51
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Li G, Yan Y, Zhang P, Xu X, Jin Z. Palladium-Catalyzed meta-Selective C–H Functionalization by Noncovalent H-Bonding Interaction. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02974] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Guoshuai Li
- State Key Laboratory of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yifei Yan
- State Key Laboratory of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Pengfei Zhang
- State Key Laboratory of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaohua Xu
- State Key Laboratory of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhong Jin
- State Key Laboratory of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Enviromental Science, Kashi University, Kashgar 844007, China
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52
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Bhattacharya T, Dutta S, Maiti D. Deciphering the Role of Silver in Palladium-Catalyzed C–H Functionalizations. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02552] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Trisha Bhattacharya
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Subhabrata Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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53
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Muthuraja P, Usman R, Sajeev R, Gopinath P. Controlled meta-Selective C-H Mono- and Di-Olefination of Mandelic Acid Derivatives. Org Lett 2021; 23:6014-6018. [PMID: 34279109 DOI: 10.1021/acs.orglett.1c02080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mandelic acids represent a key structural motif present in many drug molecules. Herein, we report the controlled meta-selective mono- and diolefination of mandelic acids by the careful design of the substrate and oxidant. Furthermore, free meta-functionalized mandelic acid was generated by selectively removing the template under mild basic conditions. The synthesis of functionalized homatropine and cyclandelate drug derivatives was demonstrated. Kinetic isotope effects revealed C-H activation as the rate-limiting step.
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Affiliation(s)
- Perumal Muthuraja
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Rahamdil Usman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Revathy Sajeev
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Purushothaman Gopinath
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
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54
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Wu Z, Fatuzzo N, Dong G. Palladium/norbornene-catalyzed distal alkenyl C-H arylation and alkylation of cis-olefins. Tetrahedron 2021; 90. [PMID: 34690377 DOI: 10.1016/j.tet.2021.132173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this full article, a detailed study of a distal alkenyl C-H arylation and alkylation through the palladium/norbornene (NBE) cooperative catalysis is described. Both aminopyridine- and oxime ether-type directing groups have been found effective for this transformation, allowing functionalization of diverse allyl amines and homoallyl alcohols. In addition, the C5,C6-substititued NBEs show optimal reactivity and selectivity. Various cis-olefins can be transformed to the corresponding arylated or alkylated trisubstituted alkenes with excellent regio- and stereoselectivity. Preliminary mechanistic studies support the Catellani pathway instead of the Heck pathway.
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Affiliation(s)
- Zhao Wu
- Department of Chemistry, The University of Chicago, 5735 S Ellis Ave, Chicago, IL, 60637, USA
| | - Nina Fatuzzo
- Department of Chemistry, The University of Chicago, 5735 S Ellis Ave, Chicago, IL, 60637, USA
| | - Guangbin Dong
- Department of Chemistry, The University of Chicago, 5735 S Ellis Ave, Chicago, IL, 60637, USA
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55
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Dutta U, Maiti S, Bhattacharya T, Maiti D. Arene diversification through distal C(sp
2
)−H functionalization. Science 2021; 372:372/6543/eabd5992. [DOI: 10.1126/science.abd5992] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/07/2021] [Indexed: 01/01/2023]
Affiliation(s)
- Uttam Dutta
- Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sudip Maiti
- Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | | | - Debabrata Maiti
- Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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56
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Wu Z, Wei F, Wan B, Zhang Y. Pd-Catalyzed ipso, meta-Dimethylation of ortho-Substituted Iodoarenes via a Base-Controlled C-H Activation Cascade with Dimethyl Carbonate as the Methyl Source. J Am Chem Soc 2021; 143:4524-4530. [PMID: 33750128 DOI: 10.1021/jacs.0c13057] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A methyl group can have a profound impact on the pharmacological properties of organic molecules. Hence, developing methylation methods and methylating reagents is essential in medicinal chemistry. We report a palladium-catalyzed dimethylation reaction of ortho-substituted iodoarenes using dimethyl carbonate as a methyl source. In the presence of K2CO3 as a base, iodoarenes are dimethylated at the ipso- and meta-positions of the iodo group, which represents a novel strategy for meta-C-H methylation. With KOAc as the base, subsequent oxidative C(sp3)-H/C(sp3)-H coupling occurs; in this case, the overall transformation achieves triple C-H activation to form three new C-C bonds. These reactions allow expedient access to 2,6-dimethylated phenols, 2,3-dihydrobenzofurans, and indanes, which are ubiquitous structural motifs and essential synthetic intermediates of biologically and pharmacologically active compounds.
