1
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Zhu M, Wang P, Wu Z, Zhong Y, Su L, Xin Y, Spokoyny AM, Zou C, Mu X. A Pd-catalyzed route to carborane-fused boron heterocycles. Chem Sci 2024; 15:10392-10401. [PMID: 38994428 PMCID: PMC11234826 DOI: 10.1039/d4sc02214a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/28/2024] [Indexed: 07/13/2024] Open
Abstract
Due to the expanding applications of icosahedral carboranes in medicinal and materials chemistry research, their functionalizations have become one of the central themes in boron-rich cluster chemistry. Although several strategies for incorporating nitrogen-containing nucleophiles on a single boron vertex of the icosahedral carboranes (C2B10H12) have been developed, methods for preparing clusters with vicinal B-N moieties are still lacking. The steric bulk of icosahedral carboranes and disparate electronic and steric nature of the N-containing groups have rendered the vicinal diamination challenging. In this article, we show how a developed Pd-catalyzed process is used to incorporate an array of NH-heterocycles, anilines, and heteroanilines with various electronic and steric profiles onto the vicinal boron vertices of a meta-carborane cluster via sequential or one-pot fashion. Importantly, oxidative cyclizations of the cross-coupling products with indoles and pyrroles appended to boron vertices generate a previously unknown class of all-boron-vertex bound carborane-fused six- and seven-membered ring heterocycles. Photophysical studies of the meta-carborane-fused heterocycles show that these structures can exhibit luminescence with high quantum yields and are amenable to further manipulations.
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Affiliation(s)
- Mengjie Zhu
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology 130 Meilong Road 200237 Shanghai China
| | - Puzhao Wang
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology 130 Meilong Road 200237 Shanghai China
| | - Zhengqiu Wu
- Functional Coordination Material Group-Frontier Research Center, Songshan Lake Materials Laboratory, Dongguan Dongguan 523808 Guangdong China
| | - Yangfa Zhong
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology 130 Meilong Road 200237 Shanghai China
| | - Laiman Su
- School of Biotechnology, East China University of Science and Technology 130 Meilong Road 200237 Shanghai China
| | - Yuquan Xin
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology 130 Meilong Road 200237 Shanghai China
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry, University of California, Los Angeles 607 Charles E. Young Drive East Los Angeles California 90095 USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles Los Angeles California 90095 USA
| | - Chao Zou
- Functional Coordination Material Group-Frontier Research Center, Songshan Lake Materials Laboratory, Dongguan Dongguan 523808 Guangdong China
| | - Xin Mu
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology 130 Meilong Road 200237 Shanghai China
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2
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Ki Au Y, Ma Q, Zhang J, Xie Z. Ir-Catalyzed B(3)-Amination of o-Carboranes with Amines via Acceptorless Dehydrogenative BH/NH Cross-Coupling. Chem Asian J 2023; 18:e202300611. [PMID: 37694997 DOI: 10.1002/asia.202300611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 09/12/2023]
Abstract
An efficient and convenient strategy for Ir-catalyzed selective B(3)-amination of o-carboranes with amines via acceptorless BH/NH dehydrocoupling was developed, affording a series of B(3)-aminated-o-carboranes in moderate to high isolated yields with H2 gas as a sole by-product. Such an oxidant-free system endues the protocol sustainability, atom-economy and environmental friendliness. A reaction mechanism via an Ir(I)-Ir(III)-Ir(I) catalytic cycle involving oxidative addition, dehydrogenation and reductive elimination was proposed.
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Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
| | - Qiangqiang Ma
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P.R.China
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3
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Yu JW, Zhang CY, Chass GA, Zhang JX, Mu WH, Cao K. Pd-NHC catalysed regioselective activation of B(3,6)-H of o-carborane - a synergy between experiment and theory. Dalton Trans 2023; 52:10609-10620. [PMID: 37462420 DOI: 10.1039/d3dt01432k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Regioselective B-H activation of o-carboranes is an effective way for constructing o-carborane derivatives, which have broad applications in medicine, catalysis and the wider chemical industry. However, the mechanistic basis for the observed selectivities remains unresolved. Herein, a series of density functional theory (DFT) calculations were employed to characterise the palladium N-heterocyclic carbene (Pd-NHC) catalysed regioselective B(3,6)-diarylation of o-carboranes. Computational results at the IDSCRF(ether)-LC-ωPBE/BS1 and IDSCRF(ether)-LC-ωPBE/BS2 levels showed that the reaction undergoes a Pd(0) → Pd(II) → Pd(0) oxidation/reduction cycle, with the regioselective B(3)-H activation being the rate-determining step (RDS) for the full reaction profile. The computed RDS free energy barrier of 24.3 kcal mol-1 agrees well with the 82% yield of B(3,6)-diphenyl-o-carborane in ether solution at 298 K after 24 hours of reaction. The Ag2CO3 additive was shown to play a crucial role in lowering the RDS free energy barrier and facilitating the reaction. Natural charge population (NPA) and molecular surface electrostatic potential (ESP) analyses successfully predicted the experimentally observed regioselectivities, with electronic effects being revealed to be the dominant contributors to product selectivity. Steric hindrance was also shown to impact the reaction rate, as revealed by experimental and computational characterisation studies of substituents and ligand effects. Furthermore, computational predictions aligned with the experimental findings that NHC ligands outperform the phosphine ones for this particular reaction. Overall, the observed trends reported in this work are expected to assist in the rational optimisation of the efficiency and regioselectivity of this and related reactions.
