1
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Copper Catalyzed Inverse Electron Demand [4+2] Cycloaddition for the Synthesis of Oxazines. Catalysts 2022. [DOI: 10.3390/catal12050526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A copper catalyzed tandem CuAAC/ring cleavage/[4+2] annulation reaction of terminal ynones, sulfonyl azides, and imines has been developed to synthesize the functionalized oxazines under mild conditions. Particularly, the intermediate N-sulfonyl acylketenimines undergo cycloaddition of an inverse electron demand Diels–Alder reaction with imines and a series of 1,3-oxazine derivatives were obtained successfully in good yields.
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2
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Bhat IA, Devaraj A, Zangrando E, Mukherjee PS. A Discrete Self-Assembled Pd12
Triangular Orthobicupola Cage and its Use for Intramolecular Cycloaddition. Chemistry 2018; 24:13938-13946. [DOI: 10.1002/chem.201803039] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Imtiyaz Ahmad Bhat
- Inorganic and Physical Chemistry Department; Indian Institute of Science; Bangalore Karnataka 560012 India
| | - Anthonisamy Devaraj
- Inorganic and Physical Chemistry Department; Indian Institute of Science; Bangalore Karnataka 560012 India
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences; via, Giorgieri 1 34127 Trieste Italy
| | - Partha Sarathi Mukherjee
- Inorganic and Physical Chemistry Department; Indian Institute of Science; Bangalore Karnataka 560012 India
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3
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Haghdadi M, Abaszade A, Abadian L, Nab N, Bosra HG. A theoretical study on the hetero-Diels–Alder reaction of phosphorous substituted diaza- and oxaza-alkenes with olefins derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra15496d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
DFT studies indicated that a hetero-Diels–Alder reaction of 4-phosphinyl and 4-phosphonyl-1,2-diaza- and 1,2-oxaza-1,3-butadienes with some olefins take place via an asynchronous concerted mechanism through endo or exo transition states.
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Affiliation(s)
- M. Haghdadi
- Department of Chemistry
- Islamic Azad University
- Babol
- Iran
| | - A. Abaszade
- Department of Chemistry
- Islamic Azad University
- Babol
- Iran
| | - L. Abadian
- Department of Chemistry
- Islamic Azad University
- Babol
- Iran
| | - N. Nab
- Department of Chemistry
- Islamic Azad University
- Babol
- Iran
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4
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Trost BM, Mahapatra S, Hansen M. Palladium-Catalyzed CH Activation of N-Allyl Imines: Regioselective Allylic Alkylations to Deliver Substituted Aza-1,3-Dienes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501322] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Trost BM, Mahapatra S, Hansen M. Palladium-Catalyzed CH Activation of N-Allyl Imines: Regioselective Allylic Alkylations to Deliver Substituted Aza-1,3-Dienes. Angew Chem Int Ed Engl 2015; 54:6032-6. [DOI: 10.1002/anie.201501322] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Indexed: 11/06/2022]
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6
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Eftekhari-Sis B, Zirak M. Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles. Chem Rev 2014; 115:151-264. [PMID: 25423283 DOI: 10.1021/cr5004216] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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7
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Selvi T, Srinivasan K. Indium triflate-catalysed Diels–Alder reactions of isochromenylium cations with enones. Org Biomol Chem 2013; 11:2162-7. [DOI: 10.1039/c3ob26284g] [Citation(s) in RCA: 21] [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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8
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Lin Z, Zhang X, You X, Gao Y. Facile cleavage of C-C bond: conversion of pyrane derivative to 1,3-oxazin derivative. Tetrahedron 2012; 68:6759-6764. [PMID: 32287425 PMCID: PMC7111841 DOI: 10.1016/j.tet.2012.05.089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 05/15/2012] [Accepted: 05/22/2012] [Indexed: 11/01/2022]
Abstract
A cascade reaction that involves a unique C-C bond cleavage has been discovered. This protocol affords an unusual and facile method for the synthesis of 1,3-oxazin derivatives under mild conditions.
