1
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Ževart T, Pinter B, Lozinšek M, Urankar D, Jansen-van Vuuren RD, Košmrlj J. Towards structurally versatile mesoionic N-heterocyclic olefin ligands and their coordination to palladium, gold, and boron hydride. Dalton Trans 2024; 53:8915-8925. [PMID: 38590282 DOI: 10.1039/d4dt00195h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
We have developed an efficient and versatile approach for the synthesis of a family of 1,2,3-triazole-based mesoionic N-heterocyclic olefin (mNHO) ligands and investigated their coordination to palladium, gold, and boron hydride experimentally and computationally. We reacted mNHOs obtained through deprotonation of the corresponding methylated and ethylated 1,3,4-triaryl-1,2,3-triazolium salts with [Pd(allyl)Cl]2 to give the corresponding [Pd(η3-allyl)Cl(mNHO)] coordination complexes. 13C NMR data revealed the strong σ-donor character of the mNHO ligands, consistent with the calculated bond orders and atom-condensed charges. Furthermore, we also synthesized [AuCl(mNHO)] and a BH3-mNHO adduct by reacting the triazolium salts with AuCl(SMe2) and BH3·THF, respectively. The BH3-mNHO adduct was tested in the reduction of select aldehydes and ketones to alcohols.
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Affiliation(s)
- Tisa Ževart
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI 1000 Ljubljana, Slovenia.
| | - Balazs Pinter
- The University of Texas at El Paso, 500 West University Avenue, El Paso, TX 79968, USA
| | - Matic Lozinšek
- Jožef Stefan Institute, Jamova cesta 39, SI 1000 Ljubljana, Slovenia
| | - Damijana Urankar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI 1000 Ljubljana, Slovenia.
| | - Ross D Jansen-van Vuuren
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI 1000 Ljubljana, Slovenia.
| | - Janez Košmrlj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI 1000 Ljubljana, Slovenia.
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2
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Samudrala K, Akram MO, Dutton JL, Martin CD, Conley MP. Formation of Strong Boron Lewis Acid Sites on Silica. Inorg Chem 2024; 63:4939-4946. [PMID: 38451151 PMCID: PMC10951953 DOI: 10.1021/acs.inorgchem.3c04121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/08/2024]
Abstract
Bis(1-methyl-ortho-carboranyl)borane (HBMeoCb2) is a very strong Lewis acid that reacts with the isolated silanols present on silica partially dehydroxylated at 700 °C (SiO2-700) to form the well-defined Lewis site MeoCb2B(OSi≡) (1) and H2. 11B{1H} magic-angle spinning (MAS) nuclear magnetic resonance (NMR) data of 1 are consistent with that of a three-coordinate boron site. Contacting 1 with O═PEt3 (triethylphosphine oxide TEPO) and measuring 31P{1H} MAS NMR spectra show that 1 preserves the strong Lewis acidity of HBMeoCb2. Hydride ion affinity and fluoride ion affinity calculations using small molecules analogs of 1 also support the strong Lewis acidity of the boron sites in this material. Reactions of 1 with Cp2Hf(13CH3)2 show that the Lewis sites are capable of abstracting methide groups from Hf to form [Cp2Hf-13CH3][H313C-B(MeoCb2)OSi≡], but with a low overall efficiency.
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Affiliation(s)
| | - Manjur O. Akram
- Department
of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798, United States
| | - Jason L. Dutton
- Department
of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Caleb D. Martin
- Department
of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798, United States
| | - Matthew P. Conley
- Department
of Chemistry, University of California, Riverside, California 92521, United States
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3
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Chen D, Xu L, Yu Y, Mo Q, Qi X, Liu C. Triflylpyridinium Enables Rapid and Scalable Controlled Reduction of Carboxylic Acids to Aldehydes using Pinacolborane. Angew Chem Int Ed Engl 2023; 62:e202215168. [PMID: 36378536 DOI: 10.1002/anie.202215168] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Indexed: 11/16/2022]
Abstract
Building up new and efficient methods for the controlled conversion of carboxylic acids to aldehydes is important. Herein, we report a rapid, modular and scalable method for the conversion of carboxylic acids to aldehydes using pinacolborane at ambient temperature, in which a triflylpyridinium reagent is used. The conversion of carboxylic acid to intermediate acylpyridinium by triflylpyridinium is new. A binary pyridine-coordinated boronium complex is generated after reduction. The unprecedented reduction of the acylpyridinium by HBpin opens up a practically direct synthesis of aldehydes from carboxylic acids. Theoretical studies indicate that the reduction of acylpyridinium requires a lower activation free energy than that of the product aldehyde. The synthetic advantage of this protocol is further highlighted by the scalable synthesis of aldehyde via continuous flow process. Configuration retention for chiral acids are presented in those syntheses.
