1
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Liu S, Li J, Hu W, Huang B, Cai M. Recyclable gold(I)-catalyzed hydrohydrazidation of terminal alkynes towards keto-N-acylhydrazones. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Ronchi E, Paradine SM, Jacobsen EN. Enantioselective, Catalytic Multicomponent Synthesis of Homoallylic Amines Enabled by Hydrogen-Bonding and Dispersive Interactions. J Am Chem Soc 2021; 143:7272-7278. [PMID: 33949857 PMCID: PMC8547772 DOI: 10.1021/jacs.1c03024] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report a one-step catalytic, enantioselective method for the preparation of homoallylic N-Boc amines directly from acetals. Reactive iminium ion intermediates are generated in situ through the combination of an acetal, a chiral thiourea catalyst, trialkylsilyl triflate, and N-Boc carbamate and are subsequently trapped by a variety of allylsilane nucleophiles. No homoallylic ether byproducts are detected, consistent with allylation of the iminium intermediate being highly favored over allylation of the intermediate oxocarbenium ion. Acetals derived from aromatic aldehydes possessing a variety of functional groups and substitution patterns yield homoallylic amines with excellent levels of enantiomeric enrichment. Experimental and computational data are consistent with an anchoring hydrogen-bond interaction between the protioiminium ion and the amide of the catalyst in the enantiodetermining transition state, and with stereodifferentiation achieved through specific noncovalent interactions (NCIs) with the catalyst pyrenyl moiety. Evidence is provided that the key NCI in the major pathway is a π-stacking interaction, contrasting with the cation-π interactions invoked in previously studied reactions promoted by the same family of aryl-pyrrolidino-H-bond-donor catalysts.
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Affiliation(s)
| | | | - Eric N. Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, 02138, United States
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3
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Peng X, Wang KH, Huang D, Wang J, Wang Y, Su Y, Hu Y, Fu Y. Tin powder-promoted diastereoselective allylation of chiral acylhydrazones. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiansha Peng
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Juanjuan Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Yalin Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Ying Fu
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
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4
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Polo E, Ferrer-Pertuz K, Trilleras J, Quiroga J, Gutiérrez M. Microwave-assisted one-pot synthesis in water of carbonylpyrazolo[3,4-b]pyridine derivatives catalyzed by InCl3 and sonochemical assisted condensation with aldehydes to obtain new chalcone derivatives containing the pyrazolopyridinic moiety. RSC Adv 2017. [DOI: 10.1039/c7ra10127a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Pyrazolo[3,4-b]pyridines derivatives have been synthesized via one-pot condensation of 3-methyl-1-phenyl-1H-pyrazolo-5-amine (1), paraformaldehyde (2) and β-diketones (3) under microwave irradiation in aqueous media catalyzed by InCl3.
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Affiliation(s)
- Efrain Polo
- Organic Synthesis Laboratory and Biological Activity (LSO-Act-Bio)
- Institute of Chemistry of Natural Resources
- Universidad de Talca
- Talca 3460000
- Chile
| | - Karoll Ferrer-Pertuz
- Departamento de Química
- Universidad Técnica Federico Santa María
- Valparaíso 2340000
- Chile
- Grupo/Semillero de Investigación en Compuestos Heterocíclicos
| | - Jorge Trilleras
- Grupo/Semillero de Investigación en Compuestos Heterocíclicos
- Programa de Química
- Facultad de Ciencias Básicas
- Universidad del Atlántico
- Puerto Colombia
| | - Jairo Quiroga
- Heterocyclic Compounds Research Group
- Department of Chemistry
- Universidad del Valle
- Cali A.A. 25360
- Colombia
| | - Margarita Gutiérrez
- Organic Synthesis Laboratory and Biological Activity (LSO-Act-Bio)
- Institute of Chemistry of Natural Resources
- Universidad de Talca
- Talca 3460000
- Chile
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5
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Abd El-Aal HAK. Friedel–Crafts Chemistry. Part 48. Concise Synthesis of Condensed Azaheterocyclic [1,8]naphthyridinones, Azepino-, Azocino-, and Azoninoquinoline Systems via Friedel–Crafts Ring Closures. Aust J Chem 2017; 70:1082. [DOI: 10.1071/ch17108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Unprecedented construction of a novel series of quinoline heteropolycycles (tetracyclic keto-analogues of [1,8]naphthyridinones, azepino-, azocino- and azonino[2,3-b]quinolinones systems) 10a–i by Friedel–Crafts cycliacylation reactions is described. Starting heterocyclic acids precursors 3a–i were prepared from easily accessible 2-chloroquinoline-3-carbaldehyde 1 via a three different synthetic pathways. Acid-catalyzed ring closures of the resulting tosylated acids were achieved under the influence of both Brønsted and Lewis acid catalysts. The present strategy enables a straightforward synthesis to fused tetracyclic quinolinone skeletons as demonstrated by concise and atom-economical syntheses.
