51
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Jiang ZT, Huang J, Zeng Y, Hu F, Xia Y. Rhodium Catalyzed Regioselective C-H Allylation of Simple Arenes via C-C Bond Activation of Gem-difluorinated Cyclopropanes. Angew Chem Int Ed Engl 2021; 60:10626-10631. [PMID: 33599074 DOI: 10.1002/anie.202016258] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/05/2021] [Indexed: 01/13/2023]
Abstract
Herein, we report a rhodium catalyzed directing-group free regioselective C-H allylation of simple arenes. Readily available gem-difluorinated cyclopropanes can be employed as highly reactive allyl surrogates via a sequence of C-C and C-F bond activation, providing allyl arene derivatives in good yields with high regioselectivity under mild conditions. The robust methodology enables facile late-stage functionalization of complex bioactive molecules. The high efficiency of this reaction is also demonstrated by the high turnover number (TON, up to 1700) of the rhodium catalyst on gram-scale experiments. Preliminary success on kinetic resolution of this transformation is achieved, providing a promising access to enantio-enriched gem-difluorinated cyclopropanes.
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Affiliation(s)
- Zhong-Tao Jiang
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610041, China
| | - Jiangkun Huang
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610041, China
| | - Yaxin Zeng
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610041, China
| | - Fangdong Hu
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, 276005, China
| | - Ying Xia
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, 610041, China
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52
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Wei W, Yu H, Zangarelli A, Ackermann L. Deaminative meta-C-H alkylation by ruthenium(ii) catalysis. Chem Sci 2021; 12:8073-8078. [PMID: 34194696 PMCID: PMC8208126 DOI: 10.1039/d1sc00986a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Precise structural modifications of amino acids are of importance to tune biological properties or modify therapeutical capabilities relevant to drug discovery. Herein, we report a ruthenium-catalyzed meta-C–H deaminative alkylation with easily accessible amino acid-derived Katritzky pyridinium salts. Likewise, remote C–H benzylations were accomplished with high levels of chemoselectivity and remarkable functional group tolerance. The meta-C–H activation approach combined with our deaminative strategy represents a rare example of selectively converting C(sp3)–N bonds into C(sp3)–C(sp2) bonds. Precise structural modifications of amino acids are of importance to tune biological properties or modify therapeutical capabilities relevant to drug discovery.![]()
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Affiliation(s)
- Wen Wei
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Goettingen Germany
| | - Hao Yu
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Goettingen Germany
| | - Agnese Zangarelli
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Goettingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Goettingen Germany .,Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Germany
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53
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Zhang ZZ, Liao G, Chen HM, Shi BF. Thioamide-Directed Cp*Co(III)-Catalyzed C-H Allylation of Ferrocenes. Org Lett 2021; 23:2626-2631. [PMID: 33711894 DOI: 10.1021/acs.orglett.1c00533] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Herein, the first Cp*Co(III)-catalyzed C-H allylation of ferrocene thioamides with allyl carbonates has been developed. This reaction is compatible with a wide range of functional groups, providing various allylated ferrocene derivatives in up to 90% yields. In addition, the C-H allylation protocol is also compatible with the use of vinylcyclopropanes as allylating reagents by merging C-H and C-C activation into one catalytic system. Mechanistic studies revealed that the thiocarbonyl-directing group plays a vital role in C-H activation.
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Affiliation(s)
- Zhuo-Zhuo Zhang
- School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan 610106, China
| | - Gang Liao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Hao-Ming Chen
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China.,Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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54
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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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55
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Dana S, Sureshbabu P, Giri CK, Baidya M. Ruthenium(II)‐Catalyzed C−H Activation/Annulation of Aromatic Hydroxamic Acid Esters with Enamides Leading to Aminal Motifs. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001632] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Suman Dana
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 Tamil Nadu India
| | - Popuri Sureshbabu
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 Tamil Nadu India
| | - Chandan Kumar Giri
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 Tamil Nadu India
| | - Mahiuddin Baidya
- Department of Chemistry Indian Institute of Technology Madras Chennai 600036 Tamil Nadu India
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56
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57
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Bhattacharya T, Ghosh A, Maiti D. Hexafluoroisopropanol: the magical solvent for Pd-catalyzed C-H activation. Chem Sci 2021; 12:3857-3870. [PMID: 34163654 PMCID: PMC8179444 DOI: 10.1039/d0sc06937j] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 01/19/2021] [Indexed: 12/28/2022] Open
Abstract
Among numerous solvents available for chemical transformations, 1,1,1,3,3,3-hexafluoro-2-propanol (popularly known as HFIP) has attracted enough attention of the scientific community in recent years. Several unique features of HFIP compared to its non-fluoro analogue isopropanol have helped this solvent to make a difference in various subdomains of organic chemistry. One such area is transition metal-catalyzed C-H bond functionalization reactions. While, on one side, HFIP is emerging as a green and sustainable deep eutectic solvent (DES), on the other side, a major proportion of Pd-catalyzed C-H functionalization is heavily relying on this solvent. In particular, for distal aromatic C-H functionalizations, the exceptional impact of HFIP to elevate the yield and selectivity has made this solvent irreplaceable. Recent research studies have also highlighted the H-bond-donating ability of HFIP to enhance the chiral induction in Pd-catalyzed atroposelective C-H activation. This perspective aims to portray different shades of HFIP as a magical solvent in Pd-catalyzed C-H functionalization reactions.