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Affiliation(s)
- Jia-Wei Yu
- Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650092, China.
| | - Cai-Yan Zhang
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, China.
| | - Gregory A Chass
- School of Physical and Chemical Sciences, Queen Mary, University of London, London, E1 4NS, UK
- Department of Chemistry and Biological Chemistry, McMaster University, Hamilton, L8S 4L8, Canada
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver V6T 1Z4, Canada
| | - Jing-Xuan Zhang
- Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650092, China.
| | - Wei-Hua Mu
- Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650092, China.
| | - Ke Cao
- State Key Laboratory of Environment-friendly Energy Materials & School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, China.
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4
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Wei YM, Ma XD, Wang MF, Duan XF. Fe-Catalyzed Difunctionalization of Aryl Titanates Enabled by Fe/Ti Synergism. Org Lett 2023; 25:2745-2749. [PMID: 37036175 DOI: 10.1021/acs.orglett.3c00975] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
Fe-catalyzed difunctionalization of aryl titanates via double C-H activation has been developed, where aryl titanates were arylated via ortho C-H activation, followed by ipso electrophilic trapping of the C-Ti bond. The ortho C-H arylation should be promoted by a 1,2-Fe/Ti synergistic heterobimetallic arylene intermediate and represents an ortho C-H ferration directed by a readily transformable C-Ti group. Common benzamides, esters, and nitriles function as arylating reagents, which involves another ortho C-H activation directed by these functionalities.
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Affiliation(s)
- Yi-Ming Wei
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xiao-Di Ma
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Meng-Fei Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xin-Fang Duan
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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5
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Lu W, Wu Y, Ma YN, Chen F, Chen X. A Method for Highly Selective Halogenation of o-Carboranes and m-Carboranes. Inorg Chem 2023; 62:885-892. [PMID: 36584667 DOI: 10.1021/acs.inorgchem.2c03694] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A facile halogenation method for highly selective synthesis of 9-X-o-carboranes, 9,12-X2-o-carboranes, 9-X-12-X'-o-carboranes, 9-X-m-carboranes, 9,10-X2-m-carboranes, and 9-X-10-X'-m-carboranes (X, X' = Cl, Br, I) has been developed on the basis of our previous work. The success of this transformation relies on the usage of trifluoromethanesulfonic acid (HOTf), the easily available strong Brønsted acid. The addition of HOTf greatly increases the electrophilicity of N-haloamides through hydrogen bonding interaction, resulting in the low loading of N-haloamides, short reaction time, and mild reaction conditions. Additionally, the solvent 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) is also essential to further increase the acidity of HOTf.
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Affiliation(s)
- Wen Lu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yanxuan Wu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yan-Na Ma
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Feijing Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xuenian Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
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6
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Jia H, Qiu Z. Recent Advances in Transition Metal-Catalyzed B—H Bond Activation for Synthesis of o-Carborane Derivatives with B—Heteroatom Bond. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202211040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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7
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Li S, Zhang J, Xie Z. Visible-Light-Induced Palladium-Catalyzed Cross-Coupling of Iodocarboranes with (Hetero)Arenes. Org Lett 2022; 24:7497-7501. [PMID: 36201284 DOI: 10.1021/acs.orglett.2c02648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This work describes a general method for the efficient production of a class of cage B-centered carboranyl radicals at the B3, B4, and B9 sites via a visible-light-promoted palladium(0)/palladium(I) pathway using readily available iodo-o-carboranes as the starting materials. The electrophilicities of these hypervalent boron-centered radicals decrease in the following order: B3 > B4 > B9. They are useful intermediates for the preparation of a family of cage B-(hetero)arylated o-carboranes at ambient temperature.
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Affiliation(s)
- Shimeng Li
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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8
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Zhang LB, Xie Z. Iridium-Catalyzed Selective B(4)-H Amination of o-Carboranes with Anthranils. Org Lett 2022; 24:7077-7081. [PMID: 36148973 DOI: 10.1021/acs.orglett.2c02590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report here a catalytic selective cage B4-H amination of o-carboranes employing an Ir(III) complex as a catalyst and anthranils as aminating agents, leading to a large class of B4-aminated o-carboranes with very high yields and a broad substrate scope under mild conditions without any oxidants. In these reactions, the carboxyl group serves as a traceless directing unit to determine the site selectivity and degree of substitution.
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Affiliation(s)
- Lin-Bao Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.,State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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9
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Lyu H, Xie Z. Transition metal catalyzed selective B(3)-H or B(4)-H amination of o-carboranes via dehydrogenative BH/NH cross-coupling. Chem Commun (Camb) 2022; 58:8392-8395. [PMID: 35792563 DOI: 10.1039/d2cc02852b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A unique approach to vertex-selective catalytic B-H amination at either the B(3)- or B(4)-position in o-carboranes has been developed. Using different transition metal catalysts, dehydrogenative BH/NH cross-coupling of o-carboranes and free amines has been achieved, leading to a wide variety of cage B(3)- or B(4)-aminated o-carboranes in moderate to high yields with excellent regioselectivity, where carboranyl carboxylic acids and amines can serve as competent coupling partners without any pre-functionalization. The isolation and structural identification of a key intermediate provide an insight into the reaction mechanism in the catalytic B(4)-H amination.
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Affiliation(s)
- Hairong Lyu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, China.
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, China.