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Affiliation(s)
- Du Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liangxuan Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yi Yu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Qinliang Mo
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Xiaotian Qi
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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4
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Haque MZU, Hashmi IA, Qureshi MT, Bari A, Musharraf SG, Ali FI. Mild and Efficient Reductive
N,N‐
Dimethylation of Amines by Using 1,3‐Dimethylimidazole‐2‐ylidene Borane (diMe‐Imd‐BH
3
). ChemistrySelect 2022. [DOI: 10.1002/slct.202203404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
| | - Imran Ali Hashmi
- Department of Chemistry University of Karachi Main University Road Karachi 75270 Sindh Pakistan
| | - Muhammad Taha Qureshi
- Department of Chemistry University of Karachi Main University Road Karachi 75270 Sindh Pakistan
| | - Ahmad Bari
- Department of Pharmaceutical Chemistry College of Pharmacy King Saud University P.O. Box 2457 Riyadh 11451 Saudi Arabia
| | - Syed Ghulam Musharraf
- HEJ Research Institute of Chemistry University of Karachi Main University Road Karachi 75270 Sindh Pakistan
| | - Firdous Imran Ali
- Department of Chemistry University of Karachi Main University Road Karachi 75270 Sindh Pakistan
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5
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Tang Y, Yu B. A Mild Heteroatom (O-, N-, and S-) Methylation Protocol Using Trimethyl Phosphate (TMP)–Ca(OH)2Combination. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1731-3852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractA mild heteroatom methylation protocol using trimethyl phosphate (TMP)–Ca(OH)2 combination has been developed, which proceeds in DMF, or water, or under neat conditions, at 80 °C or at room temperature. A series of O-, N-, and S-nucleophiles, including phenols, sulfonamides, N-heterocycles, such as 9H-carbazole, indole derivatives, and 1,8-naphthalimide, and aryl/alkyl thiols, are suitable substrates for this protocol. The high efficiency, operational simplicity, scalability, cost-efficiency, and environmentally friendly nature of this protocol make it an attractive alternative to the conventional base-promoted heteroatom methylation procedures.
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6
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Deis T, Medici F, Poussard-Schulz A, Lemière G, Fensterbank L. Synthesis and reactivity of an anionic NHC-borane featuring a weakly coordinating silicate anion. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Kamal MM, Liu Z, Zhai S, Vidović D. Imine Reduction with Me 2S-BH 3. Molecules 2021; 26:5443. [PMID: 34576911 PMCID: PMC8467297 DOI: 10.3390/molecules26185443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/30/2021] [Accepted: 09/02/2021] [Indexed: 11/25/2022] Open
Abstract
Although there exists a variety of different catalysts for hydroboration of organic substrates such as aldehydes, ketones, imines, nitriles etc., recent evidence suggests that tetra-coordinate borohydride species, formed by activation, redistribution, or decomposition of boron reagents, are the true hydride donors. We then proposed that Me2S-BH3 could also act as a hydride donor for the reduction of various imines, as similar compounds have been observed to reduce carbonyl substrates. This boron reagent was shown to be an effective and chemoselective hydroboration reagent for a wide variety of imines.
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Affiliation(s)
- Mohammad M. Kamal
- School of Chemistry, Faculty of Sciences, Monash University, Clayton 3800, Australia; (M.M.K.); (Z.L.); (S.Z.)
| | - Zhizhou Liu
- School of Chemistry, Faculty of Sciences, Monash University, Clayton 3800, Australia; (M.M.K.); (Z.L.); (S.Z.)
