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Mahawar P, Rajeshkumar T, Maron L, Spaniol TP, Okuda J. Heterobimetallic Hydrides with a Germanium(II)-Zinc Bond. Chemistry 2023; 29:e202301496. [PMID: 37309983 DOI: 10.1002/chem.202301496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/14/2023]
Abstract
In the presence of TMEDA (TMEDA=N,N,N',N'-tetramethylethylenediamine), zinc dihydride reacted with germanium(II) compounds (BDI-H)Ge (1) and [(BDI)Ge][B(3,5-(CF3 )2 C6 H3 )4 ] (3) (BDI-H = HC{(C=CH2 )(CMe)(NAr)2 }, BDI = [HC(CMeNAr)2 ]; Ar = 2,6-i Pr2 C6 H3 ) by formal insertion of the germanium(II) center into the Zn-H bond of polymeric [ZnH2 ]n to give neutral and cationic zincagermane with a H-Ge-Zn-H core [(BDI-H)Ge(H)-(H)Zn(tmeda)] (2) and [(BDI)Ge(H)-(H)Zn(tmeda)][B(3,5-(CF3 )2 C6 H3 )4 ] (4), respectively. Compound 2 eliminated [ZnH2 ] giving diamido germylene 1 at 60 °C. Compound 2 and deuterated analogue 2-d2 exchanged with [ZnH2 ]n and [ZnD2 ]n in the presence of TMEDA to give a mixture of 2 and 2-d2 . Compounds 2 and 4 reacted with carbon dioxide (1 bar) at room temperature to form zincagermane diformate [(BDI-H)Ge(OCHO)-(OCHO)Zn(tmeda)] (5) and formate bridged digermylene [({BDI}Ge)2 (μ-OCHO)]+ [B(C6 H3 (CF3 )2 )4 ] (6) along with zinc formate [(tmeda)Zn(μ-OCHO)3 Zn(tmeda)][B(C6 H3 (CF3 )2 )4 ] (7), respectively. The hydridic nature of the Ge-H and Zn-H bonds in 2 and 4 was probed by reactions with Brönsted and Lewis acids.
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Affiliation(s)
- Pritam Mahawar
- Institute for Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - Thayalan Rajeshkumar
- CNRS, INSA, UPS, UMR 5215, LPCNO, Université de Toulouse, 35 Avenue de Rangueil, 31077, Toulouse, France
| | - Laurent Maron
- CNRS, INSA, UPS, UMR 5215, LPCNO, Université de Toulouse, 35 Avenue de Rangueil, 31077, Toulouse, France
| | - Thomas P Spaniol
- Institute for Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - Jun Okuda
- Institute for Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany
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2
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Morris LJ, Rajeshkumar T, Maron L, Okuda J. Reversible Oxidative Addition of Zinc Hydride at a Gallium(I)-Centre: Labile Mono- and Bis(hydridogallyl)zinc Complexes. Chemistry 2022; 28:e202201480. [PMID: 35819049 PMCID: PMC9804236 DOI: 10.1002/chem.202201480] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Indexed: 01/05/2023]
Abstract
In the presence of TMEDA (N,N,N',N'-tetramethylethylenediamine), partially deaggregated zinc dihydride as hydrocarbon suspensions react with the gallium(I) compound [(BDI)Ga] (I, BDI={HC(C(CH3 )N(2,6-iPr2 -C6 H3 ))2 }- ) by formal oxidative addition of a Zn-H bond to the gallium(I) centre. Dissociation of the labile TMEDA ligand in the resulting complex [(BDI)Ga(H)-(H)Zn(tmeda)] (1) facilitates insertion of a second equiv. of I into the remaining Zn-H to form a thermally sensitive trinuclear species [{(BDI)Ga(H)}2 Zn] (2). Compound 1 exchanges with polymeric zinc dideuteride [ZnD2 ]n in the presence of TMEDA, and with compounds I and 2 via sequential and reversible ligand dissociation and gallium(I) insertion. Spectroscopic and computational studies demonstrate the reversibility of oxidative addition of each Zn-H bond to the gallium(I) centres.
