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Mujahed S, Hey‐Hawkins E, Gelman D. A High‐Valent Ru‐PCP Pincer Catalyst for Hydrogenation of Carbonyl and Carboxyl Compounds under Molecular Hydrogen. Chemistry 2022; 28:e202201098. [DOI: 10.1002/chem.202201098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Shrouq Mujahed
- Institute of Chemistry Edmond J. Safra Campus The Hebrew University of Jerusalem Jerusalem 9190401 Israel
| | - Evamarie Hey‐Hawkins
- Faculty of Chemistry and Mineralogy Institute of Inorganic Chemistry Leipzig University Johannisallee 29 04103 Leipzig Germany
| | - Dmitri Gelman
- Institute of Chemistry Edmond J. Safra Campus The Hebrew University of Jerusalem Jerusalem 9190401 Israel
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Kisets I, Zabelinskaya S, Gelman D. Synthesis and Catalytic Properties of a Carbometalated Half-Sandwich Ru(II) Complex Bearing a Rigid Polyaromatic Tether. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ilya Kisets
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Sofiya Zabelinskaya
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Dmitri Gelman
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Radchenko Y, Mujahed S, Musa S, Gelman D. Synthesis and characterization of chiral enantiopure PC(sp)P pincer ligands and their complexes. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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De‐Botton S, Filippov DOA, Shubina ES, Belkova NV, Gelman D. Regioselective Isomerization of Terminal Alkenes Catalyzed by a PC(sp
3
)Pincer Complex with a Hemilabile Pendant Arm. ChemCatChem 2020. [DOI: 10.1002/cctc.202001308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sophie De‐Botton
- Institute of Chemistry, Edmond J. Safra Campus The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - D.Sc. Oleg A. Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Elena S. Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Natalia V. Belkova
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Dmitri Gelman
- Institute of Chemistry, Edmond J. Safra Campus The Hebrew University of Jerusalem Jerusalem 91904 Israel
- Peoples' Friendship University of Russia (RUDN University) Miklukho-Maklay St., 6 117198 Moscow Russia
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Kirkina VA, Silantyev GA, De-Botton S, Filippov OA, Titova EM, Pavlov AA, Belkova NV, Epstein LM, Gelman D, Shubina ES. Stereoisomerism as an Origin of Different Reactivities of Ir(III) PC(sp 3)P Pincer Catalysts. Inorg Chem 2020; 59:11962-11975. [PMID: 32806008 DOI: 10.1021/acs.inorgchem.0c00797] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two stereoisomers of pentacoordinate iridium(III) hydridochloride with triptycene-based PC(sp3)P pincer ligand (1,8-bis(diisopropylphosphino)triptycene), 1 and 2, differ by the orientation of hydride ligand relative to the bridgehead ring of triptycene. According to DFT/B3PW91/def2-TZVP calculations performed, an equatorial Cl ligand can relatively easily change its position in 1, whereas that is not the case in 2. Both complexes 1 and 2 readily bind the sixth ligand to protect the empty coordination site. Variable temperature spectroscopic (NMR, IR, and UV-visible) studies show the existence of two isomers of hexacoordinate complexes 1·MeCN, 2·MeCN, and 2·Py with acetonitrile or pyridine coordinated trans to hydride or trans to metalated C(sp3), whereas only the equatorial isomer is found for 1·Py. These complexes are stabilized by various intramolecular noncovalent C-H···Cl interactions that are affected by the rotation of isopropyls or pyridine. The substitution of MeCN by pyridine is slow yielding axial Py complexes as kinetic products and the equatorial Py complexes as thermodynamic products with faster reactions of 1·L. Ultimately, that explains the higher activity of 1 in the catalytic alkenes' isomerization observed for allylbenzene, 1-octene, and pent-4-enenitrile, which proceeds as an insertion/elimination sequence rather than through the allylic mechanism.
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Affiliation(s)
- Vladislava A Kirkina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Gleb A Silantyev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Sophie De-Botton
- Institute of Chemistry, The Hebrew University, Edmond Safra Campus, Givat Ram, 91904 Jerusalem, Israel
| | - Oleg A Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Ekaterina M Titova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Alexander A Pavlov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Natalia V Belkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Lina M Epstein
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Dmitri Gelman
- Institute of Chemistry, The Hebrew University, Edmond Safra Campus, Givat Ram, 91904 Jerusalem, Israel
| | - Elena S Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
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Willstätter‐Vorlesung: D. Gelman / Otto‐Roelen‐Medaille: F. Glorius / European Chemistry Gold Medal: M. Parrinello. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Willstaetter Lecture: D. Gelman / Roelen Award: F. Glorius / European Chemistry Gold Medal: M. Parrinello. Angew Chem Int Ed Engl 2020; 59:6651. [DOI: 10.1002/anie.202003373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Pilar Lamata M, Passarelli V, Carmona D. Recent Advances in Iridium-Catalysed Transfer Hydrogenation Reactions. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Dai Z, Tian Q, Li Y, Shang S, Luo W, Wang X, Li D, Zhang Y, Li Z, Yuan J. Michael Addition Reaction Catalyzed by Imidazolium Chloride to Protect Amino Groups and Construct Medium Ring Heterocycles. Molecules 2019; 24:E4224. [PMID: 31757097 PMCID: PMC6930643 DOI: 10.3390/molecules24234224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 11/17/2022] Open
Abstract
An effective approach for amino protection and construction of a seven-membered ring has been developed. The method uses imidazolium chloride to carry out the Michael addition reaction at low temperatures and perform amino deprotection or construction of a seven-membered ring at high temperatures.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Jianyong Yuan
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China; (Z.D.); (Q.T.); (Y.L.); (S.S.); (W.L.); (X.W.); (D.L.); (Y.Z.); (Z.L.)
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