1
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Zanakhov TO, Galenko EE, Novikov MS, Khlebnikov AF. Cyclocondensation of 2-(α-Diazoacyl)-2 H-azirines with Amidines in Diazo Synthesis of Functionalized Naphtho[1,2- d]imidazoles. J Org Chem 2024; 89:8641-8655. [PMID: 38847418 DOI: 10.1021/acs.joc.4c00598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
A diazo approach toward functionalized naphtho[1,2-d]imidazole derivatives has been developed. It involved a new reaction of arylamidines with 2-(α-diazoacyl)-2H-azirines giving 5-aryl-4-(α-diazoacyl)-1H-imidazoles under mild conditions in good yields. The mechanism of annulation of azirines with amidines is discussed based on DFT calculations. The reaction proceeds in an unusual manner by cleavage of the azirine C-C bond, allowing for the transfer of the aryl substituent from the arylamidine to the proper position of the key intermediate of naphtho[1,2-d]imidazole synthesis. Under thermolysis conditions, 5-aryl-4-(α-diazoacyl)-1H-imidazoles undergo Wolff rearrangement followed by the selective 6π-cyclization of transient ketene to form 3H-naphtho[1,2-d]imidazoles bearing various substituents in the positions 2,3,4,5,7,8,9. Additionally, variation of the substituents at position 5 of naphtho[1,2-d]imidazoles is possible through the formation of triflates and subsequent cross-coupling reactions. One more heterocyclic pharmacophoric skeleton, 3H-furo[3',2':3,4]naphtho[1,2-d]imidazole, was easily constructed from methyl 5-hydroxy-3H-naphtho[1,2-d]imidazole-4-carboxylates in a one-pot mode using O-alkylation with phenacyl bromides followed by base-induced intramolecular acyl substitution at room temperature with high yields.
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Affiliation(s)
- Timur O Zanakhov
- Saint Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya Naberezhnaya, St. Petersburg 199034, Russia
| | - Ekaterina E Galenko
- Saint Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya Naberezhnaya, St. Petersburg 199034, Russia
| | - Mikhail S Novikov
- Saint Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya Naberezhnaya, St. Petersburg 199034, Russia
| | - Alexander F Khlebnikov
- Saint Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya Naberezhnaya, St. Petersburg 199034, Russia
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2
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Sasane AV, Liu RS. Catalyst-free diazo cross-coupling to access useful 3(2 H)-furanone derivatives. Chem Commun (Camb) 2023; 59:1086-1089. [PMID: 36622255 DOI: 10.1039/d2cc05912f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Catalyst-free synthesis of 3(2H)-furanone derivatives has been achieved from metal-free cross-coupling of α-diazo ester and α-aryldiazo ketones. This reaction sequence comprises a prior Wolff rearrangement of α-aryldiazo ketones to 2-arylketenes, which are trapped in situ with α-diazo esters to form cyclopropanones before undergoing oxa-Nazarov cyclization.
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Affiliation(s)
- Amit Vijay Sasane
- A Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, ROC.
| | - Rai-Shung Liu
- A Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, ROC.
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3
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Nikolova Y, Fabri B, Moneva Lorente P, Guarnieri‐Ibáñez A, de Aguirre A, Soda Y, Pescitelli G, Zinna F, Besnard C, Guénée L, Moreau D, Di Bari L, Bakker E, Poblador‐Bahamonde AI, Lacour J. Chemo- and Regioselective Multiple C(sp 2 )-H Insertions of Malonate Metal Carbenes for Late-Stage Functionalizations of Azahelicenes. Angew Chem Int Ed Engl 2022; 61:e202210798. [PMID: 35943860 PMCID: PMC9825994 DOI: 10.1002/anie.202210798] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Indexed: 01/11/2023]
Abstract
Chiral quinacridines react up to four times, step-by-step, with α-diazomalonates under RuII and RhII catalysis. By selecting the catalyst, [CpRu(CH3 CN)3 ][PF6 ] (Cp=cyclopentadienyl) or Rh2 (oct)4 , chemo and regioselective insertions of derived metal carbenes are achieved in favor of mono- or bis-functionalized malonate derivatives, respectively, (r.r.>49 : 1, up to 77 % yield, 12 examples). This multi-introduction of malonate groups is particularly useful to tune optical and chemical properties such as absorption, emission or Brønsted acidity but also cellular bioimaging. Density-functional theory further elucidates the origin of the carbene insertion selectivity and also showcases the importance of conformations in the optical response.
