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Chen Q, Zhu Y, Shi X, Huang R, Jiang C, Zhang K, Liu G. Light-driven redox deracemization of indolines and tetrahydroquinolines using a photocatalyst coupled with chiral phosphoric acid. Chem Sci 2023; 14:1715-1723. [PMID: 36819858 PMCID: PMC9930931 DOI: 10.1039/d2sc06340a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/09/2023] [Indexed: 01/11/2023] Open
Abstract
The integration of oxidation and enantioselective reduction enables a redox deracemization to directly access enantioenriched products from their corresponding racemates. However, the solution of the kinetically microscopic reversibility of substrates used in this oxidation/reduction unidirectional event is a great challenge. To address this issue, we have developed a light-driven strategy to enable an efficient redox deracemization of cyclamines. The method combines a photocatalyst and a chiral phosphoric acid in a toluene/aqueous cyclodextrin emulsion biphasic co-solvent system to drive the cascade out-of-equilibrium. Systemic optimizations achieve a feasible oxidation/reduction cascade sequence, and mechanistic investigations demonstrate a unidirectional process. This single-operation cascade route, which involves initial photocatalyzed oxidation of achiral cyclamines to cyclimines and subsequent chiral phosphoric acid-catalyzed enantioselective reduction of cyclimines to chiral cyclamines, is suitable for constructing optically pure indolines and tetrahydroquinolines.
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Affiliation(s)
- Qipeng Chen
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Yuanli Zhu
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Xujing Shi
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Renfu Huang
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Chuang Jiang
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Kun Zhang
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
| | - Guohua Liu
- International Joint Laboratory on Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 P. R. China
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2
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Mayer RJ, Moran J. Quantification of the hydride donor abilities of NADH, NADPH, and BH 3CN - in water. Org Biomol Chem 2022; 21:85-88. [PMID: 36472236 PMCID: PMC9768570 DOI: 10.1039/d2ob02041f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The nucleophilic reactivities of the hydride donors NADH, NADPH, and BH3CN- in water were quantified using kinetic measurements with benzhydrylium ions as reference electrophiles. All three hydride donors were found to possess almost identical nucleophilic reactivities, providing a potential explanation for why they are involved in similar transformations in biochemistry and organic synthesis, respectively.
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Affiliation(s)
- Robert J. Mayer
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg8 Allée Gaspard Monge67000 StrasbourgFrance
| | - Joseph Moran
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg8 Allée Gaspard Monge67000 StrasbourgFrance,Institut Universitaire de France (IUF)75005 ParisFrance
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3
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Pandey VK, Sahoo S, Rit A. Simple silver(I)-salt catalyzed selective hydroboration of isocyanates, pyridines, and quinolines. Chem Commun (Camb) 2022; 58:5514-5517. [PMID: 35420096 DOI: 10.1039/d2cc00491g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
AgSbF6 has been established as an effective catalyst for the hydroboration of structurally and electronically diverse isocyanates under ligand- and solvent-free conditions which selectively yielded either N-boryl formamides or N-boryl methylamines under different conditions. Further, various N-heterocycles can be selectively hydroborated using this simple catalytic system; pyridine derivatives undergo preferential 1,4 hydroboration whereas the formation of tetrahydroquinoline (after hydrolysis) via complete heterocycle hydrogenation was observed for quinolines.
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Affiliation(s)
- Vipin K Pandey
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Sangita Sahoo
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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4
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Pang M, Shi LL, Xie Y, Geng T, Liu L, Liao RZ, Tung CH, Wang W. Cobalt-Catalyzed Selective Dearomatization of Pyridines to N–H 1,4-Dihydropyridines. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maofu Pang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Le-Le Shi
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yufang Xie
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Tianyi Geng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Lan Liu
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Wenguang Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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5
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Zhang J, Yang JD, Cheng JP. Recent progress in reactivity study and synthetic application of N-heterocyclic phosphorus hydrides. Natl Sci Rev 2021; 8:nwaa253. [PMID: 34691616 PMCID: PMC8288402 DOI: 10.1093/nsr/nwaa253] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/15/2020] [Accepted: 09/15/2020] [Indexed: 11/23/2022] Open
Abstract
N-heterocyclic phosphines (NHPs) have recently emerged as a new group of promising catalysts for metal-free reductions, owing to their unique hydridic reactivity. The excellent hydricity of NHPs, which rivals or even exceeds those of many metal-based hydrides, is the result of hyperconjugative interactions between the lone-pair electrons on N atoms and the adjacent σ*(P–H) orbital. Compared with the conventional protic reactivity of phosphines, this umpolung P–H reactivity leads to hydridic selectivity in NHP-mediated reductions. This reactivity has therefore found many applications in the catalytic reduction of polar unsaturated bonds and in the hydroboration of pyridines. This review summarizes recent progress in studies of the reactivity and synthetic applications of these phosphorus-based hydrides, with the aim of providing practical information to enable exploitation of their synthetically useful chemistry.
