1
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Crook PF, Lear AR, Das S, Brown MK. Cu/Pd-catalyzed arylboration of a 1-silyl-1,3-cyclohexadiene for stereocontrolled and diverse cyclohexane/ene synthesis. Chem Sci 2023; 14:10467-10470. [PMID: 37799986 PMCID: PMC10548526 DOI: 10.1039/d3sc02536e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/27/2023] [Indexed: 10/07/2023] Open
Abstract
The synthesis and Cu/Pd-catalyzed arylboration of 1-silyl-1,3-cyclohexadiene is described. This diene is significant as it allows for synthesis of polyfunctional cyclohexane/enes. To achieve high levels of diastereoselectivity, the use of a pyridylidene Cu-complex was employed. In addition, through the use of a chiral catalyst, an enantioselective reaction was possible. Due to the presence of the silyl and boron substituents, the products can be easily diversified into a range of valuable cyclohexane/ene products.
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Affiliation(s)
- Phillip F Crook
- Department of Chemistry, Indiana University 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Alan R Lear
- Department of Chemistry, Indiana University 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - Suman Das
- Department of Chemistry, Indiana University 800 E. Kirkwood Ave Bloomington IN 47405 USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University 800 E. Kirkwood Ave Bloomington IN 47405 USA
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2
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Frenette BL, Arsenault N, Walker SL, Decken A, Dyker CA. Bis(Iminophosphorano)-Substituted Pyridinium Ions and their Corresponding Bispyridinylidene Organic Electron Donors. Chemistry 2021; 27:8528-8536. [PMID: 33834560 DOI: 10.1002/chem.202100318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Indexed: 12/22/2022]
Abstract
Optimized synthetic procedures for pyridinium ions featuring iminophosphorano (-N=PR3 ; R=Ph, Cy) π-donor substituents in the 2- and 4- positions are described. Crystallographic and theoretical studies reveal that the strongly donating substituents severely polarize the π-electrons of the pyridyl ring at the expense of aromaticity. Moreover, the pyridinium ions are readily deprotonated to generate powerful bispyridinylidene (BPY) organic electron donors. Electrochemical studies show exceptionally low redox potentials for the two-electron BPY/BPY2+ couples, ranging from -1.71 V vs the saturated calomel electrode for 3PhPh (with four Ph3 P=N- groups) to -1.85 V for 3CyCy (with four Cy3 P=N- groups). These new compounds represent the most reducing neutral organic electron donors (OEDs) currently known. Some preliminary reductions involving 3CyCy showed enhanced capability owing to its low redox potential, such as the thermally activated reduction of an aryl chloride, but purification challenges were often encountered.
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Affiliation(s)
- Brandon L Frenette
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Nadine Arsenault
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Sarah L Walker
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Andreas Decken
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - C Adam Dyker
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
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3
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Synthesis of novel photoluminescent pyridinium-betaine-type molecules. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02591-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Huang Y, Brown MK. Synthesis of Bisheteroarylalkanes by Heteroarylboration: Development and Application of a Pyridylidene-Copper Complex. Angew Chem Int Ed Engl 2019; 58:6048-6052. [PMID: 30838739 PMCID: PMC6547830 DOI: 10.1002/anie.201902238] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Indexed: 12/15/2022]
Abstract
The development of pyridylidene-Cu-complexes and their application in Cu/Pd-catalyzed heteroarylboration of alkenylheteroarenes is reported. The significance of 1,1'-heteroarylalkanes as building blocks for drug discovery, as well as the straightforward and modular sequence to prepare the pyridylidene-Cu-complexes, makes this catalyst and it applications attractive for chemical synthesis. Furthermore, chiral variants of the pyridylidene-Cu-complexes have been prepared and utilized in the enantioselective arylboration of E-alkenes, further demonstrating the value and potential of this class of catalysts.