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Affiliation(s)
- Trisha Bhattacharya
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai Maharashtra 400076 India
| | - Animesh Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai Maharashtra 400076 India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai Maharashtra 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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58
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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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59
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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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60
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Zhan BB, Jia ZS, Luo J, Jin L, Lin XF, Shi BF. Palladium-Catalyzed Directed Atroposelective C-H Allylation via β-H Elimination: 1,1-Disubstituted Alkenes as Allyl Surrogates. Org Lett 2020; 22:9693-9698. [PMID: 33300801 DOI: 10.1021/acs.orglett.0c03757] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Transition-metal-catalyzed dehydrogenative C-H allylation with 1,1-disubstituted alkenes via β-H elimination remains challenging, because of the low reactivity and difficulty of controlling selectivity. Herein, the development of a Pd(II)-catalyzed directed atroposelective C-H allylation with methacrylates is described. Exclusive allylic selectivity was achieved. A vast array of axially chiral biaryl-2-amines are efficiently synthesized with excellent enantioselectivities (up to >99% enantiomeric excess).
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Affiliation(s)
- Bei-Bei Zhan
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Zhen-Sheng Jia
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, People's Republic of China
| | - Jun Luo
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Liang Jin
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Xu-Feng Lin
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, People's Republic of China
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61
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Fan WT, Li Y, Wang D, Ji SJ, Zhao Y. Iron-Catalyzed Highly para-Selective Difluoromethylation of Arenes. J Am Chem Soc 2020; 142:20524-20530. [PMID: 33252232 DOI: 10.1021/jacs.0c09545] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Direct functionalization of a C-H bond at either the meta or para position by only changing the catalyst system poses a significant challenge. We herein report the [Fe(TPP)Cl]-enabled, selective, C-H difluoromethylation of arenes using BrCF2CO2Et as the difluoromethylation source, which successfully altered the selectivity from the meta to the para position. A preliminary mechanistic study revealed the iron porphyrin complex not only activated the aromatic ring but also induced para selectivity due to the influence of ligand sterics.
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Affiliation(s)
- Wei-Tai Fan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Yuting Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Dongjie Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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62
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Lapuh MI, Mazeh S, Besset T. Chiral Transient Directing Groups in Transition-Metal-Catalyzed Enantioselective C–H Bond Functionalization. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03317] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Maria I. Lapuh
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Sara Mazeh
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
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63
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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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64
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Sun J, Yuan W, Tian R, Wang P, Zhang X, Li X. Rhodium(III)‐Catalyzed Asymmetric [4+1] and [5+1] Annulation of Arenes and 1,3‐Enynes: A Distinct Mechanism of Allyl Formation and Allyl Functionalization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010832] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jiaqiong Sun
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Weiliang Yuan
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Rong Tian
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Peiyuan Wang
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Xue‐Peng Zhang
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences Shandong University Qingdao 266237 China
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65
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Sun J, Yuan W, Tian R, Wang P, Zhang X, Li X. Rhodium(III)‐Catalyzed Asymmetric [4+1] and [5+1] Annulation of Arenes and 1,3‐Enynes: A Distinct Mechanism of Allyl Formation and Allyl Functionalization. Angew Chem Int Ed Engl 2020; 59:22706-22713. [DOI: 10.1002/anie.202010832] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Jiaqiong Sun
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Weiliang Yuan
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Rong Tian
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Peiyuan Wang
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Xue‐Peng Zhang
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences Shandong University Qingdao 266237 China
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66
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Rani G, Luxami V, Paul K. Traceless directing groups: a novel strategy in regiodivergent C-H functionalization. Chem Commun (Camb) 2020; 56:12479-12521. [PMID: 32985634 DOI: 10.1039/d0cc04863a] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The use of functional groups as internal ligands for assisting C-H functionalization, termed the chelation assisted strategy, is emerging as one of the most powerful tools for construction of C-C and C-X bonds from inert C-H bonds. However, there are various directing groups which cannot be either removed after functionalization or require some additional steps or reagents for their removal, thereby limiting the scope of structural diversity of the products, and the step and atom economy of the system. These limitations are overcome by the use of the traceless directing group (TDG) strategy wherein functionalization of the substrate and removal of the directing group can be carried out in a one pot fashion. Traceless directing groups serve as the most ideal chelation assisted strategy with a high degree of reactivity and selectivity without any requirement for additional steps for their removal. The present review overviews the use of various functional groups such as carboxylic acids, aldehydes, N-oxides, nitrones, N-nitroso amines, amides, sulfoxonium ylides and silicon tethered directing groups for assisting transition metal catalyzed C-H functionalization reactions in the last decade.
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Affiliation(s)
- Geetika Rani
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala-147001, India.
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67
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Yuan Y, Guo X, Zhang X, Li B, Huang Q. Access to 5H-benzo[a]carbazol-6-ols and benzo[6,7]cyclohepta[1,2-b]indol-6-ols via rhodium-catalyzed C–H activation/carbenoid insertion/aldol-type cyclization. Org Chem Front 2020. [DOI: 10.1039/d0qo00820f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The rhodium-catalyzed mono-ortho C–H activation/carbenoid insertion/aldol-type cyclization of 3-aldehyde-2-phenyl-1H-indoles with diazo compounds has been developed.
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Affiliation(s)
- Yumeng Yuan
- Fujian Key Laboratory of Polymer Materials
- College of Chemistry & Materials Science
- Fujian Normal University
- Fuzhou
- P.R. China
| | - Xiemin Guo
- Fujian Key Laboratory of Polymer Materials
- College of Chemistry & Materials Science
- Fujian Normal University
- Fuzhou
- P.R. China
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Materials
- College of Chemistry & Materials Science
- Fujian Normal University
- Fuzhou
- P.R. China
| | - Buhong Li
- MOE Key Laboratory of Optoelectronic Science and Technology for Medicine
- Fujian Key Laboratory for Photonics Technology
- Fujian Normal University
- Fuzhou
- P. R. China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Materials
- College of Chemistry & Materials Science
- Fujian Normal University
- Fuzhou
- P.R. China
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