1
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Zhong K, Liu S, He X, Ni H, Lai W, Gong W, Shan C, Zhao Z, Lan Y, Bai R. Oxidative cyclopalladation triggers the hydroalkylation of alkynes. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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2
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Adamovich V, Benítez M, Boudreault PL, Buil ML, Esteruelas MA, Oñate E, Tsai JY. Alkynyl Ligands as Building Blocks for the Preparation of Phosphorescent Iridium(III) Emitters: Alternative Synthetic Precursors and Procedures. Inorg Chem 2022; 61:9019-9033. [PMID: 35438993 PMCID: PMC9490848 DOI: 10.1021/acs.inorgchem.2c00197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Alkynyl ligands stabilize
dimers [Ir(μ-X)(3b)2]2 with a cis disposition
of the heterocycles of the 3b
ligands, in contrast to chloride. Thus, the complexes of this class—cis-[Ir(μ2-η2-C≡CPh){κ2-C,N-(C6H4-Isoqui)}2]2 (Isoqui = isoquinoline)
and cis-[Ir(μ2-η2-C≡CR){κ2-C,N-(MeC6H3-py)}2]2 (R =
Ph, tBu)—have been prepared in
high yields, starting from the dihydroxo-bridged dimers trans-[Ir(μ-OH){κ2-C,N-(C6H4-Isoqui)}2]2 and trans-[Ir(μ-OH){κ2-C,N-(MeC6H3-py)}2]2 and terminal alkynes. Subsequently, the acetylide ligands
have been employed as building blocks to prepare the orange and green
iridium(III) phosphorescent emitters, Ir{κ2-C,N-[C(CH2Ph)Npy]}{κ2-C,N-(C6H4-Isoqui)}2 and Ir{κ2-C,N-[C(CH2R)Npy]}{κ2-C,N-(MeC6H3-py)}2 (R = Ph, tBu), respectively,
with an octahedral structure of fac carbon and nitrogen
atoms. The green emitter Ir{κ2-C,N-[C(CH2tBu)Npy]}{κ2-C,N-(MeC6H3-py)}2 reaches 100% of quantum
yield in both the poly(methyl methacrylate) (PMMA) film and 2-MeTHF
at room temperature. In organic light-emitting diode (OLED) devices,
it demonstrates very saturated green emission at a peak wavelength
of 500 nm, with an external quantum efficiency (EQE) of over 12% or
luminous efficacy of 30.7 cd/A. Acetylide
ligands have been employed as building blocks
to prepare orange and green iridium(III) phosphorescent emitters,
with an octahedral structure of fac carbon and nitrogen
atoms. In OLED devices, the emitter Ir{κ2-C,N-[C(CH2tBu)Npy]}{κ2-C,N-(MeC6H3-py)}2 demonstrates
very saturated green emission at a peak wavelength of 500 nm, with
a luminous efficacy of 30.7 cd/A.
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Affiliation(s)
- Vadim Adamovich
- Universal Display Corporation, Ewing, New Jersey 08618, United States
| | - María Benítez
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza─CSIC, 50009 Zaragoza, Spain
| | | | - María L Buil
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza─CSIC, 50009 Zaragoza, Spain
| | - Miguel A Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza─CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza─CSIC, 50009 Zaragoza, Spain
| | - Jui-Yi Tsai
- Universal Display Corporation, Ewing, New Jersey 08618, United States
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3
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Zhu X, Wang Z, Zha L, Zhang Y, Qi Y, Yuan Q, Zhou S, Wang S. Synthesis and Characterization of N, N, C and N, N, O Tridentate β-Diketiminato Rare-Earth Metal Alkyl Complexes and Their Catalytic Performances on the Dimerization of Aldehydes or Terminal Alkynes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiancui Zhu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Ziqian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Ling Zha
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Yiwei Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Yawen Qi
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Qingbing Yuan
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Shuangliu Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
- Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Complexes for Materials Chemistry and Application, College of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
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4
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de las Heras L, Esteruelas MA, Oliván M, Oñate E. C-Cl Oxidative Addition and C-C Reductive Elimination Reactions in the Context of the Rhodium-Promoted Direct Arylation. Organometallics 2022; 41:716-732. [PMID: 35368715 PMCID: PMC8966374 DOI: 10.1021/acs.organomet.1c00643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Indexed: 01/09/2023]
Abstract
A cycle of stoichiometric elemental reactions defining the direct arylation promoted by a redox-pair Rh(I)-Rh(III) is reported. Starting from the rhodium(I)-aryl complex RhPh{κ3-P,O,P-[xant(PiPr2)2]} (xant(PiPr2)2 = 9,9-dimethyl-4,5-bis(diisopropylphosphino)xanthene), the reactions include C-Cl oxidative addition of organic chlorides, halide abstraction from the resulting six-coordinate rhodium(III) derivatives, C-C reductive coupling between the initial aryl ligand and the added organic group, oxidative addition of a C-H bond of a new arene, and deprotonation of the generated hydride-rhodium(III)-aryl species to form a new rhodium(I)-aryl derivative. In this context, the kinetics of the oxidative additions of 2-chloropyridine, chlorobenzene, benzyl chloride, and dichloromethane to RhPh{κ3-P,O,P-[xant(PiPr2)2]} and the C-C reductive eliminations of biphenyl and benzylbenzene from [RhPh2{κ3-P,O,P-[xant(PiPr2)2]}]BF4 and [RhPh(CH2Ph){κ3-P,O,P-[xant(PiPr2)2]}]BF4, respectively, have been studied. The oxidative additions generally involve the cis addition of the C-Cl bond of the organic chloride to the rhodium(I) complex, being kinetically controlled by the C-Cl bond dissociation energy; the weakest C-Cl bond is faster added. The C-C reductive elimination is kinetically governed by the dissociation energy of the formed bond. The C(sp3)-C(sp2) coupling to give benzylbenzene is faster than the C(sp2)-C(sp2) bond formation to afford biphenyl. In spite of that a most demanding orientation requirement is needed for the C(sp3)-C(sp2) coupling than for the C(sp2)-C(sp2) bond formation, the energetic effort for the pregeneration of the C(sp3)-C(sp2) bond is lower. As a result, the weakest C-C bond is formed faster.