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Affiliation(s)
- Louis J. Morris
- Institute for Inorganic ChemistryRWTH Aachen University52062AachenGermany
- Chemistry Research LaboratoryUniversity of OxfordOxfordOX1 3TAUnited Kingdom
| | | | - Laurent Maron
- CNRSINSAUPSUMR 5215LPCNOUniversité de Toulouse31077ToulouseFrance
| | - Jun Okuda
- Institute for Inorganic ChemistryRWTH Aachen University52062AachenGermany
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3
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Sahoo RK, Sarkar N, Nembenna S. Zinc Hydride Catalyzed Chemoselective Hydroboration of Isocyanates: Amide Bond Formation and C=O Bond Cleavage. Angew Chem Int Ed Engl 2021; 60:11991-12000. [PMID: 33638314 DOI: 10.1002/anie.202100375] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/16/2021] [Indexed: 12/15/2022]
Abstract
Herein, a remarkable conjugated bis-guanidinate (CBG) supported zinc hydride, [{LZnH}2 ; L={(ArHN)(ArN)-C=N-C=(NAr)(NHAr); Ar=2,6-Et2 -C6 H3 }] (I) catalyzed partial reduction of heteroallenes via hydroboration is reported. A large number of aryl and alkyl isocyanates, including electron-donating and withdrawing groups, undergo reduction to obtain selectively N-boryl formamide, bis(boryl) hemiaminal and N-boryl methyl amine products. The compound I effectively catalyzes the chemoselective reduction of various isocyanates, in which the construction of the amide bond occurs. Isocyanates undergo a deoxygenation hydroboration reaction, in which the C=O bond cleaves, leading to N-boryl methyl amines. Several functionalities such as nitro, cyano, halide, and alkene groups are well-tolerated. Furthermore, a series of kinetic, control experiments and structurally characterized intermediates suggest that the zinc hydride species are responsible for all reduction steps and breaking the C=O bond.
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Affiliation(s)
- Rajata Kumar Sahoo
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Nabin Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
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4
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Chambenahalli R, Bhargav RM, McCabe KN, Andrews AP, Ritter F, Okuda J, Maron L, Venugopal A. Cationic Zinc Hydride Catalyzed Carbon Dioxide Reduction to Formate: Deciphering Elementary Reactions, Isolation of Intermediates, and Computational Investigations. Chemistry 2021; 27:7391-7401. [PMID: 33459452 DOI: 10.1002/chem.202005392] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/11/2021] [Indexed: 01/06/2023]
Abstract
Zinc has been an element of choice for carbon dioxide reduction in recent years. Zinc compounds have been showcased as catalysts for carbon dioxide hydrosilylation and hydroboration. The extent of carbon dioxide reduction can depend on various factors, including electrophilicity at the zinc center and the denticity of the ancillary ligands. In a few cases, the addition of Lewis acids to zinc hydride catalysts markedly influences carbon dioxide reduction. These factors have been investigated by exploring elementary reactions of carbon dioxide hydrosilylation and hydroboration by using cationic zinc hydrides bearing tetradentate tris[2-(dimethylamino)ethyl]amine and tridentate N,N,N',N'',N''-pentamethyldiethylenetriamine in the presence of triphenylborane and tris(pentafluorophenyl)borane.
