51
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Thapa S, Dhungana RK, Magar RT, Shrestha B, Kc S, Giri R. Ni-catalysed regioselective 1,2-diarylation of unactivated olefins by stabilizing Heck intermediates as pyridylsilyl-coordinated transient metallacycles. Chem Sci 2018; 9:904-909. [PMID: 29629157 PMCID: PMC5872806 DOI: 10.1039/c7sc04351a] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 11/26/2017] [Indexed: 12/19/2022] Open
Abstract
We report a Ni-catalysed diarylation of unactivated olefins in dimethylpyridylvinylsilane by intercepting Heck C(sp3)-NiX intermediates, derived from aryl halides, with arylzinc reagents. This approach utilizes a modifiable pyridylsilyl moiety as a coordinating group that plays a dual role of intercepting oxidative addition species to promote Heck carbometallation, and stabilizing the Heck C(sp3)-NiX intermediates as transient metallacycles to suppress β-hydride elimination, and facilitate transmetalation/reductive elimination. This method affords 1,2-diarylethylsilanes, which can be readily oxidized to 1,2-diarylethanols that occur as structural motifs in 3-aryl-3,4-dihydroisocoumarin and dihydrostilbenoid natural products.
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Affiliation(s)
- Surendra Thapa
- Department of Chemistry & Chemical Biology , The University of New Mexico , Albuquerque , NM 87131 , USA .
| | - Roshan K Dhungana
- Department of Chemistry & Chemical Biology , The University of New Mexico , Albuquerque , NM 87131 , USA .
| | - Rajani Thapa Magar
- Department of Chemistry & Chemical Biology , The University of New Mexico , Albuquerque , NM 87131 , USA .
| | - Bijay Shrestha
- Department of Chemistry & Chemical Biology , The University of New Mexico , Albuquerque , NM 87131 , USA .
| | - Shekhar Kc
- Department of Chemistry & Chemical Biology , The University of New Mexico , Albuquerque , NM 87131 , USA .
| | - Ramesh Giri
- Department of Chemistry & Chemical Biology , The University of New Mexico , Albuquerque , NM 87131 , USA .
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52
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Shaikh TMY, Mulla SAR. Base-Promoted Heterogeneous Reusable Copper Fluorapatite (CuFAP) Catalyzed Facile Synthesis of 1,2-Diarylethanols via C(sp3
)-H Functionalization of Nitrotoluene. ChemistrySelect 2018. [DOI: 10.1002/slct.201702416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Taufeekaslam M. Y. Shaikh
- Department Chemical Engineering and Process Development Division; Institution CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
| | - Shafeek A. R. Mulla
- Department Chemical Engineering and Process Development Division; Institution CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
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53
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Niu B, Jiang B, Yu LZ, Shi M. Base-promoted [3 + 3] cyclization of cyclopropenones and cyclopropenethiones with amides for the synthesis of 6H-1,3-oxazin-6-ones and 6H-1,3-thiazin-6-ones. Org Chem Front 2018. [DOI: 10.1039/c8qo00091c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile synthesis of 6H-1,3-oxazin-6-ones and 6H-1,3-thiazin-6-ones has been achieved in the base-promoted [3 + 3] cyclization of cyclopropenones and cyclopropenethiones with amides.
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Affiliation(s)
- Ben Niu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Bo Jiang
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Liu-Zhu Yu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
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54
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Li RH, Ding ZC, Li CY, Chen JJ, Zhou YB, An XM, Ding YJ, Zhan ZP. Thiophene-Alkyne-Based CMPs as Highly Selective Regulators for Oxidative Heck Reaction. Org Lett 2017; 19:4432-4435. [PMID: 28809502 DOI: 10.1021/acs.orglett.7b01858] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thiophenes containing an adjacent C≡C group as ligands for PdII-promoted organic reactions are reported for the first time. These ligands were utilized as catalytic sites and integrated into the skeleton of conjugated microporous polymers. By employing these CMP materials as selective regulators, oxidative Heck reactions between arylboronic esters and electronically unbiased alkenes provide highly selective linear products.