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Affiliation(s)
- Laura
A. de las Heras
- Departamento de Química Inorgánica—Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH)—Centro de Innovación en Química Avanzada
(ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica—Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH)—Centro de Innovación en Química Avanzada
(ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de Química Inorgánica—Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH)—Centro de Innovación en Química Avanzada
(ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica—Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH)—Centro de Innovación en Química Avanzada
(ORFEO-CINQA), Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain
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5
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Liu S, Mao H, Qiao J, Zhang X, Lu Y, Gong X, Jia A, Gu L, Wu X, Zhao F. Temperature‐Controlled Divergent Synthesis of Tetrasubstituted Alkenes and Pyrrolo[1,2‐
a
]indole Derivatives via Iridium Catalysis. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Siyu Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University No. 2025, Chengluo Avenue Chengdu 610106 P. R. China
- Jinhua Branch Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 888 West Hai Tang Road Jinhua 321007 P. R. China
| | - Hui Mao
- College of Pharmacy Jinhua Polytechnic 888 West Hai Tang Road Jinhua 321007 P. R. China
| | - Jin Qiao
- Jinhua Branch Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 888 West Hai Tang Road Jinhua 321007 P. R. China
| | - Xiaoning Zhang
- Jinhua Branch Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 888 West Hai Tang Road Jinhua 321007 P. R. China
| | - Yangbin Lu
- Jinhua Branch Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 888 West Hai Tang Road Jinhua 321007 P. R. China
| | - Xin Gong
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University No. 2025, Chengluo Avenue Chengdu 610106 P. R. China
| | - Aiqiong Jia
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University No. 2025, Chengluo Avenue Chengdu 610106 P. R. China
| | - Linghui Gu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University No. 2025, Chengluo Avenue Chengdu 610106 P. R. China
| | - Xiaowei Wu
- Shanghai Institute of Materia Medica Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- Zhongshan Institute for Drug Discovery Shanghai Institute of Materia Medica Chinese Academy of Sciences Zhongshan 528400 P. R. China
| | - Fei Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University No. 2025, Chengluo Avenue Chengdu 610106 P. R. China
- Jinhua Branch Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 888 West Hai Tang Road Jinhua 321007 P. R. China
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6
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Han C, Tian X, Zhang H, Rominger F, Hashmi ASK. Tetrasubstituted 1,3-Enynes by Gold-Catalyzed Direct C(sp 2)-H Alkynylation of Acceptor-Substituted Enamines. Org Lett 2021; 23:4764-4768. [PMID: 34105968 DOI: 10.1021/acs.orglett.1c01486] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A gold-catalyzed synthesis of tetrasubstituted 1,3-enynes from hypervalent iodine(III) reagents and activated alkenes is reported. This reaction involves an in situ formed alkynyl Au(III) species and a subsequent direct C(sp2)-H functionalization of alkenes, offering 26 enynes in 62-92% yield with excellent functional group tolerance.
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Affiliation(s)
- Chunyu Han
- Organisch Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Xianhai Tian
- Organisch Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Huili Zhang
- Organisch Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - A Stephen K Hashmi
- Organisch Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.,Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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7
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Pfeffer C, Wannenmacher N, Frey W, Peters R. Stereo- and Regioselective Dimerization of Alkynes to Enynes by Bimetallic Syn-Carbopalladation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00473] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Camilla Pfeffer
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Nick Wannenmacher
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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8
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Huang Z, Wang Y, Leng X, Huang Z. An Amine-Assisted Ionic Monohydride Mechanism Enables Selective Alkyne cis-Semihydrogenation with Ethanol: From Elementary Steps to Catalysis. J Am Chem Soc 2021; 143:4824-4836. [DOI: 10.1021/jacs.1c01472] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhidao Huang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yulei Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zheng Huang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Chang-Kung Chuang Institute, East China Normal University, Shanghai 200062, China
- School of Chemistry and Material Sciences, Hangzhou Institute of Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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9
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Hood TM, Chaplin AB. Synthesis and reactivity of iridium complexes of a macrocyclic PNP pincer ligand. Dalton Trans 2021; 50:2472-2482. [PMID: 33511383 DOI: 10.1039/d0dt04303f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Having recently reported on the synthesis and rhodium complexes of the novel macrocyclic pincer ligand PNP-14, which is derived from lutidine and features terminal phosphine donors trans-substituted with a tetradecamethylene linker (Dalton Trans., 2020, 49, 2077-2086 and Dalton Trans., 2020, 49, 16649-16652), we herein describe our findings critically examining the chemistry of iridium homologues. The five-coordinate iridium(i) and iridium(iii) complexes [Ir(PNP-14)(η2:η2-cyclooctadiene)][BArF4] and [Ir(PNP-14)(2,2'-biphenyl)][BArF4] are readily prepared and shown to be effective precursors for the generation of iridium(iii) dihydride dihydrogen, iridium(i) bis(ethylene), and iridium(i) carbonyl derivatives that highlight important periodic trends by comparison to rhodium counterparts. Reaction of [Ir(PNP-14)H2(H2)][BArF4] with 3,3-dimethylbutene induced triple C-H bond activation of the methylene chain, yielding an iridium(iii) allyl hydride derivative [Ir(PNP-14*)H][BArF4], whilst catalytic homocoupling of 3,3-dimethylbutyne into Z-tBuC[triple bond, length as m-dash]CCHCHtBu could be promoted at RT by [Ir(PNP-14)(η2:η2-cyclooctadiene)][BArF4] (TOFinitial = 28 h-1). The mechanism of the latter is proposed to involve formation and direct reaction of a vinylidene derivative with HC[triple bond, length as m-dash]CtBu outside of the macrocyclic ring and this suggestion is supported experimentally by isolation and crystallographic characterisation of a catalyst deactivation product.