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Affiliation(s)
- Raju Chambenahalli
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Vithura, Thiruvananthapuram, 695551, India
| | - R M Bhargav
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Vithura, Thiruvananthapuram, 695551, India
| | - Karl N McCabe
- LPCNO, UMR 5215, Université de Toulouse-CNRS, INSA, UPS, 31077, Toulouse, France
| | - Alex P Andrews
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Vithura, Thiruvananthapuram, 695551, India
| | - Florian Ritter
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Laurent Maron
- LPCNO, UMR 5215, Université de Toulouse-CNRS, INSA, UPS, 31077, Toulouse, France
| | - Ajay Venugopal
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Vithura, Thiruvananthapuram, 695551, India
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5
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Zinc Hydride Catalyzed Chemoselective Hydroboration of Isocyanates: Amide Bond Formation and C=O Bond Cleavage. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100375] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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6
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Specklin D, Fliedel C, Dagorne S. Recent Representative Advances on the Synthesis and Reactivity of N-Heterocyclic-Carbene-Supported Zinc Complexes. CHEM REC 2021; 21:1130-1143. [PMID: 33792152 DOI: 10.1002/tcr.202100041] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/12/2021] [Indexed: 12/21/2022]
Abstract
The present account reviews the most recent noteworthy developments on the synthesis, structure and catalytic applications of Zn-NHC species, a class of complexes that have attracted attention over the past five to ten years due to their enhanced robustness and hydrolytic stability versus classical Zn organometallics. In particular, thanks to NHC stabilization, access to unprecedented Zn species were recently achieved, including two-coordinate Zn(II) organocations and thermally stable molecularly well-defined Zn hydride species, opening the way to effective Zn-mediated hydro-silylation/-boration catalysis of various unsaturated substrates under mild conditions. The potential of NHC-Zn species for the stabilization of unprecedented Zn species and use in various catalytic applications is only emerging and the vast array of readily available NHC structures should promote future developments of the field.
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Affiliation(s)
- David Specklin
- Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4, rue Blaise Pascal, 67000, Strasbourg, France
| | - Christophe Fliedel
- Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4, rue Blaise Pascal, 67000, Strasbourg, France
| | - Samuel Dagorne
- Institut de Chimie (UMR CNRS 7177), Université de Strasbourg, 4, rue Blaise Pascal, 67000, Strasbourg, France
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7
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Ritter F, Spaniol TP, Douair I, Maron L, Okuda J. Molecular Zinc Hydride Cations [ZnH] + : Synthesis, Structure, and CO 2 Hydrosilylation Catalysis. Angew Chem Int Ed Engl 2020; 59:23335-23342. [PMID: 32931656 PMCID: PMC7756573 DOI: 10.1002/anie.202011480] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Indexed: 01/12/2023]
Abstract
Protonolysis of [ZnH2 ]n with the conjugated Brønsted acid of the bidentate diamine TMEDA (N,N,N',N'-tetramethylethane-1,2-diamine) and TEEDA (N,N,N',N'-tetraethylethane-1,2-diamine) gave the zinc hydride cation [(L2 )ZnH]+ , isolable either as the mononuclear THF adduct [(L2 )ZnH(thf)]+ [BArF 4 ]- (L2 =TMEDA; BArF 4 - =[B(3,5-(CF3 )2 -C6 H3 )4 ]- ) or as the dimer [{(L2 )Zn)}2 (μ-H)2 ]2+ [BArF 4 ]- 2 (L2 =TEEDA). In contrast to [ZnH2 ]n , the cationic zinc hydrides are thermally stable and soluble in THF. [(L2 )ZnH]+ was also shown to form di- and trinuclear adducts of the elusive neutral [(L2 )ZnH2 ]. All hydride-containing cations readily inserted CO2 to give the corresponding formate complexes. [(TMEDA)ZnH]+ [BArF 4 ]- catalyzed the hydrosilylation of CO2 with tertiary hydrosilanes to give stepwise formoxy silane, methyl formate, and methoxy silane. The unexpected formation of methyl formate was shown to result from the zinc-catalyzed transesterification of methoxy silane with formoxy silane, which was eventually converted into methoxy silane as well.