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Affiliation(s)
- Zhilan Lin
- College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xueli Zhang
- College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xinkui You
- College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Yuan Gao
- College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, PR China
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9
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Samai S, Chandra Nandi G, Chowdhury S, Singh MS. l-Proline catalyzed synthesis of densely functionalized pyrido[2,3-d]pyrimidines via three-component one-pot domino Knoevenagel aza-Diels–Alder reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.06.051] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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A diastereoselective aza-Diels–Alder reaction of N-aryl-1-azadienes derived from α-amino acids with enamines. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.05.119] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Palacios F, Alonso C, Fuertes M, Ezpeleta JM, Rubiales G. Glyoxalate-Derived Aldimines in Cycloaddition Reactions with Olefins. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100395] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Monbaliu JCM, Masschelein KGR, Stevens CV. Electron-deficient 1- and 2-azabuta-1,3-dienes: a comprehensive survey of their synthesis and reactivity. Chem Soc Rev 2011; 40:4708-39. [PMID: 21655551 DOI: 10.1039/c1cs15070g] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Electron-deficient 1- and 2-azabuta-1,3-dienes are reagents intrinsically able to provide a wide range of cyclic and acyclic N-containing building blocks. Depending on their substitution, they behave as dienes for Diels-Alder reactions, as partners for [4+1], [3+2], [2+2]-cycloadditions, for aziridinations and as electrophiles for 1,2 and 1,4-additions. Nowadays, they are a very versatile family of compounds, despite their usual instability and complex reactivity. Four decades of research in this challenging area are reviewed in this critical review: their synthetic aspects and their reactivity towards a wide range of dienophiles, dipoles and nucleophiles are described as well. The introduction focuses on their electronic properties in order to get a clear picture of their reactivity (190 references).
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Affiliation(s)
- Jean-Christophe M Monbaliu
- SynBioC Research Group, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Gent, Belgium
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13
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Affiliation(s)
- Javier Vicario
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco , Vitoria , Spain
| | - Domitila Aparicio
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco , Vitoria , Spain
| | - Francisco Palacios
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco , Vitoria , Spain
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14
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Palacios F, Marigorta EMD, Rodríguez M, Vinagre C. Synthesis and Reactivity of an 1,3-Oxazin-6-one Derived from α-Aminophosphonate. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.522633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Francisco Palacios
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco, UPV/EHU , Vitoria-Gasteiz , Spain
| | - Edorta Martínez de Marigorta
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco, UPV/EHU , Vitoria-Gasteiz , Spain
| | - Marta Rodríguez
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco, UPV/EHU , Vitoria-Gasteiz , Spain
| | - Carmen Vinagre
- a Departamento de Química Orgánica I, Facultad de Farmacia , Universidad del País Vasco, UPV/EHU , Vitoria-Gasteiz , Spain
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15