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Affiliation(s)
- Thomas M Hood
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
| | - Adrian B Chaplin
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
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10
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Storey CM, Gyton MR, Andrew RE, Chaplin AB. Terminal Alkyne Coupling Reactions Through a Ring: Effect of Ring Size on Rate and Regioselectivity. Chemistry 2020; 26:14715-14723. [PMID: 32677713 PMCID: PMC7756505 DOI: 10.1002/chem.202002962] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/15/2020] [Indexed: 01/11/2023]
Abstract
Terminal alkyne coupling reactions promoted by rhodium(I) complexes of macrocyclic NHC-based pincer ligands-which feature dodecamethylene, tetradecamethylene or hexadecamethylene wingtip linkers viz. [Rh(CNC-n)(C2 H4 )][BArF 4 ] (n=12, 14, 16; ArF =3,5-(CF3 )2 C6 H3 )-have been investigated, using the bulky alkynes HC≡CtBu and HC≡CAr' (Ar'=3,5-tBu2 C6 H3 ) as substrates. These stoichiometric reactions proceed with formation of rhodium(III) alkynyl alkenyl derivatives and produce rhodium(I) complexes of conjugated 1,3-enynes by C-C bond reductive elimination through the annulus of the ancillary ligand. The intermediates are formed with orthogonal regioselectivity, with E-alkenyl complexes derived from HC≡CtBu and gem-alkenyl complexes derived from HC≡CAr', and the reductive elimination step is appreciably affected by the ring size of the macrocycle. For the homocoupling of HC≡CtBu, E-tBuC≡CCH=CHtBu is produced via direct reductive elimination from the corresponding rhodium(III) alkynyl E-alkenyl derivatives with increasing efficacy as the ring is expanded. In contrast, direct reductive elimination of Ar'C≡CC(=CH2 )Ar' is encumbered relative to head-to-head coupling of HC≡CAr' and it is only with the largest macrocyclic ligand studied that the two processes are competitive. These results showcase how macrocyclic ligands can be used to interrogate the mechanism and tune the outcome of terminal alkyne coupling reactions, and are discussed with reference to catalytic reactions mediated by the acyclic homologue [Rh(CNC-Me)(C2 H4 )][BArF 4 ] and solvent effects.
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Affiliation(s)
- Caroline M. Storey
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
| | - Matthew R. Gyton
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
| | - Rhiann E. Andrew
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
| | - Adrian B. Chaplin
- Department of ChemistryUniversity of WarwickGibbet Hill RoadCoventryCV4 7ALUK
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11
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Galiana-Cameo M, Borraz M, Zelenkova Y, Passarelli V, Lahoz FJ, Pérez-Torrente JJ, Oro LA, Di Giuseppe A, Castarlenas R. Rhodium(I)-NHC Complexes Bearing Bidentate Bis-Heteroatomic Acidato Ligands as gem-Selective Catalysts for Alkyne Dimerization. Chemistry 2020; 26:9598-9608. [PMID: 32374897 DOI: 10.1002/chem.202001584] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/24/2020] [Indexed: 02/06/2023]
Abstract
A series of Rh(κ2 -BHetA)(η2 -coe)(IPr) complexes bearing 1,3-bis-hetereoatomic acidato ligands (BHetA) including carboxylato (O,O), thioacetato (O,S), amidato (O,N), thioamidato (N,S), and amidinato (N,N), have been prepared by reaction of the dinuclear precursor [Rh(μ-Cl)(IPr)(η2 -coe)]2 with the corresponding anionic BHetA species. The RhI -NHC-BHetA compounds catalyze the dimerization of aryl alkynes, showing excellent selectivity for the head-to-tail enynes. Among them, the acetanilidato-based catalyst has shown an outstanding catalytic performance reaching unprecedented TOF levels of 2500 h-1 with complete selectivity for the gem-isomer. Investigation of the reaction mechanism supports a non-oxidative pathway in which the BHetA ligand behaves as proton shuttle through intermediate κ1 -HBHetA species. However, in the presence of pyridine as additive, the identification of the common RhIII H(C≡CPh)2 (IPr)(py)2 intermediate gives support for an alternative oxidative route.
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Affiliation(s)
- María Galiana-Cameo
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Marina Borraz
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Yaroslava Zelenkova
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain.,Centro Universitario de la Defensa, Ctra Huesca S/N, 50090, Zaragoza, Spain
| | - Fernando J Lahoz
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Jesús J Pérez-Torrente
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Luis A Oro
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Andrea Di Giuseppe
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
| | - Ricardo Castarlenas
- Departamento de Química Inorgánica-Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP., 50009, Zaragoza, Spain
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12
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Foley BJ, Palit CM, Bhuvanesh N, Zhou J, Ozerov OV. Concerted aryl-sulfur reductive elimination from PNP pincer-supported Co(iii) and subsequent Co(i)/Co(iii) comproportionation. Chem Sci 2020; 11:6075-6084. [PMID: 32953010 PMCID: PMC7480512 DOI: 10.1039/d0sc01813a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 05/19/2020] [Indexed: 12/12/2022] Open
Abstract
This report discloses a combined experimental and computational study aimed at understanding C-S reductive elimination from Co(iii) supported by a diarylamido/bis(phosphine) PNP pincer ligand. Divalent (PNP)Co-aryl complexes could be easily oxidized to five-coordinate Co(iii) derivatives, and anion metathesis provided five-coordinate (PNP)Co(Ar)(SAr') complexes of Co(iii). In contrast to their previously described (POCOP)Co(Ar)(SAr') analogs, but similarly to the (PNP)Rh(Ar)(SAr') and (POCOP)Rh(Ar)(SAr') analogs, (PNP)Co(Ar)(SAr') undergo C-S reductive elimination with the formation of the desired diarylsulfide product ArSAr'. DFT studies and experimental observations are consistent with a concerted process. However, in contrast to the Rh analogs, the immediate product of such reductive elimination, the unobserved Co(i) complex (PNP)Co, un-dergoes rapid comproportionation with the (PNP)Co(Ar)(SAr') starting material to give Co(ii) compounds (PNP)Co-Ar and (PNP)Co-SAr'.