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Affiliation(s)
- Zhuo Wu
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Feng Wei
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Bin Wan
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
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57
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Gou XY, Li Y, Luan YY, Shi WY, Wang CT, An Y, Zhang BS, Liang YM. Ruthenium-Catalyzed Radical Cyclization/meta-Selective C–H Alkylation of Arenes via σ-Activation Strategy. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00359] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xue-Ya Gou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yuke Li
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Yu-Yong Luan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yang An
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Bo-Sheng Zhang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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58
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Zhu ZF, Chen GL, Liu F. Ruthenium-catalysed meta-selective C Ar-H bond alkylation via a deaminative strategy. Chem Commun (Camb) 2021; 57:3411-3414. [PMID: 33687414 DOI: 10.1039/d1cc00039j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The use of aliphatic amines as alkylating reagents in organic synthesis via C-N bond activation remains underdeveloped. We herein describe a novel ruthenium-catalysed and directing-group assisted protocol for the synthesis of meta-alkylated arenes via dual C-H and C-N activation. Bench-stable and easily handled redox-active Katritzky pyridinium salts derived from abundant amines and amino acid species were used as alkyl radical precursors. This catalytic reaction could accommodate a broad range of functional groups and provide access to various meta-alkylated products.
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Affiliation(s)
- Ze-Fan Zhu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China.
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59
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Imine as a linchpin approach for meta-C-H functionalization. Nat Commun 2021; 12:1393. [PMID: 33654108 PMCID: PMC7925593 DOI: 10.1038/s41467-021-21633-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 01/25/2021] [Indexed: 12/02/2022] Open
Abstract
Despite the widespread applications of C–H functionalization, controlling site selectivity remains a significant challenge. Covalently attached directing groups (DGs) served as ancillary ligands to ensure ortho-, meta- and para-C–H functionalization over the last two decades. These covalently linked DGs necessitate two extra steps for a single C–H functionalization: introduction of DG prior to C–H activation and removal of DG post-functionalization. Here we report a temporary directing group (TDG) for meta-C–H functionalization via reversible imine formation. By overruling facile ortho-C–H bond activation by imine-N atom, a suitably designed pyrimidine-based TDG successfully delivered selective meta-C–C bond formation. Application of this temporary directing group strategy for streamlining the synthesis of complex organic molecules without any necessary pre-functionalization at the meta position has been explored. Site-selective C–H functionalization still faces some challenges, such as the introduction and removal of an appropriate directing group. Here, the authors introduce a temporary directing group for selective meta-C–H functionalization of 2-arylbenzaldehydes via reversible imine formation.
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60
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Tóth BL, Monory A, Egyed O, Domján A, Bényei A, Szathury B, Novák Z, Stirling A. The ortho effect in directed C-H activation. Chem Sci 2021; 12:5152-5163. [PMID: 34163752 PMCID: PMC8179598 DOI: 10.1039/d1sc00642h] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 02/20/2021] [Indexed: 12/12/2022] Open
Abstract
The success of transition metal-catalysed ortho-directed C-H activation is often plagued by the effects of undesirable interactions between the directing group (DG) and other groups introduced into the aromatic core of the substrate. In particular, when these groups are in neighbouring positions, their interactions can affect profoundly the efficacy of the C-H activation by transition metals. In this work we introduce a simple substrate-only-based model to interpret the influence of steric hindrance of a group in ortho position to the DG in directed ortho-C-H bond activation reactions, and coined the term Ortho Effect (OE) for such situations. We consider simple descriptors such as torsion angle and torsional energy to predict and explain the reactivity of a given substrate in directed C-H activation reactions. More than 250 examples have been invoked for the model, and the nature of the ortho effect was demonstrated on a wide variety of structures. In order to guide organic chemists, we set structural and energetic criteria to evaluate a priori the efficiency of the metalation step which is usually the rate-determining event in C-H activations, i.e. we provide a simple and general protocol to estimate the reactivity of a potential substrate in C-H activation. For borderline cases these criteria help set the minimum reaction temperature to obtain reasonable reaction rates. As an example for the practical applicability of the model, we performed synthetic validations via palladium-catalysed 2,2,2-trifluoroethylation reactions in our lab. Furthermore, we give predictions for the necessary reaction conditions for several selected DGs.
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Affiliation(s)
- Balázs L Tóth
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Faculty of Science, Institute of Chemistry, Eötvös Loránd University Pázmány Péter Sétány. 1/A H-1117 Budapest Hungary
| | - Anna Monory
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Faculty of Science, Institute of Chemistry, Eötvös Loránd University Pázmány Péter Sétány. 1/A H-1117 Budapest Hungary
| | - Orsolya Egyed
- Research Centre for Natural Sciences, Eötvös Loránd Research Network Magyar Tudósok Körútja 2 H-1117 Budapest Hungary
| | - Attila Domján
- Research Centre for Natural Sciences, Eötvös Loránd Research Network Magyar Tudósok Körútja 2 H-1117 Budapest Hungary
| | - Attila Bényei
- Department of Physical Chemistry, University of Debrecen Egyetem Tér 1 H-4032 Debrecen Hungary
| | - Bálint Szathury
- Department of Chemistry, University of Cambridge Lensfield Rd Cambridge CB2 1EW UK
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Faculty of Science, Institute of Chemistry, Eötvös Loránd University Pázmány Péter Sétány. 1/A H-1117 Budapest Hungary
| | - András Stirling
- Research Centre for Natural Sciences, Eötvös Loránd Research Network Magyar Tudósok Körútja 2 H-1117 Budapest Hungary
- Department of Chemistry, Eszterházy Károly University Leányka u. 6 H-3300 Eger Hungary
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61
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Strategic evolution in transition metal-catalyzed directed C–H bond activation and future directions. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213683] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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62
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Affiliation(s)
- Rashid Ali
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Rafia Siddiqui
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
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63
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Dhawa U, Kaplaneris N, Ackermann L. Green strategies for transition metal-catalyzed C–H activation in molecular syntheses. Org Chem Front 2021. [DOI: 10.1039/d1qo00727k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Sustainable strategies for the activation of inert C–H bonds towards improved resource-economy.