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
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6
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Sakurai H. The Dawn of Sumanene Chemistry: My Personal History with π-Figuration. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hidehiro Sakurai
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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7
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Zhang L, Zhu R, Feng A, Zhao C, Chen L, Feng G, Liu L. Redox deracemization of β,γ-alkynyl α-amino esters. Chem Sci 2020; 11:4444-4449. [PMID: 34122901 PMCID: PMC8159540 DOI: 10.1039/d0sc00944j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The first non-enzymatic redox deracemization method using molecular oxygen as the terminal oxidant has been described. The one-pot deracemization of β,γ-alkynyl α-amino esters consisted of a copper-catalyzed aerobic oxidation and chiral phosphoric acid-catalyzed asymmetric transfer hydrogenation with excellent functional group compatibility. By using benzothiazoline as the reducing reagent, an exclusive chemoselectivity at the C
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N bond over the C
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C bond was achieved, allowing for efficient deracemization of a series of α-amino esters bearing diverse α-alkynyl substituent patterns. The origins of chemo- and enantio-selectivities were elucidated by experimental and computational mechanistic investigation. The generality of the strategy is further demonstrated by efficient deracemization of β,γ-alkenyl α-amino esters. A one-pot deracemization of β,γ-alkynyl α-amino esters consisting of an aerobic oxidation and chiral phosphoric acid-catalyzed asymmetric transfer hydrogenation has been described.![]()
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Affiliation(s)
- Lu Zhang
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
| | - Aili Feng
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
| | - Changyin Zhao
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
| | - Lei Chen
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China
| | - Guidong Feng
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China
| | - Lei Liu
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China .,School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
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8
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Zhang J, Yang JD, Cheng JP. Diazaphosphinanes as hydride, hydrogen atom, proton or electron donors under transition-metal-free conditions: thermodynamics, kinetics, and synthetic applications. Chem Sci 2020; 11:3672-3679. [PMID: 34094055 PMCID: PMC8152589 DOI: 10.1039/c9sc05883d] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Exploration of new hydrogen donors is in large demand in hydrogenation chemistry. Herein, we developed a new 1,3,2-diazaphosphinane 1a, which can serve as a hydride, hydrogen atom or proton donor without transition-metal mediation. The thermodynamics and kinetics of these three pathways of 1a, together with those of its analog 1b, were investigated in acetonitrile. It is noteworthy that, the reduction potentials (Ered) of the phosphenium cations 1a-[P]+ and 1b-[P]+ are extremely low, being −1.94 and −2.39 V (vs. Fc+/0), respectively, enabling corresponding phosphinyl radicals to function as neutral super-electron-donors. Kinetic studies revealed an extraordinarily large kinetic isotope effect KIE(1a) of 31.3 for the hydrogen atom transfer from 1a to the 2,4,6-tri-(tert-butyl)-phenoxyl radical, implying a tunneling effect. Furthermore, successful applications of these diverse P–H bond energetic parameters in organic syntheses were exemplified, shedding light on more exploitations of these versatile and powerful diazaphosphinane reagents in organic chemistry. A new 1,3,2-diazaphosphinane, serving as a formal hydride, hydrogen-atom or proton donor without transition-metal mediation was exploited thermodynamically and kinetically. And, its promising potentials in versatile syntheses have been demonstrated.![]()
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University Beijing 100084 China .,State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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9
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Tatunashvili E, Chan B, Nashar PE, McErlean CSP. σ-Bond initiated generation of aryl radicals from aryl diazonium salts. Org Biomol Chem 2020; 18:1812-1819. [PMID: 32096533 DOI: 10.1039/d0ob00205d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
σ-Bond nucleophiles and molecular oxygen transform aryl diazonium salts into aryl radicals. Experimental and computational studies show that Hantzsch esters transfer hydride to aryl diazonium species, and that oxygen initiates radical fragmentation of the diazene intermediate to produce aryl radicals. The operational simplicity of this addition-fragmentation process for the generation of aryl radicals, by a polar-radical crossover mechanism, has been illustrated in a variety of bond-forming reactions.
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Affiliation(s)
| | - Bun Chan
- Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki-shi, Nagasaki 852-8521, Japan
| | - Philippe E Nashar
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
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10
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Nielsen CDT, White AJP, Sale D, Bures J, Spivey AC. Hydroarylation of Alkenes by Protonation/Friedel–Crafts Trapping: HFIP-Mediated Access to Per-aryl Quaternary Stereocenters. J Org Chem 2019; 84:14965-14973. [DOI: 10.1021/acs.joc.9b02393] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christian D.-T. Nielsen
- Imperial College London, White City Campus,
Molecular Sciences Research Hub (MSRH), 80 Wood Lane, London W12 0BZ, United Kingdom
| | - Andrew J. P. White
- Imperial College London, White City Campus,
Molecular Sciences Research Hub (MSRH), 80 Wood Lane, London W12 0BZ, United Kingdom
| | - David Sale
- Process Studies Group, Syngenta, Jealott’s Hill, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Jordi Bures
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Alan C. Spivey
- Imperial College London, White City Campus,
Molecular Sciences Research Hub (MSRH), 80 Wood Lane, London W12 0BZ, United Kingdom
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11
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Yuan M, Mbaezue II, Zhou Z, Topic F, Tsantrizos YS. P-Chiral, N-phosphoryl sulfonamide Brønsted acids with an intramolecular hydrogen bond interaction that modulates organocatalysis. Org Biomol Chem 2019; 17:8690-8694. [PMID: 31535120 DOI: 10.1039/c9ob01774g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Brønsted acids exemplified by OttoPhosa I (5c) were designed and evaluated in the asymmetric transfer hydrogenation of quinolines. Their catalytic properties are modulated by an intramolecular hydrogen bond that rigidifies their catalytic cavity, accelerates the reaction rate and improves enantioselectivity.