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Affiliation(s)
- Yana Nikolova
- Department of Organic ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
| | - Bibiana Fabri
- Department of Organic ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
| | - Pau Moneva Lorente
- Department of Organic ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
| | | | - Adiran de Aguirre
- Department of Organic ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
| | - Yoshiki Soda
- Department of Inorganic and Analytical ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica IndustrialeUniversity of PisaVia G. Moruzzi 1356124PisaItaly
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica IndustrialeUniversity of PisaVia G. Moruzzi 1356124PisaItaly
| | - Céline Besnard
- Laboratory of CrystallographyUniversity of GenevaQuai Ernest Ansermet 241211Geneva 4Switzerland
| | - Laure Guénée
- Laboratory of CrystallographyUniversity of GenevaQuai Ernest Ansermet 241211Geneva 4Switzerland
| | - Dimitri Moreau
- Department of BiochemistryUniversity of GenevaQuai Ernest Ansermet 241211Geneva 4Switzerland
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica IndustrialeUniversity of PisaVia G. Moruzzi 1356124PisaItaly
| | - Eric Bakker
- Department of Inorganic and Analytical ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
| | | | - Jérôme Lacour
- Department of Organic ChemistryUniversity of GenevaQuai Ernest Ansermet 301211Geneva 4Switzerland
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4
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Nikolova Y, Fabri B, Moneva Lorente P, Guarnieri-Ibáñez A, de Aguirre A, Soda Y, Pescitelli G, Zinna F, Besnard C, Guénée L, Moreau D, Di Bari L, Bakker E, Poblador Bahamonde AI, Lacour J. Chemo‐ and Regioselective Multiple C(sp2)−H Insertions of Malonate Metal Carbenes for Late‐Stage Functionalizations of Azahelicenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yana Nikolova
- Université de Genève: Universite de Geneve Organic Chemistry SWITZERLAND
| | - Bibiana Fabri
- Université de Genève: Universite de Geneve Organic Chemistry SWITZERLAND
| | - Pau Moneva Lorente
- Université de Genève: Universite de Geneve Organic Chemistry SWITZERLAND
| | | | - Adiran de Aguirre
- Université de Genève: Universite de Geneve Organic Chemistry SWITZERLAND
| | - Yoshiki Soda
- Université de Genève: Universite de Geneve Inorganic and Analytical Chemistry SWITZERLAND
| | - Gennaro Pescitelli
- Università di Pisa: Universita degli Studi di Pisa chemistry and industrial chemistry ITALY
| | - Francesco Zinna
- Università di Pisa: Universita degli Studi di Pisa chemistry and industrial chemistry ITALY
| | - Céline Besnard
- Université de Genève: Universite de Geneve Laboratory of Crystallography SWITZERLAND
| | - Laure Guénée
- Université de Genève: Universite de Geneve Laboratory of Crystallography SWITZERLAND
| | - Dimitri Moreau
- Université de Genève: Universite de Geneve Department of Biochemistry SWITZERLAND
| | - Lorenzo Di Bari
- Università di Pisa: Universita degli Studi di Pisa chemistry and industrial chemistry ITALY
| | - Eric Bakker
- Université de Genève: Universite de Geneve Inorganic and Analytical Chemistry SWITZERLAND
| | | | - Jerome Lacour
- University of Geneva Department of Organic Chemistry Quai Ernest Ansermet 30 CH-1211 Geneva 4 SWITZERLAND
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5
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Jiao J, Xiao F, Wang C, Zhang Z. Iodine-Promoted Metal-Free Cyclization and O/S Exchange of Acrylamides with Thiuram: One-Step Synthesis of Quinolino-2-thiones. J Org Chem 2022; 87:4965-4970. [DOI: 10.1021/acs.joc.1c03030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jing Jiao
- School of Chemistry and Molecular Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Fangtao Xiao
- School of Chemistry and Molecular Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Cheng Wang
- School of Chemistry and Molecular Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Zhipeng Zhang
- School of Chemistry and Molecular Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
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6
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Zhang XJ, Zhang J, Xu YN, Li YM, Chi M, Yan Y, Wu RX, Zhang HR, Zhu YP. Cascade Wolff Rearrangement/Acylation: A Metal-Free and Eco-Friendly Approach for 4-Hydroxy-pyrazolo[3,4- b]pyridin-6-ones and N-Pyrazole Amides Synthesis from 5-Aminopyrazoles and α-Diazoketones. J Org Chem 2021; 86:17471-17481. [PMID: 34797656 DOI: 10.1021/acs.joc.1c02165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A highly chemoselective cascade Wolff rearrangement/acylation reaction between 5-aminopyrazoles and diazo compounds has been developed. The protocol can facilitate the switchable synthesis of 4-hydroxy-pyrazolo[3,4-b]pyridin-6-ones and N-pyrazole amides with the merits of a broad substrate scope, high functional group compatibility, and green and sustainable performance manner. All reactions proceeded efficiently without any catalyst and additives (acid and base) and resulted in the release of benign N2, wherein diethyl carbonate served as a green benign solvent.