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10
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Tang W, He Y, Li H. Migration Mechanism of the B–H Activation of Carboranes. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wanyong Tang
- North Minzu University College of Chemistry and Chemical Engineering CHINA
| | - Yuhan He
- North Minzu University College of Chemistry and Chemical Engineering CHINA
| | - Hui Li
- North Minzu University Chemical science and engineering college No.204, North Wenchang Street, Xixia District, Yinchuan City, Ningxia, China 750021 Yinchuan CHINA
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11
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Jei BB, Yang L, Ackermann L. Selective Labeling of Peptides with o-Carboranes via Manganese(I)-Catalyzed C-H Activation. Chemistry 2022; 28:e202200811. [PMID: 35420234 PMCID: PMC9320968 DOI: 10.1002/chem.202200811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Indexed: 12/15/2022]
Abstract
A robust method for the selective labeling of peptides via manganese(I) catalysis was devised to achieve the C-2 alkenylation of tryptophan containing peptides with 1-ethynyl-o-carboranes. The manganese-catalyzed C-H activation was accomplished with high catalytic efficiency, and featured low toxicity, high functional group tolerance and excellent E-stereoselectivity. This approach unravels a promising tool for the assembly of o-carborane with structurally complex peptides of relevance to applications in boron neutron capture therapy.
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Affiliation(s)
- Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tamannstraße 2, 37077, Göttingen, Germany.,Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Long Yang
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tamannstraße 2, 37077, Göttingen, Germany.,Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tamannstraße 2, 37077, Göttingen, Germany.,Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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12
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Guo W, Guo C, Ma YN, Chen X. Practical Synthesis of B(9)-Halogenated Carboranes with N-Haloamides in Hexafluoroisopropanol. Inorg Chem 2022; 61:5326-5334. [PMID: 35311288 DOI: 10.1021/acs.inorgchem.2c00074] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The B(9)-H halogenation of o-carborane and m-carborane was achieved with excellent selectivities in hexafluoroisopropanol (HFIP) under simple reaction conditions: single reagent [trichloroisocyanuric acid (TCCA), tribromoisocyanuric acid (TBCA) or N-iodosuccinimide (NIS)], catalyst-free, air-/moisture-tolerant, and convenient work-up. With this method, a variety of 9-halogenated o-carboranes and m-carboranes were obtained in good to excellent yields with broad tolerance of functional groups.
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Affiliation(s)
- Wenjing Guo
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Chenyang Guo
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Shanghai 200032, China
| | - Yan-Na Ma
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Xuenian Chen
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450001, China
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13
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Ko GH, Lee JK, Han SH, Lee PH. Rhodium-Catalyzed B(4)-H and B(3)-H Alkylation Reaction of Pyridyl o-Carboranes with α-Diazodicarboxylates. Org Lett 2022; 24:1507-1512. [PMID: 35142522 DOI: 10.1021/acs.orglett.2c00187] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient Rh-catalyzed B(4)-H and B(3)-H alkylation reaction was demonstrated from the reactions of a variety of pyridyl o-carboranes with α-diazodicarboxylates with the release of molecular nitrogen, leading to the production of B(4)-H and B(3)-H alkylated o-carboranes in good to excellent yields with high selectivity, a wide substrate scope, and good functional group tolerance.
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Affiliation(s)
- Gi Hoon Ko
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Ji Kwon Lee
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Sang Hoon Han
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Phil Ho Lee
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea.,KIIT (Kangwon Institute of Inclusive Technology), Kangwon National University, Chuncheon 24341, Republic of Korea
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14
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Zhang LB, Xie Z. Iridium-Catalyzed Selective B(4)–H Acylmethylation of o-Carboranes with Sulfoxonium Ylides. Org Lett 2022; 24:1318-1322. [DOI: 10.1021/acs.orglett.1c04335] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lin-Bao Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China
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15
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Zhang J, Xie Z. Advances in transition metal catalyzed selective B H functionalization of o-carboranes. ADVANCES IN CATALYSIS 2022. [DOI: 10.1016/bs.acat.2022.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Lai H, Xu J, Lin J, Su B, Zha D. Chemo-selective control of Ritter-type reaction by coordinatively unsaturated inorganic salt hydrates. Org Chem Front 2022. [DOI: 10.1039/d1qo01832a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We used a readily available water source, MgSO4·2H2O, to realize the control of the chemo-selectivity of the Ritter-type reaction efficiently.
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Affiliation(s)
- Huifang Lai
- Department of Medicinal Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou 350004, Fujian Province, China
| | - Jiexin Xu
- Department of Medicinal Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou 350004, Fujian Province, China
| | - Jin Lin
- Department of Medicinal Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou 350004, Fujian Province, China
| | - Biling Su
- Department of Medicinal Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou 350004, Fujian Province, China
| | - Daijun Zha
- Department of Medicinal Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou 350004, Fujian Province, China
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fujian Medical University, China
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17
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Ge Y, Qiu Z, Xie Z. Pd-Catalyzed One-Pot Synthesis of Difunctionalized o-Carboranes via Construction of B—C and B—Heteroatom Bonds ※. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a21120597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Recent trends and tactics in facile functionalization of neutral icosahedral carboranes (C2B10H12) and nido-carborane (7,8-C2B9H12−). ADVANCES IN CATALYSIS 2022. [DOI: 10.1016/bs.acat.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Cheng B, Chen Y, Zhou P, Xie Z. Rhodium-catalyzed sequential B(3)-, B(4)-, and B(5)-trifunctionalization of o-carboranes with three different substituents. Chem Commun (Camb) 2021; 58:629-632. [PMID: 34913450 DOI: 10.1039/d1cc05936j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A rhodium-catalyzed one-pot trifunctionalization of o-carboranes with three different substituents via a carboxy group directed sequential B(5)-alkenylation, B(4)-alkyne annulation and B(3)-acyloxylation has been developed for the first time, leading to the synthesis of a new class of B(3,4,5)-trisubstituted o-carborane derivatives. Treatment of 1-COOH-2-CH3-o-C2B10H10 with ArCCAr in the presence of a [Cp*RhCl2]2 catalyst and a Cu(OPiv)2 oxidant gave 1,4-[COOC(Ar)C(Ar)]-2-Me-3-OPiv-5-[C(Ar)CH(Ar)-o-C2B10H7 in good to high yields. This protocol represents a new strategy for the catalytic selective polyfunctionalization of carboranes with different substituents.