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Affiliation(s)
- Yuan Huang
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
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5
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Nakajima M, Miyamoto K, Hirano K, Uchiyama M. Diaryl-λ 3-chloranes: Versatile Synthesis and Unique Reactivity as Aryl Cation Equivalent. J Am Chem Soc 2019; 141:6499-6503. [PMID: 30969759 DOI: 10.1021/jacs.9b02436] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We have developed a versatile, high-yield synthesis of diarylchloroniums/λ3-chloranes through the reaction of various chloroarenes with readily prepared mesityldiazonium tetrakis(pentafluorophenyl)borate under mild conditions. The scope of the reaction is broad, including ArCl, ArBr, and ArI. The diarylchloroniums/λ3-chloranes prepared here show unique reactivity in various respects, enabling intermolecular electrophilic arylation reaction of weak nucleophiles, and chlorane-halogane exchange reaction.
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Affiliation(s)
- Misuzu Nakajima
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Keiichi Hirano
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan.,Cluster of Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN , 2-1 Hirosawa , Wako-shi , Saitama 351-0198 , Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University , Ueda , 386-8567 , Japan
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6
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Huang Y, Brown MK. Synthesis of Bisheteroarylalkanes by Heteroarylboration: Development and Application of a Pyridylidene–Copper Complex. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902238] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuan Huang
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - M. Kevin Brown
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47405 USA
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7
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Antoni PW, Hansmann MM. Pyrylenes: A New Class of Tunable, Redox-Switchable, Photoexcitable Pyrylium–Carbene Hybrids with Three Stable Redox-States. J Am Chem Soc 2018; 140:14823-14835. [DOI: 10.1021/jacs.8b08545] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Patrick W. Antoni
- Georg-August Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Max M. Hansmann
- Georg-August Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
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8
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Yin C, Zhong K, Li W, Yang X, Sun R, Zhang C, Zheng X, Yuan M, Li R, Lan Y, Fu H, Chen H. C6
-Selective Direct Arylation of 2-Phenylpyridine via
an Activated N
-methylpyridinium Salt: A Combined Experimental and Theoretical Study. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800666] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Changzhen Yin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Kangbao Zhong
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 People's Republic of China
| | - Wenjing Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Xiao Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Rui Sun
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Chunchun Zhang
- Analytical and Testing Center; Sichuan University; Chengdu 610064 People's Republic of China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 People's Republic of China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry; Sichuan University; Chengdu 610064 People's Republic of China
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9
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Vivancos Á, Segarra C, Albrecht M. Mesoionic and Related Less Heteroatom-Stabilized N-Heterocyclic Carbene Complexes: Synthesis, Catalysis, and Other Applications. Chem Rev 2018; 118:9493-9586. [PMID: 30014699 DOI: 10.1021/acs.chemrev.8b00148] [Citation(s) in RCA: 318] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mesoionic carbenes are a subclass of the family of N-heterocyclic carbenes that generally feature less heteroatom stabilization of the carbenic carbon and hence impart specific donor properties and reactivity schemes when coordinated to a transition metal. Therefore, mesoionic carbenes and their complexes have attracted considerable attention both from a fundamental point of view as well as for application in catalysis and beyond. As a follow-up of an earlier Chemical Reviews overview from 2009, the organometallic chemistry of N-heterocyclic carbenes with reduced heteroatom stabilization is compiled for the 2008-2017 period, including specifically the chemistry of complexes containing 1,2,3-triazolylidenes, 4-imidazolylidenes, and related 5-membered N-heterocyclic carbenes with reduced heteratom stabilization such as (is)oxazolylidenes, pyrrazolylidenes, and thiazolylidenes, as well as pyridylidenes as 6-membered N-heterocyclic carbenes with reduced heteroatom stabilization. For each ligand subclass, metalation strategies, electronic and steric properties, and applications, in particular, in metal-mediated catalysis, are compiled. Mesoionic carbenes demonstrate particularly high activity in (water) oxidation, hydrogen transfer reactions, and cyclization reactions. Unique features of these ligands are identified such as their dipolar structure, their specific donor properties, as well as stability aspects of the ligand and the complexes, which provides opportunities for further research.