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Affiliation(s)
- Xiang-Jin Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Jie Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Yu-Ning Xu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Yi-Ming Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Man Chi
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Yu Yan
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Rui-Xue Wu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Hui-Ru Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
| | - Yan-Ping Zhu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P. R. China
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7
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Bodunov VA, Galenko EE, Sakharov PA, Novikov MS, Khlebnikov AF. Selective Cu-Catalyzed Intramolecular Annulation of 3-Aryl/Heteryl-2-(diazoacetyl)-1 H-pyrroles: Synthesis of Benzo/Furo/Thieno[ e]-Fused 1 H-Indol-7-oles and Their Transformations. J Org Chem 2019; 84:10388-10401. [PMID: 31309836 DOI: 10.1021/acs.joc.9b01573] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Co(III)-catalyzed reaction of 1,3-dicarbonyl compounds with 2-(diazoacetyl)-2H-azirines, prepared by a simplified procedure from 2H-azirin-2-carbonyl chlorides, led in high yields to the formation of 2-(diazoacetyl)pyrroles, while leaving the diazoacetyl function intact. The intramolecular aromatic substitution reaction of 2-(diazoacetyl)pyrroles, catalyzed by Cu(OTf)2, provided selectively previously unknown benzo[e]- and hetero[e]-fused indol-7-oles in good yields. Formylation of benzo[e]indol-4-ol led selectively to the 5-formyl derivative, which is a good precursor for an unusual salen ligand and its Ni-complex. Triflates prepared from benzo[e]indol-4-oles gave various 4-substituted benzo[e]indoles carrying aryl, 2-thienyl, 2-pyridyl, and alkynyl groups, in excellent yields using cross-coupling reactions. 4-(2-Pyridyl)benzo[e]indoles, upon treatment with BF3·Et2O/Et3N, afforded a new type of fluorescent boron complexes with large Stokes shifts.