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Affiliation(s)
- Biao Cheng
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
| | - Yu Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
| | - Peng Zhou
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
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20
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He Y, Börjesson M, Song H, Xue Y, Zeng D, Martin R, Zhu S. Nickel-Catalyzed Ipso/Ortho Difunctionalization of Aryl Bromides with Alkynes and Alkyl Bromides via a Vinyl-to-Aryl 1,4-Hydride Shift. J Am Chem Soc 2021; 143:20064-20070. [PMID: 34793680 DOI: 10.1021/jacs.1c10368] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polysubstituted arenes are ubiquitous structures in a myriad of medicinal agents and complex molecules. Herein, we report a new catalytic blueprint that merges the modularity of nickel catalysis for bond formation with the ability to enable a rather elusive 1,4-hydride shift at arene sp2 C-H sites, thus allowing access to ipso/ortho-difunctionalized arenes from readily available aryl halides under mild conditions and exquisite selectivity profile.
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Affiliation(s)
- Yuli He
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Marino Börjesson
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Huayue Song
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yuhang Xue
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Daning Zeng
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
| | - Shaolin Zhu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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21
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Abstract
Carboranes are a class of polyhedral carbon-boron molecular clusters featuring three-dimensional aromaticity, which are often considered as 3D analogues of benzene. Their unique structural and electronic properties make them invaluable building blocks for applications ranging from functional materials to versatile ligands to pharmaceuticals. Thus, selective functionalization of carboranes has received tremendous research interest. In earlier days, the vast majority of the works in this area were focused on cage carbon functionalization via facile deprotonation of cage CH, followed by reaction with electrophiles. On the contrary, cage B-H activation is very challenging since the 10 B-H bonds on o-carborane are very similar, and how to achieve the desired transformation at specific boron vertex is a long-standing issue.As carbon is considered more electronegative than boron, this property results in different vertex charges on the o-carborane cage, which follow the order B(3,6)-H ≪ B(4,5,7,11)-H < B(8,10)-H < B(9,12)-H. We thought that this difference may trigger the favorite interaction of a proper transition metal complex with a specific B-H bond of carborane, which could be utilized to solve the selectivity issue. Accordingly, our strategy is described as follows: (1) electron-rich transition metal catalysts are good for the activation of the most electron-deficient B(3,6)-H bonds (connected to both cage C-H vertices); (2) electron-deficient transition metal catalysts are good for the activation of the relatively electron-rich B(8,9,10,12)-H bonds (with no bonding to either cage C-H vertices); and (3) directing-group-assisted transition metal catalysis is appropriate for the activation of the B(4,5,7,11)-H bonds (connected to only one cage C-H vertex), whose vertex charges lie in the middle of the range for the 10 B-H bonds. This strategy has been successfully applied by our laboratory and other groups in the development of a series of synthetic routes for catalytic selective activation of B-H bonds of the carborane cage, resulting in the synthesis of a large number of cage-boron-functionalized carborane derivatives in a regioselective and catalytic fashion. Subsequently, significant progress in this emerging area has been made.In 2013 we reported the selective tetrafluorination of o-carboranes at the B(8,9,10,12)-H bonds using an electron-deficient Pd(II) salt, [Pd(MeCN)4][BF4], as the catalyst. In 2014 we disclosed the first example of carboxy-directed alkenylation of o-carboranes at the B(4) vertex promoted by an Ir(III) catalyst. Subsequently, in 2017 we presented an electron-rich Ir(I)-catalyzed diborylation of o-carboranes at the B(3,6)-H bonds. We also uncovered the first example of Pd-catalyzed asymmetric synthesis of chiral-at-cage o-carboranes in 2018. These proof-of-principle studies have greatly stimulated research activities in selective B-H activation of carboranes and boron clusters enabled by transition metal catalysts. We have so far developed a toolbox of synthetic methods for selective catalytic cage B-olefination, -arylation, -alkenylation, -alkynylation, -oxygenation, -sulfenylation, -borylation, -halogenation, and -amination. We have recently expanded our research to base metal catalysis. As the field progresses, we expect that other methods for regioselective cage B-H activation will be invented, and the results detailed in this Account will promote these efforts.
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Affiliation(s)
- Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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22
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Yang L, Jei BB, Scheremetjew A, Yuan B, Stückl AC, Ackermann L. Electrooxidative o-carborane chalcogenations without directing groups: cage activation by copper catalysis at room temperature. Chem Sci 2021; 12:12971-12976. [PMID: 34745527 PMCID: PMC8513870 DOI: 10.1039/d1sc02905c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 08/28/2021] [Indexed: 11/21/2022] Open
Abstract
Copper-catalyzed electrochemical direct chalcogenations of o-carboranes was established at room temperature. Thereby, a series of cage C-sulfenylated and C-selenylated o-carboranes anchored with valuable functional groups was accessed with high levels of position- and chemo-selectivity control. The cupraelectrocatalysis provided efficient means to activate otherwise inert cage C-H bonds for the late-stage diversification of o-carboranes.