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Affiliation(s)
- Uttam Dhawa
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Nikolaos Kaplaneris
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
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64
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Carvalho RL, Almeida RG, Murali K, Machado LA, Pedrosa LF, Dolui P, Maiti D, da Silva Júnior EN. Removal and modification of directing groups used in metal-catalyzed C–H functionalization: the magical step of conversion into ‘conventional’ functional groups. Org Biomol Chem 2021; 19:525-547. [DOI: 10.1039/d0ob02232b] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This feature review is focused on recent approaches for removing versatile directing groups.
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Affiliation(s)
- Renato L. Carvalho
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Renata G. Almeida
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Karunanidhi Murali
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Luana A. Machado
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | | | - Pravas Dolui
- Department of Chemistry
- IIT Bombay
- Mumbai 400076
- India
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65
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Wang S, Yu B, Liu HM. Pd(II)-Catalyzed Intramolecular C(sp2)–H Arylation of Tryptamines Using the Nonsteric NH2 as a Directing Group. Org Lett 2020; 23:42-48. [DOI: 10.1021/acs.orglett.0c03668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sixi Wang
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou 450001, China
| | - Bin Yu
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou 450001, China
| | - Hong-Min Liu
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou 450001, China
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66
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Choi I, Müller V, Wang Y, Xue K, Kuniyil R, Andreas LB, Karius V, Alauzun JG, Ackermann L. Recyclable Ruthenium Catalyst for Distal meta-C-H Activation. Chemistry 2020; 26:15290-15297. [PMID: 32770682 PMCID: PMC7756437 DOI: 10.1002/chem.202003622] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Indexed: 01/28/2023]
Abstract
We disclose the unprecedented hybrid-ruthenium catalysis for distal meta-C-H activation. The hybrid-ruthenium catalyst was recyclable, as was proven by various heterogeneity tests, and fully characterized with various microscopic and spectroscopic techniques, highlighting the physical and chemical stability. Thereby, the hybrid-ruthenium catalysis proved broadly applicable for meta-C-H alkylations of among others purine-based nucleosides and natural product conjugates. Additionally, its versatility was further reflected by meta-C-H activations through visible-light irradiation, as well as para-selective C-H activations.
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Affiliation(s)
- Isaac Choi
- Institut für Organische und Biomolekulare Chemie andWöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstraße 237077GöttingenGermany
| | - Valentin Müller
- Institut für Organische und Biomolekulare Chemie andWöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstraße 237077GöttingenGermany
| | - Yanhui Wang
- Institut Charles Gerhardt MontpellierUMR 5253CNRS-Université de Montpellier-ENSCMMontpellier Cedex 534095France
| | - Kai Xue
- Max Planck Institute for Biophysical ChemistryAm Faßberg 1137077GöttingenGermany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie andWöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstraße 237077GöttingenGermany
| | - Loren B. Andreas
- Max Planck Institute for Biophysical ChemistryAm Faßberg 1137077GöttingenGermany
| | - Volker Karius
- Geowissenschaftliches ZentrumGeorg-August-Universität GöttingenGoldschmidtstraße 337077GöttingenGermany
| | - Johan G. Alauzun
- Institut Charles Gerhardt MontpellierUMR 5253CNRS-Université de Montpellier-ENSCMMontpellier Cedex 534095France
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie andWöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstraße 237077GöttingenGermany
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67
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Li G, An J, Jia C, Yan B, Zhong L, Wang J, Yang S. m-CAr–H Bond Alkylations and Difluoromethylation of Tertiary Phosphines Using a Ruthenium Catalyst. Org Lett 2020; 22:9450-9455. [DOI: 10.1021/acs.orglett.0c03377] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gang Li
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P. R. China
| | - Jiangzhen An
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P. R. China
| | - Chunqi Jia
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
| | - Bingxu Yan
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P. R. China
| | - Lei Zhong
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P. R. China
| | - Junjie Wang
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P. R. China
| | - Suling Yang
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P. R. China
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68
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Li G, Gao Y, Jia C, Wang S, Yan B, Fang Y, Yang S. Meta-Dehydrogenative Alkylation of Arenes with Ethers, Ketones, and Esters Catalyzed by Ruthenium. Org Lett 2020; 22:8758-8763. [PMID: 33151082 DOI: 10.1021/acs.orglett.0c02698] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A meta-dehydrogenative alkylation of arenes with cyclic ethers, ketones, and esters catalyzed by ruthenium is achieved in the presence of a di-tert-butyl peroxide (DTBP) oxidant. Interestingly, when quinoline and isoquinoline are employed as the directing group, or a chain ether as alkylation reagent, the system produces Minisci reaction products. Mechanistic study indicates that meta-dehydrogenative alkylation is a radical process initiated by DTBP with the assistance of a CAr-Ru bond ortho/para-directing effect.
