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Houghtling KE, Canfield AM, Paradine SM. Convergent Synthesis of Dihydrobenzofurans via Urea Ligand-Enabled Heteroannulation of 2-Bromophenols with 1,3-Dienes. Org Lett 2022; 24:5787-5790. [PMID: 35904546 PMCID: PMC9380016 DOI: 10.1021/acs.orglett.2c02301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
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We disclose a palladium and urea ligand-mediated heteroannulation
of 2-bromophenols and 1,3-dienes. This method addresses synthetic
challenges present in the palladium-catalyzed heteroannulation of
bifunctional reagents and olefins by engaging a diverse scope of coupling
partners under a unified set of reaction conditions. Our recently
developed urea ligand platform outperforms phosphine ligands to generate
the dihydrobenzofuran motif in a convergent manner.
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Affiliation(s)
- Kaitlyn E Houghtling
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Amanda M Canfield
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Shauna M Paradine
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
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2
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Construction of Benzo‐Fused Heterocycles by Epoxide–Heteronucleophile Cyclization: Applications in the Synthesis of Natural Products and Designed Molecules. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Caleffi GS, Demidoff FC, Nájera C, Costa PRR. Asymmetric hydrogenation and transfer hydrogenation in the enantioselective synthesis of flavonoids. Org Chem Front 2022. [DOI: 10.1039/d1qo01503f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this review, we explore the applications of Asymmetric Hydrogenation (AH) and Asymmetric Transfer Hydrogenation (ATH) in the total synthesis of natural flavonoids and their analogues, highlighting the limitations and opportunities in the field.
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Affiliation(s)
- Guilherme S. Caleffi
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Bloco H, Cidade Universitária, 21941-902, Rio de Janeiro, Brazil
| | - Felipe C. Demidoff
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Bloco H, Cidade Universitária, 21941-902, Rio de Janeiro, Brazil
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - Paulo R. R. Costa
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Bloco H, Cidade Universitária, 21941-902, Rio de Janeiro, Brazil
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4
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Reddy PM, Ramachandran K, Anbarasan P. Palladium-catalyzed diastereoselective synthesis of 2,2,3-trisubstituted dihydrobenzofurans via intramolecular trapping of O-ylides with activated alkenes. J Catal 2021. [DOI: 10.1016/j.jcat.2021.02.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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5
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6
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Rodriguez KX, Vail JD, Ashfeld BL. Phosphorus(III)-Mediated Stereoconvergent Formal [4+1]-Cycloannulation of 1,2-Dicarbonyls and o-Quinone Methides: A Multicomponent Assembly of 2,3-Dihydrobenzofurans. Org Lett 2016; 18:4514-7. [DOI: 10.1021/acs.orglett.6b02122] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kevin X. Rodriguez
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Justin D. Vail
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Brandon L. Ashfeld
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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7
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Gorobets E, Parvez M, Derksen DJ, Keay BA. Generation of Benzyne Species from Diphenylphosphoryl Derivatives: Simultaneous Exchange of Three Functional Groups. Chemistry 2016; 22:8479-82. [PMID: 27144945 DOI: 10.1002/chem.201601370] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Indexed: 11/10/2022]
Abstract
Interaction of (2-diphenylphosphoryl-3-iodo-4-methoxy-phenyl) methanol with NaH in DMF at ambient temperature results in the generation of benzyne intermediates that can be trapped by furan or DMF. Trapping with DMF forms 3-(dimethylaminomethyl)-2-hydroxy-6-methoxybenzaldehyde demonstrating the simultaneous exchange of three functionalities in a single step. The presence of the alkoxy substituent adjacent to iodine is critical for high regioselectivity addition of DMF. The corresponding bromide or triflate can be used in place of the iodide with equal efficiency. This methodology was used to synthesize the reported structure of gigasol and leading to a structural reassignment of this biscoumarin natural product.
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Affiliation(s)
- Evgueni Gorobets
- Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Masood Parvez
- Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Darren J Derksen
- Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Brian A Keay
- Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada.