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Affiliation(s)
- Ren-Hao Li
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
| | - Zong-Cang Ding
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
| | - Cun-Yao Li
- Dalian National Laboratory for Clean Energy, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
| | - Jun-Jia Chen
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
| | - Yun-Bing Zhou
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
| | - Xiao-Ming An
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
| | - Yun-Jie Ding
- Dalian National Laboratory for Clean Energy, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
| | - Zhuang-Ping Zhan
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
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55
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Desnoyer AN, Geng J, Drover MW, Patrick BO, Love JA. Catalytic Functionalization of Styrenyl Epoxides via 2-Nickela(II)oxetanes. Chemistry 2017; 23:11509-11512. [PMID: 28771928 DOI: 10.1002/chem.201702824] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Addison N. Desnoyer
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Jialing Geng
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Marcus W. Drover
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Brian O. Patrick
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Jennifer A. Love
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver BC V6T 1Z1 Canada
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56
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Banerjee A, Yamamoto H. Nickel Catalyzed Regio-, Diastereo-, and Enantioselective Cross-Coupling of 3,4-Epoxyalcohol with Aryl Iodides. Org Lett 2017; 19:4363-4366. [DOI: 10.1021/acs.orglett.7b02076] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amit Banerjee
- Molecular Catalyst Research
Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| | - Hisashi Yamamoto
- Molecular Catalyst Research
Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
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57
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Zhang JJ, Yang JC, Guo LN, Duan XH. Visible-Light-Mediated Dual Decarboxylative Coupling of Redox-Active Esters with α,β-Unsaturated Carboxylic Acids. Chemistry 2017. [PMID: 28631846 DOI: 10.1002/chem.201702200] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient visible-light-induced decarboxylative coupling between α,β-unsaturated carboxylic acids and alkyl N-hydroxyphthalimide esters has been developed. A wide range of redox-active esters derived from aliphatic carboxylic acids (1°, 2° and 3°) proved viable in this dual decarboxylation process, affording a broad scope of substituted alkenes in moderate to excellent yields with good E/Z selectivities. This redox-neutral procedure was highlighted by its mild conditions, operational simplicity, easy accessibility of carboxylic acids, and excellent functional-group tolerance.
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Affiliation(s)
- Jin-Jiang Zhang
- Department of Chemistry, School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, 710049, China
| | - Jun-Cheng Yang
- Department of Chemistry, School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, 710049, China
| | - Li-Na Guo
- Department of Chemistry, School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, 710049, China
| | - Xin-Hua Duan
- Department of Chemistry, School of Science and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, 710049, China
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58
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Zhou YB, Wang YQ, Ning LC, Ding ZC, Wang WL, Ding CK, Li RH, Chen JJ, Lu X, Ding YJ, Zhan ZP. Conjugated Microporous Polymer as Heterogeneous Ligand for Highly Selective Oxidative Heck Reaction. J Am Chem Soc 2017; 139:3966-3969. [DOI: 10.1021/jacs.7b00643] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yun-Bing Zhou
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yu-Qing Wang
- Dalian
National Laboratory for Clean Energy, Collaborative Innovation Center
of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Li-Chao Ning
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zong-Cang Ding
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wen-Long Wang
- Dalian
National Laboratory for Clean Energy, Collaborative Innovation Center
of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Cheng-Ke Ding
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ren-Hao Li
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jun-Jia Chen
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin Lu
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yun-Jie Ding
- Dalian
National Laboratory for Clean Energy, Collaborative Innovation Center
of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhuang-Ping Zhan
- Department
of Chemistry and Key Laboratory for Chemical Biology of Fujian Province,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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59
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Wu K, Doyle AG. Parameterization of phosphine ligands demonstrates enhancement of nickel catalysis via remote steric effects. Nat Chem 2017; 9:779-784. [PMID: 28754948 DOI: 10.1038/nchem.2741] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/23/2017] [Indexed: 12/11/2022]
Abstract
The field of Ni-catalysed cross-coupling has seen rapid recent growth because of the low cost of Ni, its earth abundance, and its ability to promote unique cross-coupling reactions. Whereas advances in the related field of Pd-catalysed cross-coupling have been driven by ligand design, the development of ligands specifically for Ni has received minimal attention. Here, we disclose a class of phosphines that enable the Ni-catalysed Csp3 Suzuki coupling of acetals with boronic acids to generate benzylic ethers, a reaction that failed with known ligands for Ni and designer phosphines for Pd. Using parameters to quantify phosphine steric and electronic properties together with regression statistical analysis, we identify a model for ligand success. The study suggests that effective phosphines feature remote steric hindrance, a concept that could guide future ligand design tailored to Ni. Our analysis also reveals that two classic descriptors for ligand steric environment-cone angle and % buried volume-are not equivalent, despite their treatment in the literature.