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Moghaddam FM, Kiamehr M, Khodabakhshi MR, Mirjafary Z, Fathi S, Saeidian H. A new domino Knoevenagel-hetero-Diels–Alder reaction: an efficient catalyst-free synthesis of novel thiochromone-annulated thiopyranocoumarin derivatives in aqueous medium. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.09.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Jayagobi M, Raghunathan R. Diastereoselective synthesis of cis-fused pyrano[4,5-c]pyrrole derivatives via microwave-accelerated intramolecular Knoevenagal hetero Diels–Alder reaction. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.10.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Palacios F, Ochoa de Retana AM, Pascual S, de Trocóniz GF, Ezpeleta JM. Fluoroalkylated α,β-Unsaturated Imines: Efficient and Versatile Substrates for the Synthesis of Fluorinated Vinylogous β-Amino Esters and 3,4-Dihydropyridin-2-ones. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000948] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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An Efficient One-Pot Strategies for the Synthesis of [1,3] Oxazine Derivatives. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2010. [DOI: 10.5012/jkcs.2010.54.4.437] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Rai A, Yadav LDS. N-Iodosaccharin (NISac): a new reusable catalyst for formal [2+4] cycloaddition of imines and enones. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.05.113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Moghaddam F, Kiamehr M, Taheri S, Mirjafary Z. Synthesis of Novel Polycyclic Indole-Annulated Thiopyranocoumarin Derivatives via Domino Knoevenagel-Hetero-Diels-Alder Reaction in Aqueous Media. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900324] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Palacios F, Alonso C, Arrieta A, Cossío FP, Ezpeleta JM, Fuertes M, Rubiales G. Lewis Acid Activated Aza-Diels-Alder Reaction ofN-(3-Pyridyl)aldimines: An Experimental and Computational Study. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901325] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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22
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Kiamehr M, Moghaddam FM. An efficient ZnO-catalyzed synthesis of novel indole-annulated thiopyrano-chromene derivatives via Domino Knoevenagel-hetero-Diels–Alder reaction. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.106] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Regioselective synthesis of pyrrolin-3-ones and 2,3,4,5-tetrahydro[1,3]-oxazines from N-vinylic amidines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.12.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Vicario J, Aparicio D, Palacios F. Conjugate Addition of Amines to an α,β-Unsaturated Imine Derived from α-Aminophosphonate. Synthesis of γ-Amino-α-dehydroaminophosphonates. J Org Chem 2008; 74:452-5. [DOI: 10.1021/jo8022022] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javier Vicario
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080 Vitoria, Spain
| | - Domitila Aparicio
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080 Vitoria, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080 Vitoria, Spain
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25
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Khoshkholgh MJ, Balalaie S, Gleiter R, Rominger F. Intramolecular hetero-Diels–Alder reaction of 1-oxa-1,3-butadienes with terminal acetylenes in aqueous media using CuI. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.056] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Attanasi OA, Filippone P, Lillini S, Mantellini F, Nicolini S, de los Santos JM, Ignacio R, Aparicio D, Palacios F. Reactions of 1,2-diaza-1,3-dienes with thiol derivatives: a versatile construction of nitrogen/sulfur containing heterocycles. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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27
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Pinho e Melo TM, Cardoso AL, Palacios F, de los Santos JM, Pais AA, Abreu PE, Paixão JA, Beja AM, Ramos Silva M. New approach to exclusive formation of both enantiomers of β-amino acid derivatives. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.06.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Palacios F, Retana AMOD, Oyarzabal J, Pascual S, Trocóniz GFD. Synthesis of Fluoroalkylated β-Aminophosphonates and Pyridines from Primary β-Enaminophosphonates. J Org Chem 2008; 73:4568-74. [DOI: 10.1021/jo8005667] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080-Vitoria, Spain
| | - Ana M. Ochoa de Retana
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080-Vitoria, Spain
| | - Julen Oyarzabal
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080-Vitoria, Spain
| | - Sergio Pascual
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080-Vitoria, Spain
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Aza-Diels–Alder reaction of α,β-unsaturated sulfinylimines derived from α-amino acids with enolethers and enamines. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.101] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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30
