501
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Wang Z, Reinus BJ, Dong G. Catalytic Intermolecular C-Alkylation of 1,2-Diketones with Simple Olefins: A Recyclable Directing Group Strategy. J Am Chem Soc 2012; 134:13954-7. [DOI: 10.1021/ja306123m] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Zhiqian Wang
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712,
United States
| | - Brandon J. Reinus
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712,
United States
| | - Guangbin Dong
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712,
United States
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502
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Funktionalisierung von C-H-Bindungen: neue Synthesemethoden für Naturstoffe und Pharmazeutika. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201666] [Citation(s) in RCA: 756] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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503
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Chan WW, Lo SF, Zhou Z, Yu WY. Rh-Catalyzed Intermolecular Carbenoid Functionalization of Aromatic C–H Bonds by α-Diazomalonates. J Am Chem Soc 2012; 134:13565-8. [DOI: 10.1021/ja305771y] [Citation(s) in RCA: 428] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Wai-Wing Chan
- State Key Laboratory for
Chirosciences and Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong
Kong
| | - Siu-Fung Lo
- State Key Laboratory for
Chirosciences and Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong
Kong
| | - Zhongyuan Zhou
- State Key Laboratory for
Chirosciences and Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong
Kong
| | - Wing-Yiu Yu
- State Key Laboratory for
Chirosciences and Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong
Kong
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504
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Synthesis of Indoles through Highly Efficient Cascade Reactions of Sulfur Ylides and N-(ortho-Chloromethyl)aryl Amides. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203657] [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]
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505
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Yang QQ, Xiao C, Lu LQ, An J, Tan F, Li BJ, Xiao WJ. Synthesis of Indoles through Highly Efficient Cascade Reactions of Sulfur Ylides and N-(ortho-Chloromethyl)aryl Amides. Angew Chem Int Ed Engl 2012; 51:9137-40. [DOI: 10.1002/anie.201203657] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Indexed: 11/09/2022]
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506
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Yamaguchi J, Yamaguchi AD, Itami K. CH Bond Functionalization: Emerging Synthetic Tools for Natural Products and Pharmaceuticals. Angew Chem Int Ed Engl 2012; 51:8960-9009. [DOI: 10.1002/anie.201201666] [Citation(s) in RCA: 2423] [Impact Index Per Article: 201.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Indexed: 01/04/2023]
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507
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Cárdenas RAV, Leal BOQ, Reddy A, Bandyopadhyay D, Banik BK. Microwave-assisted polystyrene sulfonate-catalyzed synthesis of novel pyrroles. Org Med Chem Lett 2012; 2:24. [PMID: 22726766 PMCID: PMC3534635 DOI: 10.1186/2191-2858-2-24] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 04/20/2012] [Indexed: 11/10/2022] Open
Abstract
Background Pyrroles are widely distributed in nature and important biologically active molecules. The reaction of amines with 2,5-dimethoxytetrahydrofuran is a promising pathway for the synthesis of pharmacologically active pyrroles under microwave irradiation. Results Microwave-induced polystyrenesulfonate-catalyzed synthesis of pyrroles from amines and 2,5-diemthoxytetrahydrofuran has been accomplished with excellent yield. This method produces pyrroles with polyaromatic amines. Conclusion The present procedure for the synthesis of N-aromatic substituted pyrroles will find useful application in the area of pharmacologically active molecules.
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508
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Huang JR, Dong L, Han B, Peng C, Chen YC. Synthesis of aza-fused polycyclic quinolines via double C-H bond activation. Chemistry 2012; 18:8896-900. [PMID: 22715023 DOI: 10.1002/chem.201201207] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Indexed: 11/09/2022]
Abstract
Simple but efficient: Aza-fused polycyclic quinolines were efficiently assembled through rhodium(III)-based direct double C-H activation of N-aryl azoles followed by cyclization with alkynes without heteroatom-assisted chelation. Copper(II) acetate, aside from acting as an oxidant, could also play an important role in the C-H activation process.