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Affiliation(s)
- Kevin Wu
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Abigail G Doyle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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60
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Modi A, Ali W, Patel BK. Organocatalytic Regioselective Concomitant Thiocyanation and Acylation of Oxiranes Using Aroyl Isothiocyanates. Org Lett 2017; 19:432-435. [DOI: 10.1021/acs.orglett.6b03430] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anju Modi
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Wajid Ali
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Bhisma K. Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
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61
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Liu Z, Chen L, Li J, Liu K, Zhao J, Xu M, Feng L, Wan RZ, Li W, Liu L. Oxidative C–H functionalization of N-carbamoyl 1,2-dihydroquinolines. Org Biomol Chem 2017; 15:7600-7606. [DOI: 10.1039/c7ob01793f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A modular and efficient method for the synthesis of α-substituted 1,2-dihydroquinolines through an oxidative C–H functionalization strategy is described.
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Affiliation(s)
- Ziqiang Liu
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- China
- Department of Pharmaceutical Analysis
- School of Pharmacy
| | - Lei Chen
- College of Animal Science and Veterinary Medicine
- Shandong Agricultural University
- Taian 271018
- China
| | - Jing Li
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Ke Liu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Jiaqi Zhao
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Mengmeng Xu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Lei Feng
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Ren-zhong Wan
- College of Animal Science and Veterinary Medicine
- Shandong Agricultural University
- Taian 271018
- China
| | - Wei Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Lei Liu
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- China
- School of Chemistry and Chemical Engineering
- Shandong University
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62
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Bloomfield AJ, Matula AJ, Mercado BQ, Batista VS, Crabtree RH. Organometallic Iridium Complex Containing a Dianionic, Tridentate, Mixed Organic–Inorganic Ligand. Inorg Chem 2016; 55:8121-9. [DOI: 10.1021/acs.inorgchem.6b01218] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aaron J. Bloomfield
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Adam J. Matula
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Brandon Q. Mercado
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Victor S. Batista
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Robert H. Crabtree
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
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63
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Desnoyer AN, Friese FW, Chiu W, Drover MW, Patrick BO, Love JA. Exploring Regioselective Bond Cleavage and Cross-Coupling Reactions using a Low-Valent Nickel Complex. Chemistry 2016; 22:4070-7. [DOI: 10.1002/chem.201504959] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Addison N. Desnoyer
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver V6T 1Z1 Canada
| | - Florian W. Friese
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraβe 40 48149 Münster Germany
| | - Weiling Chiu
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver V6T 1Z1 Canada
| | - Marcus W. Drover
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver V6T 1Z1 Canada
| | - Brian O. Patrick
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver V6T 1Z1 Canada
| | - Jennifer A. Love
- Department of Chemistry; The University of British Columbia; 2036 Main Mall Vancouver V6T 1Z1 Canada
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64
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Xie Z, Jia J, Liu X, Liu L. Copper(II) Triflate-Catalyzed Aerobic Oxidative CH Functionalization of Glycine Derivatives with Olefins and Organoboranes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501015] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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65
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Ebrahim-Alkhalil A, Zhang ZQ, Gong TJ, Su W, Lu XY, Xiao B, Fu Y. Copper-catalyzed cross-coupling reactions of epoxides with gem-diborylmethane: access to γ-hydroxyl boronic esters. Chem Commun (Camb) 2016; 52:4891-3. [DOI: 10.1039/c5cc09817c] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we describe a novel copper-catalyzed epoxide opening reaction with gem-diborylmethane.