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Siyuan Zhai
- School of Chemistry, Faculty of Sciences, Monash University, Clayton 3800, Australia; (M.M.K.); (Z.L.); (S.Z.)
| | - Dragoslav Vidović
- School of Chemistry, Faculty of Sciences, Monash University, Clayton 3800, Australia; (M.M.K.); (Z.L.); (S.Z.)
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8
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Mono‐ and Di‐Mesoionic Carbene‐Boranes: Synthesis, Structures and Utility as Reducing Agents. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Zhang FL, Wang YF, Zhuang BY, Jin JK. Radical-Hydroboration-Involved One-Pot Synthesis of Boron-Handled Glycol Derivatives. Synlett 2021. [DOI: 10.1055/s-0040-1707142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A one-pot two-step protocol for the direct synthesis of boron-handled glycol derivatives is reported. The procedure starts by an NHC–boryl-radical-promoted regioselective hydroboration of glycol-protected cinnamaldehydes. After that, the reaction mixture is treated with pinacol in the presence of HCl, leading to the direct formation of pinacol boronate handled glycol monoalkyl ethers. In this acid-triggered conversion, a reductive ring-opening of glycol-derived acetal moiety takes place, during which an NHC–borane unit serves as the hydride source.
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10
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Zeng L, Chen R, Zhang C, Xie H, Cui S. Iridium(i)-catalyzed hydration/esterification of 2-alkynylphenols and carboxylic acids. Chem Commun (Camb) 2020; 56:3093-3096. [DOI: 10.1039/c9cc09984k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A mild and efficient iridium(i)-catalyzed hydration/esterification of 2-alkynylphenols and carboxylic acids has been successfully developed.
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Affiliation(s)
- Linwei Zeng
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Renjie Chen
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Chen Zhang
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Hujun Xie
- Department of Applied Chemistry
- Zhejiang Gongshang University
- Hangzhou 310018
- China
| | - Sunliang Cui
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
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11
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Shesterkina AA, Kustov LM, Strekalova AA, Kazansky VB. Heterogeneous iron-containing nanocatalysts – promising systems for selective hydrogenation and hydrogenolysis. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00086h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Bimetallic catalytic systems Fe–Me (Pt, Pd, Cu) demonstrate synergy in the activity/selectivity pattern in reactions involving hydrogen: selective hydrogenation of CC bonds, NO2 and carbonyl groups and hydrogenolysis of C–O bonds.
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Affiliation(s)
- Anastasiya A. Shesterkina
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow 119991
- Russia
- National University of Science and Technology MISiS
| | - Leonid M. Kustov
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow 119991
- Russia
- National University of Science and Technology MISiS
| | - Anna A. Strekalova
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow 119991
- Russia
- National University of Science and Technology MISiS
| | - Vladimir B. Kazansky
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow 119991
- Russia
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12
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Aupic C, Abdou Mohamed A, Figliola C, Nava P, Tuccio B, Chouraqui G, Parrain JL, Chuzel O. Highly diastereoselective preparation of chiral NHC-boranes stereogenic at the boron atom. Chem Sci 2019; 10:6524-6530. [PMID: 31341605 PMCID: PMC6611065 DOI: 10.1039/c9sc01454c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 05/23/2019] [Indexed: 11/21/2022] Open
Abstract
Stereogenic main group elements are clearly generating interest in the enantioselective catalysis field. Surprisingly, while chiral organoboron reagents are very useful in stereoselective transformations, few scaffolds stereogenic at boron and configurationally stable have been reported to date. Herein, we describe an original library of chiral NHC-boranes, stereogenic at the boron atom, that has been prepared in only a few steps and in good yields (up to 93%). Key steps involve a chlorination/arylation sequence in the presence of simple Grignard reagents from bicyclic NHC-boranes. The high and unprecedented diastereoselectivity observed during the second step (up to 99 : 1 dr) has been rationalized through a plausible SRN1 mechanism thanks to EPR observations and DFT calculations.
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Affiliation(s)
- Clara Aupic
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
| | - Amel Abdou Mohamed
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
| | - Carlotta Figliola
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
| | - Paola Nava
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
| | | | - Gaëlle Chouraqui
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
| | - Jean-Luc Parrain
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
| | - Olivier Chuzel
- Aix Marseille Univ , CNRS , Centrale Marseille, iSm2 , Marseille , France .
