1
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Patil N, Subramanian K, Bhanage BM. Ruthenium-catalyzed electrochemical C-H activation of benzamidine hydrochlorides with internal alkynes for the synthesis of 1-aminoisoquinolines. Org Biomol Chem 2024. [PMID: 39397596 DOI: 10.1039/d4ob01381f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2024]
Abstract
A constant current electrochemical approach for the synthesis of 1-aminoisoquinoline derivatives through the Ru(II)-catalyzed annulation of benzamidine hydrochlorides with alkynes is reported herein. This method produces good yields of naphthyridine-based compounds via Ru(II)-catalyzed C-H bond cleavage, leading to the formation of new C-C and C-N bonds in a one-pot manner. Notably, the synergy of electricity and Ru catalysis offers broad reaction compatibility, accommodating a wide range of substrates with diverse steric and electronic properties. Additionally, this method also eliminates the use of stoichiometric amounts of external chemical oxidants.
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Affiliation(s)
- Nilam Patil
- Department of Chemistry, Institute of Chemical Technology, Mumbai-400019, India.
| | - Kripa Subramanian
- Department of Chemistry, Institute of Chemical Technology, Mumbai-400019, India.
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2
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Bote IC, Krevlin ZA, Crespo MCF, Udomphan S, Levin CT, Lam CC, Glanzer AM, Hutchinson HL, Blades AM, McConnell DL, Lin C, Frank JP, Strutton WR, Merklin JC, Sinardo BA, Gueye KJ, Leiman KV, Thayaparan A, Adade JKA, Martinez NL, Kramer WW, Majireck MM. Bench-Stable 2-Halopyridinium Ketene Hemiaminals as Reagents for the Synthesis of 2-Aminopyridine Derivatives. Org Lett 2024. [PMID: 39303224 DOI: 10.1021/acs.orglett.4c02915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
2-Chloro-1-(1-ethoxyvinyl)pyridinium triflate and several other bench-stable N-(1-alkoxyvinyl) 2-halopyridinium triflates have been developed as reagents for the synthesis of valuable 2-aminopyridine scaffolds via unusually mild SNAr substitutions with amine nucleophiles. Advantages of this approach include an operationally simple mix-and-stir procedure at room temperature or mild heat and ambient atmosphere and without the need for transition metal catalysts, coupling reagents, or high-boiling solvents. The stable N-(1-ethoxyvinyl) moiety serves as a dual SNAr-activating group and pyridine N-protecting group that can be cleaved under thermal, acidic, or oxidative conditions. Preliminary results of other nucleophilic substitutions using oxygen-, sulfur-, and carbon-based nucleophiles are also demonstrated.
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Affiliation(s)
- Isabelle C Bote
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Zoe A Krevlin
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Maria Christina F Crespo
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Sudchananya Udomphan
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Carolyn T Levin
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Christie C Lam
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Amy M Glanzer
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Holly L Hutchinson
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Alisha M Blades
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Danielle L McConnell
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Crystal Lin
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - John P Frank
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - William R Strutton
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Jordan C Merklin
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Beau A Sinardo
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Khady J Gueye
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Karly V Leiman
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Ashley Thayaparan
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Joel K A Adade
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Nestor L Martinez
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Wesley W Kramer
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Max M Majireck
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
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3
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Arif M, Rauf A, Raza H, Moussa SB, Haroon SM, Alzahrani AYA, Akhter T. Catalytic reduction of nitroarenes by palladium nanoparticles decorated silica@poly(chitosan-N-isopropylacrylamide-methacrylic acid) hybrid microgels. Int J Biol Macromol 2024; 275:133633. [PMID: 38964695 DOI: 10.1016/j.ijbiomac.2024.133633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/28/2024] [Accepted: 07/01/2024] [Indexed: 07/06/2024]
Abstract
Conversion of toxic nitroarenes into less toxic aryl amines, which are the most suitable precursors for different types of compounds, is done with various materials which are costly or take more time for this conversion. In this regards, a silica@poly(chitosan-N-isopropylacrylamide-methacrylic acid) Si@P(CS-NIPAM-MAA) Si@P(CNM) core-shell microgel system was synthesized through free radical precipitation polymerization (FRPP) and then fabricated with palladium nanoparticles (Pd NPs) by in situ-reduction method to form Si@Pd-P(CNM) and characterized with XRD, TEM, FTIR, SEM, and EDX. The catalytic efficiency of Si@Pd-P(CNM) hybrid microgels was studied for reduction of 4-nitroaniline (4NiA) under diverse conditions. Different nitroarenes were successfully transformed into their corresponding aryl amines with high yields using the Si@Pd-P(CNM) system as catalyst and NaBH4 as reductant. The Si@Pd-P(CNM) catalyst exhibited remarkable catalytic efficiency and recyclability as well as maintaining its catalytic effectiveness over multiple cycles.