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Affiliation(s)
- Ahmed Ebrahim-Alkhalil
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
| | - Zhen-Qi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
| | - Tian-Jun Gong
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
| | - Wei Su
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
| | - Xiao-Yu Lu
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- University of Science and Technology of China
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66
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Sun Y, Wang G, Chen J, Liu C, Cai M, Zhu R, Huang H, Li W, Liu L. A practical oxidative C–H functionalization of N-carbamoyl tetrahydro-β-carbolines with diverse potassium trifluoroborates. Org Biomol Chem 2016; 14:9431-9438. [DOI: 10.1039/c6ob01171c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical and mild metal-free oxidative C–H functionalization ofN-carbamoyl tetrahydro-β-carbolines with diverse potassium trifluoroborates has been reported.
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Affiliation(s)
- Yi Sun
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
- Department of Pharmaceutical Analysis
| | - Gang Wang
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
| | - Jiayu Chen
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Chang Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
| | - Manqi Cai
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Haofei Huang
- College of Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- China
| | - Wei Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Shandong 250355
- China
| | - Lei Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- China
- School of Chemistry and Chemical Engineering
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67
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Prina Cerai G, Morandi B. Atom-economical cobalt-catalysed regioselective coupling of epoxides and aziridines with alkenes. Chem Commun (Camb) 2016; 52:9769-72. [DOI: 10.1039/c6cc04410g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An atom-economical cobalt-catalysed regioselective coupling of epoxides and aziridines with alkenes is reported.
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Affiliation(s)
| | - Bill Morandi
- Max-Planck-Institut für Kohlenforschung
- Mülheim an der Ruhr
- Germany
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68
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Desnoyer AN, Bowes EG, Patrick BO, Love JA. Synthesis of 2-Nickela(II)oxetanes from Nickel(0) and Epoxides: Structure, Reactivity, and a New Mechanism of Formation. J Am Chem Soc 2015; 137:12748-51. [PMID: 26423214 DOI: 10.1021/jacs.5b06735] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2-Nickelaoxetanes have been frequently invoked as reactive intermediates in catalytic reactions of epoxides using nickel, but have never been isolated or experimentally observed in these transformations. Herein, we report the preparation of a series of well-defined nickelaoxetanes formed via the oxidative addition of nickel(0) with epoxides featuring ketones. The stereochemistry of the products is retained, which has not yet been reported for nickelaoxetanes. Theoretical calculations support a bimetallic ring-opening/closing pathway over a concerted oxidative addition. Initial reactivity studies of a nickelaoxetane demonstrated protonolysis, oxidatively induced reductive elimination, deoxygenation, and elimination reactions when treated with the appropriate reagents.
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Affiliation(s)
- Addison N Desnoyer
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Eric G Bowes
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Brian O Patrick
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Jennifer A Love
- Department of Chemistry, The University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
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69
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Lu XY, Yang CT, Liu JH, Zhang ZQ, Lu X, Lou X, Xiao B, Fu Y. Cu-catalyzed cross-coupling reactions of epoxides with organoboron compounds. Chem Commun (Camb) 2015; 51:2388-91. [PMID: 25564373 DOI: 10.1039/c4cc09321f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-catalyzed cross-coupling reaction of epoxides with arylboronates is described. This reaction is not limited to aromatic epoxides, because aliphatic epoxides are also suitable substrates. In addition, N-sulfonyl aziridines can be successfully converted into the products. This reaction provides convenient access to β-phenethyl alcohols, which are valuable synthetic intermediates.
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Affiliation(s)
- Xiao-Yu Lu
- Collaborative Innovation Center of Chemistry for Energy Materials, Anhui Province Key Laboratory for Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China.