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Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany http://www.ackermann.chemie.uni-goettingen.de/
| | - Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany http://www.ackermann.chemie.uni-goettingen.de/
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany http://www.ackermann.chemie.uni-goettingen.de/
| | - Binbin Yuan
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany http://www.ackermann.chemie.uni-goettingen.de/
| | - A Claudia Stückl
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen Tammannstraße 4 37077 Gottingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany http://www.ackermann.chemie.uni-goettingen.de/
- Woehler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany
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23
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Huang R, Zhao W, Xu S, Xu J, Li C, Lu C, Yan H. Photoredox B-H functionalization to selective B-N(sp 3) coupling of nido-carborane with primary and secondary amines. Chem Commun (Camb) 2021; 57:8580-8583. [PMID: 34369517 DOI: 10.1039/d1cc03326c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Access to nido-carborane site-selective B-N(sp3) coupling by photoredox catalysed B-H activation has been achieved for the first time, which leads to the synthesis of a series of nitrogen-containing nido-carboranes with moderate to good yields. This protocol is applicable to primary and secondary amines containing alkyl, or heteroaryl groups as well as sulfonamides. Furthermore, the open to air and metal-free conditions with excellent site-selectivity represent a significant improvement for B-H functionalization of nido-carboranes with organic functionalities.
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Affiliation(s)
- Ronghui Huang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
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24
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Ge Y, Qiu Z, Xie Z. Pd-catalyzed selective tetrafunctionalization of diiodo- o-carboranes. Chem Commun (Camb) 2021; 57:8071-8074. [PMID: 34296721 DOI: 10.1039/d1cc03449a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A palladium-catalyzed highly selective tetrafunctionalization of 3,6-I2-o-carborane and 4,7-I2-o-carborane has been developed, leading to the preparation of 3,6-dialkenyl-4,11-R2-o-carboranes and 4,7-dialkenyl-5,11-R2-o-carboranes (R = alkyl, allyl and aryl) in moderate to excellent yields. This represents a new strategy for selective synthesis of polyfunctionalized o-carborane derivatives via a one-pot process.
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Affiliation(s)
- Yixiu Ge
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai 200032, China.
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai 200032, China. and CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai 200032, China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Rd, Shanghai 200032, China. and Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
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25
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Chen Y, Lyu H, Quan Y, Xie Z. Fe-Catalyzed Intramolecular B-H/C-H Dehydrogenative Coupling: Synthesis of Carborane-Fused Nitrogen Heterocycles. Org Lett 2021; 23:4163-4167. [PMID: 33983035 DOI: 10.1021/acs.orglett.1c01104] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We disclose herein the first example of iron-catalyzed regioselective intramolecular C-H/B-H dehydrogenative coupling, affording unprecedented C,B-substituted carborane-fused phenanthroline derivatives. The 8-aminoquinoline type auxiliaries not only serve as the bidentate directing groups but also ingeniously become the core part of the final products. The mechanistic hypothesis includes B-H activation, directing group rotation promoted by trans effect, C-H activation, and reductive elimination.
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Affiliation(s)
- Yu Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Hairong Lyu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
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26
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Chen M, Zhao D, Xu J, Li C, Lu C, Yan H. Electrooxidative B−H Functionalization of
nido
‐Carboranes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015299] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Meng Chen
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Deshi Zhao
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Jingkai Xu
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Chunxiao Li
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Changsheng Lu
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
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27
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Au YK, Xie Z. Recent Advances in Transition Metal-Catalyzed Selective B-H Functionalization ofo-Carboranes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200366] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, P. R. China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, P. R. China
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28
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Au YK, Zhang J, Quan Y, Xie Z. Ir-Catalyzed Selective B(3)-H Amination of o-Carboranes with NH3. J Am Chem Soc 2021; 143:4148-4153. [DOI: 10.1021/jacs.1c00593] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
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29
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Chen M, Zhao D, Xu J, Li C, Lu C, Yan H. Electrooxidative B-H Functionalization of nido-Carboranes. Angew Chem Int Ed Engl 2021; 60:7838-7844. [PMID: 33372727 DOI: 10.1002/anie.202015299] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Indexed: 11/07/2022]
Abstract
An atom-economical method for the direct B-H functionalization of nido-carboranes (7,8-nido-C2 B9 H12 - ) has been developed under electrochemical reaction conditions. In this reaction system, anodic oxidation serves as a green alternative for traditional chemical oxidants in the oxidation of nido-carboranes. No transition-metal catalyst is required and different heteroatoms bearing a lone pair are reactive in this transformation. Coupling nido-carboranes with thioethers, selenides, tellurides, N-heterocycles, phosphates, phosphines, arsenides and antimonides demonstrates high site-selectivity and efficiency. Importantly, nido-carboranes can be easily incorporated into drug motifs through this reaction protocol.