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Affiliation(s)
- Ángela Vivancos
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland.,Departamento de Química Inorgánica , Universidad de Murcia , Apartado 4021 , 30071 Murcia , Spain
| | - Candela Segarra
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland.,Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas , Avenida de los Naranjos s/n , 46022 Valencia , Spain
| | - Martin Albrecht
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland
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10
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Zhang Y, Zhang J, Hong Q, Weng L, Zhou X. Reactivity of Homoleptic Dianionic β-Diketiminato-Supported Yttrium Complexes toward CS2: Construction of Neutral or Anionic Dihydropyridinethione. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yin Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Jie Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Qianquan Hong
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Linhong Weng
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Xigeng Zhou
- Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
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11
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Yoshidomi T, Fukushima T, Itami K, Segawa Y. Synthesis, Structure, and Electrochemical Property of a Bimetallic Bis-2-pyridylidene Palladium Acetate Complex. CHEM LETT 2017. [DOI: 10.1246/cl.170091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Tomohiro Fukushima
- Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602
- JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Nagoya, Aichi 464-8602
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602
- JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Nagoya, Aichi 464-8602
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Aichi 464-8602
| | - Yasutomo Segawa
- Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602
- JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Nagoya, Aichi 464-8602
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12
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Kirilchuk AA, Rozhenko AB, Leszczynski J. On structure and stability of pyrimidine ylidenes and their homologues. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.01.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Ge Q, Hu Y, Li B, Wang B. Synthesis of Conjugated Polycyclic Quinoliniums by Rhodium(III)-Catalyzed Multiple C–H Activation and Annulation of Arylpyridiniums with Alkynes. Org Lett 2016; 18:2483-6. [DOI: 10.1021/acs.orglett.6b01055] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Baiquan Wang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
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14
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Hata K, Ito H, Segawa Y, Itami K. Pyridylidene ligand facilitates gold-catalyzed oxidative C-H arylation of heterocycles. Beilstein J Org Chem 2015; 11:2737-46. [PMID: 26877796 PMCID: PMC4734412 DOI: 10.3762/bjoc.11.295] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 12/09/2015] [Indexed: 01/19/2023] Open
Abstract
Triaryl-2-pyridylidene effectively facilitates the gold-catalyzed oxidative C-H arylation of heteroarenes with arylsilanes as a unique electron-donating ligand on gold. The employment of the 2-pyridylidene ligand, which is one of the strongest electron-donating N-heterocyclic carbenes, resulted in the rate acceleration of the C-H arylation reaction of heterocycles over conventional ligands such as triphenylphosphine and a classical N-heterocyclic carbene. In situ observation and isolation of the 2-pyridylidene-gold(III) species, as well as a DFT study, indicated unusual stability of gold(III) species stabilized by strong electron donation from the 2-pyridylidene ligand. Thus, the gold(I)-to-gold(III) oxidation process is thought to be facilitated by the highly electron-donating 2-pyridylidene ligand.
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Affiliation(s)
- Kazuhiro Hata
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Hideto Ito
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan; JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan; JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan; Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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15
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Kovalev IS, Kopchuk DS, Zyryanov GV, Rusinov VL, Chupakhin ON, Charushin VN. Organolithium compounds in the nucleophilic substitution of hydrogen in arenes and hetarenes. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4462] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Wang L, Kong L, Li Y, Ganguly R, Kinjo R. Anti-Markovnikov hydroimination of terminal alkynes in gold-catalyzed pyridine construction from ammonia. Chem Commun (Camb) 2015; 51:12419-22. [PMID: 26144528 DOI: 10.1039/c5cc04091d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-catalyzed hydroimination of terminal alkynes, giving rise to anti-Markovnikov adducts concomitant with unstable Markovnikov adducts is described. The elementary step can be applied for the construction of pyridine derivatives from ammonia and alkynes.
