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Pertschi R, Brun E, Aguirre A, Guénée L, Poblador‐Bahamonde AI, Lacour J. Spirocyclic Amide Acetal Synthesis by [CpRu]‐Catalyzed Condensations of α‐Diazo‐β‐Ketoesters with γ‐Lactams. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Romain Pertschi
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Elodie Brun
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Adiran Aguirre
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Laure Guénée
- Laboratory of Crystallography University of Geneva Quai Ernest Ansermet 24 CH-1211 Geneva 4 Switzerland
| | | | - Jérôme Lacour
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
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2
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Gayyur, Choudhary S, Saxena A, Ghosh N. Gold-catalyzed homo- and cross-annulation of alkynyl carboxylic acids: a facile access to substituted 4-hydroxy 2 H-pyrones and total synthesis of pseudopyronine A. Org Biomol Chem 2020; 18:8716-8723. [PMID: 33089263 DOI: 10.1039/d0ob01700k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Au(i)-catalyzed homo- and cross-annulation reaction of alkynyl carboxylic acids offering 3,6-disubstituted 4-hydroxy 2H-pyrones has been demonstrated. The reaction tolerates various substituted alkynyl carboxylic acids and moderate to good yields of α-pyrone scaffolds have been observed. Later, a gram-scale reaction of the acid and the total synthesis of the natural product pseudopyronine A have been carried out successfully.
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Affiliation(s)
- Gayyur
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, U.P., India.
| | - Shivani Choudhary
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, U.P., India.
| | - Anchal Saxena
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, U.P., India.
| | - Nayan Ghosh
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, U.P., India. and Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, U. P., India
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3
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Efforts towards Rh(II)-catalyzed N-alkoxyazomethine ylide generation: Disparate reactivities of O-tethered α-diazo keto and -β-ketoester oximes. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Bejcek LP, Murelli RP. Oxidopyrylium [5+2] Cycloaddition Chemistry: Historical Perspective and Recent Advances (2008-2018). Tetrahedron 2018; 74:2501-2521. [PMID: 30455508 PMCID: PMC6238658 DOI: 10.1016/j.tet.2018.04.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Lauren P Bejcek
- Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, NY, Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY
| | - Ryan P Murelli
- Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, NY, Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY
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Fu L, Hoang K, Tortoreto C, Liu W, Davies HML. Formation of Tertiary Alcohols from the Rhodium-Catalyzed Reactions of Donor/Acceptor Carbenes with Esters. Org Lett 2018; 20:2399-2402. [PMID: 29641207 DOI: 10.1021/acs.orglett.8b00739] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rhodium(II)-catalyzed reactions between isopropyl acetate and trichloroethyl aryldiazoacetates result in the formation of oxirane intermediates that ring open under the reaction conditions to form tertiary alcohols. When the reaction is catalyzed by the dirhodium tetrakis(triarylcyclopropanecarboxylate) complex, Rh2( S-2-Cl,4-BrTPCP)4, the tertiary alcohols are formed with good asymmetric induction (80-88% ee).
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Affiliation(s)
- Liangbing Fu
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Kevin Hoang
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Cecilia Tortoreto
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Wenbin Liu
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Huw M L Davies
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
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Wilkerson-Hill SM, Sawano S, Sarpong R. Bis(1-cyanovinyl acetate) Is a Linear Precursor to 3-Oxidopyrylium Ions. J Org Chem 2016; 81:11132-11144. [PMID: 27740750 DOI: 10.1021/acs.joc.6b02111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein we describe the first approach to 3-oxidopyrylium ions from a linear precursor. Heating bis(1-cyanovinyl acetate) in the presence of a trace amount of pyridinium p-toluenesulfonate results in a series of acyl group transfers and an intramolecular cyclization event to form a 3-oxidopyrylium ion that can be trapped by reaction with several dipolarophiles. When treated with dienes, the result is a sequential [5 + 2]/[4 + 2] cycloaddition reaction that provides sp3-rich products of high molecular complexity.
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Affiliation(s)
| | - Shota Sawano
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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Bayat M, Nasehfard H. SiO 2Nanoparticle-catalyzed Facile and Efficient One-pot Synthesis of N-alkyl-2,5-bis[( E)-2-phenylvinyl]-1,3-dioxol-4-amine Under Solvent-free Conditions. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2450] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mohammad Bayat
- Chemistry Department; Imam Khomeini International University; Qazvin Iran
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Bayat M, Nasri S. A Simple One-Pot Synthesis of N-Alkyl-2,5-diaryl-1,3-dioxol-4-amines. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201100052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Austeri M, Rix D, Zeghida W, Lacour J. CpRu-Catalyzed O−H Insertion and Condensation Reactions of α-Diazocarbonyl Compounds. Org Lett 2011; 13:1394-7. [DOI: 10.1021/ol2000815] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martina Austeri
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Diane Rix
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Walid Zeghida
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
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Nikolaev V, Linden A, Heimgartner H. Thermolysis of Imidates: A New Method for the Generation of Carbonyl Ylides. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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