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Affiliation(s)
- Meng Chen
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Deshi Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jingkai Xu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Chunxiao Li
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Changsheng Lu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
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30
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Guo C, Qiu Z, Xie Z. Catalytic Cage BH Functionalization of Carboranes via “Cage Walking” Strategy. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05639] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chenyang Guo
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, People’s Republic of China
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31
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Stogniy MY, Anufriev SA, Shmal'ko AV, Antropov SM, Anisimov AA, Suponitsky KY, Filippov OA, Sivaev IB. The unexpected reactivity of 9-iodo-nido-carborane: from nucleophilic substitution reactions to the synthesis of tricobalt tris(dicarbollide) Na[4,4',4''-(MeOCH 2CH 2O) 3-3,3',3''-Co 3(μ 3-O)(μ 3-S)(1,2-C 2B 9H 10) 3]. Dalton Trans 2021; 50:2671-2688. [PMID: 33533344 DOI: 10.1039/d0dt03857a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An unusual reactivity of 9-iodo-nido-carborane [9-I-7,8-C2B9H11]- towards nucleophiles under strong basic conditions was revealed. The nucleophilic substitution of iodine with O- and N-nucleophiles results in [9-RO-7,8-C2B9H11]- (R = H, CH2CH2OMe) and [9-L-7,8-C2B9H11] (L = Py, NEt3, Me2NCH2CH2NMe2), respectively. Reaction of [9-I-7,8-C2B9H11]- with CoCl2 in 1,2-dimethoxyethane in the presence of t-BuOK, depending on the order of addition of the reagents, leads either to a diastereomeric mixture of diiodo derivatives cobalt bis(dicarbollide) rac-[4,4'-I2-3,3'-Co(1,2-C2B9H10)2]- and meso-[4,7'-I2-3,3'-Co(1,2-C2B9H10)2]- or to the corresponding mixture of 2-methoxyethoxy derivatives rac-[4,4'-(MeOCH2CH2O)2-3,3'-Co(1,2-C2B9H10)2]- and meso-[4,7'-(MeOCH2CH2O)2-3,3'-Co(1,2-C2B9H10)2]-. In the presence of accidental admixture of sodium thiosulfate, the reactions of 9-iodo-nido-carborane and 9-(2'-methoxyethoxy)-nido-carborane with CoCl2 in 1,2-dimethoxyethane were found to produce additionally unprecedented tricobalt tris(dicarbollide) cluster Na[4,4',4''-(MeOCH2CH2O)3-3,3',3''-Co3(μ3-O)(μ3-S)(1,2-C2B9H10)3], the central fragment of which is a trigonal bipyramid with apical oxygen and sulfur atoms, and the base is formed by the Co3 triangle flanked by three dicarbollide ligands. In addition, the 2-methoxyethoxy substituents of the dicarbollide ligands chelate the sodium cation in such a way that they form a helix whose rotation direction depends on the enantiomer of the parent ligand. Thus, in this case, induction of the helical chirality of the complex occurs due to the point chirality of the initial inorganic ligand. It is worth noting that in the case of symmetrically substituted 2-methoxyethoxy derivative of nido-carborane [10-MeOCH2CH2O-7,8-C2B9H11]- only formation of the corresponding cobalt bis(dicarbollide) complex [8,8'-(MeOCH2CH2O)2-3,3'-Co(1,2-C2B9H10)2]- was observed.
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Affiliation(s)
- Marina Yu Stogniy
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., Moscow, 119991, Russia.
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32
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Xin L, Wan W, Yu Y, Wan Q, Ma L, Huang X. Construction of Protoberberine Alkaloid Core through Palladium Carbene Bridging C–H Bond Functionalization and Pyridine Dearomatization. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05156] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Luoting Xin
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Wan Wan
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yinghua Yu
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Qiuling Wan
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Liyao Ma
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Xueliang Huang
- 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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33
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Yang L, Bongsuiru Jei B, Scheremetjew A, Kuniyil R, Ackermann L. Electrochemical B-H Nitrogenation: Access to Amino Acid and BODIPY-Labeled nido-Carboranes. Angew Chem Int Ed Engl 2021; 60:1482-1487. [PMID: 32991021 PMCID: PMC7839532 DOI: 10.1002/anie.202012105] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Indexed: 12/16/2022]
Abstract
Electrocatalyzed oxidative B-H nitrogenations of nido-carborane (nido-7,8-C2 B9 H12- ) with N-heterocycles have been established, enabling the preparation of various N-substituted nido-carboranes without chemical oxidants or metal catalyst under ambient conditions. The electrolysis manifold occurred with high levels of efficiency as well as chemo- and position- selectivity, employing sustainable electricity as the sole oxidant. The strategy set the stage for a user-friendly access to novel amino acid and fluorogenic boron-dipyrrin (BODIPY)-labeled nido-carborane hybrids.
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Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
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34
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Liu XR, Cui PF, Guo ST, Yuan RZ, Jin GX. Stepwise B–H bond activation of a meta-carborane. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00732g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Stepwise multiple B–H bond activation is a major challenge in synthetic chemistry.
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Affiliation(s)
- Xin-Ran Liu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Peng-Fei Cui
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Shu-Ting Guo
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Run-Ze Yuan
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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35
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Ge Y, Zhang J, Qiu Z, Xie Z. Pd-Catalyzed sequential B(3)–I/B(4)–H bond activation for the synthesis of 3,4-benzo-o-carboranes. Dalton Trans 2021; 50:1766-1773. [DOI: 10.1039/d0dt03740k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd-catalyzed sequential B(3)–I and B(4)–H bond activation was developed for the synthesis of 3,4-benzo-o-carboranes via a formal [2 + 2 + 2] cycloaddition.