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Affiliation(s)
- Gang Li
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P.R. China
| | - Yuan Gao
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P.R. China
| | - Chunqi Jia
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Shichong Wang
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P.R. China
| | - Bingxu Yan
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P.R. China
| | - Yu Fang
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P.R. China
| | - Suling Yang
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455002, P.R. China
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69
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Jiang W, Xu M, Yang S, Xie X, Xiao B. Alkylation‐Terminated Catellani Reactions Using Alkyl Carbagermatranes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei‐Tao Jiang
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Meng‐Yu Xu
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Shuo Yang
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Xiu‐Ying Xie
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Bin Xiao
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
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70
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Sasmal S, Dutta U, Lahiri GK, Maiti D. Transition Metals and Transition Metals/Lewis Acid Cooperative Catalysis for Directing Group Assisted para-C–H Functionalization. CHEM LETT 2020. [DOI: 10.1246/cl.200500] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sheuli Sasmal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Uttam Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
- Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, Tokyo 152-8550, Japan
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71
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Li R, Dong G. Structurally Modified Norbornenes: A Key Factor to Modulate Reaction Selectivity in the Palladium/Norbornene Cooperative Catalysis. J Am Chem Soc 2020; 142:17859-17875. [PMID: 33016072 DOI: 10.1021/jacs.0c09193] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Palladium/norbornene (Pd/NBE) cooperative catalysis has received enormous attention and found numerous synthetic applications in the past two decades. Considering the critical roles that NBE plays in the catalytic cycle, the use of structurally modified NBEs (smNBEs), starting from 2015, has become an important approach to address limitations and modulate reaction selectivity in Pd/NBE catalysis. This Perspective highlights the development of three types of smNBEs: C1-substituted, C2-substituted, and C5-substituted or C5,C6-disubstituted NBEs, as well as their synthetic applications toward site-selective C-H functionalization. A focus is on the structure-activity relationship of smNBEs in these reactions, and rationales for using smNBEs in many cases have also been provided.
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Affiliation(s)
- Renhe Li
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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72
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Cai L, Li S, Zhou C, Li G. Carboxyl-Assisted meta-Selective C-H Functionalizations of Benzylsulfonamides. Org Lett 2020; 22:7791-7796. [PMID: 32991192 DOI: 10.1021/acs.orglett.0c02528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A protocol of carboxyl-group-assisted, Pd(II)-catalyzed remote meta-C(sp2)-H olefination and arylation of benzylsulfonamides has been developed. It was supposed to proceed through a κ2 coordination of the carboxyl group to the Pd center. These findings demonstrated the versatility of carboxyl-assisted remote meta-C-H activation strategy and might stimulate the exploration of novel reactivity and selectivity of other traditional chelating groups in different contexts.
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Affiliation(s)
- Lei Cai
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,Fujian College, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shangda Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Chunlin Zhou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,Fujian College, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gang Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,Fujian College, University of Chinese Academy of Sciences, Beijing 100049, China
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73
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Dutta U, Porey S, Pimparkar S, Mandal A, Grover J, Koodan A, Maiti D. para
‐Selective Arylation of Arenes: A Direct Route to Biaryls by Norbornene Relay Palladation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005664] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Uttam Dutta
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Sandip Porey
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Sandeep Pimparkar
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Astam Mandal
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Jagrit Grover
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Adithyaraj Koodan
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
- Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science Tokyo Institute of Technology Tokyo 152-8550 Japan
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74
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Dutta U, Porey S, Pimparkar S, Mandal A, Grover J, Koodan A, Maiti D. para-Selective Arylation of Arenes: A Direct Route to Biaryls by Norbornene Relay Palladation. Angew Chem Int Ed Engl 2020; 59:20831-20836. [PMID: 32754958 DOI: 10.1002/anie.202005664] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/29/2020] [Indexed: 12/12/2022]
Abstract
Biaryl compounds are extremely important structural motifs in natural products, biologically active components and pharmaceuticals. Selective synthesis of biaryls by distinguishing the subtle reactivity difference of distal arene C-H bonds are significantly challenging. Herein, we describe para-selective C-H arylation, which is acheived by a unique combination of a meta-directing group and norbornene as a transient mediator. Upon direct meta-C-H palladation, one-bond relay palladation occurs in presence of norbornene and subsequently para-C-H arylation is achieved for sulfonates, phosphonates and phenols bearing 2,6-disubstitution patterns. The protocol is amenable to electron-deficient aryl iodides. Multisubstituted arenes and phenols are obtained by postsynthetic modification of the products. The protocol allows the synthesis of hexa-substituted benzene by sequential selective distal C-H functionalization.
