1
|
Cardoza S, Shrivash MK, Das P, Tandon V. Strategic Advances in Sequential C-Arylations of Heteroarenes. J Org Chem 2020; 86:1330-1356. [PMID: 33356264 DOI: 10.1021/acs.joc.0c02151] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sequence-specific C-arylation strategies have important applications in medicinal and material research. These strategies allow C-C bond formations in a regioselective manner to synthesize large molecular libraries for studying structure-activity profiles. The past decade has seen the development of single C-C bond forming reactions using various transition-metal catalysts, cryogenic metalation strategies, and metal-free methods. Sequential arylations of heterocycles allow for the formation of multiaryl derivatives and are a preferred choice over de novo synthetic routes. This perspective sheds light on recent strategic advances to develop various sequential synthetic routes for the multiarylation of heteroarenes. This perspective addresses many challenges in optimizing sequential routes with respect to catalysts, reaction parameters, and various strategies adopted to obtain diversely arylated products.
Collapse
Affiliation(s)
- Savio Cardoza
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Manoj Kumar Shrivash
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India.,Department of Applied Sciences, Indian Institute of Information Technology, Allahabad 211012, India
| | - Parthasarathi Das
- Department of Chemistry, Indian Institute of Technology (ISM), Dhanbad 826004, India
| | - Vibha Tandon
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| |
Collapse
|
2
|
Hedir S, De Giorgi M, Fogha J, De Pascale M, Weiswald LB, Brotin E, Marekha B, Denoyelle C, Denis C, Suzanne P, Gautier F, Juin P, Ligat L, Lopez F, Carlier L, Legay R, Bureau R, Rault S, Poulain L, Oliveira Santos JSD, Voisin-Chiret AS. Structure-guided design of pyridoclax derivatives based on Noxa / Mcl-1 interaction mode. Eur J Med Chem 2018; 159:357-380. [PMID: 30308410 DOI: 10.1016/j.ejmech.2018.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/28/2018] [Accepted: 10/01/2018] [Indexed: 11/18/2022]
Abstract
Protein-protein interactions are attractive targets because they control numerous cellular processes. In oncology, apoptosis regulating Bcl-2 family proteins are of particular interest. Apoptotic cell death is controlled via PPIs between the anti-apoptotic proteins hydrophobic groove and the pro-apoptotic proteins BH3 domain. In ovarian carcinoma, it has been previously demonstrated that Bcl-xL and Mcl-1 cooperate to protect tumor cells against apoptosis. Moreover, Mcl-1 is a key regulator of cancer cell survival and is a known resistance factor to Bcl-2/Bcl-xL pharmacological inhibitors making it an attractive therapeutic target. Here, using a structure-guided design from the oligopyridine lead Pyridoclax based on Noxa/Mcl-1 interaction we identified a new derivative, active at lower concentration as compared to Pyridoclax. This new derivative selectively binds to the Mcl-1 hydrophobic groove and releases Bak and Bim from Mcl-1 to induce cell death and sensitize cancer cells to Bcl-2/Bcl-xL targeting strategies.