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Affiliation(s)
- Florian Ritter
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152056AachenGermany
| | - Thomas P. Spaniol
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152056AachenGermany
| | - Iskander Douair
- CNRSINSAUPSUMR 5215LPCNOUniversité de Toulouse135 avenue de Rangueil31077ToulouseFrance
| | - Laurent Maron
- CNRSINSAUPSUMR 5215LPCNOUniversité de Toulouse135 avenue de Rangueil31077ToulouseFrance
| | - Jun Okuda
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152056AachenGermany
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8
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Molekulare Zinkhydridkationen [ZnH]
+
: Synthese, Struktur und CO
2
‐Hydrosilylierungskatalyse. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Zhang X, Wang L, Wang Q, Ge F, Wang X. Synthesis, Characterization of Pyridyl Heterocyclic Olefins (PHOs) and Activation of Heterocumulenes. ChemistrySelect 2019. [DOI: 10.1002/slct.201902563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xianhui Zhang
- Key Laboratory of Biobased MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences 189 Songling Road Qingdao 266101 China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 10049 China
| | - Liang Wang
- Key Laboratory of Biobased MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences 189 Songling Road Qingdao 266101 China
| | - Qinggang Wang
- Key Laboratory of Biobased MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences 189 Songling Road Qingdao 266101 China
| | - Fang Ge
- College of Chemistry and Chemical EngineeringQingdao University Shandong 266071 China
| | - Xiaowu Wang
- Key Laboratory of Biobased MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences 189 Songling Road Qingdao 266101 China
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10
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Ong DY, Yen Z, Yoshii A, Revillo Imbernon J, Takita R, Chiba S. Controlled Reduction of Carboxamides to Alcohols or Amines by Zinc Hydrides. Angew Chem Int Ed Engl 2019; 58:4992-4997. [DOI: 10.1002/anie.201900233] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/09/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Derek Yiren Ong
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Zhihao Yen
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Asami Yoshii
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Julia Revillo Imbernon
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Ryo Takita
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shunsuke Chiba
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
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11
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Ong DY, Yen Z, Yoshii A, Revillo Imbernon J, Takita R, Chiba S. Controlled Reduction of Carboxamides to Alcohols or Amines by Zinc Hydrides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Derek Yiren Ong
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Zhihao Yen
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Asami Yoshii
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Julia Revillo Imbernon
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Ryo Takita
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Shunsuke Chiba
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
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12
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Harinath A, Bhattcharjee J, Gorantla KR, Mallik BS, Panda TK. Hydroboration, Cyanosilylation, and Sequential Cyanosilylation and Hydroboration of Carbonyl Compounds in the Presence of a TiIV
Amido Complex as an Efficient Catalyst. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800547] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Adimulam Harinath
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Jayeeta Bhattcharjee
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Koteswar Rao Gorantla
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Bhabani S. Mallik
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Tarun K. Panda
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
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13
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Rit A, Wiegand A, Mukherjee D, Spaniol TP, Okuda J. Zinc Dihydride and Mixed Halo Hydrides Supported by an N‐Heterocyclic Carbene. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701425] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Arnab Rit
- Institute of Inorganic Chemistry RWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Ann‐Kristin Wiegand
- Institute of Inorganic Chemistry RWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Debabrata Mukherjee
- Institute of Inorganic Chemistry RWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry RWTH Aachen University Landoltweg 1 52056 Aachen Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry RWTH Aachen University Landoltweg 1 52056 Aachen Germany
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14
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Marquardt C, Hegen O, Vogel A, Stauber A, Bodensteiner M, Timoshkin AY, Scheer M. Depolymerization of Poly(phosphinoboranes): From Polymers to Lewis Base Stabilized Monomers. Chemistry 2017; 24:360-363. [PMID: 29166549 DOI: 10.1002/chem.201705510] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Indexed: 01/10/2023]
Abstract
We report on depolymerization reactions of poly(phosphinoboranes). The cleavage of the polymers [H2 PBH2 ]n (2 a), [tBuHPBH2 ]n (2 c), [PhHPBH2 ]n (2 e) and the oligomer [Ph2 PBH2 ]n (2 b), with strong Lewis bases (LBs), in particular with NHCs, leads to the corresponding monomeric phosphanylboranes R1 R2 PBH2 LB. It is observed that the depolymerization depends on the strength and stability of the LBs as well as on the substitution pattern of the poly(phosphinoboranes). The solid state structures of the monomeric phosphinoboranes H2 PBH2 NHCMe (NHC=N-heterocyclic carbene) (4 a), H2 PBH2 NHCdipp (5 a) and tBuHPBH2 NHCMe (4 c) were determined. DFT calculations support the experimentally observed reaction behavior.