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Affiliation(s)
- Uttam Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Sandeep Pimparkar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Astam Mandal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Jagrit Grover
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Adithyaraj Koodan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.,Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, Tokyo, 152-8550, Japan
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75
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Jayarajan R, Chandrashekar HB, Dalvi AK, Maiti D. Ultrasound-Facilitated Direct meta-C-H Functionalization of Arenes: A Time-Economical Strategy under Ambient Temperature with Improved Yield and Selectivity. Chemistry 2020; 26:11426-11430. [PMID: 32289187 DOI: 10.1002/chem.202001757] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Indexed: 02/03/2023]
Abstract
The horizon of ultrasound-assistance has been expanded to palladium-catalyzed distal C-H functionalization of arenes. Compared to thermal conditions, operationally simple ultrasound mediated distal C-H functionalization occurred with a shorter reaction time and enhanced reactivity of reactants to give superior yields with improved selectivity both in terms of meta:others and mono:di. A wide variety of meta-functionalizations such as olefination, alkylation, acetoxylation, allylation and cyanation were successfully carried out under ambient temperature.
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Affiliation(s)
- Ramasamy Jayarajan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | | | - Aishwarya K Dalvi
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.,Tokyo Tech World Research Hub Initiative (WRHI), Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, Tokyo, 152-8550, Japan
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76
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Jiang W, Xu M, Yang S, Xie X, Xiao B. Alkylation‐Terminated Catellani Reactions Using Alkyl Carbagermatranes. Angew Chem Int Ed Engl 2020; 59:20450-20454. [DOI: 10.1002/anie.202008482] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/20/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Wei‐Tao Jiang
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Meng‐Yu Xu
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Shuo Yang
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Xiu‐Ying Xie
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Bin Xiao
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
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77
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Lv W, Chen Y, Wen S, Ba D, Cheng G. Modular and Stereoselective Synthesis of C-Aryl Glycosides via Catellani Reaction. J Am Chem Soc 2020; 142:14864-14870. [PMID: 32808778 DOI: 10.1021/jacs.0c07634] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this work, we describe a Catellani-type C-H glycosylation to provide rapid access to various highly decorated α-C-(hetero)aryl glycosides in a modular and stereoselective manner (>90 examples). The termination step is flexible, which is demonstrated by ipso-Heck reaction, hydrogenation, Suzuki coupling, and Sonogashira coupling. Application of this methodology has been showcased by preparing glycoside-pharmacophore conjugates and a dapagliflozin analogue. Notably, the technology developed herein represents an unprecedented example of Catellani-type alkylation involving an SN1 pathway.
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Affiliation(s)
- Weiwei Lv
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Yanhui Chen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Si Wen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Dan Ba
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Guolin Cheng
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
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78
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Zhang BS, Li Y, Gou XY, Zhang Z, An Y, Wang XG, Liang YM. DMAP and PivOH-promoted amination/allenization reaction. Chem Commun (Camb) 2020; 56:9202-9205. [PMID: 32661547 DOI: 10.1039/d0cc03749d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This report described the first DMAP and PivOH-promoted ortho-C-H amination and ipso-allenization reaction of iodobenzenes realized by Pd/norbornene cooperative catalysis. Based on control experiments and DFT calculations, we speculated that the three ligands have different functions and mechanism paths in the reaction.
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Affiliation(s)
- Bo-Sheng Zhang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
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79
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Pimparkar S, Bhattacharya T, Maji A, Saha A, Jayarajan R, Dutta U, Lu G, Lupton DW, Maiti D. Para-Selective Cyanation of Arenes by H-Bonded Template. Chemistry 2020; 26:11558-11564. [PMID: 32196777 DOI: 10.1002/chem.202001368] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Indexed: 12/31/2022]
Abstract
The significance of site selective functionalization stands upon the superior selectivity, easy synthesis and diverse product utility. In this work, we demonstrate the para-selective introduction of versatile nitrile moiety, enabled by a detachable and reusable H-bonded auxiliary. The methodology holds its efficiency irrespective of substrate electronic bias. The conspicuous shift in the step energetics was probed by both experimental and computational mechanistic tools, which heralds the inception of para-deuteration. The synthetic impact of the methodology was highlighted with reusability of directing group and post synthetic modifications.
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Affiliation(s)
- Sandeep Pimparkar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.,IITB-Monash Research Academy, Near estate office, IIT Bombay Powai, Mumbai, 400076, India.,School of Chemistry, Monash University, Clayton, VIC 3168, Australia
| | - Trisha Bhattacharya
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Arun Maji
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Argha Saha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Ramasamy Jayarajan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Uttam Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.,IITB-Monash Research Academy, Near estate office, IIT Bombay Powai, Mumbai, 400076, India.,School of Chemistry, Monash University, Clayton, VIC 3168, Australia
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - David W Lupton
- IITB-Monash Research Academy, Near estate office, IIT Bombay Powai, Mumbai, 400076, India.,School of Chemistry, Monash University, Clayton, VIC 3168, Australia
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.,Tokyo Tech World Research Hub Initiative (WRHI), Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, R1-104, 4259 Nagatsutacho, Midori-ku, Yokohama, 226-8503, Japan
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80
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Liu L, Qiao JX, Yeung K, Ewing WR, Yu J. meta
‐Selective C−H Arylation of Fluoroarenes and Simple Arenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002865] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Luo‐Yan Liu
- Department of Chemistry The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Jennifer X. Qiao
- Discovery Chemistry Bristol-Myers Squibb PO Box 4000 Princeton NJ 08543 USA
| | - Kap‐Sun Yeung
- Discovery Chemistry Bristol-Myers Squibb Research and Development 100 Binney Street Cambridge MA 02142 USA
| | - William R. Ewing
- Discovery Chemistry Bristol-Myers Squibb PO Box 4000 Princeton NJ 08543 USA
| | - Jin‐Quan Yu
- Department of Chemistry The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road La Jolla CA 92037 USA
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81
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Liu LY, Qiao JX, Yeung KS, Ewing WR, Yu JQ. meta-Selective C-H Arylation of Fluoroarenes and Simple Arenes. Angew Chem Int Ed Engl 2020; 59:13831-13835. [PMID: 32333462 PMCID: PMC7485903 DOI: 10.1002/anie.202002865] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/31/2020] [Indexed: 11/06/2022]
Abstract
Fluorine is known to promote ortho-C-H metalation. Based upon this reactivity, we employed an activated norbornene that traps the ortho-palladation intermediate and is then relayed to the meta position, leading to meta-selective C-H arylation of fluoroarenes. Deuterium experiment suggests that this meta-arylation is initiated by ortho C-H activation and the catalytic cycle is terminated by C-2 protonation. A dual-ligand system is crucial for the observed high reactivity and site selectivity. Applying this approach to simple benzene or other arenes also affords arylation products with good yield and site selectivity.
