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Cayuelas A, Ortiz R, Nájera C, Sansano JM, Larrañaga O, de Cózar A, Cossío FP. Enantioselective Synthesis of Polysubstituted Spiro-nitroprolinates Mediated by a (R,R)-Me-DuPhos·AgF-Catalyzed 1,3-Dipolar Cycloaddition. Org Lett 2016; 18:2926-9. [DOI: 10.1021/acs.orglett.6b01273] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Nájera C, Sansano JM. Binap and Phosphoramidites as Privileged Chiral Ligands for the Metal-Catalyzed Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides. CHEM REC 2016; 16:2430-2448. [DOI: 10.1002/tcr.201500283] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Indexed: 11/10/2022]
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Mancebo-Aracil J, Nájera C, Castelló LM, Sansano JM, Larrañaga O, de Cózar A, Cossío FP. Regio and diastereoselective multicomponent 1,3-dipolar cycloadditions between prolinate hydrochlorides, aldehydes and dipolarophiles for the direct synthesis of pyrrolizidines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Mancebo-Aracil J, Cayuelas A, Nájera C, Sansano JM. Silver-catalysed multicomponent 1,3-dipolar cycloaddition of 2-oxoaldehydes-derived azomethine ylides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abstract
Azomethine imines are considered 1,3-dipoles of the aza-allyl type which are transient intermediates and should be generated in situ but can also be stable and isolable compounds. They react with electron-rich and electron-poor olefins as well as with acetylenic compounds and allenoates mainly by a [3 + 2] cycloaddition but they can also take part in [3 + 3], [4 + 3], [3 + 2 + 2] and [5 + 3] with different dipolarophiles. These 1,3-dipolar cycloadditions (1,3-DC) can be performed not only under thermal or microwave conditions but also using metallo- and organocatalytic systems. In recent years enantiocatalyzed 1,3-dipolar cycloadditions have been extensively considered and applied to the synthesis of a great variety of dinitrogenated heterocycles with biological activity. Acyclic azomethine imines derived from mono and disubstituted hydrazones could be generated by prototropy under heating or by using Lewis or Brønsted acids to give, after [3 + 2] cycloadditions, pyrazolidines and pyrazolines. Cyclic azomethine imines, incorporating a C-N bond in a ring, such as isoquinolinium imides are the most widely used dipoles in normal and inverse-electron demand 1,3-DC allowing the synthesis of tetrahydro-, dihydro- and unsaturated pyrazolo[1,5-a]isoquinolines in racemic and enantioenriched forms with interesting biological activity. Pyridinium and quinolinium imides give the corresponding pyrazolopyridines and indazolo[3,2-a]isoquinolines, respectively. In the case of cyclic azomethine imines with an N-N bond incorporated into a ring, N-alkylidene-3-oxo-pyrazolidinium ylides are the most popular stable and isolated dipoles able to form dinitrogen-fused saturated and unsaturated pyrazolopyrazolones as racemic or enantiomerically enriched compounds present in many pharmaceuticals, agrochemicals and other useful chemicals.
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Ohtaka A, Sansano JM, Nájera C, Miguel-García I, Berenguer-Murcia Á, Cazorla-Amorós D. Back Cover: Palladium and Bimetallic Palladium-Nickel Nanoparticles Supported on Multiwalled Carbon Nanotubes: Application to CarbonCarbon Bond-Forming Reactions in Water (ChemCatChem 12/2015). ChemCatChem 2015. [DOI: 10.1002/cctc.201500559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Costa PRR, Sansano JM, Cossío U, Barcellos JCF, Dias AG, Nájera C, Arrieta A, de Cózar A, Cossío FP. Synthesis of Chromen[4,3-b]pyrrolidines by Intramolecular 1,3-Dipolar Cycloadditions of Azomethine Ylides: An Experimental and Computational Assessment of the Origin of Stereocontrol. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500434] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ohtaka A, Sansano JM, Nájera C, Miguel-García I, Berenguer-Murcia Á, Cazorla-Amorós D. Palladium and Bimetallic Palladium-Nickel Nanoparticles Supported on Multiwalled Carbon Nanotubes: Application to CarbonCarbon Bond-Forming Reactions in Water. ChemCatChem 2015. [DOI: 10.1002/cctc.201500164] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Vizcaíno-Milla P, Sansano JM, Nájera C, Fiser B, Gómez-Bengoa E. Pyrimidine-Derived Prolinamides as Recoverable Bifunctional Organocatalysts for Enantioselective Inter- and Intramolecular Aldol Reactions under Solvent-Free Conditions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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de Gracia Retamosa M, de Cózar A, Sánchez M, Miranda JI, Sansano JM, Castelló LM, Nájera C, Jiménez AI, Sayago FJ, Cativiela C, Cossío FP. Remote Substituent Effects on the Stereoselectivity and Organocatalytic Activity of Densely Substituted Unnatural Proline Esters in Aldol Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500160] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Castelló LM, Nájera C, Sansano JM, Larrañaga O, de Cózar A, Cossío FP. Efficient Diastereo- and Enantioselective Synthesis ofexo-Nitroprolinates by 1,3-Dipolar Cycloadditions Catalyzed by Chiral Phosphoramidite⋅Silver(I) Complexes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400563] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nájera C, Sansano JM. Coinage metal complexes as chiral catalysts for 1,3-dipolar cycloadditions. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Martín-Rodríguez M, Castelló LM, Nájera C, Sansano JM, Larrañaga O, de Cózar A, Cossío FP. Synthetic scope and DFT analysis of the chiral binap-gold(I) complex-catalyzed 1,3-dipolar cycloaddition of azlactones with alkenes. Beilstein J Org Chem 2013; 9:2422-33. [PMID: 24367409 PMCID: PMC3869218 DOI: 10.3762/bjoc.9.280] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 10/18/2013] [Indexed: 11/23/2022] Open
Abstract
The 1,3-dipolar cycloaddition between glycine-derived azlactones with maleimides is efficiently catalyzed by the dimeric chiral complex [(S a)-Binap·AuTFA]2. The alanine-derived oxazolone only reacts with tert-butyl acrylate giving anomalous regiochemistry, which is explained and supported by Natural Resonance Theory and Nucleus Independent Chemical Shifts calculations. The origin of the high enantiodiscrimination observed with maleimides and tert-butyl acrylate is analyzed using DFT computed at M06/Lanl2dz//ONIOM(b3lyp/Lanl2dz:UFF) level. Several applications of these cycloadducts in the synthesis of new proline derivatives with a 2,5-trans-arrangement and in the preparation of complex fused polycyclic molecules are described.