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13
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Redina EA, Vikanova KV, Kapustin GI, Mishin IV, Tkachenko OP, Kustov LM. Selective Room-Temperature Hydrogenation of Carbonyl Compounds under Atmospheric Pressure over Platinum Nanoparticles Supported on Ceria-Zirconia Mixed Oxide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900215] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Elena A. Redina
- Laboratory of Development and Study of Polyfunctional Catalysts; Zelinsky Institute of Organic Chemistry RAS; 119991, Leninsky pr. 47 Moscow Russian Federation
| | - Kseniia V. Vikanova
- Laboratory of Development and Study of Polyfunctional Catalysts; Zelinsky Institute of Organic Chemistry RAS; 119991, Leninsky pr. 47 Moscow Russian Federation
| | - Gennady I. Kapustin
- Laboratory of Development and Study of Polyfunctional Catalysts; Zelinsky Institute of Organic Chemistry RAS; 119991, Leninsky pr. 47 Moscow Russian Federation
| | - Igor V. Mishin
- Laboratory of Development and Study of Polyfunctional Catalysts; Zelinsky Institute of Organic Chemistry RAS; 119991, Leninsky pr. 47 Moscow Russian Federation
| | - Olga P. Tkachenko
- Laboratory of Development and Study of Polyfunctional Catalysts; Zelinsky Institute of Organic Chemistry RAS; 119991, Leninsky pr. 47 Moscow Russian Federation
| | - Leonid M. Kustov
- Laboratory of Development and Study of Polyfunctional Catalysts; Zelinsky Institute of Organic Chemistry RAS; 119991, Leninsky pr. 47 Moscow Russian Federation
- Chemistry Department; Lomonosov Moscow State University; 119991, Leninskie gory 1 Moscow Russian Federation
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14
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Zhao Q, Dewhurst RD, Braunschweig H, Chen X. Boranchemie aus einer neuen Perspektive: Nukleophilie der B-H-Bindungselektronen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809733] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qianyi Zhao
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; 46 E. Jianshe Rd. Xinxiang Henan 453007 China
| | - Rian D. Dewhurst
- Institut für Anorganische Chemie und Institut für nachhaltige Chemie und Katalyse mit Bor; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
| | - Holger Braunschweig
- Institut für Anorganische Chemie und Institut für nachhaltige Chemie und Katalyse mit Bor; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
| | - Xuenian Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; 46 E. Jianshe Rd. Xinxiang Henan 453007 China
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou Henan 450001 China
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15
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Zhao Q, Dewhurst RD, Braunschweig H, Chen X. A New Perspective on Borane Chemistry: The Nucleophilicity of the B−H Bonding Pair Electrons. Angew Chem Int Ed Engl 2019; 58:3268-3278. [DOI: 10.1002/anie.201809733] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/22/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Qianyi Zhao
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; 46 E. Jianshe Rd. Xinxiang Henan 453007 China
| | - Rian D. Dewhurst
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institute for Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Xuenian Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; 46 E. Jianshe Rd. Xinxiang Henan 453007 China
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou Henan 450001 China
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16
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Bolt DA, Geib SJ, Curran DP. Synthesis and characterization of N-heterocyclic carbene complexes of 1,3,2-dioxaborolane-4,5-dione (NHC-boryl oxalates). Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Aubry B, Subervie D, Lansalot M, Bourgeat-Lami E, Graff B, Morlet-Savary F, Dietlin C, Fouassier JP, Lacôte E, Lalevée J. A Second-Generation Chameleon N-Heterocyclic Carbene–Borane Coinitiator for the Visible-Light Oxygen-Resistant Photopolymerization of Both Organic and Water-Compatible Resins. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01669] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Bérengère Aubry
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université
de Strasbourg, Strasbourg, France
| | - Daniel Subervie
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CNES, ArianeGroup, LHCEP, Bât. Raulin, 2 rue Victor Grignard, F-69622 Villeurbanne, France
- Univ Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, C2P2, 43 Bd du 11 novembre 1918, F-69616 Villeurbanne, France
| | - Muriel Lansalot
- Univ Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, C2P2, 43 Bd du 11 novembre 1918, F-69616 Villeurbanne, France
| | - Elodie Bourgeat-Lami
- Univ Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, C2P2, 43 Bd du 11 novembre 1918, F-69616 Villeurbanne, France
| | - Bernadette Graff
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université
de Strasbourg, Strasbourg, France
| | - Fabrice Morlet-Savary
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université