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Affiliation(s)
- Luo-Yan Liu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Jennifer X Qiao
- Discovery Chemistry, Bristol-Myers Squibb, PO Box 4000, Princeton, NJ, 08543, USA
| | - Kap-Sun Yeung
- Discovery Chemistry, Bristol-Myers Squibb Research and Development, 100 Binney Street, Cambridge, MA, 02142, USA
| | - William R Ewing
- Discovery Chemistry, Bristol-Myers Squibb, PO Box 4000, Princeton, NJ, 08543, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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82
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Wang J, Qin C, Lumb JP, Luan X. Regioselective Synthesis of Polyfunctional Arenes by a 4-Component Catellani Reaction. Chem 2020. [DOI: 10.1016/j.chempr.2020.06.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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83
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Liu R, Wei Y, Shi M. Rhodium(III)‐Catalyzed C−H Benzylation of Indole's C3 Position with Aza‐
o
‐Quinone Methides. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ruixing Liu
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 People's Republic of China
| | - Yin Wei
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 People's Republic of China
| | - Min Shi
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 People's Republic of China
- Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen Guangdong 518000 People's Republic of China
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84
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Kayashima Y, Komatsuda M, Muto K, Yamaguchi J. Pd-catalyzed C4-Dearomative Allylation of Benzyl Ammoniums with Allyltributylstannane. CHEM LETT 2020. [DOI: 10.1246/cl.200216] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuki Kayashima
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Masaaki Komatsuda
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Kei Muto
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
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85
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Transient Directing Group‐Assisted C─H Bond Functionalization of Aliphatic Amines: Strategies for Efficiency and Site‐Selectivity. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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86
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Wang K, Hou J, Zhang C, Cheng K, Bai R, Xie Y. Palladium‐Catalyzed Picolinamide‐Directed Benzylic C(
sp
3
)−H Chalcogenation with Diaryl Disulfides and Diphenyl Diselenide. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000280] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kai Wang
- Collaborative Innovation Center of Yangtze River Delta Region Green PharmaceuticalsZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Jiahao Hou
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Changjun Zhang
- Collaborative Innovation Center of Yangtze River Delta Region Green PharmaceuticalsZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Ke Cheng
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Renren Bai
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Yuanyuan Xie
- Collaborative Innovation Center of Yangtze River Delta Region Green PharmaceuticalsZhejiang University of Technology Hangzhou 310014 People's Republic of China
- College of Pharmaceutical ScienceZhejiang University of Technology Hangzhou 310014 People's Republic of China
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87
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Abstract
An unexpected ortho-Heck reaction has been discovered during the study of palladium/norbornene (Pd/NBE) catalysis. Under the Catellani reaction conditions in the presence of lithium salts and olefins, Heck coupling takes place at the ortho position instead of the commonly observed ipso position; meanwhile, a norbornyl group is introduced at the arene ipso position. Systematic deuterium labeling and crossover experiments suggest an unusual 1,4-palladium migration/intramolecular hydrogen transfer pathway. The knowledge gained in this study could provide insights for the future development of the Pd/NBE catalysis.
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Affiliation(s)
- Alexander J Rago
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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88
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Feng L, Wang T, Jia H, Huang J, Han D, Zhang W, Ding H, Xu Q, Du P, Zhu J. On-surface synthesis of planar acenes via regioselective aryl-aryl coupling. Chem Commun (Camb) 2020; 56:4890-4893. [PMID: 32236253 DOI: 10.1039/d0cc01043j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of 2,2'-dibromo-biphenyl on a Ag(111) surface leads to the formation of planar acenes with a high-regioselectivity rather than nonplanar saddle-shaped tetraphenylene as the typical product in solution chemistry. The regioselective aryl-aryl coupling reaction is attributed to the hydrogen repulsion between the reactants on the confined two-dimensional surface.