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6
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Friestad GK, Banerjee K, Marié JC, Mali U, Yao L. Stereoselective access to tubuphenylalanine and tubuvaline: improved Mn-mediated radical additions and assembly of a tubulysin tetrapeptide analog. J Antibiot (Tokyo) 2016; 69:294-8. [PMID: 26883395 PMCID: PMC4924578 DOI: 10.1038/ja.2016.7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/12/2016] [Accepted: 01/18/2016] [Indexed: 01/05/2023]
Abstract
Synthesis of tubuphenylalanine and tubuvaline (Tuv), α-substituted γ-amino acid building blocks for tubulysin family of antimitotic compounds, has been improved using a radical addition reaction in the presence of unprotected hydroxyl functionality. The key carbon-carbon bond construction entails stereoselective Mn-mediated photolytic additions of alkyl iodides to the C=N bond of chiral N-acylhydrazones, and generates the chiral amines in high yield with complete stereocontrol. Reductive N-N bond cleavage and alcohol oxidation converted these amino alcohols into the corresponding γ-amino acids. The route to Tuv proceeded via peptide coupling with serine methyl ester, followed by a high-yielding sequence to convert the serine amide to a thiazole. Finally, peptide bond construction established the tubulysin framework in the form of a C-terminal alcohol analog. Attempted oxidation to the C-terminal carboxylate was unsuccessful; control experiments with dipeptide 18 showed a cyclization interfered with the desired oxidation process.
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Affiliation(s)
| | - Koushik Banerjee
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242 USA
| | | | - Umesh Mali
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242 USA
| | - Lei Yao
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242 USA
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7
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Li Z, Sharma UK, Liu Z, Sharma N, Harvey JN, Van der Eycken EV. Diversity-Oriented Synthesis of β-Lactams and γ-Lactams by Post-Ugi Nucleophilic Cyclization: Lewis Acids as Regioselective Switch. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500270] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Silva TLD, Rambo RS, Rampon DDS, Radatz CS, Benvenutti EV, Russowsky D, Schneider PH. Covalently immobilized indium(III) composite (In/SiO2) as highly efficient reusable catalyst for A3-coupling of aldehydes, alkynes and amines under solvent-free conditions. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.01.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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9
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Charette AB, Lindsay V. Stereoselective formation of amines by nucleophilic addition to azomethine derivatives. Top Curr Chem (Cham) 2014; 343:33-73. [PMID: 24233253 DOI: 10.1007/128_2013_492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This chapter describes state-of-the-art methods to prepare α-chiral amines by the addition of nonstabilized nucleophiles to imine derivatives. The first part of the chapter illustrates the most effective diastereoselective addition reaction (substrate controlled and chiral auxiliary based methods) whereas the second part focuses on catalytic asymmetric methods.
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10
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Yus M, González-Gómez JC, Foubelo F. Diastereoselective Allylation of Carbonyl Compounds and Imines: Application to the Synthesis of Natural Products. Chem Rev 2013; 113:5595-698. [DOI: 10.1021/cr400008h] [Citation(s) in RCA: 398] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Miguel Yus
- Departamento de Química
Orgánica, Facultad
de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante,
Spain
| | - José C. González-Gómez
- Departamento de Química
Orgánica, Facultad
de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante,
Spain
| | - Francisco Foubelo
- Departamento de Química
Orgánica, Facultad
de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante,
Spain
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11
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Xiong Y, Mei H, Xie C, Han J, Li G, Pan Y. Asymmetric synthesis of α-alkenyl homoallylic primary amines via 1,2-addition of Grignard reagent to α,β-unsaturated phosphonyl imines. RSC Adv 2013; 3:15820-15826. [PMID: 24159373 DOI: 10.1039/c3ra42927j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A series of chiral N-phosphonyl protected α-alkenyl homoallylic primary amines were synthesized by asymmetric addition of allylmagnesium bromide Grignard reagent towards chiral α,β-unsaturated imines. Only 1,2-adduct was obtained for all the imines with good yields and excellent diastereoselectivities. The chiral auxiliary could be easily removed under simple conditions, giving free multiple functionalized primary amines.
