1
|
Xu H, Liu Y, Ding L, Wang XN, Chang J. Lewis acid-promoted cyclizations of o-alkyloxyphenyl-substituted ynamides to construct 2-amidobenzofurans. Org Chem Front 2022. [DOI: 10.1039/d2qo01246d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lewis acid-promoted cyclizations of o-alkyloxyphenyl-substituted ynamides are described for the general construction of medicinally relevant 2-amidobenzofurans. A diverse array of 3-acyl-2-amidobenzofurans could be effectively constructed via a SnCl4-promoted intermolecular cyclization....
Collapse
|
2
|
Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
Collapse
Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
| | | | | | | |
Collapse
|
3
|
Umareddy P, Arava VR. Syntheses of 2-Aroyl 3-Aryl Benzofuran and Benzothiophenes. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pailla Umareddy
- R&D Centre Suven Life Sciences Ltd; Plot No #18, Phase-III, Jeedimetla Hyderabad 500055 India
| | - Veera Reddy Arava
- R&D Centre Suven Life Sciences Ltd; Plot No #18, Phase-III, Jeedimetla Hyderabad 500055 India
| |
Collapse
|
4
|
Xuan Q, Kong W, Song Q. Copper(I)-Catalyzed Chemoselective Reduction of Benzofuran-2-yl Ketones to Alcohols with B2pin2 via a Domino-Borylation-Protodeboronation Strategy. J Org Chem 2017; 82:7602-7607. [DOI: 10.1021/acs.joc.7b00596] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qingqing Xuan
- Institute of Next Generation
Matter Transformation, College of Chemical Engineering at Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| | - Weiguang Kong
- Institute of Next Generation
Matter Transformation, College of Chemical Engineering at Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| | - Qiuling Song
- Institute of Next Generation
Matter Transformation, College of Chemical Engineering at Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| |
Collapse
|
5
|
|
6
|
Kosaka K, Ohta Y, Yokozawa T. Influence of the Boron Moiety and Water on Suzuki-Miyaura Catalyst-Transfer Condensation Polymerization. Macromol Rapid Commun 2014; 36:373-7. [DOI: 10.1002/marc.201400530] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/16/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Kentaro Kosaka
- Department of Material and Life Chemistry; Kanagawa University; Rokkakubashi Kanagawa-ku, Yokohama 221-8686 Japan
| | - Yoshihiro Ohta
- Department of Material and Life Chemistry; Kanagawa University; Rokkakubashi Kanagawa-ku, Yokohama 221-8686 Japan
| | - Tsutomu Yokozawa
- Department of Material and Life Chemistry; Kanagawa University; Rokkakubashi Kanagawa-ku, Yokohama 221-8686 Japan
| |
Collapse
|
7
|
Oonishi Y, Gómez-Suárez A, Martin AR, Makida Y, Slawin AMZ, Nolan SP. [Au]/[Pd] Multicatalytic processes: direct one-pot access to benzo[c]chromenes and benzo[b]furans. Chemistry 2014; 20:13507-10. [PMID: 25168654 DOI: 10.1002/chem.201404630] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Indexed: 12/12/2022]
Abstract
A new synthetic protocol that combines the advantages offered by eco-friendly solvent-free reactions and sequential transformations is reported. This strategy offers straightforward access to benzo[c]chromenes and benzo[b]furans from commercially available starting materials. This two-step, one-pot strategy consists of an Au-catalyzed hydrophenoxylation process followed by Pd-catalyzed C-H activation or Mizoroki-Heck reactions. The selectivity of the process towards C-H activation or Mizoroki-Heck reaction can be easily tuned.
Collapse
Affiliation(s)
- Yoshihiro Oonishi
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST (UK), Fax: (+44) 1334-463808; Current address: Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812 (Japan)
| | | | | | | | | | | |
Collapse
|
8
|
Bollini M, Casal JJ, Asís SE, Leal ES, Bruno AM. Antimalarial activity of novel imidazoisoquinolinone derivatives correlates with heme binding affinity. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1231-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Han JS, Chen SQ, Zhong P, Zhang XH. One-Pot Synthesis of 2,3-Diarylbenzofurans via Sequential Iodocyclization and Pd-Catalyzed Suzuki Coupling Reactions of 2-Alkynylanisoles with Boronic Acids in Water. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2014.930493] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Jiang-Sheng Han
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , China
- b ShanDong WeGo Pharmaceutical Co. Ltd., Wego Group , Weihai , China
| | - Su-Qin Chen
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , China
| | - Ping Zhong
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , China
- c Oujiang College, Wenzhou University , Wenzhou , China
| | - Xiao-Hong Zhang
- a College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou , China
| |
Collapse
|
10
|
Kuram MR, Bhanuchandra M, Sahoo AK. Direct Access to Benzo[b]furans through Palladium-Catalyzed Oxidative Annulation of Phenols and Unactivated Internal Alkynes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201210217] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
11
|
Kuram MR, Bhanuchandra M, Sahoo AK. Direct Access to Benzo[b]furans through Palladium-Catalyzed Oxidative Annulation of Phenols and Unactivated Internal Alkynes. Angew Chem Int Ed Engl 2013; 52:4607-12. [DOI: 10.1002/anie.201210217] [Citation(s) in RCA: 177] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 01/31/2013] [Indexed: 11/11/2022]
|
12
|
Kong Y, Jiang K, Cao J, Fu L, Yu L, Lai G, Cui Y, Hu Z, Wang G. Synthesis of 3-Alkyl- or 3-Allenyl-2-amidobenzofurans via Electrophilic Cyclization of o-Anisole-Substituted Ynamides with Carbocations. Org Lett 2013; 15:422-5. [DOI: 10.1021/ol303474a] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Yulong Kong
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Kezhi Jiang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Jian Cao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Lingzi Fu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Lian Yu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Guoqiao Lai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Yuming Cui
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Ziqiang Hu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| | - Guanhai Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Wenyi Road 222, Hangzhou 310012, People’s Republic of China
| |
Collapse
|
13
|
Micksch M, Strassner T. Palladium(II) Complexes with Chelating Biscarbene Ligands in the Catalytic Suzuki-Miyaura Cross-Coupling Reaction. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200940] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
14
|
Carrër A, Brinet D, Florent JC, Rousselle P, Bertounesque E. Palladium-catalyzed direct arylation of polysubstituted benzofurans. J Org Chem 2012; 77:1316-27. [PMID: 22141919 DOI: 10.1021/jo202060k] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient access to 2-substituted 3-arylbenzofurans through a palladium-catalyzed C3 direct arylation of 2-substituted benzofurans with aryl bromides is described. The scope and limitation of this reaction was studied. The method tolerates a variety of functional groups on the aryl halide and has been successfully extended to polysubstituted benzofurans to obtain the corresponding 3-arylbenzofurans with good to excellent yields.
Collapse
|
15
|
Yeung KS, Peng XS, Wu J, Hou XL. Five-Membered Ring Systems: Furans and Benzofurans. PROGRESS IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1016/b978-0-08-096807-0.00007-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
16
|
Arcadi A, Blesi F, Cacchi S, Fabrizi G, Goggiamani A. 2,5,7-Trisubstituted benzo[b]furans through a copper- and/or palladium-catalyzed assembly and functionalization process. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.07.122] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
17
|
In Search of Oligo(2-thienyl)-Substituted Pyridine Derivatives: A Modular Approach to Di-, Tri- and Tetra(2-thienyl)pyridines. Chemistry 2011; 17:11838-43. [DOI: 10.1002/chem.201101739] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Indexed: 11/07/2022]
|