352-4372. [PMID: 34447481 PMCID: PMC8386297 DOI: 10.1002/cctc.202000626] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Indexed: 01/02/2023]
Abstract
We have developed a phosphine-catalyzed (4+1) annulative rearrangement for the preparation of 3-pyrrolines from allenylic carbamates via phosphonium diene intermediates. We employed this methodology to synthesize an array of 1,3-disubstituted- and 1,2,3-trisubstituted-3-pyrrolines, including the often difficult to prepare 2-alkyl variants. A mechanistic investigation employing allenylic acetates and mononucleophiles unexpectedly unveiled that a phosphine-catalyzed (4+1) reaction for the construction of cyclopentene products, previously reported by Tong, might not occur through a phosphonium diene, as had been proposed, but rather through multiple mechanisms working in concert. Consequently, our phosphine-catalyzed rearrangement is most likely the first transformation to involve the unequivocal formation of a phosphonium diene intermediate along the reaction pathway. To demonstrate the synthetic utility of this newly developed reaction, we have completed concise formal syntheses of the pyrrolizidine alkaloids (±)-trachelanthamidine and (±)-supinidine.
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Affiliation(s)
- Brian R Blank
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California, 90095-1569 (USA)
| | - Ian P Andrews
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California, 90095-1569 (USA)
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California, 90095-1569 (USA)
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11
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Cao ZH, Wang YH, Kalita SJ, Schneider U, Huang YY. Phosphine-Catalyzed [4+1] Cycloadditions of Allenes with Methyl Ketimines, Enamines, and a Primary Amine. Angew Chem Int Ed Engl 2020; 59:1884-1890. [PMID: 31747102 DOI: 10.1002/anie.201912263] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/06/2019] [Indexed: 12/12/2022]
Abstract
Unprecedented phosphine-catalyzed [4+1] cycloadditions of allenyl imides have been discovered using various N-based substrates including methyl ketimines, enamines, and a primary amine. These transformations provide a one-pot access to cyclopentenoyl enamines and imines, or (chiral) γ-lactams through two geminal C-C bond or two C-N bond formations, respectively. Several P-based key intermediates including a 1,4-(bis)electrophilic α,β-unsaturated ketenyl phosphonium species have been detected by 31 P NMR and HRMS analyses, which shed light on the postulated catalytic cycle. The synthetic utility of this new chemistry has been demonstrated through a gram-scaling up of the catalytic reaction as well as regioselective hydrogenation and double condensation to form cyclopentanoyl enamines and fused pyrazole building blocks, respectively.
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Affiliation(s)
- Ze-Hun Cao
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
| | - Yu-Hao Wang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
| | - Subarna Jyoti Kalita
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
| | - Uwe Schneider
- EaStCHEM School of Chemistry, The University of Edinburgh, The King's Buildings, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Yi-Yong Huang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
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12
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Cao Z, Wang Y, Kalita SJ, Schneider U, Huang Y. Phosphine‐Catalyzed [4+1] Cycloadditions of Allenes with Methyl Ketimines, Enamines, and a Primary Amine. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ze‐Hun Cao
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Yu‐Hao Wang
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Subarna Jyoti Kalita
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Uwe Schneider
- EaStCHEM School of ChemistryThe University of EdinburghThe King's Buildings David Brewster Road Edinburgh EH9 3FJ UK
| | - Yi‐Yong Huang
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
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13
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Zhao LM, Liu K, Li DF. One-Pot Synthesis of Aza-Morita-Baylis-Hillman Adducts via Zinc-Mediated Allylation of 4-Bromocrotonates and Imines. J Org Chem 2019; 84:15429-15436. [PMID: 31657557 DOI: 10.1021/acs.joc.9b02434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An approach to the synthetically valuable β-substituted aza-Morita-Baylis-Hillman (MBH) type products, through zinc-mediated allylation of imines with 4-bromocrotonates followed by subsequent isomerization of the double bond, was developed. Complementary to classical MBH reaction, this reaction utilizes easily available 4-bromocrotonates as the reaction partners, providing a rapid alternative to the traditional use of α,β-unsaturated carbonyl compounds. The short reaction time, one-pot operation, broad substrate scopes, gram-scale synthesis, and synthetic application exemplified the utility and practicability of this method.
