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Bhattacharjee J, Harinath A, Bano K, Panda TK. Highly Chemoselective Hydroboration of Alkynes and Nitriles Catalyzed by Group 4 Metal Amidophosphine-Borane Complexes. ACS OMEGA 2020; 5:1595-1606. [PMID: 32010834 PMCID: PMC6990649 DOI: 10.1021/acsomega.9b03598] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/26/2019] [Indexed: 06/10/2023]
Abstract
We report a series of titanium and zirconium complexes supported by dianionic amidophosphine-borane ligands, synthesized by amine elimination and salt metathesis reactions. The TiIV complex [{Ph2P(BH3)N}2C6H4Ti(NMe2)2] (1) was obtained by the reaction between tetrakis-(dimethylamido)titanium(IV) and the protic aminophosphine-borane ligand [{Ph2P(BH3)NH}2C6H4] (LH2) at ambient temperature. Both the heteroleptic zirconium complexes-[η5-(C5H5)2Zr{Ph2P(BH3)N}2C6H4] (2) and [[{Ph2P(BH3)N}2C6H4]ZrCl2] (3)-and the homoleptic zirconium complex [[{Ph2P(BH3)N}2C6H4]2Zr] (4) were obtained in good yield by the salt metathesis reaction of either zirconocene dichloride [η5-(C5H5)2ZrCl2] or zirconium tetrachloride with the dilithium salt of the ligand [{Ph2P(BH3)NLi}2C6H4] (LLi2), which was prepared in situ. The molecular structures of the complexes 1, 2, and 4 in their solid states were confirmed by single-crystal X-ray diffraction analysis. Of these complexes, only titanium complex 1 acts as an effective catalyst for the facile hydroboration of terminal alkynes, yielding exclusive E-isomers. The hydroboration of organic nitriles yielded diborylamines with a broad substrate scope, including broad functional group compatibility. The mechanism of hydroboration occurs through the formation of titanium hydride as an active species.
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2
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Nakanishi Y, Ishida Y, Kawaguchi H. Synthesis and structures of titanium complexes bearing tetradentate tripodal [O 2XC] ligands (X = C, P). Dalton Trans 2020; 49:27-30. [PMID: 31802083 DOI: 10.1039/c9dt03969d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and structures of titanium complexes supported by tripodal mixed-donor [O2CC] and [O2PC] ligands. Stepwise cyclometallation of a chelating bis(phenoxide) complex led to tetradentate binding of the [O2CC] ligand to the titanium center. Phosphination of a Ti-C bond of the [O2CC] complex afforded the tripodal [O2PC] ligand.
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Affiliation(s)
- Yusuke Nakanishi
- Department of Chemistry, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8551, Japan.
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del Águila-Sánchez MA, Navarro Y, García López J, Guedes GP, López Ortiz F. Synthesis of P-stereogenic diarylphosphinic amides by directed lithiation: transformation into tertiary phosphine oxides via methanolysis, aryne chemistry and complexation behaviour toward zinc(ii). Dalton Trans 2016; 45:2008-22. [DOI: 10.1039/c5dt02860d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general synthesis of P-stereogenic compoundsviaDoLi–electrophilic quenching of phosphinic amides and subsequent derivatizations is reported.
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Affiliation(s)
| | - Yolanda Navarro
- Área de Química Orgánica
- Universidad de Almería
- 04120 Almería
- Spain
| | | | - Guilherme P. Guedes
- Instituto de Ciências Exatas
- Departamento de Química
- Universidade Federal Rural do Rio de Janeiro
- 23870-000 Seropédica
- Brazil
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Anga S, Naktode K, Adimulam H, Panda TK. Titanium and zirconium complexes of the N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-butadiene ligand: syntheses, structures and uses in catalytic hydrosilylation reactions. Dalton Trans 2015; 43:14876-88. [PMID: 25177841 DOI: 10.1039/c4dt02013h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here a number of dianionic 1,4-diaza-1,3-butadiene complexes of titanium and zirconium synthesised by a salt metathesis reaction. The reaction of either CpTiCl3 or Cp2TiCl2 with the dilithium salt of N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene [; abbreviated (Dipp)2DADLi2] afforded the mono-cyclopentadienyl titanium complex [η(5)-CpTi((Dipp)2DAD)Cl] () bearing a dianionic ene-diamide ligand, while the analogous reaction of zirconocene dichloride (Cp2ZrCl2) with the dilithium salt gave the bis-cyclopentadienyl zirconium complex [Cp2Zr{(Dipp)2DAD}] (). The metal dichloride complexes [Ti((Dipp)2DAD)Cl2] () and [{(Dipp)2DADZrCl(μ-Cl)}2(κ(3)-Cl)(Li)(OEt2)2] () were obtained by the reaction of and anhydrous metal tetrachloride in a 1 : 1 molar ratio in diethyl ether at room temperature. Meanwhile, the homoleptic titanium complex [Ti{((Dipp)2DAD)}2] () was isolated in good yield by the treatment of with TiCl4 in a 1 : 2 molar ratio in diethyl ether. The complexes and were further reacted with neosilyl lithium to afford mono- and bis-alkyl complexes of titanium [η(5)-CpTi{(Dipp)2DAD}(CH2SiMe3)] () and zirconium [Zr{(Dipp)2DAD}(CH2SiMe3)2] () respectively. Molecular structures of the complexes , , and in the solid states were confirmed by single crystal X-ray diffraction analysis. The solid state structures of all the complexes reveal that the metal ions are chelated through the amido-nitrogen atoms and the olefinic carbons of the [(Dipp)2DAD](2-) moiety, satisfying the σ(2),π coordination mode. Compound was used as a catalyst for the intermolecular hydrosilylation reaction of a number of olefins, and moderate activity of catalyst was observed.