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Affiliation(s)
- Lin Feng
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Tao Wang
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Hongxing Jia
- Hefei National Laboratory of Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China.
| | - Jianmin Huang
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Dong Han
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Wenzhao Zhang
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Honghe Ding
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Qian Xu
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
| | - Pingwu Du
- Hefei National Laboratory of Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China.
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory, Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230029, China.
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89
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Affiliation(s)
- Aniket Gholap
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Sukdev Bag
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sukumar Pradhan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Anant R. Kapdi
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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90
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Affiliation(s)
- Quan Zheng
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chen‐Fu Liu
- College of Pharmaceutical ScienceGannan Medical University Ganzhou 341000 People's Republic of China
| | - Jie Chen
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Guo‐Wu Rao
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
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91
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Jia C, Wu N, Cai X, Li G, Zhong L, Zou L, Cui X. Ruthenium-Catalyzed meta-Selective C Ar-H Bond Formylation of Arenes. J Org Chem 2020; 85:4536-4542. [PMID: 32133850 DOI: 10.1021/acs.joc.0c00007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The meta-CAr-H bond formylation of arenes has been achieved using CHBr3 as a formyl source in the presence of [Ru(p-cym)(OAc)2] as a catalyst. This method provides efficient access to the preparation of various meta-substituted aromatic compounds, such as alcohols, ethers, amines, nitriles, alkenes, halogens, carboxylic acids, and their derivatives, through transformation of the versatile formyl group. Furthermore, mechanistic studies show that the key active species is a pentagonal ruthenacycle complex.
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Affiliation(s)
- Chunqi Jia
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
| | - Nini Wu
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455000, P. R. China
| | - Xiaofeng Cai
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455000, P. R. China
| | - Gang Li
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455000, P. R. China
| | - Lei Zhong
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455000, P. R. China
| | - Lei Zou
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455000, P. R. China
| | - Xiuling Cui
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
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92
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Fan Z, Bay KL, Chen X, Zhuang Z, Park HS, Yeung K, Houk KN, Yu J. Rational Development of Remote C−H Functionalization of Biphenyl: Experimental and Computational Studies. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhoulong Fan
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Katherine L. Bay
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Zhe Zhuang
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Han Seul Park
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Kap‐Sun Yeung
- Discovery Chemistry Bristol-Myers Squibb Research and Development 100 Binney Street Cambridge MA 02142 USA
| | - K. N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Jin‐Quan Yu
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
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93
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Fan Z, Bay KL, Chen X, Zhuang Z, Park HS, Yeung KS, Houk KN, Yu JQ. Rational Development of Remote C-H Functionalization of Biphenyl: Experimental and Computational Studies. Angew Chem Int Ed Engl 2020; 59:4770-4777. [PMID: 31943648 PMCID: PMC7064431 DOI: 10.1002/anie.201915624] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Indexed: 11/12/2022]
Abstract
A simple and efficient nitrile-directed meta-C-H olefination, acetoxylation, and iodination of biaryl compounds is reported. Compared to the previous approach of installing a complex U-shaped template to achieve a molecular U-turn and assemble the large-sized cyclophane transition state for the remote C-H activation, a synthetically useful phenyl nitrile functional group could also direct remote meta-C-H activation. This reaction provides a useful method for the modification of biaryl compounds because the nitrile group can be readily converted to amines, acids, amides, or other heterocycles. Notably, the remote meta-selectivity of biphenylnitriles could not be expected from previous results with a macrocyclophane nitrile template. DFT computational studies show that a ligand-containing Pd-Ag heterodimeric transition state (TS) favors the desired remote meta-selectivity. Control experiments demonstrate the directing effect of the nitrile group and exclude the possibility of non-directed meta-C-H activation. Substituted 2-pyridone ligands were found to be key in assisting the cleavage of the meta-C-H bond in the concerted metalation-deprotonation (CMD) process.
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Affiliation(s)
- Zhoulong Fan
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Katherine L Bay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Han Seul Park
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Kap-Sun Yeung
- Discovery Chemistry, Bristol-Myers Squibb Research and Development, 100 Binney Street, Cambridge, MA, 02142, USA
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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94
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Jia F, Luo J, Zhang B. Mechanistic Insight into Palladium‐Catalyzed Enantioselective Remote
meta
‐C−H Arylation and Alkylation by Using Density Functional Theory (DFT) Calculations. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Feiyun Jia
- School of Basic Medical SciencesNorth Sichuan Medical College Nanchong, Sichuan 637100 People's Republic of China
| | - Jiewei Luo
- School of Basic Medical SciencesNorth Sichuan Medical College Nanchong, Sichuan 637100 People's Republic of China
| | - Bo Zhang
- School of Basic Medical SciencesNorth Sichuan Medical College Nanchong, Sichuan 637100 People's Republic of China
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95
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Shi H, Lu Y, Weng J, Bay KL, Chen X, Tanaka K, Verma P, Houk KN, Yu JQ. Differentiation and functionalization of remote C-H bonds in adjacent positions. Nat Chem 2020; 12:399-404. [PMID: 32123338 PMCID: PMC7155936 DOI: 10.1038/s41557-020-0424-5] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 01/21/2020] [Indexed: 12/01/2022]
Abstract
Site-selective functionalization of C–H bonds will ultimately afford chemists transformative tools for editing and constructing complex molecular architectures. Towards this goal, developing strategies to activate C–H bonds that are distal from a functional group is essential. In this context, distinguishing remote C–H bonds on adjacent carbon atoms is an extraordinary challenge due to the lack of electronic or steric bias between the two positions. Herein, we report the design of a catalytic system leveraging a remote directing template and a transient norbornene mediator to selectively activate a previously inaccessible remote C–H bond that is one bond further away. The generality of this approach has been demonstrated with a range of heterocycles, including a complex anti-leukemia agent, and hydrocinnamic acid substrates.