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Affiliation(s)
- Li-Ming Zhao
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , Jiangsu , China.,State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China
| | - Kun Liu
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , Jiangsu , China
| | - De-Feng Li
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , Jiangsu , China
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14
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New functionalized scaffolds from hydroxymethylfurfural and glucosyloxymethylfurfural by Morita–Baylis–Hillman reaction with cycloalkenones. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Bharadwaj KC. Chemoselective and Highly Rate Accelerated Intramolecular Aza-Morita-Baylis-Hillman Reaction. J Org Chem 2018; 83:14498-14506. [PMID: 30441893 DOI: 10.1021/acs.joc.8b02310] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Despite being a very useful C-C bond forming and highly applicative reaction, Morita-Baylis-Hillman (MBH) reaction has been limited by its excessive slow reaction rate, including its intramolecular version. In certain cases, reaction time may even go to weeks and months. A highly chemoselective and rate accelerated intramolecular MBH reaction of just 15 min has been developed. The product dihydroquinoline, being unstable, was converted to an important quinoline framework. In some cases IMBH adducts were isolable, thus confirming the reaction path. Control experiments toward mechanism investigation have been carried out. Use of sodium sulfide has emerged as a rate accelerating catalyst in DMF-EtOH solvent system. Reaction intermediate for IMBH pathway was isolated and characterized. Other aspects such as the application of IMBH adduct for Michael addition and amidation have also been carried out.
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Affiliation(s)
- Kishor Chandra Bharadwaj
- Department of Chemistry, Institute of Science , Banaras Hindu University , Varanasi 221005 , India
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16
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Marri G, Justaud F, Das S, Grée R. α-β Unsaturated Acylsilanes as Surrogates of Acrolein for Morita-Baylis-Hillman Reactions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Gangababu Marri
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Uppal Road 500007 Hyderabad Telangana India
| | - Frédéric Justaud
- CNRS; ISCR (Institute for Chemical Sciences in Rennes); Univ Rennes; UMR 6226 35000 Rennes France
| | - Saibal Das
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Uppal Road 500007 Hyderabad Telangana India
| | - René Grée
- CNRS; ISCR (Institute for Chemical Sciences in Rennes); Univ Rennes; UMR 6226 35000 Rennes France
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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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18
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Bharadwaj KC. Acryl Activation by Intramolecular Hydrogen Bond: Morita Baylis Hillman Reaction of Acrylamide with Broad Substrate Scope. ChemistrySelect 2017. [DOI: 10.1002/slct.201701081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kishor Chandra Bharadwaj
- Department of Chemistry, Institute of Science; Banaras Hindu Uniaversity; Varanasi India- 221005
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19
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Nafion®-Containing Solid Lipid Nanoparticles as a Tool for Anticancer Pt Delivery: Preliminary Studies. J CHEM-NY 2017. [DOI: 10.1155/2017/3206298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Preliminary studies of nanoparticles based on the perfluorosulfonic acid resin Nafion have been carried out with the aim of establishing an ionic connection with the protonable phosphine 1,3,5-triaza-7-phosphaadamantane (PTA), suitable for the coordination of platinum. Nafion-containing nanoparticles (NAF) were produced by homogenization followed by ultrasonication method. After production, NAF were characterized in terms of size, morphology, andin vitrocytotoxicity. The PCS studies showed that theZ-average mean diameter was around 250 nm. Moreover, the polydispersity index showed a monodimensional distribution of nanoparticles. Cryo-TEM analysis showed a uniform and homogenous population of particles, characterized by the presence of both ovoidal and needle-like structures. To evaluate thein vitrocytotoxicity, NAF were tested on human cancer cell lines K562 and A2780. No cytotoxic effect was found on both cell lines. By13P-NMR measures, it is here proved that the strongly acidic sulfonic groups of Nafion-containing nanoparticles (NAF) can act as protonating agents for PTA. The protonation occurs selectively at nitrogen; hence protonated PTA maintains its ability to coordinate platinum via its phosphorus atom.