Collapse
Affiliation(s)
- Siham Hedir
- Normandie Univ, UNICAEN, Inserm U1086 ANTICIPE «Interdisciplinary Research Unit for Cancer Prevention and Treatment», Biology and Innovative Therapeutics for Ovarian Cancers Group (BioTICLA), Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France; UNICANCER, Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France
| | - Marcella De Giorgi
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Jade Fogha
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Martina De Pascale
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Louis-Bastien Weiswald
- Normandie Univ, UNICAEN, Inserm U1086 ANTICIPE «Interdisciplinary Research Unit for Cancer Prevention and Treatment», Biology and Innovative Therapeutics for Ovarian Cancers Group (BioTICLA), Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France; UNICANCER, Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France
| | - Emilie Brotin
- Normandie Univ, UNICAEN, Inserm U1086 ANTICIPE «Interdisciplinary Research Unit for Cancer Prevention and Treatment», Biology and Innovative Therapeutics for Ovarian Cancers Group (BioTICLA), Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France; UNICANCER, Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France
| | - Bogdan Marekha
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Christophe Denoyelle
- Normandie Univ, UNICAEN, Inserm U1086 ANTICIPE «Interdisciplinary Research Unit for Cancer Prevention and Treatment», Biology and Innovative Therapeutics for Ovarian Cancers Group (BioTICLA), Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France; UNICANCER, Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France
| | - Camille Denis
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Peggy Suzanne
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Fabien Gautier
- Team 8 "Stress adaptation and tumor escape", CRCINA, UMR 1232 INSERM, Université de Nantes, Université d'Angers, Institut de Recherche en Santé-Université de Nantes, Nantes, France; ICO site René Gauducheau, Boulevard Jacques Monod, Saint Herblain, 44805, France
| | - Philippe Juin
- Team 8 "Stress adaptation and tumor escape", CRCINA, UMR 1232 INSERM, Université de Nantes, Université d'Angers, Institut de Recherche en Santé-Université de Nantes, Nantes, France; ICO site René Gauducheau, Boulevard Jacques Monod, Saint Herblain, 44805, France
| | - Laetitia Ligat
- INSERM UMR1037-Plateforme Protéomique-Pôle Technologique du Centre de Recherches en Cancérologie de Toulouse, 2 avenue Hubert Curien, 31100 Toulouse, France; Université Toulouse III-Paul Sabatier, UMR1037 CRCT, 31000 Toulouse, France
| | - Frédéric Lopez
- INSERM UMR1037-Plateforme Protéomique-Pôle Technologique du Centre de Recherches en Cancérologie de Toulouse, 2 avenue Hubert Curien, 31100 Toulouse, France; Université Toulouse III-Paul Sabatier, UMR1037 CRCT, 31000 Toulouse, France
| | - Ludovic Carlier
- Sorbonne Université, Ecole normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules (LBM), 75005 Paris, France
| | - Rémi Legay
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Ronan Bureau
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Sylvain Rault
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France
| | - Laurent Poulain
- Normandie Univ, UNICAEN, Inserm U1086 ANTICIPE «Interdisciplinary Research Unit for Cancer Prevention and Treatment», Biology and Innovative Therapeutics for Ovarian Cancers Group (BioTICLA), Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France; UNICANCER, Centre de Lutte Contre le Cancer F. Baclesse, 3 avenue du Général Harris, 14076, Caen, France.
| | - Jana Sopková-de Oliveira Santos
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France.
| | - Anne Sophie Voisin-Chiret
- Normandie Univ, UNICAEN, EA 4258 CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie) - FR CNRS INC3M, Caen, France.
| |
Collapse
|
3
|
Almond-Thynne J, Blakemore DC, Pryde DC, Spivey AC. Site-selective Suzuki-Miyaura coupling of heteroaryl halides - understanding the trends for pharmaceutically important classes. Chem Sci 2017; 8:40-62. [PMID: 28451148 PMCID: PMC5304707 DOI: 10.1039/c6sc02118b] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/04/2016] [Indexed: 12/22/2022] Open
Abstract
Suzuki-Miyaura cross-coupling reactions of heteroaryl polyhalides with aryl boronates are surveyed. Drawing on data from literature sources as well as bespoke searches of Pfizer's global chemistry RKB and CAS Scifinder® databases, the factors that determine the site-selectivity of these reactions are discussed with a view to rationalising the trends found.
Collapse
Affiliation(s)
- Joshua Almond-Thynne
- Department of Chemistry , Imperial College London , South Kensington Campus , London , SW& 2AZ , UK .
| | - David C Blakemore
- Pfizer Worldwide Medicinal Chemistry , The Portway Building, Granta Park, Great Abington , Cambridge , CB21 6GS , UK
| | - David C Pryde
- Pfizer Worldwide Medicinal Chemistry , The Portway Building, Granta Park, Great Abington , Cambridge , CB21 6GS , UK
| | - Alan C Spivey
- Department of Chemistry , Imperial College London , South Kensington Campus , London , SW& 2AZ , UK .
| |
Collapse
|
4
|
Błachut D, Szawkało J, Czarnocki Z. A convenient route to symmetrically and unsymmetrically substituted 3,5-diaryl-2,4,6-trimethylpyridines via Suzuki-Miyaura cross-coupling reaction. Beilstein J Org Chem 2016; 12:835-45. [PMID: 27340474 PMCID: PMC4901938 DOI: 10.3762/bjoc.12.82] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 04/08/2016] [Indexed: 12/25/2022] Open
Abstract
A series of differently substituted 3,5-diaryl-2,4,6-trimethylpyridines were prepared and characterized using the Suzuki-Miyaura coupling reaction with accordingly selected bromo-derivatives and arylboronic acids. The reaction conditions were carefully optimized allowing high yield of isolated products and also the construction of unsymmetrically substituted diarylpyridines, difficult to access by other methods.