de Strasbourg, Strasbourg, France
| | - Céline Dietlin
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université
de Strasbourg, Strasbourg, France
| | - Jean-Pierre Fouassier
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université
de Strasbourg, Strasbourg, France
| | - Emmanuel Lacôte
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CNES, ArianeGroup, LHCEP, Bât. Raulin, 2 rue Victor Grignard, F-69622 Villeurbanne, France
| | - Jacques Lalevée
- Université de Haute-Alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France
- Université
de Strasbourg, Strasbourg, France
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18
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Radcliffe JE, Fasano V, Adams RW, You P, Ingleson MJ. Reductive α-borylation of α,β-unsaturated esters using NHC-BH 3 activated by I 2 as a metal-free route to α-boryl esters. Chem Sci 2018; 10:1434-1441. [PMID: 30809360 PMCID: PMC6354834 DOI: 10.1039/c8sc04305a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 11/17/2018] [Indexed: 11/21/2022] Open
Abstract
Useful α-boryl esters can be synthesized in one step from α,β-unsaturated esters using just a simple to access NHC-BH3 (NHC = N-heterocyclic carbene) and catalytic I2. The scope of this reductive α-borylation methodology is excellent and includes a range of alkyl, aryl substituted and cyclic and acyclic α,β-unsaturated esters. Mechanistic studies involving reductive borylation of a cyclic α,β-unsaturated ester with NHC-BD3/I2 indicated that concerted hydroboration of the alkene moiety in the α,β-unsaturated ester proceeds instead of a stepwise process involving initial 1,4-hydroboration; this is in contrast to the recently reported reductive α-silylation. The BH2(NHC) unit can be transformed into electrophilic BX2(NHC) moieties (X = halide) and the ester moiety can be reduced to the alcohol with the borane unit remaining intact to form β-boryl alcohols. The use of a chiral auxiliary, 8-phenylmenthyl ester, also enables effective stereo-control of the newly formed C-B bond. Combined two step ester reduction/borane oxidation forms diols, including excellent e.e. (97%) for the formation of S-3-phenylpropane-1,2-diol. This work represents a simple transition metal free route to form bench stable α-boryl esters from inexpensive starting materials.
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Affiliation(s)
- James E Radcliffe
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
| | - Valerio Fasano
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
| | - Ralph W Adams
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
| | - Peiran You
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
| | - Michael J Ingleson
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
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19
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Zhang PM, Li YW, Zhou J, Gan LL, Chen YJ, Gan ZJ, Yu Y. A One-pot Facile Synthesis of 2,3-Dihydroxyquinoxaline and 2,3-Dichloroquinoxaline Derivatives Using Silica Gel as an Efficient Catalyst. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3224] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Pei-Ming Zhang
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
| | - Yao-Wei Li
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
| | - Jing Zhou
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
| | - Lin-Ling Gan
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
| | - Yong-Jie Chen
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
| | - Zong-Jie Gan
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
| | - Yu Yu
- Department of Medicinal Chemistry, College of Pharmacy; Chongqing Medical University; Chongqing 400016 China
- Chongqing Research Center for Pharmaceutical Engineering; Chongqing Medical University; Chongqing 400016 China
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20
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Pak YL, Park SJ, Wu D, Cheon B, Kim HM, Bouffard J, Yoon J. N-Heterocyclic Carbene Boranes as Reactive Oxygen Species-Responsive Materials: Application to the Two-Photon Imaging of Hypochlorous Acid in Living Cells and Tissues. Angew Chem Int Ed Engl 2018; 57:1567-1571. [DOI: 10.1002/anie.201711188] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/08/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Yen Leng Pak
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - Sang Jun Park
- Department of Chemistry and Energy Systems Research; Ajou University; Suwon 443-749 Korea
| | - Di Wu
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - BoHyun Cheon
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - Hwan Myung Kim
- Department of Chemistry and Energy Systems Research; Ajou University; Suwon 443-749 Korea
| | - Jean Bouffard
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - Juyoung Yoon
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
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21