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Britvin SN, Rumyantsev AM, Zobnina AE, Padkina MV. Between Adamantane and Atrane: Intrabridgehead Interactions in the Cage-Like Phosphane Related to a Novel Tris(homoadamantane) Ring System. Chemistry 2016; 22:14227-35. [PMID: 27531034 DOI: 10.1002/chem.201601637] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Sergey N. Britvin
- Department of Crystallography; Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 St. Petersburg Russia
| | - Andrey M. Rumyantsev
- Department of Genetics and Biotechnology; Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 St. Petersburg Russia
| | - Anastasia E. Zobnina
- Department of Genetics and Biotechnology; Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 St. Petersburg Russia
| | - Marina V. Padkina
- Department of Genetics and Biotechnology; Saint Petersburg State University; Universitetskaya Nab. 7/9 199034 St. Petersburg Russia
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Synthesis and structure of stable water-soluble phosphonium alkanoate zwitterions derived from 1,3,5-triaza-7-phosphaadamantane. Struct Chem 2015. [DOI: 10.1007/s11224-015-0618-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Yoshida M, Mizuguchi T, Namba K. One-Pot Synthesis of Tri- and Tetrasubstituted Pyridines by Sequential Ring-Opening/Cyclization/Oxidation of N-Arylmethyl 3-Aziridinylpropiolate Esters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409015] [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]
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23
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Singh RM, Bharadwaj KC, Tiwari DK. Morita-Baylis-Hillman reaction of acrylamide with isatin derivatives. Beilstein J Org Chem 2014; 10:2975-80. [PMID: 25550764 PMCID: PMC4273229 DOI: 10.3762/bjoc.10.315] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 11/27/2014] [Indexed: 12/12/2022] Open
Abstract
The Morita–Baylis–Hillman reaction of acrylamide, as an activated alkene, has seen little development due to its low reactivity. We have developed the reaction using isatin derivatives with acrylamide, DABCO as a promoter and phenol as an additive in acetonitrile. The corresponding aza version with acrylate and acrylonitrile has also been developed resulting in high product yields.
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Affiliation(s)
- Radhey Mohan Singh
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi-221005, India
| | | | - Dharmendra Kumar Tiwari
- Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500007, India
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Yoshida M, Mizuguchi T, Namba K. One-Pot Synthesis of Tri- and Tetrasubstituted Pyridines by Sequential Ring-Opening/Cyclization/Oxidation of N-Arylmethyl 3-Aziridinylpropiolate Esters. Angew Chem Int Ed Engl 2014; 53:14550-4. [DOI: 10.1002/anie.201409015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Indexed: 01/04/2023]
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25
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Chen R, Fan X, Gong J, He Z. Lewis-Base-Catalyzed Annulations of Nitroallylic Acetates asC3Synthons with Electron-Deficient Alkenes. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402059] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Kapdi AR, Fairlamb IJS. Anti-cancer palladium complexes: a focus on PdX2L2, palladacycles and related complexes. Chem Soc Rev 2014; 43:4751-77. [PMID: 24723061 DOI: 10.1039/c4cs00063c] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Much success has been achieved with platinum-based chemotherapeutic agents, i.e. through interactions with DNA. The long-term application of Pt complexes is thwarted by issues, leading scientists to examine other metals such as palladium which could exhibit complementary modes of action (given emphasis wherever known). Over the last 10 years several research groups have focused on the application of an eclectic array of palladium complexes (of the type PdX2L2, palladacycles and related structures) as potential anti-cancer agents. This review therefore provides readers with an up to date account of the advances that have taken place over the past several decades.
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Affiliation(s)
- Anant R Kapdi
- Department of Chemistry, Institute of Chemical Technology, 302, Advance Centre, Nathalal Parekh Road, Matunga, Mumbai-400019, India.