Collapse
Affiliation(s)
- Dariusz Błachut
- Forensic Laboratory, Internal Security Agency, 1 Sierpnia 30A, 02-134 Warsaw, Poland, Tel.: +48 693830760
| | - Joanna Szawkało
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Zbigniew Czarnocki
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| |
Collapse
|
5
|
Al-Zoubi RM, Al-Jammal WK, El-Khateeb MY, McDonald R. Synthesis of Diiodinated Biphenyls and Iodinatedmeta-Terphenyls by Regioselective Suzuki-Miyaura Cross-Coupling Reactions of 5-Substituted 1,2,3-Triiodobenzenes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500263] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
6
|
Cross-coupling study of iodo/chloropyridines and 2-chloroquinoline with atom-economic triarylbismuth reagents under Pd-catalysis. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
7
|
Khajuria R, Kannaboina P, Kapoor KK, Gupta A, Raina G, Jassal AK, Rana LK, Hundal MS, Das P. Divergent synthesis of 4,6-diarylated pyridin-2(1H)-ones from chalcones: novel access to 2,4,6-triaryl pyridines. Org Biomol Chem 2015; 13:5944-54. [DOI: 10.1039/c5ob00545k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A wide range of 4,6-diarylated-2(1H)-one derivatives were synthesized in excellent yields from chalcones in one pot. Further the designed 4,6-diarylated pyridin-2(1H)-one derivatives have been successfully utilized in synthesizing 2,4,6-triarylpyridines.
Collapse
Affiliation(s)
- Rajni Khajuria
- Department of Chemistry
- University of Jammu
- Jammu 180006
- India
| | - Prakash Kannaboina
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Medicinal Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
| | | | - Annah Gupta
- Department of Chemistry
- University of Jammu
- Jammu 180006
- India
| | - Gaurav Raina
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Medicinal Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
| | | | - Love Karan Rana
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar 143005
- India
| | | | - Parthasarathi Das
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Medicinal Chemistry Division
- Indian Institute of Integrative Medicine (CSIR)
| |
Collapse
|
8
|
Doebelin C, Wagner P, Bihel F, Humbert N, Kenfack CA, Mely Y, Bourguignon JJ, Schmitt M. Fully Regiocontrolled Polyarylation of Pyridine. J Org Chem 2014; 79:908-18. [DOI: 10.1021/jo402200q] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Christelle Doebelin
- Laboratoire
d’Innovation Thérapeutique, UMR7200 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Patrick Wagner
- Laboratoire
d’Innovation Thérapeutique, UMR7200 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Frédéric Bihel
- Laboratoire
d’Innovation Thérapeutique, UMR7200 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Nicolas Humbert
- Laboratoire
de Biophotonique et Pharmacologie, UMR7213 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Cyril Assongo Kenfack
- Laboratoire
d’Optique et Applications, Centre de Physique Atomique Moléculaire
et Optique Quantique, Faculté des Sciences, Université de Douala, BP 8580 Douala, Cameroon
| | - Yves Mely
- Laboratoire
de Biophotonique et Pharmacologie, UMR7213 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Jean-Jacques Bourguignon
- Laboratoire
d’Innovation Thérapeutique, UMR7200 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Martine Schmitt
- Laboratoire
d’Innovation Thérapeutique, UMR7200 CNRS-Université de Strasbourg, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| |
Collapse
|
9
|
ortho-(Dimesitylboryl)phenylphosphines: Positive Boryl Effect in the Palladium-Catalyzed Suzuki-Miyaura Coupling of 2-Chloropyridines. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201100] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
10
|
Wang K, Fu Q, Zhou R, Zheng X, Fu H, Chen H, Li R. Tetraphosphine/palladium-catalyzed Suzuki-Miyaura coupling of heteroaryl halides with 3-pyridine- and 3-thiopheneboronic acid: an efficient catalyst for the formation of biheteroaryls. Appl Organomet Chem 2013. [DOI: 10.1002/aoc.2965] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kun Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| | - Qi Fu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| | - Rong Zhou