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70
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Kampmann SS, Skelton BW, Wild DA, Koutsantonis GA, Stewart SG. An Air-Stable Nickel(0) Phosphite Precatalyst for Primary Alkylamine C-N Cross-Coupling Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500734] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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71
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Abstract
The first enantioselective cross-electrophile coupling of aryl bromides with meso-epoxides to form trans-β-arylcycloalkanols is presented. The reaction is catalyzed by a combination of (bpy)NiCl2 and a chiral titanocene under reducing conditions. Yields range from 57 to 99% with 78-95% enantiomeric excess. The 30 examples include a variety of functional groups (ether, ester, ketone, nitrile, ketal, trifluoromethyl, sulfonamide, sulfonate ester), both aryl and vinyl halides, and five- to seven-membered rings. The intermediacy of a carbon radical is strongly suggested by the conversion of cyclooctene monoxide to an aryl [3.3.0]bicyclooctanol.
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Affiliation(s)
- Yang Zhao
- Department of Chemistry, University of Rochester , Rochester, New York 14627-0216, United States
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72
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Li Z, Liu L. Recent advances in mechanistic studies on Ni catalyzed cross-coupling reactions. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60217-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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73
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Chen W, Xie Z, Zheng H, Lou H, Liu L. Structurally diverse α-substituted benzopyran synthesis through a practical metal-free C(sp3)-H functionalization. Org Lett 2014; 16:5988-91. [PMID: 25386987 DOI: 10.1021/ol503004a] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A trityl ion-mediated practical C-H functionalization of a variety of benzopyrans with a wide range of nucleophiles (organoboranes and C-H molecules) at ambient temperature has been disclosed. The metal-free reaction has an excellent functional group tolerance and high chemoselectivity and displays a broad scope with respect to both benzopyran and nucleophile partners, efficiently affording a collection of benzopyrans bearing diverse skeletons and α-functionalities in one step.
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Affiliation(s)
- Wenfang Chen
- Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University , Jinan 250012, PR China
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74
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Wan M, Meng Z, Lou H, Liu L. Practical and highly selective C-H functionalization of structurally diverse ethers. Angew Chem Int Ed Engl 2014; 53:13845-9. [PMID: 25346297 DOI: 10.1002/anie.201407083] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/31/2014] [Indexed: 11/10/2022]
Abstract
A trityl ion mediated C-H functionalization of ethers with a wide range of nucleophiles at ambient temperature has been developed. The reaction displays high chemoselectivity and good functional group tolerance. The protocol also exhibits excellent regio- and diastereoselectivities for the unsymmetric ethers, thus stereoselectively generating highly functionalized disubstituted 2,5-trans tetrahydrofurans (THF), 2,6-trans tetrahydropyrans (THP), 2,6-trans dihydropyrans (DHP), and 1,3-trans isochromans, and highlighting the capacity of the protocol in complex molecule synthesis.
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Affiliation(s)
- Miao Wan
- Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012 (China)
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75
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Wan M, Meng Z, Lou H, Liu L. Practical and Highly Selective CH Functionalization of Structurally Diverse Ethers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407083] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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76
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Tollefson EJ, Dawson DD, Osborne CA, Jarvo ER. Stereospecific cross-coupling reactions of aryl-substituted tetrahydrofurans, tetrahydropyrans, and lactones. J Am Chem Soc 2014; 136:14951-8. [PMID: 25308512 PMCID: PMC4210078 DOI: 10.1021/ja5076426] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The stereospecific ring-opening of O-heterocycles to provide acyclic alcohols and carboxylic acids with controlled formation of a new C-C bond is reported. These reactions provide new methods for synthesis of acyclic polyketide analogs with complex stereochemical arrays. Stereoselective synthesis of the cyclic template is utilized to control relative configuration; subsequent stereospecific nickel-catalyzed ring-opening affords the acyclic product. Aryl-substituted tetrahydrofurans and tetrahydropyrans undergo nickel-catalyzed Kumada-type coupling with a range of Grignard reagents to furnish acyclic alcohols with high diastereoselectivity. Enantioenriched lactones undergo Negishi-type cross-coupling with dimethylzinc to afford enantioenriched carboxylic acids. Application in a two-step enantioselective synthesis of an anti-dyslipidemia agent is demonstrated.