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Affiliation(s)
- Bryan J Foley
- Department of Chemistry , Texas A&M University , 3255 TAMU , College Station , Texas 77842 , USA .
| | - Chandra Mouli Palit
- Department of Chemistry , Texas A&M University , 3255 TAMU , College Station , Texas 77842 , USA .
| | - Nattamai Bhuvanesh
- Department of Chemistry , Texas A&M University , 3255 TAMU , College Station , Texas 77842 , USA .
| | - Jia Zhou
- School of Science , Harbin Institute of Technology , Shenzhen 518055 , China .
| | - Oleg V Ozerov
- Department of Chemistry , Texas A&M University , 3255 TAMU , College Station , Texas 77842 , USA .
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13
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Liu J, Yang J, Schneider C, Franke R, Jackstell R, Beller M. Tailored Palladium Catalysts for Selective Synthesis of Conjugated Enynes by Monocarbonylation of 1,3-Diynes. Angew Chem Int Ed Engl 2020; 59:9032-9040. [PMID: 32052900 PMCID: PMC7317973 DOI: 10.1002/anie.201915386] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Indexed: 12/15/2022]
Abstract
For the first time, the monoalkoxycarbonylation of easily available 1,3-diynes to give synthetically useful conjugated enynes has been realized. Key to success was the design and utilization of the new ligand 2,2'-bis(tert-butyl(pyridin-2-yl)phosphanyl)-1,1'-binaphthalene (Neolephos), which permits the palladium-catalyzed selective carbonylation under mild conditions, providing a general preparation of functionalized 1,3-enynes in good-to-high yields with excellent chemoselectivities. Synthetic applications that showcase the possibilities of this novel methodology include an efficient one-pot synthesis of 4-aryl-4H-pyrans as well as the rapid construction of various heterocyclic, bicyclic, and polycyclic compounds.
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Affiliation(s)
- Jiawang Liu
- Leibniz-Institut für KatalyseAlbert-Einstein-Straße 29a18059RostockGermany
| | - Ji Yang
- Leibniz-Institut für KatalyseAlbert-Einstein-Straße 29a18059RostockGermany
| | - Carolin Schneider
- Leibniz-Institut für KatalyseAlbert-Einstein-Straße 29a18059RostockGermany
| | - Robert Franke
- Evonik Performance Materials GmbHPaul-Baumann-Str. 145772MarlGermany
- Lehrstuhl für Theoretische ChemieRuhr-Universität Bochum44780BochumGermany
| | - Ralf Jackstell
- Leibniz-Institut für KatalyseAlbert-Einstein-Straße 29a18059RostockGermany
| | - Matthias Beller
- Leibniz-Institut für KatalyseAlbert-Einstein-Straße 29a18059RostockGermany
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14
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Liu J, Yang J, Schneider C, Franke R, Jackstell R, Beller M. Tailored Palladium Catalysts for Selective Synthesis of Conjugated Enynes by Monocarbonylation of 1,3‐Diynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jiawang Liu
- Leibniz-Institut für Katalyse Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ji Yang
- Leibniz-Institut für Katalyse Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Carolin Schneider
- Leibniz-Institut für Katalyse Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Robert Franke
- Evonik Performance Materials GmbH Paul-Baumann-Str. 1 45772 Marl Germany
- Lehrstuhl für Theoretische Chemie Ruhr-Universität Bochum 44780 Bochum Germany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse Albert-Einstein-Straße 29a 18059 Rostock Germany
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15
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Temkin ON. “Golden Age” of Homogeneous Catalysis Chemistry of Alkynes: Dimerization and Oligomerization of Alkynes. KINETICS AND CATALYSIS 2020. [DOI: 10.1134/s0023158419060120] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Hood TM, Chaplin AB. Reactions of Rh(PNP) pincer complexes with terminal alkynes: homocoupling through a ring or not at all. Dalton Trans 2020; 49:16649-16652. [DOI: 10.1039/d0dt03550e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
“Switching on” a metal's capacity to promote terminal alkyne coupling reactions using a macrocyclic pincer ligand.
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Affiliation(s)
- Thomas M. Hood
- Department of Chemistry
- University of Warwick
- Coventry CV4 7AL
- UK
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17
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Castro-Rodrigo R, Esteruelas MA, Gómez-Bautista D, Lezáun V, López AM, Oliván M, Oñate E. Influence of the Bite Angle of Dianionic C,N,C-Pincer Ligands on the Chemical and Photophysical Properties of Iridium(III) and Osmium(IV) Hydride Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00466] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ruth Castro-Rodrigo
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Daniel Gómez-Bautista
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Virginia Lezáun
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Ana M. López
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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18
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Zhang J, Liang Z, Wang J, Guo Z, Liu C, Xie M. Metal-Free Synthesis of Functionalized Tetrasubstituted Alkenes by Three-Component Reaction of Alkynes, Iodine, and Sodium Sulfinates. ACS OMEGA 2018; 3:18002-18015. [PMID: 31458390 PMCID: PMC6643681 DOI: 10.1021/acsomega.8b02966] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/03/2018] [Indexed: 05/15/2023]
Abstract
An operationally simple, efficient, and metal-/peroxide-free three-component reaction of alkynes, iodine, and sodium sulfinates has been developed for the construction of highly functionalized tetrasubstituted alkenes. Iodo- and sulfonyl-containing tetrasubstituted alkenes, such as vinyl ketones, allylic alcohols, and conjugated enynes, could be obtained regio- and stereoselectively in up to 96% yield.
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19
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Geer AM, Julián A, López JA, Ciriano MA, Tejel C. Pseudo-tetrahedral Rhodium and Iridium Complexes: Catalytic Synthesis of E-Enynes. Chemistry 2018; 24:17545-17556. [PMID: 30207408 DOI: 10.1002/chem.201803878] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 01/04/2023]
Abstract
The reactions of the rhodium(I) and iridium(I) complexes [M(PhBP3 )(C2 H4 )(NCMe)] (PhBP3 =PhB(CH2 PPh2 )3 - ) with alkynes have resulted in the synthesis of a new family of pseudo-tetrahedral complexes, [M(PhBP3 )(RC≡CR')] (M=Rh, Ir), which contain the alkyne as a four-electron donor. The reactions of these unusual compounds with two-electron donors (L=PMe3 , CNtBu) produced a change in the "donicity" of the alkyne from a 4e- to a 2e- donor to give five-coordinate complexes. These were the final products with the iridium complexes, whereas further reactions took place with the rhodium complexes. In particular, C(sp)-H bond activation of the alkyne occurred leading to hydrido alkynyl complexes. This process is essential for the further reactivity of the alkynes, and if the alkyne itself was used as reagent, E-enyne complexes were obtained. As a consequence of this chemistry, we show that the complex [Rh(PhBP3 )(C2 H4 )(NCMe)] is a very efficient pre-catalyst for the regioselective di- and trimerization of terminal alkynes to E-enynes and benzene derivatives, respectively. Interestingly, acetonitrile significantly enhanced the catalytic activity by facilitating the C(sp)-H bond activation step. A hydrometalation mechanism to account for these experimental observations is proposed.