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Pak YL, Park SJ, Wu D, Cheon B, Kim HM, Bouffard J, Yoon J. N-Heterocyclic Carbene Boranes as Reactive Oxygen Species-Responsive Materials: Application to the Two-Photon Imaging of Hypochlorous Acid in Living Cells and Tissues. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711188] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yen Leng Pak
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - Sang Jun Park
- Department of Chemistry and Energy Systems Research; Ajou University; Suwon 443-749 Korea
| | - Di Wu
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - BoHyun Cheon
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - Hwan Myung Kim
- Department of Chemistry and Energy Systems Research; Ajou University; Suwon 443-749 Korea
| | - Jean Bouffard
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
| | - Juyoung Yoon
- Department of Chemistry and Nano Science (BK 21 Plus); Ewha Womans University; Seoul 03760 Korea
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22
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Watanabe T, Geib SJ, Curran DP, Taniguchi T. N-Heterocyclic Carbene Boranes are Hydrogen Donors in Masamune-Bergman Reactions of Benzo[3,4]cyclodec-3-ene-1,5-diynes. J Org Chem 2017; 82:13034-13042. [PMID: 29120175 DOI: 10.1021/acs.joc.7b01981] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thermal reactions of benzo[3,4]cyclodec-3-ene-1,5-diyne with N-heterocyclic carbene boranes (NHC-boranes) provided mixtures of 9-borylated 1,2,3,4-tetrahydroanthracenes along with 1,2,3,4-tetrahydroanthracene. These products indicate that NHC-boranes serve as hydrogen donors to a p-benzyne intermediate formed by the Masamune-Bergman reaction. Experimental results support a radical mechanism in nonpolar solvents, but suggest that ionic mechanisms compete in the production of 1,2,3,4-tetrahydroanthracene when the reaction is performed in a polar solvent.
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Affiliation(s)
- Takashi Watanabe
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Steven J Geib
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Dennis P Curran
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
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23
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Bolt DA, Curran DP. 1-Butyl-3-methylimidazol-2-ylidene Borane: A Readily Available, Liquid N-Heterocyclic Carbene Borane Reagent. J Org Chem 2017; 82:13746-13750. [PMID: 29117477 DOI: 10.1021/acs.joc.7b02730] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1-Butyl-3-methylimidazol-2-ylidene borane has been synthesized directly from two inexpensive commercial reagents: 1-butyl-3-methylimidazolium bromide and sodium borohydride. This NHC-borane reagent is a stable, free-flowing liquid that shows promise for use in radical, ionic, and metal-catalyzed reactions.
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Affiliation(s)
- Daniel A Bolt
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Dennis P Curran
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
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24
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Mandal T, Jana S, Dash J. Zinc-Mediated Efficient and Selective Reduction of Carbonyl Compounds. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700887] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tirtha Mandal
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; 700032 Jadavpur, Kolkata India
| | - Snehasish Jana
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; 700032 Jadavpur, Kolkata India
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; 700032 Jadavpur, Kolkata India
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25
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Billamboz M, Imbs C, Banaszak-Léonard E, Len C. Selective One-Pot Three-Step Cascade Reaction: From Aromatic Aldehydes to 2,2-Diphenylethanol Derivatives. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.6b00382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Muriel Billamboz
- Ecole Supérieure de Chimie Organique et Minérale, 1 rue du Réseau Jean-Marie
Buckmaster, F-60200 Compiègne, France
- Ecole des Hautes Etudes d’Ingénieur (HEI), Yncréa Hauts-de-France, UCLille, Laboratoire de Pharmacochimie, 13 Rue de Toul, F-59046 Lille, France
| | - Claire Imbs
- Sorbonne Universités, Université de Technologie de Compiègne, Centre de Recherche Royallieu, CS 60 319, F-60203 Compiègne cedex, France
| | - Estelle Banaszak-Léonard
- Ecole Supérieure de Chimie Organique et Minérale, 1 rue du Réseau Jean-Marie
Buckmaster, F-60200 Compiègne, France
| | - Christophe Len
- Sorbonne Universités, Université de Technologie de Compiègne, Centre de Recherche Royallieu, CS 60 319, F-60203 Compiègne cedex, France
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26
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Wang MH, Chen LY. An efficient FeCl 3 -mediated approach for reduction of ketones through N -heterocyclic carbene boranes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Tambutet G, Guindon Y. Diastereoselective Radical Hydrogen Transfer Reactions using N-Heterocyclic Carbene Boranes. J Org Chem 2016; 81:11427-11431. [DOI: 10.1021/acs.joc.6b02066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Guillaume Tambutet