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Affiliation(s)
- Vladimir A Bodunov
- St. Petersburg State University , Institute of Chemistry , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Ekaterina E Galenko
- St. Petersburg State University , Institute of Chemistry , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Pavel A Sakharov
- St. Petersburg State University , Institute of Chemistry , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Mikhail S Novikov
- St. Petersburg State University , Institute of Chemistry , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
| | - Alexander F Khlebnikov
- St. Petersburg State University , Institute of Chemistry , 7/9 Universitetskaya nab. , St. Petersburg 199034 , Russia
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8
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Solé D, Amenta A, Bennasar M, Fernández I. Palladium‐ and Ruthenium‐Catalyzed Intramolecular Carbene C
Ar
−H Functionalization of γ‐Amino‐α‐diazoesters for the Synthesis of Tetrahydroquinolines. Chemistry 2019; 25:10239-10245. [DOI: 10.1002/chem.201902104] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Daniel Solé
- Laboratori de Química Orgànica, Facultat de Farmàcia i Ciències de l'AlimentacióUniversitat de Barcelona Av. Joan XXIII 27–31 08028 Barcelona Spain
| | - Arianna Amenta
- Laboratori de Química Orgànica, Facultat de Farmàcia i Ciències de l'AlimentacióUniversitat de Barcelona Av. Joan XXIII 27–31 08028 Barcelona Spain
| | - M.‐Lluïsa Bennasar
- Laboratori de Química Orgànica, Facultat de Farmàcia i Ciències de l'AlimentacióUniversitat de Barcelona Av. Joan XXIII 27–31 08028 Barcelona Spain
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en, Química Avanzada (ORFEO-CINQA)Facultad de Ciencias QuímicasUniversidad Complutense de Madrid 28040 Madrid Spain
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9
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Sharma P, Singh RR, Giri SS, Chen LY, Cheng MJ, Liu RS. Gold-Catalyzed Oxidation of Thioalkynes To Form Phenylthio Ketene Derivatives via a Noncarbene Route. Org Lett 2019; 21:5475-5479. [PMID: 31274331 DOI: 10.1021/acs.orglett.9b01768] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Gold-catalyzed oxidations of thioalkynes with 8-methylquinoline oxides afford 2-phenylthioketenes that can be trapped efficiently with alcohols. The synthetic utility is manifested by terminal and internal thioalkynes over a wide scope, bearing esters, ketones, alkyl, and oxime substituents. Our density functional theory calculations suggest that gold-catalyzed oxidations of terminal and internal thioalkynes with 8-methylquinoline oxides generate gold-bound ketene intermediates without the intermediacy of α-oxo gold carbene.
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Affiliation(s)
- Pankaj Sharma
- Frontier Research Center on Fundamental and Applied Sciences of Matters, Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China
| | - Rahulkumar Rajmani Singh
- Frontier Research Center on Fundamental and Applied Sciences of Matters, Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China
| | - Sovan Sundar Giri
- Frontier Research Center on Fundamental and Applied Sciences of Matters, Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China
| | - Liang-Yu Chen
- Department of Chemistry , National Cheng Kung University , Tainan 701 , Taiwan , Republic of China
| | - Mu-Jeng Cheng
- Department of Chemistry , National Cheng Kung University , Tainan 701 , Taiwan , Republic of China
| | - Rai-Shung Liu
- Frontier Research Center on Fundamental and Applied Sciences of Matters, Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China
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10
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Chen KH, Chiang YJ, Zhu JL. Rhodium-catalyzed cyclization of acceptor-substituted biphenyl α-diazoketones: a study of the substitution effect on chemoselectivity. Org Biomol Chem 2018; 16:8353-8364. [DOI: 10.1039/c8ob01489b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A range of biphenyl α-diazoketones containing different α-electron withdrawing groups exhibits divergent chemoselectivity toward rhodium(ii) catalysis, delivering phenanthrols, benz[α]azulenones, aromatic ketones and/or 1,2-diketones in varying ratios.
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Affiliation(s)
- Kuo-Hsin Chen
- Department of Chemistry
- National Dong Hwa University
- Hualien 97401
- R.O.C
| | - Yi-Jung Chiang
- Department of Chemistry
- National Dong Hwa University
- Hualien 97401
- R.O.C
| | - Jia-Liang Zhu
- Department of Chemistry
- National Dong Hwa University
- Hualien 97401
- R.O.C
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11
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Transition Metal-Catalysed Intramolecular Carbenoid C−H Insertion for Pyrrolidine Formation by Decomposition of α-Diazoesters. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700840] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Wang H, Zhou CY, Che CM. Cobalt-Porphyrin-Catalyzed Intramolecular Buchner Reaction and Arene Cyclopropanation of In Situ Generated Alkyl Diazomethanes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700205] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haixu Wang
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong People's Republic of China
- HKU Shenzhen Institute of Research & Innovation; Shenzhen People's Republic of China
| | - Cong-Ying Zhou
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong People's Republic of China
- HKU Shenzhen Institute of Research & Innovation; Shenzhen People's Republic of China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong People's Republic of China
- HKU Shenzhen Institute of Research & Innovation; Shenzhen People's Republic of China
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13
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Manchoju A, Pansare SV. Catalytic Undirected Intermolecular C–H Functionalization of Arenes with 3-Diazofuran-2,4-dione: Synthesis of 3-Aryl Tetronic Acids, Vulpinic Acid, Pinastric Acid, and Methyl Isoxerocomate. Org Lett 2016; 18:5952-5955. [DOI: 10.1021/acs.orglett.6b03087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Amarender Manchoju
- Department of Chemistry, Memorial University, St. John’s, Newfoundland, Canada, A1B 3X7
| | - Sunil V. Pansare
- Department of Chemistry, Memorial University, St. John’s, Newfoundland, Canada, A1B 3X7
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14
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Deadman BJ, O'Mahony RM, Lynch D, Crowley DC, Collins SG, Maguire AR. Taming tosyl azide: the development of a scalable continuous diazo transfer process. Org Biomol Chem 2016; 14:3423-31. [DOI: 10.1039/c6ob00246c] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In situ generation and use of tosyl azide in flow enables enhanced safety and ready scale-up in diazo transfer processes.