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Affiliation(s)
- Ana M Geer
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Alejandro Julián
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - José A López
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Miguel A Ciriano
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Cristina Tejel
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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20
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Lekich TT, Gary JB, Bellows SM, Cundari TR, Guard LM, Heinekey DM. H 2 addition to ( Me4PCP)Ir(CO): studies of the isomerization mechanism. Dalton Trans 2018; 47:16119-16125. [PMID: 30377682 DOI: 10.1039/c8dt02861c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduced steric demand of the Me4PCP pincer ligand (PCP = κ3-C6H4-1,3-[CH2PR2]2, R = Me), allows for a more open metal center. This is evident through structure and reactivity comparisons between (Me4PCP)Ir derivatives and other (R4PCP)Ir complexes (R = tBu, iPr, CF3). In particular, isomerization from cis-(R4PCP)Ir(H)2(CO) to trans-(R4PCP)Ir(H)2(CO) is more facile when R = Me than when R = iPr. Deuterium incorporation in the hydride ligands from solvent C6D6 was observed during this isomerization when R = Me. This deuterium exchange has not been observed for other analogous R4PCP iridium complexes. A kinetic study of the cis/trans isomerization combined with computational studies suggests that the cis/trans isomerization proceeds through a migratory-insertion pathway involving a formyl intermediate.
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Affiliation(s)
- Travis T Lekich
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, USA
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21
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Hermosilla P, López P, García-Orduña P, Lahoz FJ, Polo V, Casado MA. Amido Complexes of Iridium with a PNP Pincer Ligand: Reactivity toward Alkynes and Hydroamination Catalysis. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Pablo Hermosilla
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Pablo López
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Pilar García-Orduña
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Fernando J. Lahoz
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Víctor Polo
- Departamento de Química Física and Instituto de Biocomputación y Física de los Sistemas Complejos (BIFI), Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Miguel A. Casado
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
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22
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Barwick-Silk J, Hardy S, Willis MC, Weller AS. Rh(DPEPhos)-Catalyzed Alkyne Hydroacylation Using β-Carbonyl-Substituted Aldehydes: Mechanistic Insight Leads to Low Catalyst Loadings that Enables Selective Catalysis on Gram-Scale. J Am Chem Soc 2018; 140:7347-7357. [PMID: 29763563 DOI: 10.1021/jacs.8b04086] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The detailed mechanism of the hydroacylation of β-amido-aldehyde, 2,2-dimethyl-3-morpholino-3-oxopropanal, with 1-octyne using [Rh( cis-κ2-P,P-DPEPhos)(acetone)2][BArF4]-based catalysts, is described [ArF = (CF3)2C6H3]. A rich mechanistic landscape of competing and interconnected hydroacylation and cyclotrimerization processes is revealed. An acyl-hydride complex, arising from oxidative addition of aldehyde, is the persistent resting state during hydroacylation, and quaternary substitution at the β-amido-aldehyde strongly disfavors decarbonylation. Initial rate, KIE, and labeling studies suggest that the migratory insertion is turnover-limiting as well as selectivity determining for linear/branched products. When the concentration of free aldehyde approaches zero at the later stages of catalysis alkyne cyclotrimerization becomes competitive, to form trisubstituted hexylarenes. At this point, the remaining acyl-hydride turns over in hydroacylation and the free alkyne is now effectively in excess, and the resting state moves to a metallacyclopentadiene and eventually to a dormant α-pyran-bound catalyst complex. Cyclotrimerization thus only becomes competitive when there is no aldehyde present in solution, and as aldehyde binds so strongly to form acyl-hydride when this happens will directly correlate to catalyst loading: with low loadings allowing for free aldehyde to be present for longer, and thus higher selectivites to be obtained. Reducing the catalyst loading from 20 mol % to 0.5 mol % thus leads to a selectivity increase from 96% to ∼100%. An optimized hydroacylation reaction is described that delivers gram scale of product, at essentially quantitative levels, using no excess of either reagent, at very low catalyst loadings, using minimal solvent, with virtually no workup.
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Affiliation(s)
- James Barwick-Silk
- Department of Chemistry, Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford OX1 4TA , U.K
| | - Simon Hardy
- Early Chemical Development , Pharmaceutical Sciences, IMED Biotech Unit, AstraZeneca , Macclesfield SK10 2NA , U.K
| | - Michael C Willis
- Department of Chemistry, Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford OX1 4TA , U.K
| | - Andrew S Weller
- Department of Chemistry, Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford OX1 4TA , U.K
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23
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Kumar A, Feller M, Ben-David Y, Diskin-Posner Y, Milstein D. Formal oxidative addition of a C–H bond by a 16e iridium(i) complex involves metal–ligand cooperation. Chem Commun (Camb) 2018; 54:5365-5368. [DOI: 10.1039/c8cc01885e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal–ligand cooperation through aromatization–dearomatization of the pyridine backbone enables the facile oxidative addition of a C–H bond by a 16e (PNP)Iridium(i) complex.