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Affiliation(s)
- Minglei Yuan
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8.
| | - Ifenna I Mbaezue
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8.
| | - Zhi Zhou
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8.
| | - Filip Topic
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8.
| | - Youla S Tsantrizos
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8.
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12
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Lim CH, Ilic S, Alherz A, Worrell BT, Bacon SS, Hynes JT, Glusac KD, Musgrave CB. Benzimidazoles as Metal-Free and Recyclable Hydrides for CO 2 Reduction to Formate. J Am Chem Soc 2018; 141:272-280. [PMID: 30477302 DOI: 10.1021/jacs.8b09653] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a novel metal-free chemical reduction of CO2 by a recyclable benzimidazole-based organo-hydride, whose choice was guided by quantum chemical calculations. Notably, benzimidazole-based hydride donors rival the hydride-donating abilities of noble-metal-based hydrides such as [Ru(tpy)(bpy)H]+ and [Pt(depe)2H]+. Chemical CO2 reduction to the formate anion (HCOO-) was carried out in the absence of biological enzymes, a sacrificial Lewis acid, or a base to activate the substrate or reductant. 13CO2 experiments confirmed the formation of H13COO- by CO2 reduction with the formate product characterized by 1H NMR and 13C NMR spectroscopy and ESI-MS. The highest formate yield of 66% was obtained in the presence of potassium tetrafluoroborate under mild conditions. The likely role of exogenous salt additives in this reaction is to stabilize and shift the equilibrium toward the ionic products. After CO2 reduction, the benzimidazole-based hydride donor was quantitatively oxidized to its aromatic benzimidazolium cation, establishing its recyclability. In addition, we electrochemically reduced the benzimidazolium cation to its organo-hydride form in quantitative yield, demonstrating its potential for electrocatalytic CO2 reduction. These results serve as a proof of concept for the electrocatalytic reduction of CO2 by sustainable, recyclable, and metal-free organo-hydrides.
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Affiliation(s)
- Chern-Hooi Lim
- Department of Chemical and Biological Engineering , University of Colorado , Boulder , Colorado 80309 , United States.,Department of Chemistry , University of Colorado , Boulder , Colorado 80309 , United States
| | - Stefan Ilic
- Department of Chemistry , University of Illinois at Chicago , Chicago , Illinois 60607 , United States.,Chemical Sciences and Engineering Division , Argonne National Laboratory , Lemont , Illinois 60439 , United States
| | - Abdulaziz Alherz
- Department of Chemical and Biological Engineering , University of Colorado , Boulder , Colorado 80309 , United States
| | - Brady T Worrell
- Department of Chemical and Biological Engineering , University of Colorado , Boulder , Colorado 80309 , United States
| | - Samuel S Bacon
- Department of Chemical and Biological Engineering , University of Colorado , Boulder , Colorado 80309 , United States
| | - James T Hynes
- Department of Chemistry , University of Colorado , Boulder , Colorado 80309 , United States.,PASTEUR, Département de Chimie, École Normale Supérieure, UPMC Univ. Paris 06, CNRS, PSL Research University , 75005 Paris , France.,Sorbonne Universités, UPMC Univ. Paris 06, École Normale Supérieure, CNRS, PASTEUR , 75005 Paris , France
| | - Ksenija D Glusac
- Department of Chemistry , University of Illinois at Chicago , Chicago , Illinois 60607 , United States.,Chemical Sciences and Engineering Division , Argonne National Laboratory , Lemont , Illinois 60439 , United States
| | - Charles B Musgrave
- Department of Chemical and Biological Engineering , University of Colorado , Boulder , Colorado 80309 , United States.,Department of Chemistry , University of Colorado , Boulder , Colorado 80309 , United States.,Materials Science and Engineering Program , University of Colorado , Boulder , Colorado 80309 , United States.,National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
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13
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Fan Q, Sun R, Zhao Z, Yan H. Synthesis and theoretical study of pyrrole formiate derivatives through ring contraction of 1,4-dihydropyridines. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.11.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Tamang SR, Singh A, Unruh DK, Findlater M. Nickel-Catalyzed Regioselective 1,4-Hydroboration of N-Heteroarenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01166] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sem Raj Tamang
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Arpita Singh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Daniel K. Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Michael Findlater
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
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15
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Tan Q, Kaewmati P, Higashibayashi S, Kawano M, Yakiyama Y, Sakurai H. Triazasumanene: An Isoelectronic Heteroanalogue of Sumanene. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170384] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Qitao Tan
- Center of Integrative Molecular Systems, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Baoshan District, Shanghai 200444, P. R. China
| | - Patcharin Kaewmati
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shuhei Higashibayashi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Masaki Kawano
- Department of Chemistry, Graduate School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yumi Yakiyama
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hidehiro Sakurai
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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16
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Ilic S, Pandey Kadel U, Basdogan Y, Keith JA, Glusac KD. Thermodynamic Hydricities of Biomimetic Organic Hydride Donors. J Am Chem Soc 2018; 140:4569-4579. [DOI: 10.1021/jacs.7b13526] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Stefan Ilic
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Usha Pandey Kadel
- Department of Chemistry, Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Yasemin Basdogan
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - John A. Keith
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Ksenija D. Glusac
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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17
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Bähr S, Oestreich M. A Neutral RuII
Hydride Complex for the Regio- and Chemoselective Reduction of N
-Silylpyridinium Ions. Chemistry 2018; 24:5613-5622. [DOI: 10.1002/chem.201705899] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Susanne Bähr
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
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18
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Alherz A, Lim CH, Hynes JT, Musgrave CB. Predicting Hydride Donor Strength via Quantum Chemical Calculations of Hydride Transfer Activation Free Energy. J Phys Chem B 2018; 122:1278-1288. [PMID: 29251933 DOI: 10.1021/acs.jpcb.7b12093] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We propose a method to approximate the kinetic properties of hydride donor species by relating the nucleophilicity (N) of a hydride to the activation free energy ΔG⧧ of its corresponding hydride transfer reaction. N is a kinetic parameter related to the hydride transfer rate constant that quantifies a nucleophilic hydridic species' tendency to donate. Our method estimates N using quantum chemical calculations to compute ΔG⧧ for hydride transfers from hydride donors to CO2 in solution. A linear correlation for each class of hydrides is then established between experimentally determined N values and the computationally predicted ΔG⧧; this relationship can then be used to predict nucleophilicity for different hydride donors within each class. This approach is employed to determine N for four different classes of hydride donors: two organic (carbon-based and benzimidazole-based) and two inorganic (boron and silicon) hydride classes. We argue that silicon and boron hydrides are driven by the formation of the more stable Si-O or B-O bond. In contrast, the carbon-based hydrides considered herein are driven by the stability acquired upon rearomatization, a feature making these species of particular interest, because they both exhibit catalytic behavior and can be recycled.