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Affiliation(s)
- Emily J Tollefson
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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77
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Deng Q, Shen R, Ding R, Zhang L. Generation of Ethynyl-Grignard Reagent in a Falling Film Microreactor: An Expeditious Flow Synthesis of Propargylic Alcohols and Analogues. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400560] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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78
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Huang CYD, Doyle AG. The chemistry of transition metals with three-membered ring heterocycles. Chem Rev 2014; 114:8153-98. [PMID: 24869559 DOI: 10.1021/cr500036t] [Citation(s) in RCA: 383] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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79
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Kampmann SS, Sobolev AN, Koutsantonis GA, Stewart SG. Stable Nickel(0) Phosphites as Catalysts for CN Cross-Coupling Reactions. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400201] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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80
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Xie Z, Liu L, Chen W, Zheng H, Xu Q, Yuan H, Lou H. Practical Metal-Free C(sp3)H Functionalization: Construction of Structurally Diverse α-SubstitutedN-Benzyl andN-Allyl Carbamates. Angew Chem Int Ed Engl 2014; 53:3904-8. [DOI: 10.1002/anie.201310193] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Indexed: 11/06/2022]
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81
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Xie Z, Liu L, Chen W, Zheng H, Xu Q, Yuan H, Lou H. Practical Metal-Free C(sp3)H Functionalization: Construction of Structurally Diverse α-SubstitutedN-Benzyl andN-Allyl Carbamates. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310193] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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82
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Roscales S, Csákÿ AG. Metal-free ring-opening of epoxides with potassium trifluoroborates. Chem Commun (Camb) 2014; 50:454-6. [DOI: 10.1039/c3cc47360k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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83
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Zhao Y, Weix DJ. Nickel-catalyzed regiodivergent opening of epoxides with aryl halides: co-catalysis controls regioselectivity. J Am Chem Soc 2013; 136:48-51. [PMID: 24341892 DOI: 10.1021/ja410704d] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Epoxides are versatile intermediates in organic synthesis, but have rarely been employed in cross-coupling reactions. We report that bipyridine-ligated nickel can mediate the addition of functionalized aryl halides, a vinyl halide, and a vinyl triflate to epoxides under reducing conditions. For terminal epoxides, the regioselectivity of the reaction depends upon the cocatalyst employed. Iodide cocatalysis results in opening at the less hindered position via an iodohydrin intermediate. Titanocene cocatalysis results in opening at the more hindered position, presumably via Ti(III)-mediated radical generation. 1,2-Disubstituted epoxides are opened under both conditions to form predominantly the trans product.
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Affiliation(s)
- Yang Zhao
- Department of Chemistry, University of Rochester , Rochester, New York, United States 14627-0216
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84
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Nielsen DK, Huang CYD, Doyle AG. Directed nickel-catalyzed negishi cross coupling of alkyl aziridines. J Am Chem Soc 2013; 135:13605-9. [PMID: 23961769 DOI: 10.1021/ja4076716] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein we report a nickel-catalyzed C-C bond-forming reaction between simple alkyl aziridines and organozinc reagents. This method represents the first catalytic cross-coupling reaction employing a nonallylic and nonbenzylic Csp(3)-N bond as an electrophile. Key to its success is the use of a new N-protecting group (cinsyl or Cn) bearing an electron-deficient olefin that directs oxidative addition and facilitates reductive elimination. Studies pertinent to elucidation of the mechanism of cross coupling are also presented.
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Affiliation(s)
- Daniel K Nielsen
- Department of Chemistry, Princeton University , Princeton, New Jersey 08544, United States
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85
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Suseno S, Agapie T. Intramolecular Arene C-H to C-P Functionalization Mediated by Ni(II) and Pd(II). Organometallics 2013; 32:10.1021/om400424a. [PMID: 24187424 PMCID: PMC3811949 DOI: 10.1021/om400424a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A trisphosphine ligand with a triarylbenzene backbone was employed to support mono-nickel(II) and palladium(II) complexes. Two phosphine arms coordinated to the metal center, while the third phosphine was found to form a C-P bond with dearomatization of the central arene. Deprotonation effected the rearomatization of the central ring and metal reduction from M(II) to M(0). The overall conversion corresponds to a functionalization of an unactivated arene C-H bond to a C-P bond. This transformation represents a rare type of mechanism of C-H functionalization, facilitated by the interactions of the group 10 metal with the arene π-system. This conversion is reminiscent of and expands the scope of recently reported intramolecular rearrangements of biaryl phosphine ligands common in group 10 catalysis.