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Affiliation(s)
- Christian Marquardt
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Oliver Hegen
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Ariane Vogel
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Andreas Stauber
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Michael Bodensteiner
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, 199034 Universitetskaya emb. 7/9, St. Petersburg, Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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15
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Accessing Two-Coordinate ZnII
Organocations by NHC Coordination: Synthesis, Structure, and Use as π-Lewis Acids in Alkene, Alkyne, and CO2
Hydrosilylation. Chemistry 2017; 23:15908-15912. [DOI: 10.1002/chem.201704382] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Indexed: 11/07/2022]
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16
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Osseili H, Mukherjee D, Spaniol TP, Okuda J. Ligand Influence on Carbonyl Hydroboration Catalysis by Alkali Metal Hydridotriphenylborates [(L)M][HBPh3
] (M=Li, Na, K). Chemistry 2017; 23:14292-14298. [DOI: 10.1002/chem.201702818] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Hassan Osseili
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
| | - Debabrata Mukherjee
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
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17
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Specklin D, Fliedel C, Gourlaouen C, Bruyere J, Avilés T, Boudon C, Ruhlmann L, Dagorne S. N‐Heterocyclic Carbene Based Tri‐organyl‐Zn–Alkyl Cations: Synthesis, Structures, and Use in CO
2
Functionalization. Chemistry 2017; 23:5509-5519. [DOI: 10.1002/chem.201605907] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 02/17/2017] [Indexed: 01/18/2023]
Affiliation(s)
- David Specklin
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
| | - Christophe Fliedel
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia Universidade Nova de Lisboa 2829-516 Caparica Portugal
| | - Christophe Gourlaouen
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
| | - Jean‐Charles Bruyere
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
| | - Teresa Avilés
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia Universidade Nova de Lisboa 2829-516 Caparica Portugal
| | - Corinne Boudon
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
| | - Laurent Ruhlmann
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg, CNRS Université de Strasbourg 1, rue Blaise Pascal 67000 Strasbourg France
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18
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Iversen KJ, Dutton JL, Wilson DJD. Insertion of Group 12–16 Hydrides into NHCs: A Theoretical Investigation. Chem Asian J 2017; 12:1499-1508. [DOI: 10.1002/asia.201700082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/06/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Kalon J. Iversen
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne Victoria 3086 Australia
| | - Jason L. Dutton
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne Victoria 3086 Australia
| | - David J. D. Wilson
- Department of Chemistry and Physics La Trobe Institute for Molecular Science La Trobe University Melbourne Victoria 3086 Australia
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Hering-Junghans C, Andreiuk P, Ferguson MJ, McDonald R, Rivard E. Der Einsatz von N-heterocyclischen Vinylliganden zur Isolierung stabiler Divinylgermylene und eines Germylium-Kations. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609100] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Christian Hering-Junghans
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive Edmonton Alberta T6G 2G2 Kanada
| | - Patricia Andreiuk
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive Edmonton Alberta T6G 2G2 Kanada
| | - Michael J. Ferguson
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive Edmonton Alberta T6G 2G2 Kanada
| | - Robert McDonald
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive Edmonton Alberta T6G 2G2 Kanada
| | - Eric Rivard
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive Edmonton Alberta T6G 2G2 Kanada
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20
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Hering-Junghans C, Andreiuk P, Ferguson MJ, McDonald R, Rivard E. Using N-Heterocyclic Vinyl Ligands to Access Stable Divinylgermylenes and a Germylium Cation. Angew Chem Int Ed Engl 2016; 56:6272-6275. [PMID: 28510351 DOI: 10.1002/anie.201609100] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Indexed: 11/11/2022]
Abstract
Two efficient methods are presented to install σ- and π-electron-donating N-heterocyclic vinyl groups onto main-group elements (E): halosilane elimination and base-induced E-C bond formation. Placement of two NHC=CH- ligands (NHC=N-heterocyclic carbene) onto a GeII center affords a two-coordinate germylene, a heavy congener of the elusive divinyl carbenes. The π-donating ability of this vinylic ligand scaffold was further demonstrated by the synthesis of a three-coordinate germylium cation R3 Ge+ .