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Affiliation(s)
- Ji-Rong Huang
- Key Laboratory of Drug-Targeting and Drug Delivery Systems of the Ministry of Education, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, 17/3 South Renmin Road, Chengdu, 610041, PR China
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509
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Wei Y, Deb I, Yoshikai N. Palladium-catalyzed aerobic oxidative cyclization of N-aryl imines: indole synthesis from anilines and ketones. J Am Chem Soc 2012; 134:9098-101. [PMID: 22612535 DOI: 10.1021/ja3030824] [Citation(s) in RCA: 291] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report here an operationally simple, palladium-catalyzed cyclization reaction of N-aryl imines, affording indoles via the oxidative linkage of two C-H bonds under mild conditions using molecular oxygen as the sole oxidant. The process allows quick and atom-economical assembly of indole rings from inexpensive and readily available anilines and ketones and tolerates a broad range of functional groups.
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Affiliation(s)
- Ye Wei
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore
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510
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Yang Y, Lin Y, Rao Y. Ruthenium(II)-catalyzed synthesis of hydroxylated arenes with ester as an effective directing group. Org Lett 2012; 14:2874-7. [PMID: 22582921 DOI: 10.1021/ol301104n] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An unprecedented Ru(II) catalyzed ortho-hydroxylation has been developed for the facile synthesis of a variety of multifunctionalized arenes from easily accessible ethyl benzoates with ester as an efficient directing group. Both the TFA/TFAA cosolvent system and oxidants serve as the critical success factors in this transformation. The reaction demonstrates excellent reactivity, good functional group tolerance, and high yields.
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Affiliation(s)
- Yiqing Yang
- Department of Pharmacology and Pharmaceutical Sciences, School of Medicine and School of Life Sciences, Tsinghua University, Beijing 100084, China
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511
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Yamagishi M, Nishigai K, Ishii A, Hata T, Urabe H. Facile Preparation of Indoles and 1,2-Benzothiazine 1,1-Dioxides: Nucleophilic Addition of Sulfonamides to Bromoacetylenes and Subsequent Palladium-Catalyzed Cyclization. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201024] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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512
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Yamagishi M, Nishigai K, Ishii A, Hata T, Urabe H. Facile preparation of indoles and 1,2-benzothiazine 1,1-dioxides: nucleophilic addition of sulfonamides to bromoacetylenes and subsequent palladium-catalyzed cyclization. Angew Chem Int Ed Engl 2012; 51:6471-4. [PMID: 22581582 DOI: 10.1002/anie.201201024] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Indexed: 11/05/2022]
Abstract
Bromine as a double agent: The bromine atom in 1-bromo-1-alkynes works as an electron-withdrawing group to effect the nucleophilic addition of sulfonamides. It again plays a pivotal role in the palladium-catalyzed cyclization of the resultant (Z)-2-(sulfonylamino)-1-bromoalkenes into nitrogen heterocycles (see scheme).
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Affiliation(s)
- Masahito Yamagishi
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B-59 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
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513
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Morimoto K, Itoh M, Hirano K, Satoh T, Shibata Y, Tanaka K, Miura M. Synthesis of Fluorene Derivatives through Rhodium-Catalyzed Dehydrogenative Cyclization. Angew Chem Int Ed Engl 2012; 51:5359-62. [DOI: 10.1002/anie.201201526] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 03/23/2012] [Indexed: 11/07/2022]
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514
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Morimoto K, Itoh M, Hirano K, Satoh T, Shibata Y, Tanaka K, Miura M. Synthesis of Fluorene Derivatives through Rhodium-Catalyzed Dehydrogenative Cyclization. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201526] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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515
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Zhu C, Wang R, Falck JR. Amide-directed tandem C-C/C-N bond formation through C-H activation. Chem Asian J 2012; 7:1502-14. [PMID: 22492555 DOI: 10.1002/asia.201200035] [Citation(s) in RCA: 239] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Indexed: 11/08/2022]
Abstract
The transformation of C-H bonds into other chemical bonds is of great significance in synthetic chemistry. C-H bond-activation processes provide a straightforward and atom-economic strategy for the construction of complex structures; as such, they have attracted widespread interest over the past decade. As a prevalent directing group in the field of C-H activation, the amide group not only offers excellent regiodirecting ability, but is also a potential C-N bond precursor. As a consequence, a variety of nitrogen-containing heterocycles have been obtained by using these reactions. This Focus Review addresses the recent research into the amide-directed tandem C-C/C-N bond-formation process through C-H activation. The large body of research in this field over the past three years has established it as one of the most-important topics in organic chemistry.