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Affiliation(s)
- Srinivas Anga
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram 502205, Telangana State, India.
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Syntheses and structures of dimeric sodium and potassium complexes of 2,6-diisopropyl-anilidophosphine borane ligand. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0782-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kottalanka RK, Harinath A, Panda TK. Chiral alkaline earth metal complexes with M–Se direct bond (M = Mg, Ca, Sr, Ba): syntheses, structures and ε-caprolactone polymerisation. RSC Adv 2015. [DOI: 10.1039/c5ra04495b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Synthesis and structural details of enantiomerically pure alkaline earth metal complexes (Mg, Ca, Sr, Ba) supported by chiral phosphinoselenoic amides are reported.
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Affiliation(s)
- Ravi K. Kottalanka
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Yeddumailaram 502205
- India
| | - Adimulam Harinath
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Yeddumailaram 502205
- India
| | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Yeddumailaram 502205
- India
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Kottalanka RK, Naktode K, Anga S, Panda TK. Synthesis and Structure of Potassium and Barium Complexes With Diphenylphosphinothioicamido Ligand Containing Ba-S Direct Bonds. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.818998] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ravi K. Kottalanka
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram, Andhra Pradesh, India
| | - Kishor Naktode
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram, Andhra Pradesh, India
| | - Srinivas Anga
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram, Andhra Pradesh, India
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram, Andhra Pradesh, India
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N- versus P-co-ordination for N–B and P–B bonded BH3 adducts for various phosphinamine ligands – An experimental and computational study. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kottalanka RK, Anga S, Naktode K, Laskar P, Nayek HP, Panda TK. Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies. Organometallics 2013. [DOI: 10.1021/om400121d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ravi K. Kottalanka
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Srinivas Anga
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Kishor Naktode
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Payel Laskar
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian School of Mines, Dhanbad 826004, Jharkhand, India
| | - Tarun K. Panda
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
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Dagorne S, Bellemin-Laponnaz S, Romain C. Neutral and Cationic N-Heterocyclic Carbene Zirconium and Hafnium Benzyl Complexes: Highly Regioselective Oligomerization of 1-Hexene with a Preference for Trimer Formation. Organometallics 2013. [DOI: 10.1021/om400182d] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Samuel Dagorne
- Institut de Chimie de Strasbourg, CNRS UMR 7177, Université de Strasbourg, 1 rue Blaise Pascal,
67000 Strasbourg, France
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie
des Matériaux de Strasbourg, CNRS UMR 7504, Université de Strasbourg, 23 rue du Loess, BP
43, F-67034 Strasbourg Cedex 2, France
| | - Charles Romain
- Institut de Chimie de Strasbourg, CNRS UMR 7177, Université de Strasbourg, 1 rue Blaise Pascal,
67000 Strasbourg, France
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Naktode K, Kottalanka RK, Jana SK, Panda TK. Synthesis and Crystal Structures of Sodium and Calcium Complexes with the LigandN-(2,6-Dimethylphenyl)diphenylphosphinic Amide. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Kottalanka RK, Naktode K, Panda TK. Synthesis and structural studies of dimeric sodium compounds having pentametallacyclooctane and hexametallacyclo undecane structure using different phosphinamine derivatives. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.09.077] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Rong Y, Al-Harbi A, Parkin G. Highly Variable Zr–CH2–Ph Bond Angles in Tetrabenzylzirconium: Analysis of Benzyl Ligand Coordination Modes. Organometallics 2012. [DOI: 10.1021/om300820b] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yi Rong
- Department
of Chemistry, Columbia University, New
York, New York 10027, United States
| | - Ahmed Al-Harbi
- Department
of Chemistry, Columbia University, New
York, New York 10027, United States
| | - Gerard Parkin
- Department
of Chemistry, Columbia University, New
York, New York 10027, United States
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Naktode K, Kottalanka RK, Panda TK. N-(2,6-Dimethylphenyl)diphenylphosphinamine chalcogenides (S, Se) and a zirconium complex possessing phosphanylamide in the coordination sphere. NEW J CHEM 2012. [DOI: 10.1039/c2nj40646b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Alkene Polymerization Catalysts Bearing Tridentate Phenoxyamine Ligands with sp3 C Donors. ChemCatChem 2009. [DOI: 10.1002/cctc.200900122] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Wang Y, Liu D, Chan HS, Xie Z. Synthesis, Structural Characterization, and Reactivity of Group 4 Metallacarboranes Containing the Ligand [Me2C(C5H4)(C2B9H10)]3−. Organometallics 2008. [DOI: 10.1021/om800235w] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yaorong Wang
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Dongmei Liu
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Hoi-Shan Chan
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Zuowei Xie
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
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Meyer N, Roesky PW, Bambirra S, Meetsma A, Hessen B, Saliu K, Takats J. Synthesis and Structures of Scandium and Lutetium Benzyl Complexes. Organometallics 2008. [DOI: 10.1021/om701171y] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nils Meyer
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Peter W. Roesky
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Sergio Bambirra
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Auke Meetsma
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Bart Hessen
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Kuburat Saliu
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Josef Takats
- Institut für Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany, Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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