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Affiliation(s)
- Abdulaziz Alherz
- Department of Chemical and Biological Engineering, University of Colorado , Boulder, Colorado 80309, United States
| | - Chern-Hooi Lim
- Department of Chemical and Biological Engineering, University of Colorado , Boulder, Colorado 80309, United States.,Department of Chemistry and Biochemistry, University of Colorado , Boulder, Colorado 80309, United States
| | - James T Hynes
- Department of Chemistry and Biochemistry, University of Colorado , Boulder, Colorado 80309, United States.,Chemistry Department, Ecole Normale Supérieure-PSL Research University, Sorbonne Universités-UPMC University Paris 06 , CNRS UMR 8640 Pasteur, 24 rue Lhomond, 75005 Paris, France
| | - Charles B Musgrave
- Department of Chemical and Biological Engineering, University of Colorado , Boulder, Colorado 80309, United States.,Department of Chemistry and Biochemistry, University of Colorado , Boulder, Colorado 80309, United States.,Materials Science and Engineering Program, University of Colorado , Boulder, Colorado 80309, United States
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19
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Ilic S, Alherz A, Musgrave CB, Glusac KD. Thermodynamic and kinetic hydricities of metal-free hydrides. Chem Soc Rev 2018; 47:2809-2836. [DOI: 10.1039/c7cs00171a] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Thermodynamic and kinetic hydricities provide useful guidelines for the design of hydride donors with desirable properties for catalytic chemical reductions.
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Affiliation(s)
- Stefan Ilic
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
- Chemical Sciences and Engineering Division
| | - Abdulaziz Alherz
- Department of Chemical and Biological Engineering
- University of Colorado
- Boulder
- USA
| | - Charles B. Musgrave
- Department of Chemical and Biological Engineering
- University of Colorado
- Boulder
- USA
- Department of Chemistry and Biochemistry
| | - Ksenija D. Glusac
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
- Chemical Sciences and Engineering Division
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20
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Zhang F, Song H, Zhuang X, Tung CH, Wang W. Iron-Catalyzed 1,2-Selective Hydroboration of N-Heteroarenes. J Am Chem Soc 2017; 139:17775-17778. [DOI: 10.1021/jacs.7b11416] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Fanjun Zhang
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Heng Song
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Xuewen Zhuang
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Chen-Ho Tung
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Wenguang Wang
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
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21
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Ruhland K, Frenzel R, Horny R, Nizamutdinova A, van Wüllen L, Moosburger-Will J, Horn S. Investigation of the chemical changes during thermal treatment of polyacrylonitrile and 15N-labelled polyacrylonitrile by means of in-situ FTIR and 15N NMR spectroscopy. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.10.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Đorđević N, Ganguly R, Petković M, Vidović D. E–H (E = B, Si, C) Bond Activation by Tuning Structural and Electronic Properties of Phosphenium Cations. Inorg Chem 2017; 56:14671-14681. [DOI: 10.1021/acs.inorgchem.7b02579] [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)
- Nemanja Đorđević
- SPMS-CBC, Nanyang Technological University, 21 Nanyang Link, Singapore 638737
| | - Rakesh Ganguly
- SPMS-CBC, Nanyang Technological University, 21 Nanyang Link, Singapore 638737
| | - Milena Petković
- Faculty
of Physical Chemistry, University of Belgrade, 11000 Belgrade, Republic of Serbia
| | - Dragoslav Vidović
- SPMS-CBC, Nanyang Technological University, 21 Nanyang Link, Singapore 638737
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23
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Parmar D, Sugiono E, Raja S, Rueping M. Addition and Correction to Complete Field Guide to Asymmetric BINOL-Phosphate Derived Brønsted Acid and Metal Catalysis: History and Classification by Mode of Activation; Brønsted Acidity, Hydrogen Bonding, Ion Pairing, and Metal Phosphates. Chem Rev 2017; 117:10608-10620. [DOI: 10.1021/acs.chemrev.7b00197] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Lim CH, Holder AM, Hynes JT, Musgrave CB. Dihydropteridine/Pteridine as a 2H +/2e - Redox Mediator for the Reduction of CO 2 to Methanol: A Computational Study. J Phys Chem B 2017; 121:4158-4167. [PMID: 28375636 DOI: 10.1021/acs.jpcb.7b01224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Conflicting experimental results for the electrocatalytic reduction of CO2 to CH3OH on a glassy carbon electrode by the 6,7-dimethyl-4-hydroxy-2-mercaptopteridine have been recently reported [ J. Am. Chem. Soc. 2014 , 136 , 14007 - 14010 , J. Am. Chem. Soc. 2016 , 138 , 1017 - 1021 ]. In this connection, we have used computational chemistry to examine the issue of this molecule's ability to act as a hydride donor to reduce CO2. We first determined that the most thermodynamically stable tautomer of this aqueous compound is its oxothione form, termed here PTE. It is argued that this species electrochemically undergoes concerted 2H+/2e- transfers to first form the kinetic product 5,8-dihydropteridine, followed by acid-catalyzed tautomerization to the thermodynamically more stable 7,8-dihydropteridine PTEH2. While the overall conversion of CO2 to CH3OH by three successive hydride and proton transfers from this most stable tautomer is computed to be exergonic by 5.1 kcal/mol, we predict high activation free energies (ΔG‡HT) of 29.0 and 29.7 kcal/mol for the homogeneous reductions of CO2 and its intermediary formic acid product by PTE/PTEH2, respectively. These high barriers imply that PTE/PTEH2 is unable, by this mechanism, to homogeneously reduce CO2 on a time scale of hours at room temperature.