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Affiliation(s)
- Yiwen Xiong
- School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, 210093, China
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12
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Kim H, Lim W, Im D, Kim DG, Rhee YH. Synthetic Strategy for Cyclic Amines: A Stereodefined Cyclic N,O-Acetal as a Stereocontrol and Diversity-Generating Element. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206967] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Kim H, Lim W, Im D, Kim DG, Rhee YH. Synthetic strategy for cyclic amines: a stereodefined cyclic N,O-acetal as a stereocontrol and diversity-generating element. Angew Chem Int Ed Engl 2012; 51:12055-8. [PMID: 23109333 DOI: 10.1002/anie.201206967] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Indexed: 12/31/2022]
Affiliation(s)
- Haejin Kim
- Department of Chemistry, POSTECH (Pohang University of Science and Technology), Pohang, 790-784, Korea
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14
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15
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Friestad GK, Ji A, Baltrusaitis J, Korapala CS, Qin J. Scope of Stereoselective Mn-Mediated Radical Addition to Chiral Hydrazones and Application in a Formal Synthesis of Quinine. J Org Chem 2012; 77:3159-80. [DOI: 10.1021/jo2026349] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gregory K. Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - An Ji
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Jonas Baltrusaitis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | | | - Jun Qin
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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16
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Zhu M, Fu W, Xun C, Zou G. An Efficient Synthesis of Substituted Quinolines via Indium(III) Chloride Catalyzed Reaction of Imines with Alkynes. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.1.43] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Rampon DS, Giovenardi R, Silva TL, Rambo RS, Merlo AA, Schneider PH. Chalcogenoacetylenes Obtained by Indium(III) Catalysis: Dual Catalytic Activation of Diorgano Dichalcogenides and Csp-H Bonds. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101245] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Wu H, Yang J, Wang L. In(OTf)3-Catalyzed Synthesis of Functionalized 1,5-Benzodiazepines from o-Phenylenediamine and Alkyl Propiolates under Solvent-Free Reaction Conditions. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201180307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Friestad GK, Ji A, Korapala CS, Qin J. Intermolecular radical addition to N-acylhydrazones as a stereocontrol strategy for alkaloid synthesis: formal synthesis of quinine. Org Biomol Chem 2011; 9:4039-43. [PMID: 21537510 PMCID: PMC4114234 DOI: 10.1039/c1ob05219e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereocontrolled Mn-mediated radical addition of alkyl iodides to chiral N-acylhydrazones enables strategic C-C bond disconnection of chiral amines. This strategy was examined in the context of a total synthesis of quinine, generating new findings of functional group compatibility leading to a revised strategy. Completion of a formal synthesis of quinine is presented, validating the application of Mn-mediated radical addition as a useful new C-C bond construction method for alkaloid synthesis. The Mn-mediated addition generates the chiral amine substructure of quinine with complete stereocontrol. Subsequent elaboration includes two successive ring closures to forge the azabicyclo[2.2.2]octane ring system of quincorine, linked to quinine through two known reactions.
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Affiliation(s)
- Gregory K Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
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20
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Vieira EM, Snapper ML, Hoveyda AH. Enantioselective synthesis of homoallylic amines through reactions of (pinacolato)allylborons with aryl-, heteroaryl-, alkyl-, or alkene-substituted aldimines catalyzed by chiral C1-symmetric NHC-Cu complexes. J Am Chem Soc 2011; 133:3332-5. [PMID: 21341657 PMCID: PMC3059089 DOI: 10.1021/ja200311n] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A catalytic method for enantioselective synthesis of homoallylamides through Cu-catalyzed reactions of stable and easily accessible (pinacolato)allylborons with aryl-, heteroaryl-, alkyl-, or alkenyl-substituted N-phosphinoylimines is disclosed. Transformations are promoted by 1-5 mol % of readily accessible NHC-Cu complexes, derived from C(1)-symmetric imidazolinium salts, which can be prepared in multigram quantities in four steps from commercially available materials. Allyl additions deliver the desired products in up to quantitative yield and 98.5:1.5 enantiomeric ratio and are amenable to gram-scale operations. A mechanistic model accounting for the observed selectivity levels and trends is proposed.
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Affiliation(s)
- Erika M. Vieira
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
| | - Marc L. Snapper
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
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21
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Weaver JD, Recio A, Grenning AJ, Tunge JA. Transition metal-catalyzed decarboxylative allylation and benzylation reactions. Chem Rev 2011; 111:1846-913. [PMID: 21235271 PMCID: PMC3116714 DOI: 10.1021/cr1002744] [Citation(s) in RCA: 939] [Impact Index Per Article: 72.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A review. Transition metal catalyzed decarboxylative allylations, benzylations, and interceptive allylations are reviewed.