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Affiliation(s)
- Muhammad Arif
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan.
| | - Abdul Rauf
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan
| | - Hamid Raza
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan
| | - Sana Ben Moussa
- Department of Chemistry, Faculty of Science and Arts, Mohail Asser, King Khalid University, Abha 61413, Saudi Arabia
| | - Shah M Haroon
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan
| | | | - Toheed Akhter
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Republic of Korea.
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4
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Font P, Valdés H, Ribas X. Consolidation of the Oxidant-Free Au(I)/Au(III) Catalysis Enabled by the Hemilabile Ligand Strategy. Angew Chem Int Ed Engl 2024; 63:e202405824. [PMID: 38687322 DOI: 10.1002/anie.202405824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
In this minireview we survey the challenges and strategies in gold redox catalysis. Gold's reluctance to oxidative addition reactions due to its high redox potential limits its applicability. Initial attempts to overcome this problem focused on the use of sacrificial external oxidants in stoichiometric amounts to bring Au(I) compounds to Au(III) reactive species. Recently, innovative approaches focused on employing hemilabile ligands, which are capable of coordinating to Au(I) and stabilizing square-planar Au(III) intermediates, thus facilitating oxidative addition steps and enabling oxidant-free catalysis. Notable examples include the use of the (P^N) bidendate MeDalphos ligand to achieve various cross-coupling reactions via oxidative addition Au(I)/Au(III). Importantly, hemilabile ligand-enabled catalysis allows merging oxidative addition with π-activation, such as oxy- and aminoarylation of alkenols and alkenamines using organohalides, expanding gold's versatility in C-C and C-heteroatom bond formations and unprecedented cyclizations. Moreover, recent advancements in enantioselective catalysis using chiral hemilabile (P^N) ligands are also surveyed. Strikingly, versatile bidentate (C^N) hemilabile ligands as competitors of MeDalphos have appeared recently, by designing scaffolds where phosphine groups are substituted by N-heterocyclic or mesoionic carbenes. Overall, these approaches highlight the evolving landscape of gold redox catalysis and its tremendous potential in a broad scope of transformations.
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Affiliation(s)
- Pau Font
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain
| | - Hugo Valdés
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain
- Current address: Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, 28805, Alcalá de Henares, Madrid, Spain
| | - Xavi Ribas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, Girona, E-17003, Catalonia, Spain
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5
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Muratov K, Zaripov E, Berezovski MV, Gagosz F. DFT-Enabled Development of Hemilabile (P ∧N) Ligands for Gold(I/III) RedOx Catalysis: Application to the Thiotosylation of Aryl Iodides. J Am Chem Soc 2024; 146:3660-3674. [PMID: 38315643 DOI: 10.1021/jacs.3c08943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Ligand-enabled oxidative addition of Csp2-X bonds to Au(I) centers has recently appeared as a valuable strategy for the development of catalytic RedOx processes. Several cross-coupling reactions that were previously considered difficult to achieve were reported lately, thus expanding the synthetic potential of gold(I) complexes beyond the traditional nucleophilic functionalization of π-systems. MeDalPhos has played an important role in this development and, despite several studies on alternative structures, remains, so far, the only general ligand for such process. We report herein the discovery and DFT-enabled structural optimization of a new family of hemilabile (P∧N) ligands that can promote the oxidative addition of aryl iodides to gold(I). These flexible ligands, which possess a common 2-methylamino heteroaromatic N-donor motif, are structurally and electronically tunable, beyond being easily accessible and affordable. The corresponding Au(I) complexes were shown to outperform the reactivity of (MeDalPhos)Au(I) in a series of alkoxy- and amidoarylations of alkenes. Their synthetic potential and comparatively higher reactivity were further highlighted in the thiotosylation of aryl iodides, a challenging unreported C-S cross-coupling reaction that could not be achieved under classical Pd(0/II) catalysis and that allows for general and divergent access to aryl sulfur derivatives.