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Palacios F, Herrán E, Rubiales G, Alonso C. Regioselective synthesis of pyridines and dihydropyridines derived from β-amino acids and aminophosphonates by reaction of N-vinylic phosphazenes with α,β-unsaturated ketones. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.03.146] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Sisak A. New Method for the Synthesis of 2‐Aza‐1,3‐Butadienes. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910600946033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Panunzio M, Tamanini E, Bandini E, Campana E, D'Aurizio A, Vicennati P. 5-Phenylthio-1,3-oxazinan-4-ones via hetero Diels–Alder reactions: synthesis of (R)- and (S)-Duloxetines and Fluoxetines. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.10.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Palacios F, Alonso C, Legido M, Rubiales G, Villegas M. Synthesis and subsequent reactivity of 1-amino-2-aza-1,3-butadienes derived from β-amino esters. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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34
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Palacios F, Herrán E, Alonso C, Rubiales G. Regioselective cycloaddition of 3-azatrienes with enamines. Synthesis of pyridines derived from β-aminoacids. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.05.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Palacios F, Herran E, Alonso C, Rubiales G, Lecea B, Ayerbe M, Cossío FP. Reaction of N-Vinylic Phosphazenes with α,β-Unsaturated Aldehydes. Azatriene-Mediated Synthesis of Dihydropyridines and Pyridines Derived from β-Amino Acids. J Org Chem 2006; 71:6020-30. [PMID: 16872184 DOI: 10.1021/jo060775b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aza-Wittig reaction of N-vinylic phosphazenes (1,2 addition), derived from diphenylmethylphosphine or derived from trimethylphosphine with alpha,beta-unsaturated aldehydes, leads to the formation of 3-azatrienes through a [2 + 2]-cycloaddition-cycloreversion sequence. The presence of an alkyl substituent in position 3 of N-vinylic phosphazenes increases the steric interactions, and [4 + 2] periselectivity (1,4 addition) is observed. Reaction of azatrienes with alpha,beta-unsaturated aldehydes yields pyridines.
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Affiliation(s)
- Francisco Palacios
- Departamento de Química Organica I. Facultad de Farmacia, Apartado 450, 01080 Vitoria, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Spain.
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Palacios F, Vicario J, Aparicio D. An Efficient Synthesis of Achiral and Chiral Cyclic Dehydro-α-Amino Acid Derivatives Through Nucleophilic Addition of Amines to β,γ-Unsaturatedα-Keto Esters. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600092] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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37
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Cossío FP, Alonso C, Lecea B, Ayerbe M, Rubiales G, Palacios F. Mechanism and stereoselectivity of the aza-Wittig reaction between phosphazenes and aldehydes. J Org Chem 2006; 71:2839-47. [PMID: 16555840 DOI: 10.1021/jo0525884] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanism of the aza-Wittig reaction between phosphazenes and aldehydes has been studied computationally, using DFT methods (B3LYP/6-31G level), and experimentally. It has been found that the reaction consists of a tandem [2+2] cycloaddition-cycloreversion sequence in which pi and sigma orbitals as well as lone pairs are involved. Both [2+2] processes take place via thermally allowed supra-supra mechanisms. P-trimethyl-lambda(5)-phosphazenes are predicted to be more reactive than their P-triphenyl analogues. The stereochemical outcome of the whole reaction depends only on the second step, because conformational changes in the intermediate 1,3,2-lambda(5)-oxazaphosphazetidines have a much lower activation energy than the second [2+2] cycloreversion reaction. Preferential or exclusive formation of the corresponding (E)-imines is predicted.
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Affiliation(s)
- Fernando P Cossío
- Departamento de Química Organica I, Facultad de Química, Universidad del País Vasco (UPV/EHU), P. K. 1072, 20080 San Sebastian/Donostia, Spain.