- Bio-Organic
Chemistry Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec H2W 1R7, Canada
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Yvan Guindon
- Bio-Organic
Chemistry Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec H2W 1R7, Canada
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
- Department
of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 2K6, Canada
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28
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Huchenski BSN, Adams MR, McDonald R, Ferguson MJ, Speed AWH. Synthesis and Catalytic Reactivity of Bis(amino)cyclopropenylidene Carbene–Borane Adducts. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00654] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Blake S. N. Huchenski
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia, Canada B3H 4R2
| | - Matt R. Adams
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia, Canada B3H 4R2
| | - Robert McDonald
- X-ray
Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J. Ferguson
- X-ray
Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Alexander W. H. Speed
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia, Canada B3H 4R2
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29
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Bailey CL, Joh AY, Hurley ZQ, Anderson CL, Singaram B. Controlled Reduction of Tertiary Amides to the Corresponding Alcohols, Aldehydes, or Amines Using Dialkylboranes and Aminoborohydride Reagents. J Org Chem 2016; 81:3619-28. [DOI: 10.1021/acs.joc.6b00276] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher L. Bailey
- Department of Chemistry and
Biochemistry, University of California, Santa Cruz, 1156 High
Street, Santa Cruz, California 95064, United States
| | - Alexander Y. Joh
- Department of Chemistry and
Biochemistry, University of California, Santa Cruz, 1156 High
Street, Santa Cruz, California 95064, United States
| | - Zefan Q. Hurley
- Department of Chemistry and
Biochemistry, University of California, Santa Cruz, 1156 High
Street, Santa Cruz, California 95064, United States
| | - Christopher L. Anderson
- Department of Chemistry and
Biochemistry, University of California, Santa Cruz, 1156 High
Street, Santa Cruz, California 95064, United States
| | - Bakthan Singaram
- Department of Chemistry and
Biochemistry, University of California, Santa Cruz, 1156 High
Street, Santa Cruz, California 95064, United States
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30
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Liu T, Chen LY, Sun Z. Asymmetric Reduction of tert-Butanesulfinyl Ketimines by N-Heterocyclic Carbene Boranes. J Org Chem 2015; 80:11441-6. [DOI: 10.1021/acs.joc.5b02084] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Liu
- College of Chemistry and
Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, China
| | - Ling-yan Chen
- College of Chemistry and
Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, China
| | - Zhihua Sun
- College of Chemistry and
Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, China
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31
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Luca OR, Fenwick AQ. Organic reactions for the electrochemical and photochemical production of chemical fuels from CO2 – The reduction chemistry of carboxylic acids and derivatives as bent CO2 surrogates. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 152:26-42. [DOI: 10.1016/j.jphotobiol.2015.04.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 04/10/2015] [Accepted: 04/16/2015] [Indexed: 11/25/2022]
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32
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Damodaran K, Li X, Pan X, Curran DP. Dynamic Behavior of N-Heterocyclic Carbene Boranes: Boron–Carbene Bonds in B,B-Disubstituted N,N-Dimethylimidazol-2-ylidene Boranes Have Substantial Rotation Barriers. J Org Chem 2015; 80:4465-9. [DOI: 10.1021/acs.joc.5b00324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Krishnan Damodaran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Xiben Li
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Xiangcheng Pan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Dennis P. Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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33
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Bailey CL, Clary JW, Tansakul C, Klabunde L, Anderson CL, Joh AY, Lill AT, Peer N, Braslau R, Singaram B. Reduction of Weinreb amides to aldehydes under ambient conditions with magnesium borohydride reagents. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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Zhang YH, Wu MY, Huang WC. Silica gel-promoted practical synthesis of oxindole–nitrones from diazooxindoles and nitrosoarenes under solvent-free conditions. RSC Adv 2015. [DOI: 10.1039/c5ra21874h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A practical and efficient method for the synthesis of oxindole–nitrones from diazooxindoles and nitrosoarenes promoted by silica gel was developed.