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Affiliation(s)
- Jimmie D. Weaver
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Antonio Recio
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | | | - Jon A. Tunge
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
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22
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Liu P, Chen W, Ren K, Wang L. Highly Efficient InBr3 Catalyzed Michael Addition of Indoles to α,β-Unsaturated Esters. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Su D, Wang X, Shao C, Xu J, Zhu R, Hu Y. Total Synthesis of (+)-Epilupinine via An Intramolecular Nitrile Oxide-Alkene Cycloaddition. J Org Chem 2010; 76:188-94. [DOI: 10.1021/jo101910r] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deyong Su
- Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xinyan Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Changwei Shao
- Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Jimin Xu
- Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Rui Zhu
- Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yuefei Hu
- Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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24
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Wang B, Zhang Y, Li P, Wang L. An Efficient and Practical Synthesis of Benzoxazoles from Acyl Chlorides and 2-Aminophenols Catalyzed by Lewis Acid In(OTf)3 under Solvent-Free Reaction Conditions. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090287] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Andrade MM, Barros MT. Fast synthesis of N-acylhydrazones employing a microwave assisted neat protocol. ACTA ACUST UNITED AC 2010; 12:245-7. [PMID: 20050700 DOI: 10.1021/cc9001444] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of N-acylhydrazones were synthesized under microwave irradiation within 2.5-10 min, starting from benzo, salicyloyl, and isonicotinic hydrazides. The protocol developed employs microwave irradiation in the absence of solvents and catalysts, leading to high yields. The results are reproducible in a 500 mg to 5 g scale.
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Affiliation(s)
- Marta M Andrade
- REQUIMTE, CQFB, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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26
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Almansa R, Collados JF, Guijarro D, Yus M. Asymmetric synthesis of α- and β-amino acids by diastereoselective addition of triorganozincates to N-(tert-butanesulfinyl)imines. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.03.046] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Cheng G, Wang X, Su D, Liu H, Liu F, Hu Y. Preparation of Enantiopure Substituted Piperidines Containing 2-Alkene or 2-Alkyne Chains: Application to Total Syntheses of Natural Quinolizidine-Alkaloids. J Org Chem 2010; 75:1911-6. [DOI: 10.1021/jo902615u] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guolin Cheng
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xinyan Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Deyong Su
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Hui Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Fei Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yuefei Hu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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28
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Yus M, Foubelo F, K. Dema H. Stereoselective Synthesis of α-Methylene-γ-butyrolactams from Ethyl 2-(Bromomethyl)acrylate and Chiral Sulfinyl Aldimines Mediated by Indium. HETEROCYCLES 2010. [DOI: 10.3987/com-09-s(s)27] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Thirupathi P, Kim SS. InBr3: A Versatile Catalyst for the Different Types of Friedel−Crafts Reactions. J Org Chem 2009; 74:7755-61. [DOI: 10.1021/jo9014613] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Zhang Y, Li P, Wang M, Wang L. Indium-catalyzed highly efficient three-component coupling of aldehyde, alkyne, and amine via C-H bond activation. J Org Chem 2009; 74:4364-7. [PMID: 19422248 DOI: 10.1021/jo900507v] [Citation(s) in RCA: 156] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, indium(III) chloride was found to be a highly effective catalyst for the three-component coupling reactions of aldehydes, alkynes, and amines (A(3)-coupling) via C-H activation. The reactions could be applied to both aromatic and aliphatic aldehydes and alkynes. Nearly quantitative yields of the desired products were obtained in most cases. No cocatalyst or activator is required, and water is the only byproduct in the reactions. Furthermore, a tentative mechanism of the InCl(3)-catalyzed one-pot, three-component coupling of aldehyde, alkyne, and amine is proposed.