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Affiliation(s)
| | - Aaron M Holder
- National Renewable Energy Laboratory , Golden, Colorado 80401, United States
| | - James T Hynes
- Chemistry Department, Ecole Normale Supérieure-PSL Research University, Sorbonne Universités-UPMC University Paris 06, CNRS UMR 8640 , Pasteur, 24 rue Lhomond, 75005 Paris, France
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25
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Scattolin T, Deckers K, Schoenebeck F. Efficient Synthesis of Trifluoromethyl Amines through a Formal Umpolung Strategy from the Bench-Stable Precursor (Me 4 N)SCF 3. Angew Chem Int Ed Engl 2017; 56:221-224. [PMID: 27936300 PMCID: PMC6680219 DOI: 10.1002/anie.201609480] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/18/2016] [Indexed: 11/18/2022]
Abstract
Reported herein is the one-pot synthesis of trifluoromethylated amines at room temperature using the bench-stable (Me4 N)SCF3 reagent and AgF. The method is rapid, operationally simple and highly selective. It proceeds via a formal umpolung reaction of the SCF3 with the amine, giving quantitative formation of thiocarbamoyl fluoride intermediates within minutes that can readily be transformed to N-CF3 . The mildness and high functional group tolerance render the method highly attractive for the late-stage introduction of trifluoromethyl groups on amines, as demonstrated herein for a range of pharmaceutically relevant drug molecules.
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Affiliation(s)
- Thomas Scattolin
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Kristina Deckers
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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26
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Meng FK, Zhu XQ. Elemental steps of the thermodynamics of dihydropyrimidine: a new class of organic hydride donors. Org Biomol Chem 2016; 15:197-206. [PMID: 27892585 DOI: 10.1039/c6ob02195f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
25 Dihydropyrimidine derivatives, a new class of organo-hydrides, were designed and synthesized by the Biginelli reaction. For the first time, the thermodynamic driving forces of the six elemental steps to obtain a hydride in acetonitrile were determined by isothermal titration and electrochemical methods, respectively. The effects of molecular structures and substituents on these thermodynamic parameters were examined, uncovering some interesting structure-reactivity relationships. Both the thermodynamic and kinetic studies show that the hydride transfer from dihydropyrimidines to 9-phenylxanthylium (PhXn+ClO4-) prefers a concerted mechanism.
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Affiliation(s)
- Fan-Kun Meng
- The State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China.
| | - Xiao-Qing Zhu
- The State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China.
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27
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Scattolin T, Deckers K, Schoenebeck F. Efficient Synthesis of Trifluoromethyl Amines through a Formal Umpolung Strategy from the Bench‐Stable Precursor (Me
4
N)SCF
3. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609480] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thomas Scattolin
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Kristina Deckers
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
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28
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Chen MW, Wu B, Chen ZP, Shi L, Zhou YG. Synthesis of Chiral Fluorinated Propargylamines via Chemoselective Biomimetic Hydrogenation. Org Lett 2016; 18:4650-3. [DOI: 10.1021/acs.orglett.6b02283] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mu-Wang Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Bo Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhang-Pei Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Lei Shi
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- State Key Laboratory of Organometallic Chemistry, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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29
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Wiedner ES, Chambers MB, Pitman CL, Bullock RM, Miller AJM, Appel AM. Thermodynamic Hydricity of Transition Metal Hydrides. Chem Rev 2016; 116:8655-92. [PMID: 27483171 DOI: 10.1021/acs.chemrev.6b00168] [Citation(s) in RCA: 298] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Transition metal hydrides play a critical role in stoichiometric and catalytic transformations. Knowledge of free energies for cleaving metal hydride bonds enables the prediction of chemical reactivity, such as for the bond-forming and bond-breaking events that occur in a catalytic reaction. Thermodynamic hydricity is the free energy required to cleave an M-H bond to generate a hydride ion (H(-)). Three primary methods have been developed for hydricity determination: the hydride transfer method establishes hydride transfer equilibrium with a hydride donor/acceptor pair of known hydricity, the H2 heterolysis method involves measuring the equilibrium of heterolytic cleavage of H2 in the presence of a base, and the potential-pKa method considers stepwise transfer of a proton and two electrons to give a net hydride transfer. Using these methods, over 100 thermodynamic hydricity values for transition metal hydrides have been determined in acetonitrile or water. In acetonitrile, the hydricity of metal hydrides spans a range of more than 50 kcal/mol. Methods for using hydricity values to predict chemical reactivity are also discussed, including organic transformations, the reduction of CO2, and the production and oxidation of hydrogen.