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| | - Hua Chen
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, Department of Chemistry; Sichuan University; Chengdu; Sichuan; 610064; People's Republic of China
| |
Collapse
|
11
|
Reactions of Pyridines, Benzopyridines, and Azapyridines with Organomagnesiums and Organolithiums. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/7081_2012_96] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
|
12
|
Peters M, Trobe M, Tan H, Kleineweischede R, Breinbauer R. A modular synthesis of teraryl-based α-helix mimetics, part 1: Synthesis of core fragments with two electronically differentiated leaving groups. Chemistry 2013; 19:2442-9. [PMID: 23292813 DOI: 10.1002/chem.201203005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 11/12/2012] [Indexed: 01/12/2023]
Abstract
Teraryl-based α-helix mimetics have proven to be useful compounds for the inhibition of protein-protein interactions (PPI). We have developed a modular and flexible approach for the synthesis of teraryl-based α-helix mimetics. Central to our strategy is the use of a benzene core unit featuring two leaving groups of differentiated reactivity in the Pd-catalyzed cross-coupling used for terphenyl assembly. With the halogen/diazonium route and the halogen/triflate route, two strategies have successfully been established. The synthesis of core building blocks with aliphatic (Ala, Val, Leu, Ile), aromatic (Phe), polar (Cys, Lys), hydrophilic (Ser, Gln), and acidic (Glu) amino acid side chains are reported.
Collapse
Affiliation(s)
- Martin Peters
- Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | | | | | | | | |
Collapse
|
13
|
Rossi R, Bellina F, Lessi M. Selective Palladium-Catalyzed Suzuki-Miyaura Reactions of Polyhalogenated Heteroarenes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100942] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
14
|
el Hajjouji H, Belmonte E, García-López J, Fernández I, Iglesias MJ, Roces L, García-Granda S, El Laghdach A, López Ortiz F. Transformations of diphenylphosphinothioic acid tertiary amides mediated by directed ortho metallation. Org Biomol Chem 2012; 10:5647-58. [DOI: 10.1039/c2ob25395j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
15
|
|
16
|
Malik I, Ahmed Z, Reimann S, Ali I, Villinger A, Langer P. Synthesis and Photophysical Properties of Alkynylated Pyrimidines by Site-Selective Sonogashira Reactions of 2,4,5,6-Tetrachloropyrimidine; First Synthesis of Tetraalkynyl-pyrimidines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001622] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
17
|
Recent Progress on the Halogen Dance Reaction on Heterocycles. TOPICS IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1007/7081_2011_64] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
18
|
Miller RE, Rantanen T, Ogilvie KA, Groth U, Snieckus V. Combined directed ortho metalation-halogen dance (HD) synthetic strategies. HD-anionic ortho fries rearrangement and double HD sequences. Org Lett 2010; 12:2198-201. [PMID: 20397661 DOI: 10.1021/ol100493v] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general and efficient directed ortho metalation (DoM)-halogen dance (HD)-electrophile quench sequence for the synthesis of trisubstituted pyridyl O-carbamates is described. A second HD sequence furnishes highly functionalized tetrasubstituted pyridines. Furthermore, a hitherto unobserved double HD rearrangement is reported. Under similar LDA conditions, aromatic O-carbamates with OMe, Cl, and F substituents (4a-c) undergo either a HD-electrophile quench sequence, 4a-c --> 18-20, or a HD-anionic ortho Fries rearrangement, 4a-c --> 6a-c, respectively.
Collapse
Affiliation(s)
- Ricarda E Miller
- Fachbereich Chemie and Konstanz Research School of Chemical Biology, Universität Konstanz, Fach 720, D-78457 Konstanz, Germany
| | | | | | | | | |
Collapse
|
19
|
Siddle JS, Batsanov AS, Caldwell ST, Cooke G, Bryce MR. Divergent synthesis of arylated pyridin-2(1H)-one derivatives via metal-catalysed cross-coupling processes. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.108] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|