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8
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Keßberg A, Metz P. Nutzung eines o
-Chinonmethids in der asymmetrischen Transferhydrierung: enantioselektive Synthese von Brosimin A, Brosimin B und Brosimacutin L. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anton Keßberg
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstraße 66 01069 Dresden Deutschland
| | - Peter Metz
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstraße 66 01069 Dresden Deutschland
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9
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Keßberg A, Metz P. Utilizing an o
-Quinone Methide in Asymmetric Transfer Hydrogenation: Enantioselective Synthesis of Brosimine A, Brosimine B, and Brosimacutin L. Angew Chem Int Ed Engl 2015; 55:1160-3. [DOI: 10.1002/anie.201507269] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/28/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Anton Keßberg
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstrasse 66 01069 Dresden Germany
| | - Peter Metz
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstrasse 66 01069 Dresden Germany
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10
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Dai J, Ma D, Fu C, Ma S. Gram Scale Total Synthesis of 2-Hydroxy-3-methylcarbazole, Pyrano[3,2-a]carbazole and Prenylcarbazole Alkaloids. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500783] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Takahashi M, Suzuki N, Ishikawa T, Huang HY, Chang HS, Chen IS. Unprecedented 8,9'-neolignans: enantioselective synthesis of possible stereoisomers for structural determination. JOURNAL OF NATURAL PRODUCTS 2014; 77:2585-2589. [PMID: 25427159 DOI: 10.1021/np500641a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
(+)-Wutaienin (3) and its C-7 methyl ether (4), isolated from Zanthoxylum wutaiense, were found to be unprecedented 8,9'-neolignans containing an (S)-2-(1,1-dimethyl-1-hydroxymethyl)-7-methoxydihydrobenzofuran skeleton. Wutaienin (3) was present in the plant as an inseparable 1:1 mixture of the (7,8)-syn-diastereoisomers. The diastereoisomeric mixture was characterized by comparison with four possible diastereoisomers, which were enantioselectively synthesized from (S)-5-bromo-(1,1-dimethyl-1-hydroxymethyl)-7-methoxydihydrobenzofuran using Evans' oxazolidinone-assisted asymmetric aldol condensation to install the chiral centers at the C-7 and C-8 positions.
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Affiliation(s)
- Masato Takahashi
- Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
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12
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Song L, Yao H, Tong R. Biomimetic Asymmetric Total Syntheses of Spirooliganones A and B. Org Lett 2014; 16:3740-3. [DOI: 10.1021/ol501593m] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Liyan Song
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Hongliang Yao
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Rongbiao Tong
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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13
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Zhu Y, Wang Q, Cornwall RG, Shi Y. Organocatalytic asymmetric epoxidation and aziridination of olefins and their synthetic applications. Chem Rev 2014; 114:8199-256. [PMID: 24785198 DOI: 10.1021/cr500064w] [Citation(s) in RCA: 333] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yingguang Zhu
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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14
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Osyanin VA, Osipov DV, Klimochkin YN. Reactions of o-quinone methides with pyridinium methylides: a diastereoselective synthesis of 1,2-dihydronaphtho[2,1-b]furans and 2,3-dihydrobenzofurans. J Org Chem 2013; 78:5505-20. [PMID: 23668240 DOI: 10.1021/jo400621r] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A simple, general route to the 1,2-dihydronaphtho[2,1-b]furans and 2,3-dihydrobenzofurans substituted at C-2 by an acyl or aryl group, starting from phenolic Mannich bases and pyridinium ylides, has been developed. The mechanism of the reaction is believed to involve the formation of the o-quinone methide intermediate, Michael-type addition of the ylide to the o-quinone methide, followed by intramolecular nucleophilic substitution.
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Affiliation(s)
- Vitaly A Osyanin
- Department of Organic Chemistry, Samara State Technical University, 244 Molodogvardeiskaya Street, 443100 Samara, Russian Federation.
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15
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Accessing columbianetin-containing natural products via a domino on-water, in-water process. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Wang W, Xue J, Tian T, Jiao Y, Li Y. The first asymmetric total synthesis of (+)-coriandrone A and B. Org Biomol Chem 2013; 11:6686-90. [DOI: 10.1039/c3ob41497c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Harris EB, Banwell MG, Willis AC. Protecting group free syntheses of (±)-columbianetin and (±)-angelmarin. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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First enantioselective synthesis of methyl (+)-7-methoxyanodendroate, an antitubercular dihydrobenzofuran. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Peng X, Li P, Shi Y. Synthesis of (+)-Ambrisentan via Chiral Ketone-Catalyzed Asymmetric Epoxidation. J Org Chem 2011; 77:701-3. [DOI: 10.1021/jo201927m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xianyou Peng
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Peijun Li
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523,
United States
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20
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Lu Y, Zheng C, Yang Y, Zhao G, Zou G. Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Catalyzed by Primary-Secondary Diamines. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100230] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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21
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Abstract
This article gives an overview of synthetic approaches to the 2,3-dihydrobenzofuran ring system with an emphasis on recently developed methods. The synthetic approaches are classified according to the key bond(s) formed during the construction of the dihydrobenzofuran skeleton, and approaches of relevance to the synthesis of natural products are highlighted.
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Affiliation(s)
- Tom D. Sheppard
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon St, London WC1H 0AJ, UK
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