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Affiliation(s)
- Eric S Wiedner
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
| | - Matthew B Chambers
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Catherine L Pitman
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - R Morris Bullock
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
| | - Alexander J M Miller
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Aaron M Appel
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
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30
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Georgieva MK, Duarte FJS, Santos AG. Directed electrostatic activation in enantioselective organocatalytic cyclopropanation reactions: a computational study. Org Biomol Chem 2016; 14:5965-82. [PMID: 27223461 DOI: 10.1039/c6ob00748a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cyclopropane rings are versatile building blocks in organic chemistry. Their synthesis, by the reaction of sulfur ylides with α,β-unsaturated carbonyl compounds, has recently aroused renewed interest after the discovery of efficient catalysis by using (S)-indoline-2-carboxylic acid. In order to rationalize the behavior of this catalyst, MacMillan proposed a directed electrostatic activation (DEA) mechanism, in which the negative carboxylate group interacts with the positive thionium moiety, thus reducing the activation energy and increasing the reaction rate. More recently, Mayr refuted some of MacMillan conclusions, but accepted the DEA mechanism as a justification for the experimental high reaction rates. In contrast, our results indicate that the selectivity obtained in the process seems to result from several strong hydrogen bond interactions between the two reacting species, while no strong evidence for a DEA mechanism was found. We also concluded that the hydrogen bonds don't improve the reaction rate by lowering the activation energy of the rate-determining step, but can do it by promoting efficient reaction trajectories due to long-range complexation of the reagents. Finally, our results confirm that the cyclopropanation reaction occurs by a two-step mechanism, and that the overall enantioselectivity depends on the relative energies of the two steps, averaged by the relative populations of the iminium intermediates that are initially formed in the reaction.
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Affiliation(s)
- Miglena K Georgieva
- LAQV-REQUIMTE, Department of Chemistry, Faculty of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
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31
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Van Arman SA, Zimmet AJ, Murray IE. A Hantzsch Amido Dihydropyridine as a Transfer Hydrogenation Reagent for α,β-Unsaturated Ketones. J Org Chem 2016; 81:3528-32. [DOI: 10.1021/acs.joc.6b00041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Scott A. Van Arman
- Department of Chemistry, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, United States
| | - Austin J. Zimmet
- Department of Chemistry, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, United States
| | - Ian E. Murray
- Department of Chemistry, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, United States
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32
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Zhang F, Jia J, Dong S, Wang W, Tung CH. Hydride Transfer from Iron(II) Hydride Compounds to NAD(P)+ Analogues. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00179] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fanjun Zhang
- Key Laboratory of Colloid and
Interface Chemistry, Ministry of Education, School of Chemistry and
Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, People’s Republic of China
| | - Jiong Jia
- Key Laboratory of Colloid and
Interface Chemistry, Ministry of Education, School of Chemistry and
Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, People’s Republic of China
| | - Shuli Dong
- Key Laboratory of Colloid and
Interface Chemistry, Ministry of Education, School of Chemistry and
Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, People’s Republic of China
| | - Wenguang Wang
- Key Laboratory of Colloid and
Interface Chemistry, Ministry of Education, School of Chemistry and
Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, People’s Republic of China
| | - Chen-Ho Tung
- Key Laboratory of Colloid and
Interface Chemistry, Ministry of Education, School of Chemistry and
Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, People’s Republic of China
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33
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Aufiero M, Scattolin T, Proutière F, Schoenebeck F. Air-Stable Dinuclear Iodine-Bridged Pd(I) Complex - Catalyst, Precursor, or Parasite? The Additive Decides. Systematic Nucleophile-Activity Study and Application as Precatalyst in Cross-Coupling. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00766] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marialuisa Aufiero
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
- Laboratory
for Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Thomas Scattolin
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Fabien Proutière
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
- Laboratory
for Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Franziska Schoenebeck
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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34
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Zapata-Urzúa C, Pérez-Ortiz M, Acosta GA, Mendoza J, Yedra L, Estradé S, Álvarez-Lueje A, Núñez-Vergara LJ, Albericio F, Lavilla R, Kogan MJ. Hantzsch dihydropyridines: Privileged structures for the formation of well-defined gold nanostars. J Colloid Interface Sci 2015; 453:260-269. [DOI: 10.1016/j.jcis.2015.04.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 04/09/2015] [Accepted: 04/24/2015] [Indexed: 10/23/2022]
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35
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Follet E, Berionni G, Mayer P, Mayr H. Structure and Reactivity of Indolylmethylium Ions: Scope and Limitations in Synthetic Applications. J Org Chem 2015. [PMID: 26218059 DOI: 10.1021/acs.joc.5b01298] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Eight substituted aryl(indol-3-yl)methylium tetrafluoroborates 3(a-h)-BF4 and three bis(indol-3-yl)methylium tetrafluoroborates 3(i-k)-BF4 have been synthesized and characterized by NMR spectroscopy and X-ray crystallography. Their reactions with π-nucleophiles 8(a-j) (silylated enol ethers and ketene acetals) were studied kinetically using photometric monitoring at 20 °C. The resulting second-order rate constants were found to follow the correlation log k(20 °C) = sN(N + E), in which nucleophiles are characterized by the two solvent-dependent parameters N and sN, and electrophiles are characterized by one parameter, E. From the previously reported N and sN parameters of the employed nucleophiles and the measured rate constants, the electrophilicities of the indol-3-ylmethylium ions 3(a-k) were derived and used to predict potential nucleophilic reaction partners. A discrepancy between published rate constants for the reactions of morpholine and piperidine with the (2-methylindol-3-yl)phenylmethylium ion 3h and those calculated from E, N, and sN was analyzed and demonstrated to be due to a mistake of the value reported in the literature.