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Affiliation(s)
- Karim Muratov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Emil Zaripov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Maxim V Berezovski
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
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6
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Karak P, Sreelakshmi PA, Chakraborty B, Pal M, Khatua B, Lal Koner A, Choudhury J. Annulation-Induced Hidden Reactivity of the 1,2,4-Triazole Backbone. Angew Chem Int Ed Engl 2023; 62:e202310603. [PMID: 37610555 DOI: 10.1002/anie.202310603] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/18/2023] [Accepted: 08/23/2023] [Indexed: 08/24/2023]
Abstract
Triazoles are an important class of compounds with widespread applications. Functionalization of the triazole backbone is thus of significant interest. In comparison to 1,2,3-triazoles, C-H activation-functionalization of the congeners 1,2,4-triazoles is surprisingly underdeveloped. Indeed, no such C-H activation-functionalization has been reported for 4-substituted 1,2,4-triazole cores. Furthermore, although denitrogenative ring-opening of 1,2,3-triazoles is well-explored, 1,2,4-triazole/triazolium substrates have not been known to exhibit N-N bond-cleaving ring-opening reactivity so far. In this work, we unveiled an unusual hidden reactivity of the 1,2,4-triazole backbone involving the elusive N-N bond-cleaving ring-opening reaction. This new reactivity was induced by a Satoh-Miura-type C-H activation-annulation at the 1,2,4-triazole motif appended with a pyridine directing group. This unique reaction allowed ready access to a novel class of unsymmetrically substituted 2,2'-dipyridylamines, with one pyridine ring fully-substituted with alkyl groups. The unsymmetrical 2,2'-dipyridylamines were utilized to access unsymmetrical boron-aza-dipyridylmethene fluorescent dyes. Empowered with desirable optical/physical properties such as large Stokes shifts and suitable hydrophobicity arising from optimal alkyl chain length at the fully-substituted pyridine-ring, these dyes were used for intracellular lipid droplet-selective imaging studies, which provided useful information toward designing suitable lipid droplet-selective imaging probes for biomedical applications.
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Affiliation(s)
- Pirudhan Karak
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - P A Sreelakshmi
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Barsha Chakraborty
- Bionanotechnology Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Manisha Pal
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Bitasik Khatua
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Apurba Lal Koner
- Bionanotechnology Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
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7
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Wei C, Zhang L, Xia Z. Hemilabile P,N-Ligand-Assisted Gold-Catalyzed Heck Reaction of Aryl and Styryl Iodides with Styrenes. Org Lett 2023; 25:6808-6812. [PMID: 37690122 DOI: 10.1021/acs.orglett.3c02244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
A gold-catalyzed Heck reaction of aryl and styryl iodides with styrenes was developed. The hemilabile P,N-ligand-assisted gold-catalyzed C(sp2)-C(sp2) cross-coupling can synthesize stilbenes and bistyryl complexes, with good functional-group tolerance and mild conditions. The elementary organometallic steps of migratory insertion and β-hydride elimination might be involved in this ligand-enabled Au(I)/Au(III)-catalyzed Heck reaction with styrenes.