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Affiliation(s)
- Chen Zhu
- Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9038, USA.
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516
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Li BJ, Wang HY, Zhu QL, Shi ZJ. Rhodium/Copper-Catalyzed Annulation of Benzimides with Internal Alkynes: Indenone Synthesis through Sequential CH and CN Cleavage. Angew Chem Int Ed Engl 2012; 51:3948-52. [DOI: 10.1002/anie.201200271] [Citation(s) in RCA: 291] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Indexed: 11/09/2022]
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517
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Li BJ, Wang HY, Zhu QL, Shi ZJ. Rhodium/Copper-Catalyzed Annulation of Benzimides with Internal Alkynes: Indenone Synthesis through Sequential CH and CN Cleavage. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200271] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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518
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Song G, Wang F, Li X. C-C, C-O and C-N bond formation via rhodium(III)-catalyzed oxidative C-H activation. Chem Soc Rev 2012; 41:3651-78. [PMID: 22377832 DOI: 10.1039/c2cs15281a] [Citation(s) in RCA: 2016] [Impact Index Per Article: 168.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Rhodium(III)-catalyzed direct functionalization of C-H bonds under oxidative conditions leading to C-C, C-N, and C-O bond formation is reviewed. Various arene substrates bearing nitrogen and oxygen directing groups are covered in their coupling with unsaturated partners such as alkenes and alkynes. The facile construction of C-E (E = C, N, S, or O) bonds makes Rh(III) catalysis an attractive step-economic approach to value-added molecules from readily available starting materials. Comparisons and contrasts between rhodium(III) and palladium(II)-catalyzed oxidative coupling are made. The remarkable diversity of structures accessible is demonstrated with various recent examples, with a proposed mechanism for each transformation being briefly summarized (critical review, 138 references).
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Affiliation(s)
- Guoyong Song
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
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519
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Schröder N, Besset T, Glorius F. Synthesis of Olefin-Oxazoline Ligands (OlefOx) by Rhodium(III)-Catalyzed Oxidative Olefination. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100711] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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520
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Soto S, Vaz E, Dell'Aversana C, Álvarez R, Altucci L, de Lera ÁR. New synthetic approach to paullones and characterization of their SIRT1 inhibitory activity. Org Biomol Chem 2012; 10:2101-12. [PMID: 22286328 DOI: 10.1039/c2ob06695e] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A series of 7,12-dihydroindolo[3,2-d][1]benzazepine-6(5H)-ones (paullones) substituted at C9/C10 (Br) and C2 (Me, CF(3), CO(2)Me) have been synthesized by a one-pot Suzuki-Miyaura cross-coupling of an o-aminoarylboronic acid and methyl 2-iodoindoleacetate followed by intramolecular amide formation. Other approaches to the paullone scaffold based on Pd-catalyzed C-H activation were unsuccessful. In vitro enzymatic assay with recombinant human SIRT-1 indicated a strong inhibitory profile for the series, in particular the analogue with a methoxycarbonyl group at C2 and a bromine at C9. These compounds are, in general, inducers of granulocyte differentiation of the U937 acute leukemia cell line and cause a marked increase in pre-G1 of the cell cycle.
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Affiliation(s)
- Sara Soto
- Departamento de Química Orgánica, Facultade de Química, Universidade de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain
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521
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Wencel-Delord J, Nimphius C, Patureau FW, Glorius F. [RhIIICp*]-katalysierte dehydrierende Aryl-Aryl-Bindungsknüpfung. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107842] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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522
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Wencel-Delord J, Nimphius C, Patureau FW, Glorius F. [RhIIICp*]-Catalyzed Dehydrogenative ArylAryl Bond Formation. Angew Chem Int Ed Engl 2012; 51:2247-51. [DOI: 10.1002/anie.201107842] [Citation(s) in RCA: 229] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Indexed: 01/14/2023]
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523
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Sharma S, Park E, Park J, Kim IS. Tandem Rh(III)-catalyzed oxidative acylation of secondary benzamides with aldehydes and intramolecular cyclization: the direct synthesis of 3-hydroxyisoindolin-1-ones. Org Lett 2012; 14:906-9. [PMID: 22263914 DOI: 10.1021/ol2034228] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The rhodium-catalyzed oxidative acylation between secondary benzamides and aryl aldehydes via sp(2) C-H bond activation followed by an intramolecular cyclization is described. This method results in the direct and efficient synthesis of 3-hydroxyisoindolin-1-one building blocks.