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Affiliation(s)
- Sandy Suseno
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
| | - Theodor Agapie
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 127-72, Pasadena, California 91125, United States
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86
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Vyas DJ, Larionov E, Besnard C, Guénée L, Mazet C. Isomerization of Terminal Epoxides by a [Pd–H] Catalyst: A Combined Experimental and Theoretical Mechanistic Study. J Am Chem Soc 2013; 135:6177-83. [DOI: 10.1021/ja400325w] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Devendra J. Vyas
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211
Geneva 4, Switzerland
| | - Evgeny Larionov
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211
Geneva 4, Switzerland
| | - Céline Besnard
- Laboratoire
de Crystallographie, University of Geneva, Quai Ernest Ansermet 24, 1211
Geneva 4, Switzerland
| | - Laure Guénée
- Laboratoire
de Crystallographie, University of Geneva, Quai Ernest Ansermet 24, 1211
Geneva 4, Switzerland
| | - Clément Mazet
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211
Geneva 4, Switzerland
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87
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Besandre R, Jaimes M, May JA. Indoles Synthesized from Amines via Copper Catalysis. Org Lett 2013; 15:1666-9. [DOI: 10.1021/ol400444g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ronald Besandre
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, United States
| | - Miguel Jaimes
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, United States
| | - Jeremy A. May
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, United States
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88
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Alvarez MA, Alvarez B, García ME, García-Vivó D, Ruiz MA. Stepwise hydrogenation of an arylthiophosphinidene isocyanide complex to give tethered aldimine and aminocarbene functions. Dalton Trans 2013; 42:11039-42. [DOI: 10.1039/c3dt51562a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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89
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Milner PJ, Maimone TJ, Su M, Chen J, Müller P, Buchwald SL. Investigating the dearomative rearrangement of biaryl phosphine-ligated Pd(II) complexes. J Am Chem Soc 2012; 134:19922-34. [PMID: 23153301 PMCID: PMC3530617 DOI: 10.1021/ja310351e] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A series of monoligated L·Pd(II)(Ar)X complexes (L = dialkyl biaryl phosphine) have been prepared and studied in an effort to better understand an unusual dearomative rearrangement previously documented in these systems. Experimental and theoretical evidence suggest a concerted process involving the unprecedented Pd(II)-mediated insertion of an aryl group into an unactivated arene.
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Affiliation(s)
- Phillip J. Milner
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | | | - Mingjuan Su
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jiahao Chen
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Peter Müller
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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90
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Zhang N, Hoffman DJ, Gutsche N, Gupta J, Percec V. Comparison of Arylboron-Based Nucleophiles in Ni-Catalyzed Suzuki–Miyaura Cross-Coupling with Aryl Mesylates and Sulfamates. J Org Chem 2012; 77:5956-64. [DOI: 10.1021/jo300547v] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Na Zhang
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - David J. Hoffman
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Nicholas Gutsche
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Jayesh Gupta
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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91
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Abstract
A modular and highly efficient protocol for the synthesis of 2-aryl- and heteroaryl-2H-chromenes is described. Under base-free conditions, readily accessible 2-ethoxy-2H-chromenes undergo C(sp(3))-O activation and C(sp(3))-C bond formation in the presence of an inexpensive nickel catalyst and boronic acids. This new strategy enables broad access to 2-substituted-2H-chromenes and has been applied to the late-stage incorporation of complex molecules, including the pharmaceuticals loratidine and indomethacin methyl ester.