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Castelló LM, Nájera C, Sansano JM, Larrañaga O, Cózar AD, Cossío FP. Phosphoramidite–Cu(OTf)2 Complexes as Chiral Catalysts for 1,3-Dipolar Cycloaddition of Iminoesters and Nitroalkenes. Org Lett 2013; 15:2902-5. [DOI: 10.1021/ol4006618] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mancebo-Aracil J, Nájera C, Sansano JM. Microwave-assisted multicomponent diastereoselective 1,3-dipolar cycloaddition of ethyl glyoxylate derived azomethine ylides. Org Biomol Chem 2013; 11:662-75. [DOI: 10.1039/c2ob27072b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mancebo-Aracil J, Nájera C, Sansano JM. Multicomponent synthesis of unnatural pyrrolizidines using 1,3-dipolar cycloaddition of proline esters. Chem Commun (Camb) 2013; 49:11218-20. [DOI: 10.1039/c3cc47184e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Martín-Rodríguez M, Nájera C, Sansano JM, de Cózar A, Cossío FP. Binap-Gold(I) versus Binap-Silver Trifluoroacetate Complexes as Catalysts in 1,3-Dipolar Cycloadditions of Azomethine Ylides. Chemistry 2011; 17:14224-33. [DOI: 10.1002/chem.201101606] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Indexed: 11/11/2022]
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Martín-Rodríguez M, Nájera C, Sansano JM, de Cózar A, Cossío FP. Chiral gold(I) vs chiral silver complexes as catalysts for the enantioselective synthesis of the second generation GSK-hepatitis C virus inhibitor. Beilstein J Org Chem 2011; 7:988-96. [PMID: 21915198 PMCID: PMC3170196 DOI: 10.3762/bjoc.7.111] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Accepted: 06/14/2011] [Indexed: 01/22/2023] Open
Abstract
The synthesis of a GSK 2nd generation inhibitor of the hepatitis C virus, by enantioselective 1,3-dipolar cycloaddition between a leucine derived iminoester and tert-butyl acrylate, was studied. The comparison between silver(I) and gold(I) catalysts in this reaction was established by working with chiral phosphoramidites or with chiral BINAP. The best reaction conditions were used for the total synthesis of the hepatitis C virus inhibitor by a four step procedure affording this product in 99% ee and in 63% overall yield. The origin of the enantioselectivity of the chiral gold(I) catalyst was justified according to DFT calculations, the stabilizing coulombic interaction between the nitrogen atom of the thiazole moiety and one of the gold atoms being crucial.
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Nájera C, Sansano JM. Enantioselective synthesis of proline derivatives by 1,3-dipolar cycloadditions. MONATSHEFTE FUR CHEMIE 2011. [DOI: 10.1007/s00706-011-0467-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Martín-Rodríguez M, Nájera C, Sansano JM, Wu FL. Binap-gold(I) trifluoroacetate as a bifunctional catalyst for the synthesis of chiral prolines through 1,3-dipolar cycloaddition of azomethine ylides. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.06.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nájera C, Sansano JM, Yus M. Metal complexes versus organocatalysts in asymmetric 1,3-dipolar cycloadditions. J BRAZIL CHEM SOC 2010. [DOI: 10.1590/s0103-50532010000300002] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Nájera C, de Gracia Retamosa M, Martín-Rodríguez M, Sansano JM, de Cózar A, Cossío FP. Synthesis of Prolines by Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides and Alkenes Catalyzed by Chiral Phosphoramidite-Silver(I) Complexes. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900774] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nájera C, Sansano JM, Saá JM. Bifunctional Binols: Chiral 3,3′‐Bis(aminomethyl)‐1,1′‐bi‐2‐naphthols (Binolams) in Asymmetric Catalysis. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801069] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nájera C, Sansano JM. 1,3-Dipolar cycloadditions: applications to the synthesis of antiviral agents. Org Biomol Chem 2009; 7:4567-81. [DOI: 10.1039/b913066g] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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