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Yang LJ, Li S, Wang S, Nie J, Ma JA. Nucleophilic Lewis Base Dependent Addition Reactions of Allenoates with Trifluoromethylated Cyclic Ketimines. J Org Chem 2014; 79:3547-58. [DOI: 10.1021/jo500356t] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Li-Jun Yang
- Department
of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry
of Education), Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Shen Li
- Department
of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry
of Education), Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Shuai Wang
- Department
of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry
of Education), Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Jing Nie
- Department
of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry
of Education), Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Jun-An Ma
- Department
of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry
of Education), Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
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Yang LJ, Wang S, Nie J, Li S, Ma JA. Bisphosphine-Triggered One-Pot Sequential [3 + 2]/[3 + 2] Annulation of Allenoates with Cyclic Ketimines. Org Lett 2013; 15:5214-7. [DOI: 10.1021/ol402364t] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li-Jun Yang
- Department of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry of Education), State Synergetic Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, P. R. of China
| | - Shuai Wang
- Department of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry of Education), State Synergetic Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, P. R. of China
| | - Jing Nie
- Department of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry of Education), State Synergetic Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, P. R. of China
| | - Shen Li
- Department of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry of Education), State Synergetic Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, P. R. of China
| | - Jun-An Ma
- Department of Chemistry, Key Laboratory of Systems Bioengineering (The Ministry of Education), State Synergetic Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, P. R. of China
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Wang C, Wang L, Zeng S, Xu S, He Z. A New BINOL-Derived Chiral Bifunctional Phosphine Organocatalyst: Preparation and Application in Asymmetric (Aza)-Morita-Baylis-Hillman Reactions. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2012.761987] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Chunzhang Wang
- a School of Chemistry and Chemical Engineering , Henan University , Kaifeng, P.R. China
| | - Lijun Wang
- b The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry , Nankai University , Tianjin , P.R. China
| | - San Zeng
- b The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry , Nankai University , Tianjin , P.R. China
| | - Silong Xu
- b The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry , Nankai University , Tianjin , P.R. China
| | - Zhengjie He
- b The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry , Nankai University , Tianjin , P.R. China
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Tseng PY, Chuang SC. Chemo-, Regio- and Stereoselective Tricyclohexylphosphine-Catalyzed [3+2] Cycloaddition of Enynes with [60]Fullerene Initiated by 1,4-Michael Addition: Synthesis of Cyclopenteno[60]fullerenes and their Electrochemical Properties. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300255] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Lindner C, Liu Y, Karaghiosoff K, Maryasin B, Zipse H. The aza-Morita-Baylis-Hillman reaction: a mechanistic and kinetic study. Chemistry 2013; 19:6429-34. [PMID: 23526632 DOI: 10.1002/chem.201204006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/10/2013] [Indexed: 11/09/2022]
Abstract
The aza-Morita-Baylis-Hillman (aza-MBH) reaction has been studied in a variety of solvents, a selection of imine substrates and with various combinations of PPh3 and para-nitrophenol as the catalyst system. The measured kinetic data indicates that the effects of solvent and protic co-catalyst are strongly interdependent. These results are most easily reconciled with a mechanistic model involving the reversible protonation of zwitterionic intermediates in the catalytic cycle, which is also supported by (31)P NMR spectroscopy and quantum chemical studies.
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Affiliation(s)
- Christoph Lindner
- Department of Chemistry, LMU Munich, Butenandtstrasse 5-13, 81377 München, Germany
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32
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Wang YQ, Zhang Y, Dong H, Zhang J, Zhao J. Phosphane-Catalyzed [3+2] Cycloaddition Reaction of Allenoate and Cyclic Imines: A Simple and Efficient Method for Synthesis of Benzo-Fused Cyclic Sulfamidate Heterocycles. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201756] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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33
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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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Chuang SC, Deng JC, Chan FW, Chen SY, Huang WJ, Lai LH, Rajeshkumar V. [3+2] Cycloaddition of Dialkyl (E)-Hex-2-en-4-ynedioates to [60]Fullerene by Phosphane-Promoted Tandem α(δ′)-Michael Additions. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200024] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Lindner C, Tandon R, Liu Y, Maryasin B, Zipse H. The aza-Morita-Baylis-Hillman reaction of electronically and sterically deactivated substrates. Org Biomol Chem 2012; 10:3210-8. [PMID: 22407401 DOI: 10.1039/c2ob07058h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aza-Morita-Baylis-Hillman (azaMBH) reaction has been studied for electronically and sterically deactivated Michael acceptors. It is found that electronically deactivated systems can be converted with electron-rich phosphanes and pyridines as catalysts equally well. For sterically deactivated systems clearly better catalytic turnover can be achieved with pyridine catalysts. This is in accordance with the calculated affinities of the catalysts towards different Michael-acceptors.