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Affiliation(s)
- Thomas J. A. Graham
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Abigail G. Doyle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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92
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Huang CY(D, Doyle AG. Nickel-Catalyzed Negishi Alkylations of Styrenyl Aziridines. J Am Chem Soc 2012; 134:9541-4. [DOI: 10.1021/ja3013825] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Abigail G. Doyle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544,
United States
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93
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Boehringer Ingelheim New Investigator Award in organischer Chemie: A. G. Doyle / Boehringer Ingelheim New Faculty Grant: S. E. Reisman / GDCh-Preis für Schriftsteller und Journalisten: V. Köster. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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94
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Boehringer Ingelheim New Investigator Award in Organic Chemistry: A. G. Doyle / Boehringer Ingelheim New Faculty Grant: S. E. Reisman / GDCh Prize for Authors and Journalists: V. Köster. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201201128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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95
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Li Z, Jiang YY, Fu Y. Theoretical study on the mechanism of Ni-catalyzed alkyl-alkyl Suzuki cross-coupling. Chemistry 2012; 18:4345-57. [PMID: 22374716 DOI: 10.1002/chem.201103882] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Indexed: 11/11/2022]
Abstract
Ni-catalyzed cross-coupling of unactivated secondary alkyl halides with alkylboranes provides an efficient way to construct alkyl-alkyl bonds. The mechanism of this reaction with the Ni/L1 (L1=trans-N,N'-dimethyl-1,2-cyclohexanediamine) system was examined for the first time by using theoretical calculations. The feasible mechanism was found to involve a Ni(I)-Ni(III) catalytic cycle with three main steps: transmetalation of [Ni(I)(L1)X] (X=Cl, Br) with 9-borabicyclo[3.3.1]nonane (9-BBN)R(1) to produce [Ni(I)(L1)(R(1))], oxidative addition of R(2) X with [Ni(I)(L1)(R(1))] to produce [Ni(III)(L1)(R(1))(R(2))X] through a radical pathway, and C-C reductive elimination to generate the product and [Ni(I)(L1)X]. The transmetalation step is rate-determining for both primary and secondary alkyl bromides. KOiBu decreases the activation barrier of the transmetalation step by forming a potassium alkyl boronate salt with alkyl borane. Tertiary alkyl halides are not reactive because the activation barrier of reductive elimination is too high (+34.7 kcal mol(-1)). On the other hand, the cross-coupling of alkyl chlorides can be catalyzed by Ni/L2 (L2=trans-N,N'-dimethyl-1,2-diphenylethane-1,2-diamine) because the activation barrier of transmetalation with L2 is lower than that with L1. Importantly, the Ni(0)-Ni(II) catalytic cycle is not favored in the present systems because reductive elimination from both singlet and triplet [Ni(II)(L1)(R(1))(R(2))] is very difficult.
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Affiliation(s)
- Zhe Li
- Department of Chemistry, University of Science and Technology of China, 230026 Hefei, China
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96
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Maimone TJ, Milner PJ, Kinzel T, Zhang Y, Takase MK, Buchwald SL. Evidence for in situ catalyst modification during the Pd-catalyzed conversion of aryl triflates to aryl fluorides. J Am Chem Soc 2011; 133:18106-9. [PMID: 21999801 DOI: 10.1021/ja208461k] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A mechanistic investigation of the Pd-catalyzed conversion of aryl triflates to fluorides is presented. Studies reveal that C-F reductive elimination from a LPd(II)(aryl)F complex (L = t-BuBrettPhos or RockPhos) does not occur when the aryl group is electron rich. Evidence is presented that a modified phosphine, generated in situ, serves as the actual supporting ligand during catalysis with such substrates. A preliminary study of the reactivity of a LPd(II)(aryl)F complex based on this modified ligand is reported.
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Affiliation(s)
- Thomas J Maimone
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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97
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Vo CVT, Mitchell TA, Bode JW. Expanded Substrate Scope and Improved Reactivity of Ether-Forming Cross-Coupling Reactions of Organotrifluoroborates and Acetals. J Am Chem Soc 2011; 133:14082-9. [DOI: 10.1021/ja205174c] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cam-Van T. Vo
- Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH-Zürich, Wolfgang Pauli Strasse 10, 8093 Zürich, Switzerland
| | - T. Andrew Mitchell
- Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH-Zürich, Wolfgang Pauli Strasse 10, 8093 Zürich, Switzerland
| | - Jeffrey W. Bode
- Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH-Zürich, Wolfgang Pauli Strasse 10, 8093 Zürich, Switzerland
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