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Affiliation(s)
- Cunbo Wei
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Lizhu Zhang
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhonghua Xia
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
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8
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Rama RJ, Maya C, Molina F, Nova A, Nicasio MC. Important Role of NH-Carbazole in Aryl Amination Reactions Catalyzed by 2-Aminobiphenyl Palladacycles. ACS Catal 2023; 13:3934-3948. [PMID: 36970467 PMCID: PMC10029719 DOI: 10.1021/acscatal.3c00075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/25/2023] [Indexed: 03/09/2023]
Abstract
2-Aminobiphenyl palladacycles are among the most successful precatalysts for Pd-catalyzed cross-coupling reactions, including aryl amination. However, the role of NH-carbazole, a byproduct of precatalyst activation, remains poorly understood. Herein, the mechanism of the aryl amination reactions catalyzed by a cationic 2-aminobiphenyl palladacycle supported by a terphenyl phosphine ligand, PCyp2ArXyl2 (Cyp = cyclopentyl; ArXyl2 = 2,6-bis(2,6-dimethylphenyl)phenyl), P1, has been thoroughly investigated. Combining computational and experimental studies, we found that the Pd(II) oxidative addition intermediate reacts with NH-carbazole in the presence of the base (NaO t Bu) to yield a stable aryl carbazolyl Pd(II) complex. This species functions as the catalyst resting state, providing the amount of monoligated LPd(0) species required for catalysis and minimizing Pd decomposition. In the case of a reaction with aniline, an equilibrium between the carbazolyl complex and the on-cycle anilido analogue is established, which allows for a fast reaction at room temperature. In contrast, heating is required in a reaction with alkylamines, whose deprotonation involves coordination to the Pd center. A microkinetic model was built combining computational and experimental data to validate the mechanistic proposals. In conclusion, our study shows that despite the rate reduction observed in some reactions by the formation of the aryl carbazolyl Pd(II) complex, this species reduces catalyst decomposition and could be considered an alternative precatalyst in cross-coupling reactions.
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Affiliation(s)
- Raquel J. Rama
- Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain
- Department of Chemistry, Hylleraas Centre for Quantum Molecular Sciences and Centre for Materials Science and Nanotechnology, University of Oslo, N-0315 Oslo, Norway
| | - Celia Maya
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Francisco Molina
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química, Universidad de Huelva, 21071 Huelva, Spain
| | - Ainara Nova
- Department of Chemistry, Hylleraas Centre for Quantum Molecular Sciences and Centre for Materials Science and Nanotechnology, University of Oslo, N-0315 Oslo, Norway
| | - M. Carmen Nicasio
- Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain
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9
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Song G, Nong DZ, Li Q, Yan Y, Li G, Fan J, Zhang W, Cao R, Wang C, Xiao J, Xue D. Photochemical Synthesis of Anilines via Ni-Catalyzed Coupling of Aryl Halides with Ammonium Salts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Geyang Song
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Ding-Zhan Nong
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Qi Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Yonggang Yan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Gang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Juan Fan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
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10
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Xu G, Gao P, Colacot TJ. Tunable Unsymmetrical Ferrocene Ligands Bearing a Bulky Di-1-adamantylphosphino Motif for Many Kinds of C sp2–C sp3 Couplings. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00352] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Guolin Xu
- Research and Development, Life Science Chemistry, MilliporeSigma, 6000 N. Teutonia Avenue, Milwaukee, Wisconsin 53209, United States
| | - Peng Gao
- Research and Development, Life Science Chemistry, MilliporeSigma, 6000 N. Teutonia Avenue, Milwaukee, Wisconsin 53209, United States
| | - Thomas J. Colacot
- Research and Development, Life Science Chemistry, MilliporeSigma, 6000 N. Teutonia Avenue, Milwaukee, Wisconsin 53209, United States
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11
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Correia Bicho BA, Guthardt R, Bruhn C, Großhennig D, Orth T, Pfeiffer F, Siemeling U. N
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tert
‐Alkyl‐Substituted N‐Heterocyclic Carbenes with a 1,1’‐Ferrocenediyl Backbone. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bruno A. Correia Bicho
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - Robin Guthardt
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - Clemens Bruhn
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - David Großhennig
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - Till Orth
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - Florian Pfeiffer
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - Ulrich Siemeling
- Institute of Chemistry University of Kassel Heinrich-Plett-Straße 40 34132 Kassel Germany
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12
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Singh P, Singh AK. Palladium( ii) complexes of 2,2′-tellurobis( N, N-diphenyl acetamide): efficient catalysts for Suzuki–Miyaura coupling at room temperature under air. NEW J CHEM 2022. [DOI: 10.1039/d1nj03162g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three complexes, [Pd(L2)2Br2](C1), [(L2)PdCl(μ-Cl)2PdCl(L2)](C2), and [Pd(L2)PPh3Cl2](C3), where L2 = 2,2′-tellurobis(N,N-diphenylacetamide), catalyze Suzuki–Miyaura coupling (loading: 0.001 mol % of Pd) of eleven ArX at room temperature under air.