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Affiliation(s)
- Liliang Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371, Singapore.
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17
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Auth J, Padevet J, Mauleón P, Pfaltz A. Pyridylidene-Mediated Dihydrogen Activation Coupled with Catalytic Imine Reduction. Angew Chem Int Ed Engl 2015; 54:9542-5. [PMID: 26119973 DOI: 10.1002/anie.201503233] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/01/2015] [Indexed: 11/06/2022]
Abstract
In recent years, dihydrogen activation at non-metallic centers has received increasing attention. A system in which dihydrogen is trapped by a pyridylidene intermediate that is generated from a pyridinium salt and a base is now reported. The dihydropyridine formed in this process can act as reducing agent towards organic electrophiles. By coupling the hydrogen-activation step with subsequent hydride transfer from the dihydropyridine to an imine, a catalytic process was established. Treatment of the N-phenylimine of phenyl trifluoromethyl ketone with 5-20 mol% of N-mesityl-3,5-bis(2,6-dimethylphenyl)pyridinium triflate and 0.3-1.0 equivalents of LiN(SiMe3)2 under 50 bar of hydrogen gas resulted in high conversion into the corresponding amine.
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Affiliation(s)
- Johanna Auth
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel (Switzerland)
| | - Jaroslav Padevet
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel (Switzerland)
| | - Pablo Mauleón
- Department of Organic Chemistry, Universidad Autónoma de Madrid c/Fco. Tomás y Valiente 7, Cantoblanco 28049, Madrid (Spain).
| | - Andreas Pfaltz
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel (Switzerland).
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18
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Auth J, Padevet J, Mauleón P, Pfaltz A. Pyridylidene-Mediated Dihydrogen Activation Coupled with Catalytic Imine Reduction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503233] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Juarez RA, Lee WT, Smith JM, Wang H. Computational evaluation of tris(carbene)borate donor properties in {NiNO}(10) complexes. Dalton Trans 2015; 43:14689-95. [PMID: 25142086 DOI: 10.1039/c4dt01426j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Electronic structure calculations are performed to characterise the structures, energies, and spectroscopic data for a series of four-coordinate tris(carbene)borate {NiNO}(10) complexes. There is excellent agreement between the computational and experimental results for known complexes, allowing for structure-function relationships to be delineated. Calculations that provide insights into the synthetic accessibility of nickel(iv) nitrides by oxygen atom abstraction from these complexes are also reported.
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Affiliation(s)
- Ruth A Juarez
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
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20
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Li Z, Huang X, Chen F, Zhang C, Wang X, Jiao N. Cu-Catalyzed Concise Synthesis of Pyridines and 2-(1H)-Pyridones from Acetaldehydes and Simple Nitrogen Donors. Org Lett 2015; 17:584-7. [DOI: 10.1021/ol5035996] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ziyuan Li
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Xiaoqiang Huang
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Feng Chen
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Chun Zhang
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Xiaoyang Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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21
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Cairns AG, Senn HM, Murphy MP, Hartley RC. Expanding the palette of phenanthridinium cations. Chemistry 2014; 20:3742-51. [PMID: 24677631 PMCID: PMC4164275 DOI: 10.1002/chem.201304241] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 01/03/2014] [Indexed: 01/01/2023]
Abstract
5,6-Disubstituted phenanthridinium cations have a range of redox, fluorescence and biological properties. Some properties rely on phenanthridiniums intercalating into DNA, but the use of these cations as exomarkers for the reactive oxygen species (ROS), superoxide, and as inhibitors of acetylcholine esterase (AChE) do not require intercalation. A versatile modular synthesis of 5,6-disubstituted phenanthridiniums that introduces diversity by Suzuki–Miyaura coupling, imine formation and microwave-assisted cyclisation is presented. Computational modelling at the density functional theory (DFT) level reveals that the novel displacement of the aryl halide by an acyclic N-alkylimine proceeds by an S(N)Ar mechanism rather than electrocyclisation. It is found that the displacement of halide is concerted and there is no stable Meisenheimer intermediate, provided the calculations consistently use a polarisable solvent model and a diffuse basis set.