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Affiliation(s)
- Christoph Lindner
- Department of Chemistry, LMU Muenchen, Butenandtstr. 5-13, 81377 Muenchen, Germany
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36
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Xu S, Chen R, Qin Z, Wu G, He Z. Divergent Amine-Catalyzed [4 + 2] Annulation of Morita–Baylis–Hillman Allylic Acetates with Electron-Deficient Alkenes. Org Lett 2012; 14:996-9. [DOI: 10.1021/ol2032569] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Silong Xu
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, P. R. China
| | - Rongshun Chen
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, P. R. China
| | - Zifeng Qin
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, P. R. China
| | - Guiping Wu
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, P. R. China
| | - Zhengjie He
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, P. R. China
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37
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Zhou R, Wang J, Tian J, He Z. Phosphine-catalyzed [4 + 2] annulation and vinylogous addition reactions between 1,4-dien-3-ones and 1,1-dicyanoalkenes. Org Biomol Chem 2012; 10:773-81. [DOI: 10.1039/c1ob06187a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Xu S, Chen R, He Z. PBu3-Mediated Vinylogous Wittig Reaction of α-Methyl Allenoates with Aldehydes and Mechanistic Investigations. J Org Chem 2011; 76:7528-38. [DOI: 10.1021/jo201466k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Silong Xu
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, People's Republic of China
| | - Rongshun Chen
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, People's Republic of China
| | - Zhengjie He
- The State Key Laboratory of Elemento-Organic Chemistry and Department of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, People's Republic of China
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39
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An efficient and simple Morita–Baylis–Hillman reaction based on the N-methylpyrrolidine–Ba(OH)2 catalytic system. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Ma R, Xu S, Tang X, Wu G, He Z. Phosphine-mediated diverse reactivity of γ-substituted allenoates with aldehydes: syntheses of highly functionalized chromans and (E,E)-1,3-dienes. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Sajna KV, Kotikalapudi R, Chakravarty M, Bhuvan Kumar NN, Swamy KCK. Cycloaddition Reactions of Allenylphosphonates and Related Allenes with Dialkyl Acetylenedicarboxylates, 1,3-Diphenylisobenzofuran, and Anthracene. J Org Chem 2011; 76:920-38. [DOI: 10.1021/jo102240u] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- K. V. Sajna
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - Ramesh Kotikalapudi
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - Manab Chakravarty
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - N. N. Bhuvan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
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Gonsalvi L, Peruzzini M. Aqueous Phase Reactions Catalysed by Transition Metal Complexes of 7-Phospha-1,3,5-triazaadamantane (PTA) and Derivatives. PHOSPHORUS COMPOUNDS 2011. [DOI: 10.1007/978-90-481-3817-3_7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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43
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Sampath M, Lee PYB, Loh TP. Phosphine-catalyzed one-pot isomerization of 3-alkynoates and [2 + 3]-cycloaddition with imines: formal synthesis of Securinega alkaloid (±)-allosecurinine. Chem Sci 2011. [DOI: 10.1039/c1sc00311a] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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44
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Basavaiah D, Reddy BS, Badsara SS. Recent contributions from the Baylis-Hillman reaction to organic chemistry. Chem Rev 2010; 110:5447-674. [PMID: 20735052 DOI: 10.1021/cr900291g] [Citation(s) in RCA: 743] [Impact Index Per Article: 53.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Deevi Basavaiah
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India.
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45
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Wei Y, Shi M. Privileged chiral catalysts in asymmetric Morita-Baylis-Hillman/aza-Morita-Baylis-Hillman reaction. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11434-010-3119-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Synthesis, characterization and solubility studies of four new highly water soluble 1,3,5-triaza-7-phosphaadamantane (PTA) salts and their gold(I) complexes. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.03.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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47
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Kim ES, Kim YM, Kim JN. Facile Synthesis of N-Tosyl Aza-Baylis-Hillman Adducts of Acrylamide via a Pd-Catalyzed Hydration of Nitrile to Amide. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.03.700] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Bravo J, Bolaño S, Gonsalvi L, Peruzzini M. Coordination chemistry of 1,3,5-triaza-7-phosphaadamantane (PTA) and derivatives. Part II. The quest for tailored ligands, complexes and related applications. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.08.006] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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49
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Rajesh K, Shanbhag P, Raghavendra M, Bhardwaj P, Namboothiri IN. One-pot three component α-aminoalkylation of conjugated nitroalkenes and nitrodienes. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.12.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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A Highly Diastereoselective Tertiary Amine-Catalyzed Cascade Michael-Michael-Henry Reaction between Nitromethane, Activated Alkenes and α,β-Unsaturated Carbonyl Compounds. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900657] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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