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Affiliation(s)
- Yun-Hao Zhang
- Department of Pharmaceutical and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Ming-Yue Wu
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen 518055
- P. R. China
| | - Wen-Cai Huang
- Department of Pharmaceutical and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
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35
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Roy SR, Sau SC, Mandal SK. Chemoselective Reduction of the Carbonyl Functionality through Hydrosilylation: Integrating Click Catalysis with Hydrosilylation in One Pot. J Org Chem 2014; 79:9150-60. [DOI: 10.1021/jo501505j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Sudipta Raha Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741252, India
| | - Samaresh Chandra Sau
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741252, India
| | - Swadhin K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741252, India
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36
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Affiliation(s)
| | - Patrick Eisenberger
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L 3N6, Canada
| | - Cathleen M. Crudden
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L 3N6, Canada
- Institute of Transformative
Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, Japan
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37
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Kawamoto T, Okada T, Curran DP, Ryu I. Efficient hydroxymethylation reactions of iodoarenes using CO and 1,3-dimethylimidazol-2-ylidene borane. Org Lett 2013; 15:2144-7. [PMID: 23590524 DOI: 10.1021/ol4006294] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A hydroxymethylation reaction of a variety of iodoarenes proceeded effectively in the presence of CO, NHC-borane, diMeImd-BH3 (2) as a radical mediator, and a catalytic amount of AIBN. The reaction took place chemoselectively at the aryl-iodine bond but not at the aryl-bromine and aryl-chlorine bonds. A three-component coupling reaction comprising aryl iodides, CO, and electron-deficient alkenes also proceeded well to give unsymmetrical ketones in good yields. Control experiments show that 2 would act as a hydrogen donor to acyl radicals and iodinated NHC-borane as a reducing agent of aldehydes.
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Affiliation(s)
- Takuji Kawamoto
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
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38
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Lamm V, Pan X, Taniguchi T, Curran DP. Reductions of aldehydes and ketones with a readily available N-heterocyclic carbene borane and acetic acid. Beilstein J Org Chem 2013; 9:675-80. [PMID: 23616812 PMCID: PMC3629027 DOI: 10.3762/bjoc.9.76] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 03/18/2013] [Indexed: 12/04/2022] Open
Abstract
Acetic acid promotes the reduction of aldehydes and ketones by the readily available N-heterocyclic carbene borane, 1,3-dimethylimidazol-2-ylidene borane. Aldehydes are reduced over 1-24 h at room temperature with 1 equiv of acetic acid and 0.5 equiv of the NHC-borane. Ketone reductions are slower but can be accelerated by using 5 equiv of acetic acid. Aldehydes can be selectively reduced in the presence of ketones. On a small scale, products are isolated by evaporation of the reaction mixture and direct chromatography.
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Affiliation(s)
- Vladimir Lamm
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260 USA
| | - Xiangcheng Pan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260 USA
| | - Tsuyoshi Taniguchi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260 USA
| | - Dennis P Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260 USA
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39
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Gee YS, Abd El Kader KF, Hyland CJT. Synthetic methods: part (ii) oxidation and reduction methods. ANNUAL REPORTS SECTION "B" (ORGANIC CHEMISTRY) 2013; 109:103. [DOI: 10.1039/c3oc90011h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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40
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Toure M, Chuzel O, Parrain JL. Asymmetric Rhodium-Directed anti-Markovnikov Regioselective Boracyclopentannulation. J Am Chem Soc 2012; 134:17892-5. [DOI: 10.1021/ja309018f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Momar Toure
- Aix Marseille Université, CNRS, ISM2 UMR 7313, case
532, 13397, Marseille cedex 20, France
| | - Olivier Chuzel
- Aix Marseille Université, CNRS, ISM2 UMR 7313, case
532, 13397, Marseille cedex 20, France
| | - Jean-Luc Parrain
- Aix Marseille Université, CNRS, ISM2 UMR 7313, case
532, 13397, Marseille cedex 20, France
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