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Affiliation(s)
- Amit Kumar
- Department of Organic Chemistry
- Weizmann Institute of Science
- Rehovot
- Israel
| | - Moran Feller
- Department of Organic Chemistry
- Weizmann Institute of Science
- Rehovot
- Israel
| | - Yehoshoa Ben-David
- Department of Organic Chemistry
- Weizmann Institute of Science
- Rehovot
- Israel
| | | | - David Milstein
- Department of Organic Chemistry
- Weizmann Institute of Science
- Rehovot
- Israel
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24
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Wilklow-Marnell M, Brennessel WW, Jones WD. Unexpected Solvent Effects in the Isomerization of iPrPCPIr(η 2-PhC≡CPh) to a 1-Iridaindene. Isr J Chem 2017. [DOI: 10.1002/ijch.201700013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - William D. Jones
- Department of Chemistry; University of Rochester; Rochester NY 14627 USA
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25
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Johnson SA, Higgins RF, Abu-Omar MM, Shores MP, Bart SC. Mechanistic Insights into Concerted C–C Reductive Elimination from Homoleptic Uranium Alkyls. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00438] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sara A. Johnson
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Robert F. Higgins
- Department
of Chemistry, Colorado State University, Ft. Collins, Colorado 80523, United States
| | - Mahdi M. Abu-Omar
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Matthew P. Shores
- Department
of Chemistry, Colorado State University, Ft. Collins, Colorado 80523, United States
| | - Suzanne C. Bart
- H.C.
Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
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26
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Shaw PA, Clarkson GJ, Rourke JP. Reversible C-C bond formation at a triply cyclometallated platinum(iv) centre. Chem Sci 2017; 8:5547-5558. [PMID: 28970934 PMCID: PMC5618794 DOI: 10.1039/c7sc01361b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/05/2017] [Indexed: 11/21/2022] Open
Abstract
The oxidation of the tribenzylphosphine derivative of the doubly cylcometallated platinum(ii) complex of diphenylpyridine, 1, with PhICl2 led, as a first step, to the formation of a highly electrophilic metal centre which attacked the benzyl phosphine to give a triply cyclometallated species as the arenium ion. The highly acidic arenium ion protonated unreacted starting 1, a reaction that could be supressed by the addition of water, and gave the neutral species 2(t). Octahedral complex 2(t) was induced to reductively couple, with two five-membered rings coupling to give square planar complex 5 containing a nine-membered ring. The crystal structure of 5 showed the nine-membered ring to span trans across the square planar metal accompanied by considerable distortion: the P-Pt-N bond angle is 155.48(5)°. Oxidation of 5 with PhICl2 resulted in the addition of two chlorides and a change of the nine-membered ring ligand coordination to cis at an octahedral centre, still with considerable distortions: the P-Pt-N bond angle in the crystal structure of 6 is 99.46(5)°. Treatment of 2(t) with AgBF4 also induced a coupling to give a nine-membered ring, and the fluxional three coordinate complex 7. A mono-methylated version of 1, Me-1, was prepared and similar reactions were observed. The presence of the methyl group allowed us to observe selectivity in the coupling reaction to give the nine-membered ring, with two products (a-Me-7 and b-Me7) being initially formed in the ratio 7 : 1. The concentrations of two products changed with time giving a final ratio of 1 : 8 at room temperature (half-life 48 hours), the equilibration being made possible by a reversible C-C bond forming reaction. Reaction of complexes 7 with CO or hydrogen left the nine-membered ring intact, though oxidative degradation resulted in decomplexation of the phosphine donor, accompanied by formation of a P[double bond, length as m-dash]O group.
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Affiliation(s)
- Paul A Shaw
- Department of Chemistry , Warwick University , Coventry , UK CV4 7AL .
| | - Guy J Clarkson
- Department of Chemistry , Warwick University , Coventry , UK CV4 7AL .
| | - Jonathan P Rourke
- Department of Chemistry , Warwick University , Coventry , UK CV4 7AL .
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27
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Wilklow-Marnell M, Li B, Zhou T, Krogh-Jespersen K, Brennessel WW, Emge TJ, Goldman AS, Jones WD. Catalytic Dehydrogenative C–C Coupling by a Pincer-Ligated Iridium Complex. J Am Chem Soc 2017; 139:8977-8989. [DOI: 10.1021/jacs.7b03433] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miles Wilklow-Marnell
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bo Li
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Tian Zhou
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Karsten Krogh-Jespersen
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Thomas J. Emge
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Alan S. Goldman
- Department
of Chemistry, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - William D. Jones
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
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28
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Midya GC, Parasar B, Maiti S, Dash J. Bipyridine Facilitates Regioselective Dimerization of Alkynes in the Absence of Transition Metal. ChemistrySelect 2017. [DOI: 10.1002/slct.201701091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ganesh Chandra Midya
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
| | - Bibudha Parasar
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
| | - Subhadip Maiti
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
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29
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Esteruelas MA, Oñate E, Palacios AU. Selective Synthesis and Photophysical Properties of Phosphorescent Heteroleptic Iridium(III) Complexes with Two Different Bidentate Groups and Two Different Monodentate Ligands. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00108] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miguel A. Esteruelas
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Adrián U. Palacios
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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30
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Polukeev AV, Wendt OF. Cyclohexane-Based Phosphinite Iridium Pincer Complexes: Synthesis, Characterization, Carbene Formation, and Catalytic Activity in Dehydrogenation Reactions. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00846] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexey V. Polukeev
- Centre for Analysis and Synthesis,
Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | - Ola F. Wendt
- Centre for Analysis and Synthesis,
Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
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31
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Pike SD, Crimmin MR, Chaplin AB. Organometallic chemistry using partially fluorinated benzenes. Chem Commun (Camb) 2017; 53:3615-3633. [DOI: 10.1039/c6cc09575e] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorobenzenes, in particular fluorobenzene (FB) and 1,2-difluorobenzene (1,2-DiFB), are versatile solvents for conducting organometallic chemistry and transition-metal-based catalysis.