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Affiliation(s)
- Benjamin J. Deadman
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Rosella M. O'Mahony
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Denis Lynch
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Daniel C. Crowley
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Stuart G. Collins
- Department of Chemistry
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
| | - Anita R. Maguire
- Department of Chemistry and School of Pharmacy
- Analytical and Biological Chemistry Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Ireland
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15
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Huang P, Xu J. Synthesis of 2-oxophosphorindolines via the copper-catalyzed intramolecular aromatic C–H insertion of diazophosphonamidates. RSC Adv 2016. [DOI: 10.1039/c6ra10555f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
2-Ethoxy-2-oxophosphorindolines, benzo-γ-phospholactams, were synthesized efficiently with up to 97% yield through the copper-catalyzed intramolecular aromatic C–H insertion of diazophosphonamidates.
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Affiliation(s)
- Peipei Huang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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16
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Chen X, Hu X, Bai S, Deng Y, Jiang H, Zeng W. Rh(III)-Catalyzed [4 + 2] Annulation of Indoles with Diazo Compounds: Access to Pyrimido[1,6-a]indole-1(2H)-ones. Org Lett 2015; 18:192-5. [DOI: 10.1021/acs.orglett.5b03231] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xun Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xinwei Hu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Siyi Bai
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yuanfu Deng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Wei Zeng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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17
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1093] [Impact Index Per Article: 121.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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18
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Zhang D, Gao F, Nian Y, Zhou Y, Jiang H, Liu H. Palladium-catalyzed picolinamide-directed coupling of C(sp(2))-H and C(sp(2))-H: a straightforward approach to quinolinone and pyridone scaffolds. Chem Commun (Camb) 2015; 51:7509-11. [PMID: 25838056 DOI: 10.1039/c5cc00298b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An unprecedented palladium-catalyzed picolinamide-directed coupling of C(sp(2))-H and C(sp(2))-H has been developed with exclusive formation of the six-membered ring heterocyclics - quinolinone and pyridone. The method employs cyclic hypervalent iodine as oxidant and features good functional-group tolerance. Another advantage of this reaction is that sequential C-H/C-H and C-H/N-H coupling could be achieved.
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Affiliation(s)
- Dengyou Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China.
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19
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Bernardim B, Hardman-Baldwin AM, Burtoloso ACB. LED lighting as a simple, inexpensive, and sustainable alternative for Wolff rearrangements. RSC Adv 2015. [DOI: 10.1039/c4ra15670f] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The Wolff rearrangement suffers from many drawbacks with respect to its practical execution in the laboratory. Herein, commercial LED lamps are employed as a sustainable alternative for the classic protocols typically used for Wolff rearrangements.
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Affiliation(s)
- Barbara Bernardim
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brasil
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20
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Somai Magar KB, Lee YR. Ruthenium(II)-Catalyzed Protocol for Preparation of Diverse α,β- and β,β-Dihaloenones from Diazodicarbonyls. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400348] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Zhang X, Lei M, Zhang YN, Hu LH. Rh-catalyzed intramolecular aromatic C–H insertion of α-diazo β-ketoesters: synthesis of 4-carbonyl chroman derivatives. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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