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Affiliation(s)
- Satyasheel Sharma
- Department of Chemistry, University of Ulsan, Ulsan, 680-749, Republic of Korea
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524
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Tauchert ME, Incarvito CD, Rheingold AL, Bergman RG, Ellman JA. Mechanism of the rhodium(III)-catalyzed arylation of imines via C-H bond functionalization: inhibition by substrate. J Am Chem Soc 2012; 134:1482-5. [PMID: 22257031 DOI: 10.1021/ja211110h] [Citation(s) in RCA: 159] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Rh(III)-catalyzed arylation of imines provides a new method for C-C bond formation while simultaneously introducing an α-branched amine as a functional group. This detailed mechanistic study provides insights for the rational future development of this new reaction. Relevant intermediate Rh(III) complexes have been isolated and characterized, and their reactivities in stoichiometric reactions with relevant substrates have been monitored. The reaction was found to be first order in the catalyst resting state and inverse first order in the C-H activation substrate.
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Affiliation(s)
- Michael E Tauchert
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA
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525
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Ackermann L, Lygin AV. Cationic Ruthenium(II) Catalysts for Oxidative C–H/N–H Bond Functionalizations of Anilines with Removable Directing Group: Synthesis of Indoles in Water. Org Lett 2012; 14:764-7. [DOI: 10.1021/ol203309y] [Citation(s) in RCA: 321] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Alexander V. Lygin
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
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526
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Xin X, Wang D, Li X, Wan B. Highly Regioselective Migration of the Sulfonyl Group: Easy Access to Functionalized Pyrroles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108144] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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527
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Xin X, Wang D, Li X, Wan B. Highly Regioselective Migration of the Sulfonyl Group: Easy Access to Functionalized Pyrroles. Angew Chem Int Ed Engl 2012; 51:1693-7. [DOI: 10.1002/anie.201108144] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Indexed: 11/11/2022]
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528
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Li Y, Zhang XS, Chen K, He KH, Pan F, Li BJ, Shi ZJ. N-Directing Group Assisted Rhodium-Catalyzed Aryl C–H Addition to Aryl Aldehydes. Org Lett 2012; 14:636-9. [DOI: 10.1021/ol2032784] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yang Li
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| | - Xi-Sha Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| | - Kang Chen
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| | - Ke-Han He
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| | - Fei Pan
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| | - Bi-Jie Li
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| | - Zhang-Jie Shi
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
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529
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Chinnagolla RK, Jeganmohan M. Regioselective synthesis of isocoumarins by ruthenium-catalyzed aerobic oxidative cyclization of aromatic acids with alkynes. Chem Commun (Camb) 2012; 48:2030-2. [PMID: 22227858 DOI: 10.1039/c2cc16916a] [Citation(s) in RCA: 216] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The highly regioselective aerobic oxidative cyclization of aromatic, heteroaromatic and alkenyl acids with alkynes in the presence of catalytic amounts of [{RuCl(2)(p-cymene)}(2)], AgSbF(6) and Cu(OAc)(2)·H(2)O providing isocoumarin derivatives was investigated.