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Affiliation(s)
- Yixiu Ge
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 200032
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin, N. T
- China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 200032
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 200032
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36
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Yang L, Bongsuiru Jei B, Scheremetjew A, Kuniyil R, Ackermann L. Elektrochemische B‐H‐Nitrogenierung: Zugang zu Aminosäure‐ und BODIPY‐markierten
nido
‐Carboranen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012105] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
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37
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Cheng R, Qiu Z, Xie Z. Palladium‐Catalyzed
Oxidative Annulation of
1‐Hydroxy‐
o
‐Carborane
with Internal Alkynes: Facile Synthesis of
Carborane‐Fused
Oxaboroles
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000307] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ruofei Cheng
- Shanghai‐Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Rd Shanghai 200032 China
| | - Zaozao Qiu
- Shanghai‐Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Rd Shanghai 200032 China
- CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Rd Shanghai 200032 China
- Fujian Innovation Academy, Chinese Academy of Sciences 155 Yangqiao Rd West Fuzhou Fujian 350002 China
| | - Zuowei Xie
- Shanghai‐Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Rd Shanghai 200032 China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong, China
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38
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Recent Advances in Palladium-Catalyzed Bridging C–H Activation by Using Alkenes, Alkynes or Diazo Compounds as Bridging Reagents. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707268] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AbstractTransition-metal-catalyzed direct inert C–H bond functionalization has attracted much attention over the past decades. However, because of the high strain energy of the suspected palladacycle generated via C–H bond palladation, direct functionalization of a C–H bond less than a three-bond distance from a catalyst center is highly challenging. In this short review, we summarize the advances on palladium-catalyzed bridging C–H activation, in which an inert proximal C–H bond palladation is promoted by the elementary step of migratory insertion of an alkene, an alkyne or a metal carbene intermediate.1 Introduction2 Palladium-Catalyzed Alkene Bridging C–H Activation2.1 Intramolecular Reactions2.2 Intermolecular Reactions3 Palladium-Catalyzed Alkyne Bridging C–H Activation3.1 Intermolecular Reactions3.2 Intramolecular Reactions4 Palladium-Catalyzed Carbene Bridging C–H Activation5 Conclusion and Outlook
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39
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Zhang J, Tang C, Xie Z. Magnesium-mediated sp 3 C-H activation in cascade cyclization of 1-arylethynyl-2-alkyl- o-carboranes: efficient synthesis of carborane-fused cyclopentanes. Chem Sci 2020; 11:9925-9929. [PMID: 34094253 PMCID: PMC8162123 DOI: 10.1039/d0sc04465b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 09/01/2020] [Indexed: 01/03/2023] Open
Abstract
This work reports an unprecedented cascade cyclization of 1-arylethynyl-2-alkyl-o-carboranes promoted by magnesium-mediated sp3 C-H activation. Treatment of 1-arylethynyl-2-alkyl-o-carboranes with MeMgBr gives a series of carborane-fused cyclopentanes in very good yields. Deuterium labelling and control experiments suggest that HMgBr, resulting in situ from the nucleophilic substitution of cage B-H bonds with Grignard reagent, initiates the reaction, in which magnesium-promoted intramolecular sp3 C-H activation serves as a key step. This work not only offers a new route for the synthesis of carborane-fused cyclopentanes, but also sheds some light on Mg-mediated C-H activation and functionalization.
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Affiliation(s)
- Jie Zhang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Cen Tang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Zuowei Xie
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
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40
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Yu Y, Ma L, Xia J, Xin L, Zhu L, Huang X. A Modular Approach to Dibenzo‐fused ϵ‐Lactams: Palladium‐Catalyzed Bridging‐C−H Activation. Angew Chem Int Ed Engl 2020; 59:18261-18266. [DOI: 10.1002/anie.202007799] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Yinghua Yu
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Liyao Ma
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiajin Xia
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Luoting Xin
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lei Zhu
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xueliang Huang
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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41
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Yu Y, Ma L, Xia J, Xin L, Zhu L, Huang X. A Modular Approach to Dibenzo‐fused ϵ‐Lactams: Palladium‐Catalyzed Bridging‐C−H Activation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007799] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yinghua Yu
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Liyao Ma
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiajin Xia
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Luoting Xin
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lei Zhu
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xueliang Huang
- 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 Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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42
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Au YK, Quan Y, Xie Z. Palladium‐Catalyzed Carbonylative Annulation of 1‐Hydroxy‐
o
‐Carborane and Internal Alkynes via Regioselective B‐H Activation. Chem Asian J 2020; 15:2170-2173. [DOI: 10.1002/asia.202000642] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/12/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong Shatin, N.T. Hong Kong China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong Shatin, N.T. Hong Kong China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic ChemistryThe Chinese University of Hong Kong Shatin, N.T. Hong Kong China
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43
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Liang YF, Yang L, Jei BB, Kuniyil R, Ackermann L. Regioselective B(3,4)-H arylation of o-carboranes by weak amide coordination at room temperature. Chem Sci 2020; 11:10764-10769. [PMID: 34094330 PMCID: PMC8162305 DOI: 10.1039/d0sc01515f] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Palladium-catalyzed regioselective di- or mono-arylation of o-carboranes was achieved using weakly coordinating amides at room temperature. Therefore, a series of B(3,4)-diarylated and B(3)-monoarylated o-carboranes anchored with valuable functional groups were accessed for the first time. This strategy provided an efficient approach for the selective activation of B(3,4)–H bonds for regioselective functionalizations of o-carboranes. B–H: site-selective B(3,4)–H arylations were accomplished at room temperature by versatile palladium catalysis enabled by weakly coordinating amides.![]()
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Affiliation(s)
- Yu-Feng Liang
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany
| | - Long Yang
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany
| | - Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Gottingen Germany
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44
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Ren X, Zhu L, Yu Y, Wang ZX, Huang X. Understanding the Chemoselectivity in Palladium-Catalyzed Three-Component Reaction of o-Bromobenzaldehyde, N-Tosylhydrazone, and Methanol. Org Lett 2020; 22:3251-3257. [PMID: 32227902 DOI: 10.1021/acs.orglett.0c01040] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To understand the ligand-controlled palladium-catalyzed coupling of o-bromobenzaldehyde, N-tosylhydrazone, and methanol to give methyl 2-benzylbenzoic ester or methyl ether, we herein investigated the mechanisms which account for how C-C and C-O bonds are formed and why bidentate dppf/dppb ligands afford ester, whereas P(o-tolyl)3 ligand gives ether. The ester chemoselectivity of the bidentate ligands is attributed to the strong electron-donating effect that disfavors the C,Br-reductive elimination of the coupling intermediate of o-bromobenzaldehyde and N-tosylhydrazone.