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Affiliation(s)
| | - Mark R. Crimmin
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
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32
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Kiyota S, Soeta H, Komine N, Komiya S, Hirano M. E-Selective dimerization of phenylacetylene catalyzed by cationic tris(μ-hydroxo)diruthenium(II) complex and the mechanistic insight: The role of two ruthenium centers in catalysis. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.08.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Sberegaeva AV, Watts D, Vedernikov AN. Oxidative Functionalization of Late Transition Metal–Carbon Bonds. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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34
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Hauser SA, Emerson-King J, Habershon S, Chaplin AB. UV-light promoted C–H bond activation of benzene and fluorobenzenes by an iridium(i) pincer complex. Chem Commun (Camb) 2017; 53:3634-3636. [DOI: 10.1039/c6cc09807j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
UV irradiation of [Ir(2,6-(PtBu2CH2)2C6H3)(CO)] generates the transient and reactive 14 VE Ir(i) fragment {Ir(2,6-(PtBu2CH2)2C6H3)}, which subsequently undergoes C–H bond activation of benzene and fluorobenzenes.
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Affiliation(s)
| | | | - Scott Habershon
- Department of Chemistry
- University of Warwick
- Coventry CV4 7AL
- UK
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35
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Ito JI, Ubukata S, Muraoka S, Nishiyama H. Enantioselective Direct Alkynylation of Ketones Catalyzed by Chiral CCN Pincer RhIIIComplexes. Chemistry 2016; 22:16801-16804. [DOI: 10.1002/chem.201603754] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Jun-ichi Ito
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University, Chikusa; Nagoya 46408603 Japan
| | - Shino Ubukata
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University, Chikusa; Nagoya 46408603 Japan
| | - Shun Muraoka
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University, Chikusa; Nagoya 46408603 Japan
| | - Hisao Nishiyama
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University, Chikusa; Nagoya 46408603 Japan
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36
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Theron R, Wu Y, Yunker LPE, Hesketh AV, Pernik I, Weller AS, McIndoe JS. Simultaneous Orthogonal Methods for the Real-Time Analysis of Catalytic Reactions. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01489] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robin Theron
- Department
of Chemistry, University of Victoria, P.O. Box 3065 Victoria, British Columbia V8W3 V6, Canada
| | - Yang Wu
- Department
of Chemistry, University of Victoria, P.O. Box 3065 Victoria, British Columbia V8W3 V6, Canada
| | - Lars P. E. Yunker
- Department
of Chemistry, University of Victoria, P.O. Box 3065 Victoria, British Columbia V8W3 V6, Canada
| | - Amelia V. Hesketh
- Department
of Chemistry, University of Victoria, P.O. Box 3065 Victoria, British Columbia V8W3 V6, Canada
| | - Indrek Pernik
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Andrew S. Weller
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - J. Scott McIndoe
- Department
of Chemistry, University of Victoria, P.O. Box 3065 Victoria, British Columbia V8W3 V6, Canada
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37
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Zhang Q, Yu HZ, Fu Y. Theoretical Study of Ir-Catalyzed Chemoselective C1–O Reduction of Glucose with Silane. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qi Zhang
- Hefei National Laboratory for Physical
Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant
Conversion, Anhui Province Key Laboratory of Biomass Clean Energy,
Department of Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Hai-Zhu Yu
- Department of Chemistry and Centre for Atomic Engineering
of Advanced Materials, Anhui University, Hefei 230601, People’s Republic of China
| | - Yao Fu
- Hefei National Laboratory for Physical
Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant
Conversion, Anhui Province Key Laboratory of Biomass Clean Energy,
Department of Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
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38
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Drover MW, Love JA, Schafer LL. Toward anti-Markovnikov 1-Alkyne O-Phosphoramidation: Exploiting Metal–Ligand Cooperativity in a 1,3-N,O-Chelated Cp*Ir(III) Complex. J Am Chem Soc 2016; 138:8396-9. [DOI: 10.1021/jacs.6b05143] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Marcus W. Drover
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Jennifer A. Love
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Laurel L. Schafer
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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39
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Laviska DA, Zhou T, Kumar A, Emge TJ, Krogh-Jespersen K, Goldman AS. Single and Double C–H Activation of Biphenyl or Phenanthrene. An Example of C–H Addition to Ir(III) More Facile than Addition to Ir(I). Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00055] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David A. Laviska
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Tian Zhou
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Akshai Kumar
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
- Department
of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Thomas J. Emge
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Karsten Krogh-Jespersen
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Alan S. Goldman
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, United States
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40
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41
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Zhou Y, Ye F, Zhou Q, Zhang Y, Wang J. Cu(I)-Catalyzed Tandem Reaction of Carbene Coupling and Horner–Wadsworth–Emmons Type Olefination: Access toward Enynes. Org Lett 2016; 18:2024-7. [DOI: 10.1021/acs.orglett.6b00631] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yujing Zhou
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Fei Ye
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Qi Zhou
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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42
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Zhou Y, Zhang Y, Wang J. Recent advances in transition-metal-catalyzed synthesis of conjugated enynes. Org Biomol Chem 2016; 14:6638-50. [DOI: 10.1039/c6ob00944a] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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43
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Titova EM, Silantyev GA, Filippov OA, Gulyaeva ES, Gutsul EI, Dolgushin FM, Belkova NV. PCP Pincer Iridium Chemistry – Coordination of Pyridines to [(
t
Bu
PCP)IrH(Cl)]. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501083] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ekaterina M. Titova
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Gleb A. Silantyev
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Oleg A. Filippov
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Ekaterina S. Gulyaeva
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Evgenii I. Gutsul
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Fedor M. Dolgushin
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
| | - Natalia V. Belkova
- Russian Academy of Sciences, A. N. Nesmeyanov Institute of Organoelement Compounds, Vavilov Str. 28, 119991 Moscow, Russia, http://mhlab.ru
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44
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Lee CI, DeMott JC, Pell CJ, Christopher A, Zhou J, Bhuvanesh N, Ozerov OV. Ligand survey results in identification of PNP pincer complexes of iridium as long-lived and chemoselective catalysts for dehydrogenative borylation of terminal alkynes. Chem Sci 2015; 6:6572-6582. [PMID: 30090274 PMCID: PMC6054099 DOI: 10.1039/c5sc02161h] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 08/03/2015] [Indexed: 11/21/2022] Open
Abstract
Following the report on the successful use of SiNN pincer complexes of iridium as catalysts for dehydrogenative borylation of terminal alkynes (DHBTA) to alkynylboronates, this work examined a wide variety of related pincer ligands in the supporting role in DHBTA. The ligand selection included both new and previously reported ligands and was developed to explore systematic changes to the SiNN framework (the 8-(2-diisopropylsilylphenyl)aminoquinoline). Surprisingly, only the diarylamido/bis(phosphine) PNP system showed any DHBTA reactivity. The specific PNP ligand (bearing two diisopropylphosphino side donors) used in the screen showed DHBTA activity inferior to SiNN. However, taking advantage of the ligand optimization opportunities presented by the PNP system via the changes in the substitution at phosphorus led to the discovery of a catalyst whose activity, longevity, and scope far exceeded that of the original SiNN archetype. Several Ir complexes were prepared in a model PNP system and evaluated as potential intermediates in the catalytic cycle. Among them, the (PNP)Ir diboryl complex and the borylvinylidene complex were shown to be less competent in catalysis and thus likely not part of the catalytic cycle.