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Affiliation(s)
- Ravi Kiran Chinnagolla
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
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530
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Kumar RK, Punniyamurthy T. Palladium-catalyzed aerobic oxidative C–H amination: synthesis of 2-unsubstituted and 2-substituted N-aryl benzimidazoles. RSC Adv 2012. [DOI: 10.1039/c2ra20328f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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531
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Zhao MN, Ren ZH, Wang YY, Guan ZH. Coupling of enamides with alkynes or arynes for synthesis of substituted pyridines and isoquinolines via amide activation. Chem Commun (Camb) 2012; 48:8105-7. [DOI: 10.1039/c2cc33768a] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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532
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Li Y, Zhang XS, Li H, Wang WH, Chen K, Li BJ, Shi ZJ. Mechanistic understanding of Rh-catalyzed N-sulfonylaldimine insertion into aryl C–H bonds. Chem Sci 2012. [DOI: 10.1039/c2sc01081j] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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533
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Ackermann L, Wang L, Lygin AV. Ruthenium-catalyzed aerobic oxidative coupling of alkynes with 2-aryl-substituted pyrroles. Chem Sci 2012. [DOI: 10.1039/c1sc00619c] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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534
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Li Z, Lu N, Wang L, Zhang W. Synthesis of Paullone and Kenpaullone Derivatives by Photocyclization of 2-(2-Chloro-1H-indol-3-yl)-N-arylacetamides. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101508] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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535
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Ng KH, Zhou Z, Yu WY. Rhodium(III)-Catalyzed Intermolecular Direct Amination of Aromatic C–H Bonds with N-Chloroamines. Org Lett 2011; 14:272-5. [DOI: 10.1021/ol203046n] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ka-Ho Ng
- State Key Laboratory for Chirosciences and The Open Laboratory for Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Zhongyuan Zhou
- State Key Laboratory for Chirosciences and The Open Laboratory for Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Wing-Yiu Yu
- State Key Laboratory for Chirosciences and The Open Laboratory for Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
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536
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Hyster TK, Rovis T. Pyridine synthesis from oximes and alkynes via rhodium(III) catalysis: Cp* and Cp(t) provide complementary selectivity. Chem Commun (Camb) 2011; 47:11846-8. [PMID: 21986995 PMCID: PMC3430144 DOI: 10.1039/c1cc15248c] [Citation(s) in RCA: 340] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The synthesis of pyridines from readily available α,β-unsaturated oximes and alkynes under mild conditions and low temperatures using Rh(III) catalysis has been developed. It was found that the use of sterically different ligands allows for complementary selectivities to be achieved.
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Affiliation(s)
- Todd K. Hyster
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523. Fax: (+1) 970-491-1801; Tel: (+1) 970-491-7208
| | - Tomislav Rovis
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523. Fax: (+1) 970-491-1801; Tel: (+1) 970-491-7208
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537
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Zhu C, Xie W, Falck JR. Rhodium-catalyzed annulation of N-benzoylsulfonamide with isocyanide through C-H activation. Chemistry 2011; 17:12591-5. [PMID: 21972033 PMCID: PMC3426457 DOI: 10.1002/chem.201102475] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/07/2011] [Indexed: 11/12/2022]
Abstract
Isocyanide insertion: the first rhodium-catalyzed annulation of N -benzoylsulfonamide incorporating with isocyanide via C-H activation is described. The transformation is broadly compatible with N -benzoylsulfonamides bearing various electron-properties as well as isocyanides. From practical point of view, this methodology provides the most straightforward approach to a series of 3-(imino)isoindolinones.
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Affiliation(s)
- Chen Zhu
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390-9038, USA.
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538
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Padala K, Jeganmohan M. Ruthenium-Catalyzed Ortho-Alkenylation of Aromatic Ketones with Alkenes by C–H Bond Activation. Org Lett 2011; 13:6144-7. [DOI: 10.1021/ol202580e] [Citation(s) in RCA: 233] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kishor Padala
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
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539
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Morimoto K, Hirano K, Satoh T, Miura M. Synthesis of isochromene and related derivatives by rhodium-catalyzed oxidative coupling of benzyl and allyl alcohols with alkynes. J Org Chem 2011; 76:9548-51. [PMID: 21988500 DOI: 10.1021/jo201923d] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The straightforward synthesis of isochromene derivatives and related cyclic ethers is achieved by the rhodium-catalyzed oxidative coupling of α,α-disubstituted benzyl and allyl alcohols with alkynes. The hydroxy groups effectively act as the key function for the regioselective C-H bond cleavage.