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Affiliation(s)
- Christian Hering-Junghans
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
| | - Patricia Andreiuk
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
| | - Michael J Ferguson
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
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21
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Roy MMD, Ferguson MJ, McDonald R, Rivard E. Investigation of N-Heterocyclic Carbene-Supported Group 12 Triflates as Pre-catalysts for Hydrosilylation/Borylation. Chemistry 2016; 22:18236-18246. [PMID: 27797137 DOI: 10.1002/chem.201603704] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Indexed: 11/09/2022]
Abstract
N-Heterocyclic carbene (NHC) complexes of Cd and Hg triflates (OTf) were prepared and their attempted conversion into rare cadmium and mercury hydrides was explored. In contrast to zinc, which forms stable [ZnH]+ complexes with NHCs, the heavier Cd and Hg congeners could not be formed; the increased instability of Cd-H and Hg-H units was rationalized with the aid of computations. It was also discovered that the dimeric adduct [IPr⋅Cd(μ-OTf)2 ]2 (IPr=[(HCNDipp)2 C:]; Dipp=2,6-iPr2 C6 H3 ) is an active precatalyst for the hydrosilylation and hydroborylation of hindered aldehydes and ketones. The related zinc congener was inactive as a catalyst highlighting a distinct advantage of using heavy Group 12 metals to promote catalytic hydrosilylation/borylation.
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Affiliation(s)
- Matthew M D Roy
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, AB, T6E 2G2, Canada
| | - Michael J Ferguson
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, AB, T6E 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, AB, T6E 2G2, Canada
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, AB, T6E 2G2, Canada
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22
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Zhang G, Zeng H, Wu J, Yin Z, Zheng S, Fettinger JC. Highly Selective Hydroboration of Alkenes, Ketones and Aldehydes Catalyzed by a Well-Defined Manganese Complex. Angew Chem Int Ed Engl 2016; 55:14369-14372. [DOI: 10.1002/anie.201607579] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/07/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Guoqi Zhang
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
| | - Haisu Zeng
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - Jing Wu
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - Zhiwei Yin
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - Shengping Zheng
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - James C. Fettinger
- Department of Chemistry; University of California Davis; Davis CA 95616 USA
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23
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Zhang G, Zeng H, Wu J, Yin Z, Zheng S, Fettinger JC. Highly Selective Hydroboration of Alkenes, Ketones and Aldehydes Catalyzed by a Well-Defined Manganese Complex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607579] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Guoqi Zhang
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
| | - Haisu Zeng
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - Jing Wu
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - Zhiwei Yin
- Department of Sciences, John Jay College and Ph.D. in Chemistry Program; The Graduate Center of City University of New York; New York NY 10019 USA
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - Shengping Zheng
- Department of Chemistry, Hunter College; City University of New York; New York NY 10065 USA
| | - James C. Fettinger
- Department of Chemistry; University of California Davis; Davis CA 95616 USA
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24
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Roy MMD, Ferguson MJ, Rivard E. N-Heterocyclic Carbene Reactivity Towards Mercurous Chloride. Z Anorg Allg Chem 2016. [DOI: 10.1002/zaac.201600304] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Matthew M. D. Roy
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive AB T6E 2G2 Edmonton Canada
| | - Michael J. Ferguson
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive AB T6E 2G2 Edmonton Canada
| | - Eric Rivard
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Drive AB T6E 2G2 Edmonton Canada
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25
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Fohlmeister L, Stasch A. Ring-Shaped Phosphinoamido-Magnesium-Hydride Complexes: Syntheses, Structures, Reactivity, and Catalysis. Chemistry 2016; 22:10235-46. [PMID: 27271460 DOI: 10.1002/chem.201601623] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Indexed: 11/10/2022]
Abstract
A series of magnesium(II) complexes bearing the sterically demanding phosphinoamide ligand, L(-) =Ph2 PNDip(-) , Dip=2,6-diisopropylphenyl, including heteroleptic magnesium alkyl and hydride complexes are described. The ligand geometry enforces various novel ring and cluster geometries for the heteroleptic compounds. We have studied the stoichiometric reactivity of [(LMgH)4 ] towards unsaturated substrates, and investigated catalytic hydroborations and hydrosilylations of ketones and pyridines. We found that hydroborations of two ketones with pinacolborane using various Mg precatalysts is very rapid at room temperature with very low catalyst loadings, and ketone hydrosilylation using phenylsilane is rapid at 70 °C. Our studies point to an insertion/σ-bond metathesis catalytic cycle of an in situ formed "MgH2 " active species.