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Affiliation(s)
- Hang Shi
- The Scripps Research Institute, La Jolla, CA, USA
| | - Yi Lu
- The Scripps Research Institute, La Jolla, CA, USA
| | - Jiang Weng
- The Scripps Research Institute, La Jolla, CA, USA
| | - Katherine L Bay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Keita Tanaka
- The Scripps Research Institute, La Jolla, CA, USA
| | - Pritha Verma
- The Scripps Research Institute, La Jolla, CA, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA.
| | - Jin-Quan Yu
- The Scripps Research Institute, La Jolla, CA, USA.
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96
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Liu L, Qiao JX, Ewing WR, Yeung K, Yu J. β
‐Selective C−H Arylation of Electron‐Deficient Thiophenes, Pyrroles, and Furans. Isr J Chem 2020. [DOI: 10.1002/ijch.201900134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Luo‐Yan Liu
- Department of ChemistryThe Scripps Research Institute (TSRI) 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Jennifer X. Qiao
- Discovery ChemistryBristol-Myers Squibb, PO Box 4000, Princeton New Jersey 08543 United States
| | - William R. Ewing
- Discovery ChemistryBristol-Myers Squibb, PO Box 4000, Princeton New Jersey 08543 United States
| | - Kap‐Sun Yeung
- Discovery ChemistryBristol-Myers Squibb Research and Development 100 Binney Street Cambridge MA 02142
| | - Jin‐Quan Yu
- Department of ChemistryThe Scripps Research Institute (TSRI) 10550 North Torrey Pines Road La Jolla CA 92037 USA
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97
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Anugu RR, Munnuri S, Falck JR. Picolinate-Directed Arene meta-C–H Amination via FeCl3 Catalysis. J Am Chem Soc 2020; 142:5266-5271. [DOI: 10.1021/jacs.9b13753] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Raghunath Reddy Anugu
- Division of Chemistry, Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Sailu Munnuri
- Division of Chemistry, Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - John R. Falck
- Division of Chemistry, Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
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98
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Govaerts S, Nyuchev A, Noel T. Pushing the boundaries of C–H bond functionalization chemistry using flow technology. J Flow Chem 2020. [DOI: 10.1007/s41981-020-00077-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
AbstractC–H functionalization chemistry is one of the most vibrant research areas within synthetic organic chemistry. While most researchers focus on the development of small-scale batch-type transformations, more recently such transformations have been carried out in flow reactors to explore new chemical space, to boost reactivity or to enable scalability of this important reaction class. Herein, an up-to-date overview of C–H bond functionalization reactions carried out in continuous-flow microreactors is presented. A comprehensive overview of reactions which establish the formal conversion of a C–H bond into carbon–carbon or carbon–heteroatom bonds is provided; this includes metal-assisted C–H bond cleavages, hydrogen atom transfer reactions and C–H bond functionalizations which involve an SE-type process to aromatic or olefinic systems. Particular focus is devoted to showcase the advantages of flow processing to enhance C–H bond functionalization chemistry. Consequently, it is our hope that this review will serve as a guide to inspire researchers to push the boundaries of C–H functionalization chemistry using flow technology.
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99
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Wu Z, Fatuzzo N, Dong G. Distal Alkenyl C-H Functionalization via the Palladium/Norbornene Cooperative Catalysis. J Am Chem Soc 2020; 142:2715-2720. [PMID: 31995370 PMCID: PMC7075342 DOI: 10.1021/jacs.9b11479] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A distal-selective alkenyl C-H arylation method is reported through a directed palladium/norbornene (Pd/NBE) cooperative catalysis. The key is to use an appropriate combination of the directing group and the NBE cocatalyst. A range of acyclic and cyclic cis-olefins are suitable substrates, and the reaction is operated under air with excellent site-selectivity. Preliminary mechanistic studies are consistent with the proposed Pd/NBE-catalyzed C-H activation instead of the Heck pathway. Initial success on distal alkylation has also been achieved using MeI and methyl bromoacetate as electrophiles.
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Affiliation(s)
- Zhao Wu
- Department of Chemistry , University of Chicago , Chicago , Illinois 60637 , United States
| | - Nina Fatuzzo
- Department of Chemistry , University of Chicago , Chicago , Illinois 60637 , United States
| | - Guangbin Dong
- Department of Chemistry , University of Chicago , Chicago , Illinois 60637 , United States
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100
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Yun YL, Yang J, Miao YH, Sun J, Wang XJ. Recent advances in Palladium(II)-catalyzed activation of aromatic ring C–H bonds. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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