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Affiliation(s)
- Keisuke Morimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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540
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Lee PS, Fujita T, Yoshikai N. Cobalt-Catalyzed, Room-Temperature Addition of Aromatic Imines to Alkynes via Directed C–H Bond Activation. J Am Chem Soc 2011; 133:17283-95. [DOI: 10.1021/ja2047073] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Pin-Sheng Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Takeshi Fujita
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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541
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Tran DN, Cramer N. Enantioselective Rhodium(I)-Catalyzed [3+2] Annulations of Aromatic Ketimines Induced by Directed CH Activations. Angew Chem Int Ed Engl 2011; 50:11098-102. [DOI: 10.1002/anie.201105766] [Citation(s) in RCA: 181] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Indexed: 11/12/2022]
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542
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Tran DN, Cramer N. Enantioselective Rhodium(I)-Catalyzed [3+2] Annulations of Aromatic Ketimines Induced by Directed CH Activations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105766] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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543
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Li B, Feng H, Xu S, Wang B. Ruthenium-Catalyzed Isoquinolone Synthesis through CH Activation Using an Oxidizing Directing Group. Chemistry 2011; 17:12573-7. [DOI: 10.1002/chem.201102445] [Citation(s) in RCA: 278] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2011] [Indexed: 11/06/2022]
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544
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Li X, Zhao M. Rhodium(III)-Catalyzed Oxidative Coupling of 5-Aryl-1H-pyrazoles with Alkynes and Acrylates. J Org Chem 2011; 76:8530-6. [DOI: 10.1021/jo201530r] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xingwei Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Miao Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
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545
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Shibata Y, Tanaka K. Catalytic [2+2+1] Cross-Cyclotrimerization of Silylacetylenes and Two Alkynyl Esters To Produce Substituted Silylfulvenes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105517] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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546
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Yang F, Ji KG, Ali S, Liang YM. Sc(OTf)3-catalyzed synthesis of indoles and SnCl4-mediated regioselective hydrochlorination of 5-(arylamino)pent-3-yn-2-ones. J Org Chem 2011; 76:8329-35. [PMID: 21892834 DOI: 10.1021/jo201514q] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Highly substituted indole derivatives bearing alkyl and aryl moieties can be prepared by Sc(OTf)(3)-catalyzed Friedel-Crafts alkenylation of 5-(arylamino)pent-3-yn-2-ones. In addition, a method for regioselective hydrochlorination of 5-(arylamino)pent-3-yn-2-ones mediated by SnCl(4) in moderate to good yields (up to 84%) has been developed. The resulting exclusive Z-selectivity of the C-Cl bond can be further exploited using cross C-N coupling reactions.
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Affiliation(s)
- Fang Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Chinese Academy of Science, Lanzhou 730000, People's Republic of China
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547
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Shibata Y, Tanaka K. Catalytic [2+2+1] cross-cyclotrimerization of silylacetylenes and two alkynyl esters to produce substituted silylfulvenes. Angew Chem Int Ed Engl 2011; 50:10917-21. [PMID: 21922622 DOI: 10.1002/anie.201105517] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Yu Shibata
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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548
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Wrigglesworth JW, Cox B, Lloyd-Jones GC, Booker-Milburn KI. New heteroannulation reactions of N-alkoxybenzamides by Pd(II) catalyzed C-H activation. Org Lett 2011; 13:5326-9. [PMID: 21910404 DOI: 10.1021/ol202187h] [Citation(s) in RCA: 164] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A new palladium(II) catalyzed methodology for the direct synthesis of alkylidene isoindolinones from N-alkoxybenzamides is presented. Isoindolinone formation proceeds through a highly efficient and E-selective C-H activation/Heck/Aza-Wacker sequence. Substoichiometric amounts of benzoquinone can be employed in a cooperative oxidation system with O(2), leading to facile purification of products. Modification of the reaction conditions provides a general route to substituted phthalimides by carbonylation with CO. Both systems were found to tolerate a wide range of functionality.
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Affiliation(s)
- Joe W Wrigglesworth
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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549
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Zhou F, Han X, Lu X. Synthesis of indoles via palladium-catalyzed C–H activation of N-aryl amides followed by coupling with alkynes. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.07.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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550
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Song G, Gong X, Li X. Synthesis of Quinolines via Rh(III)-Catalyzed Oxidative Annulation of Pyridines. J Org Chem 2011; 76:7583-9. [DOI: 10.1021/jo201266u] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Guoyong Song
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xue Gong
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xingwei Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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