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Affiliation(s)
- Xiaojian Ren
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Zhu
- 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, Fujian College, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yinghua Yu
- 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, Fujian College, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xueliang Huang
- 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, Fujian College, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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45
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One‐Pot Process to Carborano‐Coumarin
via
Catalytic CascadeDehydrogenative Cross‐Coupling. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900475] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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46
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Au YK, Lyu H, Quan Y, Xie Z. Copper-Catalyzed Electrochemical Selective B–H Oxygenation of o-Carboranes at Room Temperature. J Am Chem Soc 2020; 142:6940-6945. [DOI: 10.1021/jacs.0c02490] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Hairong Lyu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China
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47
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Zhang Z, Zhang X, Yuan J, Yue C, Meng S, Chen J, Yu G, Che C. Transition‐Metal‐Catalyzed Regioselective Functionalization of Monophosphino‐
o‐
Carboranes. Chemistry 2020; 26:5037-5050. [DOI: 10.1002/chem.201905647] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/28/2020] [Indexed: 01/11/2023]
Affiliation(s)
- Zi‐Yang Zhang
- Department Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationChemical Biology CenterCollege of ChemistryCentral China Normal University Wuhan 430079 P. R. China
| | - Xuepeng Zhang
- Laboratory of Computational and Drug DesignSchool of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 P. R. China
- School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| | - Jia Yuan
- Department Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationChemical Biology CenterCollege of ChemistryCentral China Normal University Wuhan 430079 P. R. China
| | - Chang‐Duo Yue
- Department Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationChemical Biology CenterCollege of ChemistryCentral China Normal University Wuhan 430079 P. R. China
| | - Sixuan Meng
- Department Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationChemical Biology CenterCollege of ChemistryCentral China Normal University Wuhan 430079 P. R. China
| | - Jian Chen
- Department Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationChemical Biology CenterCollege of ChemistryCentral China Normal University Wuhan 430079 P. R. China
| | - Guang‐Ao Yu
- Department Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationChemical Biology CenterCollege of ChemistryCentral China Normal University Wuhan 430079 P. R. China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry andDepartment of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong P. R. China
- HKU Shenzhen Institute of Research and Innovation Shenzhen, Guangdong 518057 P. R. China
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48
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Cheng R, Qiu Z, Xie Z. Iridium‐Catalyzed Regioselective B(3)‐Alkenylation/B(3,6)‐Dialkenylation of
o
‐Carboranes by Direct B−H Activation. Chemistry 2020; 26:7212-7218. [DOI: 10.1002/chem.202000549] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/10/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Ruofei Cheng
- Shanghai–Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of, Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Rd Shanghai 200032 P. R. China
| | - Zaozao Qiu
- Shanghai–Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of, Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Rd Shanghai 200032 P. R. China
- CAS Key Laboratory of Energy Regulation MaterialsShanghai Institute of Organic ChemistryChinese Academy of, Sciences 345 Lingling Rd Shanghai 200032 P. R. China
- Fujian Innovation AcademyChinese Academy of Sciences 155 Yangqiao Rd West Fuzhou 350002 P. R. China
| | - Zuowei Xie
- Shanghai–Hong Kong Joint Laboratory in Chemical SynthesisShanghai Institute of Organic ChemistryUniversity of, Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Rd Shanghai 200032 P. R. China
- Department of ChemistryState Key Laboratory of, Synthetic ChemistryThe Chinese University of Hong Kong Shatin, N.T. Hong Kong P. R. China
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49
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Chen Y, Quan Y, Xie Z. 8-Aminoquinoline as a bidentate traceless directing group for Cu-catalyzed selective B(4,5)–H disulfenylation of o-carboranes. Chem Commun (Camb) 2020; 56:12997-13000. [DOI: 10.1039/d0cc05207h] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A traceless bidentate directing group guided copper catalyzed cage B(4,5)–H disulfenylation of o-carboranes has been achieved, where the in situ departure of 8-aminoquinoline circumvents additional process for directing group removal.
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Affiliation(s)
- Yu Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin, N.T
- China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin, N.T
- China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin, N.T
- China
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50
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Chen Y, Quan Y, Xie Z. Ir-catalyzed selective dehydrogenative cross-coupling of aryls with o-carboranes via a mixed directing-group strategy. Chem Commun (Camb) 2020; 56:7001-7004. [DOI: 10.1039/d0cc02531c] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ir-catalyzed highly selective B–H/C–H cross dehydrogenative coupling between o-carboranes and (hetero)aryls has been achieved using a mixed directing-group strategy.
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Affiliation(s)
- Yu Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin
- China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin
- China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry
- The Chinese University of Hong Kong
- Shatin
- China
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