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Affiliation(s)
- Yicheng Zhang
- Department of Chemistry, Huaibei Coal Teachers College, Huaibei, Anhui 235000, PR China
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Ren K, Wang M, Wang L. Lewis acid InBr3-catalyzed arylation of diorgano diselenides and ditellurides with arylboronic acids. Org Biomol Chem 2009; 7:4858-61. [DOI: 10.1039/b914533h] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Direct Allylation of Aldimines Catalyzed byC2-SymmetricN,N′-Dioxide–ScIII Complexes: Highly Enantioselective Synthesis of Homoallylic Amines. Chemistry 2008; 14:4796-8. [DOI: 10.1002/chem.200800534] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Xu L, Yang M, Qiu H, Lai G, Jiang J. Efficient Iron‐Catalyzed Sakurai–Michael Addition of Allyltrimethylsilane to Chalcones. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910701860646] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Li‐Wen Xu
- a Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University , Hangzhou, 310012, China
- b State Key Laboratory for Oxosynthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, and Graduate School of the Chinese Academy of Sciences , Lanzhou, China
| | - Ming‐Song Yang
- a Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University , Hangzhou, 310012, China
| | - Hua‐Yu Qiu
- a Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University , Hangzhou, 310012, China
| | - Guo‐Qiao Lai
- a Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University , Hangzhou, 310012, China
| | - Jian‐Xiong Jiang
- a Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University , Hangzhou, 310012, China
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Lou S, Moquist PN, Schaus SE. Asymmetric allylboration of acyl imines catalyzed by chiral diols. J Am Chem Soc 2007; 129:15398-404. [PMID: 18020334 PMCID: PMC2638762 DOI: 10.1021/ja075204v] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chiral BINOL-derived diols catalyze the enantioselective asymmetric allylboration of acyl imines. The reaction requires 15 mol % (S)-3,3'-Ph2-BINOL as the catalyst and allyldiisopropoxyborane as the nucleophile. The reaction products are obtained in good yields (75-94%) and high enantiomeric ratios (95:5-99.5:0.5) for aromatic and aliphatic imines. High diastereoselectivities (diastereomeric ratio > 98:2) and enantioselectivities (enantiomeric ratio > 98:2) are obtained in the reactions of acyl imines with crotyldiisopropoxyboranes. This asymmetric transformation is directly applied to the synthesis of Maraviroc, the selective CCR5 antagonist with potent activity against HIV-1 infection. Mechanistic investigations of the allylboration reaction including IR, NMR, and mass spectrometry studies indicate that acyclic boronates are activated by chiral diols via exchange of one of the boronate alkoxy groups with activation of the acyl imine via hydrogen bonding.
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Affiliation(s)
- Sha Lou
- Contribution from the Department of Chemistry and Center for Chemical Methodology and Library Development, Life Science and Engineering Building, Boston University, 24 Cummington Street, Boston, Boston, Massachusetts 02215
| | - Philip N. Moquist
- Contribution from the Department of Chemistry and Center for Chemical Methodology and Library Development, Life Science and Engineering Building, Boston University, 24 Cummington Street, Boston, Boston, Massachusetts 02215
| | - Scott E. Schaus
- Contribution from the Department of Chemistry and Center for Chemical Methodology and Library Development, Life Science and Engineering Building, Boston University, 24 Cummington Street, Boston, Boston, Massachusetts 02215
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Burger EC, Tunge JA. Synthesis of homoallylic amines via the palladium-catalyzed decarboxylative coupling of amino acid derivatives. J Am Chem Soc 2007; 128:10002-3. [PMID: 16881615 DOI: 10.1021/ja063115x] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Protected homoallylic amines are synthesized by the decarboxylative coupling of alpha-amino acid derivatives. The catalytic C-C bond-forming reaction relies on the bioinspired decarboxylative metalation of alpha-amino acids to produce alpha-amino anion equivalents. The alpha-amino anion equivalents are intercepted by pi-allyl palladium electrophiles to produce substituted homoallylic amines.
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Affiliation(s)
- Erin C Burger
- University of Kansas, Department of Chemistry, 2010 Malott Hall, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, USA
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Yeagley AA, Chruma JJ. C-C bond-forming reactions via Pd-mediated decarboxylative alpha-imino anion generation. Org Lett 2007; 9:2879-82. [PMID: 17580888 DOI: 10.1021/ol071080f] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alpha-imino anions are generated under neutral reaction conditions via a Pd-mediated decarboxylation of allyl diphenylglycinate imines with concomitant formation of a pi-allylpalladium species. The resulting delocalized anion can attack the pi-allyl-Pd(II) species or be intercepted by aldehydes to afford homoallylic amines or protected 1,2-amino alcohols, respectively.
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Affiliation(s)
- Andrew A Yeagley
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, USA
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Yanada R, Obika S, Kono H, Takemoto Y. In(OTf)3-Catalyzed Tandem Nucleophilic Addition and Cyclization ofortho-Alkynylarylaldimines to 1,2-Dihydroisoquinolines. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600408] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yanada R, Obika S, Kono H, Takemoto Y. In(OTf)3-Catalyzed Tandem Nucleophilic Addition and Cyclization ofortho-Alkynylarylaldimines to 1,2-Dihydroisoquinolines. Angew Chem Int Ed Engl 2006; 45:3822-5. [PMID: 16671144 DOI: 10.1002/anie.200600408] [Citation(s) in RCA: 148] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Reiko Yanada
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501
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