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Preparation and reactions of 3-phosphinyl-1-aza-1,3-butadienes. Synthesis of phosphorylated pyridine and pyrazole derivatives. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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39
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Park DY, Lee MJ, Kim TH, Kim JN. Regioselective construction of polysubstituted pyridine ring from Baylis–Hillman adducts via sequential introduction of tosylamide, Michael reaction, aldol condensation, and elimination of TsH. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.10.034] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Palacios F, Alonso C, Rodríguez M, Martínez de Marigorta E, Rubiales G. Preparation of 3-(Fluoroalkyl)-2-azadienes and Its Application in the Synthesis of (Fluoroalkyl)isoquinoline and -pyridine Derivatives. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400770] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Palacios F, Aparicio D, López Y, de los Santos JM. Synthesis of functionalized α-amino-phosphine oxides and -phosphonates by addition of amines and aminoesters to 4-phosphinyl- and 4-phosphonyl-1,2-diaza-1,3-butadienes. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.01.081] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Palacios F, Aparicio D, López Y, de los Santos JM, Alonso C. Cycloaddition Reactions of Phosphorylated 1,2-Diaza-1,3-butadienes with Olefins: Regioselective Synthesis of Pyridazine Derivatives. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400675] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Palacios F, Alonso C, Rubiales G, Villegas M. Aza-Wittig reaction of fluoroalkylated N-vinylic phosphazenes with carbonyl compounds. Usefulness of 2-azadienes for the preparation of fluoroalkyl pyridine derivatives. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.01.080] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Vanderhoydonck B, Stevens CV. Conjugate Addition to 1-Phosphono-2-aza-1,3-butadienes: Synthesis of Phosphonylated γ-Lactams. J Org Chem 2004; 70:191-8. [PMID: 15624922 DOI: 10.1021/jo0488661] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Several 1-phosphono-2-aza-1,3-butadienes, 1 and 13-20, were evaluated in the reaction with different enolate-type nucleophiles to induce addition at the 1- or the 4-position of the azadiene. 1-Phosphono-2-azadienes 1 react with sodium malonate at the 1-position, leading to the formation of bisenamines 12 after elimination of the phosphonate moiety. On the contrary, sodium malonate adds at the 4-position of 1-aryl-1-phosphono-2-azadienes 14-19 when the azadienes bear a halogenated phenyl substituent, and the resulting addition products 21-26 are easily transformed into the corresponding phosphonylated gamma-lactams 35-40. The regioselectivity of the addition is explained by reversal of polarization of the azadiene due to the electron-withdrawing character of the halogenated phenyl substituents.
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Affiliation(s)
- Bart Vanderhoydonck
- Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium
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Palacios F, Ochoa de Retana AM, Pascual S, Oyarzabal J. Preparation of Fluoroalkyl Imines, Amines, Enamines, Ketones, α-Amino Carbonyls, and α-Amino Acids from Primary Enamine Phosphonates. J Org Chem 2004; 69:8767-74. [PMID: 15575755 DOI: 10.1021/jo048682m] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple method for preparation of fluoroalkyl beta-enaminophosphonates 1 from alkylphosphonates 2 and perfluoroalkyl nitriles 3 is reported. Olefination reaction of functionalized phosphates 1 with aldehydes gives alpha,beta-unsaturated imines 5. Acid hydrolysis of these fluoroalkyl derivatives 5 affords alpha,beta-unsaturated ketones 6, while their selective reduction with hydrides leads to the formation of allylamines 7, enamines 8, and saturated ketones 9 or amines 10. Selective oxidative cleavage of the carbon-carbon double bond of allylamines 7 gives fluorinated alpha-amino aldehydes 12, alpha-amino ketones 13, or alpha-amino acid derivatives 14.
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Affiliation(s)
- Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080 Vitoria, Spain.
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Palacios F, Alonso C, Rubiales G, Villegas M. Regioselective synthesis of fluoroalkyl pyridine derivatives from 3-fluoroalkyl substituted 2-aza-1,3-butadienes. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.174] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Addition of amine derivatives to phosphorylated 1,2-diaza-1,3-butadienes. Synthesis of α-aminophosphonates. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.192] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Palacios F, Alonso C, Tobillas C, Rubiales G. Cycloaddition Reactions of Neutral 2-Azadienes with Acetylenic Esters. HETEROCYCLES 2004. [DOI: 10.3987/com-04-s(p)17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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49
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Palacios F, de Retana AMO, de Marigorta EM, Rodriguez M, Pagalday J. Aza-Wittig reaction of N-phosphorylalkyl phosphazenes with carbonyl compounds and phenylisocyanate. Synthesis of 4-amino-3-phosphoryl-2-azadienes and pyrazine-phosphonates. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00337-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Chapter 6.1 Six-membered ring systems: Pyridines and benzo derivatives. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0959-6380(03)80015-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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