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Affiliation(s)
- Elsa Follet
- Department Chemie, Ludwig-Maximilians-Universität München , Butenandtstrasse 5-13, Haus F, 81377 München, Germany
| | - Guillaume Berionni
- Department Chemie, Ludwig-Maximilians-Universität München , Butenandtstrasse 5-13, Haus F, 81377 München, Germany
| | - Peter Mayer
- Department Chemie, Ludwig-Maximilians-Universität München , Butenandtstrasse 5-13, Haus F, 81377 München, Germany
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München , Butenandtstrasse 5-13, Haus F, 81377 München, Germany
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36
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Tussing S, Greb L, Tamke S, Schirmer B, Muhle-Goll C, Luy B, Paradies J. Autoinduced catalysis and inverse equilibrium isotope effect in the frustrated Lewis pair catalyzed hydrogenation of imines. Chemistry 2015; 21:8056-9. [PMID: 25877865 DOI: 10.1002/chem.201500805] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 01/07/2023]
Abstract
The frustrated Lewis pair (FLP)-catalyzed hydrogenation and deuteration of N-benzylidene-tert-butylamine (2) was kinetically investigated by using the three boranes B(C6F5)3 (1), B(2,4,6-F3-C6H2)3 (4), and B(2,6-F2-C6H3)3 (5) and the free activation energies for the H2 activation by FLP were determined. Reactions catalyzed by the weaker Lewis acids 4 and 5 displayed autoinductive catalysis arising from a higher free activation energy (2 kcal mol(-1)) for the H2 activation by the imine compared to the amine. Surprisingly, the imine reduction using D2 proceeded with higher rates. This phenomenon is unprecedented for FLP and resulted from a primary inverse equilibrium isotope effect.
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Affiliation(s)
- Sebastian Tussing
- Institute of Organic Chemistry, University of Paderborn, Warburger Straße 100, 33098 Paderborn (Germany)
| | - Lutz Greb
- Institute of Organic Chemistry, University of Paderborn, Warburger Straße 100, 33098 Paderborn (Germany)
| | - Sergej Tamke
- Institute of Organic Chemistry, University of Paderborn, Warburger Straße 100, 33098 Paderborn (Germany)
| | - Birgitta Schirmer
- Center for Multiscale Theory and Computation (CMTC) und Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster (Germany)
| | - Claudia Muhle-Goll
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe (Germany)
| | - Burkhard Luy
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe (Germany).,Department Magnetic Resonance of the Institute for Biological Interfaces, Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 (Germany)
| | - Jan Paradies
- Institute of Organic Chemistry, University of Paderborn, Warburger Straße 100, 33098 Paderborn (Germany).
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37
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Benzhydrylium and tritylium ions: complementary probes for examining ambident nucleophiles. PURE APPL CHEM 2015. [DOI: 10.1515/pac-2014-1116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe linear free energy relationship log k = sN(N + E) (eq. 1), in which E is an electrophilicity, N is a nucleophilicity, and sN is a nucleophile-dependent sensitivity parameter, is a reliable tool for predicting rate constants of bimolecular electrophile-nucleophile combinations. Nucleophilicity scales that are based on eq. (1) rely on a set of structurally similar benzhydrylium ions (Ar2CH+) as reference electrophiles. As steric effects are not explicitely considered, eq. (1) cannot unrestrictedly be employed for reactions of bulky substrates. Since, on the other hand, the reactions of tritylium ions (Ar3C+) with hydride donors, alcohols, and amines were found to follow eq. (1), tritylium ions turned out to be complementary tools for probing organic reactivity. Kinetics of the reactions of Ar3C+ with π-nucleophiles (olefins), n-nucleophiles (amines, alcohols, water), hydride donors and ambident nucleophiles, such as the anions of 5-substituted Meldrum’s acids, are discussed to analyze the applicability of tritylium ions as reference electrophiles.