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Affiliation(s)
- Lea Fohlmeister
- School of Chemistry, Monash University, 17 Rainforest Walk, Melbourne, Victoria, 3800, Australia
| | - Andreas Stasch
- School of Chemistry, Monash University, 17 Rainforest Walk, Melbourne, Victoria, 3800, Australia. .,School of Chemistry, University of St Andrews, North Haugh, St. Andrews, KY16 9ST, UK.
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26
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Bose SK, Deißenberger A, Eichhorn A, Steel PG, Lin Z, Marder TB. Zinc‐Catalyzed Dual C–X and C–H Borylation of Aryl Halides. Angew Chem Int Ed Engl 2015; 54:11843-7. [DOI: 10.1002/anie.201505603] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Shubhankar Kumar Bose
- Institut für Anorganische Chemie, Julius‐Maximilians‐Universität Würzburg, Am Hubland, 97074 Würzburg (Germany)
| | - Andrea Deißenberger
- Institut für Anorganische Chemie, Julius‐Maximilians‐Universität Würzburg, Am Hubland, 97074 Würzburg (Germany)
| | - Antonius Eichhorn
- Institut für Anorganische Chemie, Julius‐Maximilians‐Universität Würzburg, Am Hubland, 97074 Würzburg (Germany)
| | - Patrick G. Steel
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE (UK)
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (China)
| | - Todd B. Marder
- Institut für Anorganische Chemie, Julius‐Maximilians‐Universität Würzburg, Am Hubland, 97074 Würzburg (Germany)
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Bose SK, Deißenberger A, Eichhorn A, Steel PG, Lin Z, Marder TB. Simultane Zink-katalysierte C-X- und C-H-Borylierung von Arylhalogeniden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505603] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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28
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Swarnakar AK, Hering-Junghans C, Nagata K, Ferguson MJ, McDonald R, Tokitoh N, Rivard E. Encapsulating Inorganic Acetylene, HBNH, Using Flanking Coordinative Interactions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201504867] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Swarnakar AK, Hering-Junghans C, Nagata K, Ferguson MJ, McDonald R, Tokitoh N, Rivard E. Stabilisierung von anorganischem Acetylen, HBNH, mithilfe flankierender koordinativer Wechselwirkungen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504867] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Ding G, Lu B, Li Y, Wan J, Zhang Z, Xie X. Zinc-Catalyzed Selective Reduction of Cyclic Imides with Hydrosilanes: Synthesis of ω-Hydroxylactams. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400961] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Chong CC, Hirao H, Kinjo R. Metal‐Free σ‐Bond Metathesis in 1,3,2‐Diazaphospholene‐Catalyzed Hydroboration of Carbonyl Compounds. Angew Chem Int Ed Engl 2014; 54:190-4. [DOI: 10.1002/anie.201408760] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/17/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Che Chang Chong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
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32
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Chong CC, Hirao H, Kinjo R. Metal‐Free σ‐Bond Metathesis in 1,3,2‐Diazaphospholene‐Catalyzed Hydroboration of Carbonyl Compounds. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408760] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Che Chang Chong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
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33
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Rit A, Zanardi A, Spaniol TP, Maron L, Okuda J. Ein kationischer Zinkhydridcluster, stabilisiert durch ein N-heterocyclisches Carben: Synthese, Reaktivität und Hydrosilylierungskatalyse. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408346] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Rit A, Zanardi A, Spaniol TP, Maron L, Okuda J. A Cationic Zinc Hydride Cluster Stabilized by an N-Heterocyclic Carbene: Synthesis, Reactivity, and Hydrosilylation Catalysis. Angew Chem Int Ed Engl 2014; 53:13273-7. [DOI: 10.1002/anie.201408346] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Indexed: 11/09/2022]
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