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Affiliation(s)
- Chun-I Lee
- Department of Chemistry , Texas A&M University , College Station , TX 77842 , USA .
| | - Jessica C DeMott
- Department of Chemistry , Texas A&M University , College Station , TX 77842 , USA .
| | - Christopher J Pell
- Department of Chemistry , Texas A&M University , College Station , TX 77842 , USA .
| | - Alyson Christopher
- Department of Chemistry , Brandeis University , MS 015, 415 South Street , Waltham , MA 02454 , USA
| | - Jia Zhou
- Department of Chemistry , Harbin Institute of Technology , Harbin 150001 , China
| | - Nattamai Bhuvanesh
- Department of Chemistry , Texas A&M University , College Station , TX 77842 , USA .
| | - Oleg V Ozerov
- Department of Chemistry , Texas A&M University , College Station , TX 77842 , USA .
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45
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Mechanisms for the synthesis of conjugated enynes from diphenylacetylene and trimethylsilylacetylene catalyzed by a nickel(0) complex: DFT study of ligand-controlled selectivity. J Mol Model 2015; 21:135. [DOI: 10.1007/s00894-015-2672-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 03/31/2015] [Indexed: 10/23/2022]
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46
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Chung LW, Sameera WMC, Ramozzi R, Page AJ, Hatanaka M, Petrova GP, Harris TV, Li X, Ke Z, Liu F, Li HB, Ding L, Morokuma K. The ONIOM Method and Its Applications. Chem Rev 2015; 115:5678-796. [PMID: 25853797 DOI: 10.1021/cr5004419] [Citation(s) in RCA: 743] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Lung Wa Chung
- †Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - W M C Sameera
- ‡Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Takano Nishihiraki-cho, Sakyo, Kyoto 606-8103, Japan
| | - Romain Ramozzi
- ‡Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Takano Nishihiraki-cho, Sakyo, Kyoto 606-8103, Japan
| | - Alister J Page
- §Newcastle Institute for Energy and Resources, The University of Newcastle, Callaghan 2308, Australia
| | - Miho Hatanaka
- ‡Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Takano Nishihiraki-cho, Sakyo, Kyoto 606-8103, Japan
| | - Galina P Petrova
- ∥Faculty of Chemistry and Pharmacy, University of Sofia, Bulgaria Boulevard James Bourchier 1, 1164 Sofia, Bulgaria
| | - Travis V Harris
- ‡Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Takano Nishihiraki-cho, Sakyo, Kyoto 606-8103, Japan.,⊥Department of Chemistry, State University of New York at Oswego, Oswego, New York 13126, United States
| | - Xin Li
- #State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhuofeng Ke
- ∇School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Fengyi Liu
- ○Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Hai-Bei Li
- ■School of Ocean, Shandong University, Weihai 264209, China
| | - Lina Ding
- ▲School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Keiji Morokuma
- ‡Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Takano Nishihiraki-cho, Sakyo, Kyoto 606-8103, Japan
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47
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Ren P, Pike SD, Pernik I, Weller AS, Willis MC. Rh–POP Pincer Xantphos Complexes for C–S and C–H Activation. Implications for Carbothiolation Catalysis. Organometallics 2015. [DOI: 10.1021/om500984y] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Peng Ren
- Department of Chemistry,
Chemistry Research Laboratories, Mansfield Road, University of Oxford, Oxford, OX1 3TA, U.K
| | - Sebastian D. Pike
- Department of Chemistry,
Chemistry Research Laboratories, Mansfield Road, University of Oxford, Oxford, OX1 3TA, U.K
| | - Indrek Pernik
- Department of Chemistry,
Chemistry Research Laboratories, Mansfield Road, University of Oxford, Oxford, OX1 3TA, U.K
| | - Andrew S. Weller
- Department of Chemistry,
Chemistry Research Laboratories, Mansfield Road, University of Oxford, Oxford, OX1 3TA, U.K
| | - Michael C. Willis
- Department of Chemistry,
Chemistry Research Laboratories, Mansfield Road, University of Oxford, Oxford, OX1 3TA, U.K
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48
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Mader S, Molinari L, Rudolph M, Rominger F, Hashmi ASK. Dual Gold-Catalyzed Head-to-Tail Coupling of Iodoalkynes. Chemistry 2015; 21:3910-3. [DOI: 10.1002/chem.201406594] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Indexed: 11/07/2022]
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49
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Chen S, Su Y, Han K, Li X. Mechanistic studies on C–C reductive coupling of five-coordinate Rh(iii) complexes. Org Chem Front 2015. [DOI: 10.1039/c5qo00049a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C–C reductive coupling of rare five-coordinate rhodium(iii) complexes has been studied in detail.
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Affiliation(s)
- Shanshan Chen
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Department of Applied Chemistry
| | - Yan Su
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Keli Han
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xingwei Li
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Dalian Institute of Chemical Physics
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50
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Zhang H, Bao X. Computational insight into the mechanism of the Pd(0)–Brønsted acid cooperatively catalysed head-to-tail dimerization of terminal alkynes. RSC Adv 2015. [DOI: 10.1039/c5ra14086b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The Pd(0)–Brønsted acid cooperatively catalysed head-to-tail dimerization of terminal alkynes was computationally studied to gain a mechanistic insight.
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Affiliation(s)
- Hao Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Xiaoguang Bao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
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