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38
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Pace V, Holzer W, Olofsson B. Increasing the Reactivity of Amides towards Organometallic Reagents: An Overview. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400630] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Lim CH, Holder AM, Hynes JT, Musgrave CB. Reduction of CO2 to Methanol Catalyzed by a Biomimetic Organo-Hydride Produced from Pyridine. J Am Chem Soc 2014; 136:16081-95. [DOI: 10.1021/ja510131a] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | | | - James T. Hynes
- Chemistry
Department, Ecole Normale Supérieure, UMR ENS-CNRS-UPMC 8640, 24 rue Lhomond, 75005 Paris, France
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40
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Parmar D, Sugiono E, Raja S, Rueping M. Complete field guide to asymmetric BINOL-phosphate derived Brønsted acid and metal catalysis: history and classification by mode of activation; Brønsted acidity, hydrogen bonding, ion pairing, and metal phosphates. Chem Rev 2014; 114:9047-153. [PMID: 25203602 DOI: 10.1021/cr5001496] [Citation(s) in RCA: 1508] [Impact Index Per Article: 150.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dixit Parmar
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
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41
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Chen X, Tan Y, Berionni G, Ofial AR, Mayr H. Di- and Triarylmethylium Ions as Probes for the Ambident Reactivities of Carbanions Derived from 5-Benzylated Meldrum’s Acid. Chemistry 2014; 20:11069-77. [DOI: 10.1002/chem.201403161] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Indexed: 11/08/2022]
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42
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Chen ZP, Chen MW, Guo RN, Zhou YG. 4,5-Dihydropyrrolo[1,2-a]quinoxalines: A Tunable and Regenerable Biomimetic Hydrogen Source. Org Lett 2014; 16:1406-9. [DOI: 10.1021/ol500176v] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zhang-Pei Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
| | - Mu-Wang Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
| | - Ran-Ning Guo
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
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43
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McSkimming A, Colbran SB. The coordination chemistry of organo-hydride donors: new prospects for efficient multi-electron reduction. Chem Soc Rev 2013; 42:5439-88. [PMID: 23507957 DOI: 10.1039/c3cs35466k] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In biological reduction processes the dihydronicotinamides NAD(P)H often transfer hydride to an unsaturated substrate bound within an enzyme active site. In many cases, metal ions in the active site bind, polarize and thereby activate the substrate to direct attack by hydride from NAD(P)H cofactor. This review looks more widely at the metal coordination chemistry of organic donors of hydride ion--organo-hydrides--such as dihydronicotinamides, other dihydropyridines including Hantzsch's ester and dihydroacridine derivatives, those derived from five-membered heterocycles including the benzimidazolines and benzoxazolines, and all-aliphatic hydride donors such as hexadiene and hexadienyl anion derivatives. The hydride donor properties--hydricities--of organo-hydrides and how these are affected by metal ions are discussed. The coordination chemistry of organo-hydrides is critically surveyed and the use of metal-organo-hydride systems in electrochemically-, photochemically- and chemically-driven reductions of unsaturated organic and inorganic (e.g. carbon dioxide) substrates is highlighted. The sustainable electrocatalytic, photochemical or chemical regeneration of organo-hydrides such as NAD(P)H, including for driving enzyme-catalysed reactions, is summarised and opportunities for development are indicated. Finally, new prospects are identified for metal-organo-hydride systems as catalysts for organic transformations involving 'hydride-borrowing' and for sustainable multi-electron reductions of unsaturated organic and inorganic substrates directly driven by electricity or light or by renewable reductants such as formate/formic acid.
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Affiliation(s)
- Alex McSkimming
- School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia
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Sugiono E, Rueping M. A combined continuous microflow photochemistry and asymmetric organocatalysis approach for the enantioselective synthesis of tetrahydroquinolines. Beilstein J Org Chem 2013; 9:2457-62. [PMID: 24367413 PMCID: PMC3869216 DOI: 10.3762/bjoc.9.284] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 10/18/2013] [Indexed: 01/30/2023] Open
Abstract
A continuous-flow asymmetric organocatalytic photocyclization-transfer hydrogenation cascade reaction has been developed. The new protocol allows the synthesis of tetrahydroquinolines from readily available 2-aminochalcones using a combination of photochemistry and asymmetric Brønsted acid catalysis. The photocylization and subsequent reduction was performed with catalytic amount of chiral BINOL derived phosphoric acid diester and Hantzsch dihydropyridine as hydrogen source providing the desired products in good yields and with excellent enantioselectivities.
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Affiliation(s)
- Erli Sugiono
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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45
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Hsiao CC, Liao HH, Sugiono E, Atodiresei I, Rueping M. Shedding Light on Organocatalysis-Light-Assisted Asymmetric Ion-Pair Catalysis for the Enantioselective Hydrogenation of Pyrylium Ions. Chemistry 2013; 19:9775-9. [DOI: 10.1002/chem.201300766] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/26/2013] [Indexed: 11/08/2022]
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46
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Greb L, Daniliuc CG, Bergander K, Paradies J. Toleranz gegenüber funktionellen Gruppen bei frustrierten Lewis-Paaren: Hydrierung von Nitroolefinen und Acrylaten. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201210175] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Greb L, Daniliuc CG, Bergander K, Paradies J. Functional-Group Tolerance in Frustrated Lewis Pairs: Hydrogenation of Nitroolefins and Acrylates. Angew Chem Int Ed Engl 2013; 52:5876-9. [DOI: 10.1002/anie.201210175] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Revised: 02/10/2013] [Indexed: 11/11/2022]
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48
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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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49
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Zhu XQ, Deng FH, Yang JD, Li XT, Chen Q, Lei NP, Meng FK, Zhao XP, Han SH, Hao EJ, Mu YY. A classical but new kinetic equation for hydride transfer reactions. Org Biomol Chem 2013; 11:6071-89. [DOI: 10.1039/c3ob40831k] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Liao HH, Hsiao CC, Sugiono E, Rueping M. Shedding light on Brønsted acid catalysis – a photocyclization–reduction reaction for the asymmetric synthesis of tetrahydroquinolines from aminochalcones in batch and flow. Chem Commun (Camb) 2013; 49:7953-5. [DOI: 10.1039/c3cc43996h] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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