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Affiliation(s)
- Andrew G Cairns
- WestCHEM School of Chemistry, University of GlasgowGlasgow, G12 8QQ (UK) E-mail:
| | - Hans Martin Senn
- WestCHEM School of Chemistry, University of GlasgowGlasgow, G12 8QQ (UK) E-mail:
| | - Michael P Murphy
- MRC Mitochondrial Biology Unit, Wellcome Trust/MRC BuildingCambridge, CB2 0XY (UK)
| | - Richard C Hartley
- WestCHEM School of Chemistry, University of GlasgowGlasgow, G12 8QQ (UK) E-mail:
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22
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Nawaz F, Mohanan K, Charles L, Rajzmann M, Bonne D, Chuzel O, Rodriguez J, Coquerel Y. Temporary Intramolecular Generation of Pyridine Carbenes in Metal‐Free Three‐Component CH Bond Functionalisation/Aryl‐Transfer Reactions. Chemistry 2013; 19:17578-83. [DOI: 10.1002/chem.201303359] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Faisal Nawaz
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
| | - Kishor Mohanan
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
| | - Laurence Charles
- Aix Marseille Université, CNRS, ICR UMR 7273, 13397 Marseille (France)
| | - Michel Rajzmann
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
| | - Damien Bonne
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
| | - Olivier Chuzel
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
| | - Jean Rodriguez
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
| | - Yoann Coquerel
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille (France)
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Bhunia A, Roy T, Pachfule P, Rajamohanan PR, Biju AT. Transition-Metal-Free Multicomponent Reactions Involving Arynes, N-Heterocycles, and Isatins. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304278] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Bhunia A, Roy T, Pachfule P, Rajamohanan PR, Biju AT. Transition-Metal-Free Multicomponent Reactions Involving Arynes, N-Heterocycles, and Isatins. Angew Chem Int Ed Engl 2013; 52:10040-3. [PMID: 23913808 DOI: 10.1002/anie.201304278] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 06/16/2013] [Indexed: 01/13/2023]
Affiliation(s)
- Anup Bhunia
- Organic Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune (India) http://academic.ncl.res.in/ncl_1/at.biju
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25
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Yoshidomi T, Segawa Y, Itami K. Pyridine-based dicarbene ligand: synthesis and structure of a bis-2-pyridylidene palladium complex. Chem Commun (Camb) 2013; 49:5648-50. [PMID: 23685618 DOI: 10.1039/c3cc42655f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We herein report the synthesis of a bis-2-pyridylidene palladium(II) complex as an isoelectronic structure of the well-known 2,2'-bipyridine complexes. One-pot or stepwise C-Cl oxidative addition followed by base-mediated C-H palladation of the chlorobipyridine dication to palladium(0) yielded the bis-2-pyridylidene palladium(II) carbonate smoothly.
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Affiliation(s)
- Tetsushi Yoshidomi
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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26
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Guo T, Dechert S, Meyer S, Meyer F. Convenient Synthetic Route to Palladium Complexes of Unconventional N-Heterocyclic Carbenes Derived from Pyridazine and Phthalazine. Organometallics 2012. [DOI: 10.1021/om300899r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tongxun Guo
- Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstrasse 4, 37077 Göttingen,
Germany
| | - Sebastian Dechert
- Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstrasse 4, 37077 Göttingen,
Germany
| | - Steffen Meyer
- Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstrasse 4, 37077 Göttingen,
Germany
| | - Franc Meyer
- Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstrasse 4, 37077 Göttingen,
Germany
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