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Affiliation(s)
- Poornima Singh
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi-110016, India
| | - Ajai K. Singh
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi-110016, India
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13
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Zheng DZ, Xiong HG, Song AX, Yao HG, Xu C. Buchwald-Hartwig Amination of Aryl Esters and Chlorides catalyzed by Dianisole-decorated Pd-NHC complex. Org Biomol Chem 2022; 20:2096-2101. [DOI: 10.1039/d1ob02051j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modular and generic method for the Buchwald-Hartwig amination reactions of relatively unreactive aryl esters as acyl electrophiles and aryl chlorides as aryl electrophiles is developed, delivering efficient synthesis of...
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14
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Bächle F, Link A, Amgoune A, Tlili A. From Academia to the Market - Air-stable Ni( ii)/Josiphos Catalysts. Chimia (Aarau) 2021; 75:943-947. [PMID: 34798916 DOI: 10.2533/chimia.2021.943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The design, synthesis, commercialization and application of air-stable Ni(II)/Josiphos complexes has been realized in a collaboration between Solvias and ICBMS (University Lyon 1). The Ni-complexes are utilized as versatile precatalysts for diverse cross-coupling reactions. Apart from being active in established C-C and C-N couplings at low catalyst loadings, the novel Ni-precatalysts enabled the development of the challenging monoarylation of ammonia, ammonia surrogates and even alkylammonium chlorides with aryl carbamates. Finally, the α-arylation of acetone with aryl chlorides, carbamates and pivalates was demonstrated using the Ni(II)/Josiphos precatalysts.
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Affiliation(s)
- Florian Bächle
- Solvias AG, Römerpark 2, CH-4303 Kaiseraugst, Switzerland
| | - Achim Link
- Solvias AG, Römerpark 2, CH-4303 Kaiseraugst, Switzerland;,
| | - Abderrahmane Amgoune
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, Université Lyon 1, CNRS, CPE-Lyon, INSA, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, Université Lyon 1, CNRS, CPE-Lyon, INSA, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France;,
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15
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Erb W, Carré V, Roisnel T. HFIP‐Promoted Substitution in the Ferrocene Series: Smooth Approach towards Original Catalysts**. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- William Erb
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Victor Carré
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 35000 Rennes France
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16
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Tran RQ, Dinh LP, Jacoby SA, Harris NW, Swann WA, Williamson SN, Semsey RY, Yet L. Synthesis of 3-aryl-1-phosphinoimidazo[1,5- a]pyridine ligands for use in Suzuki-Miyaura cross-coupling reactions. RSC Adv 2021; 11:28347-28351. [PMID: 35480780 PMCID: PMC9037988 DOI: 10.1039/d1ra05417a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 08/04/2021] [Indexed: 12/17/2022] Open
Abstract
3-Aryl-1-phosphinoimidazo[1,5-a]pyridine ligands were synthesized from 2-aminomethylpyridine as the initial substrate via two complementary routes. The first synthetic pathway underwent the coupling of 2-aminomethylpyridine with substituted benzoyl chlorides, followed by cyclization, iodination and palladium-catalyzed cross-coupling phosphination reactions sequence to give our phosphorus ligands. In the second route, 2-aminomethylpyridine was cyclized with aryl aldehydes, followed by the iodination and palladium-catalyzed cross-coupling phosphination reactions to yield our phosphorus ligands. The 3-aryl-1-phosphinoimidazo[1,5-a]pyridine ligands were evaluated in palladium-catalyzed sterically-hindered biaryl and heterobiaryl Suzuki-Miyaura cross-coupling reactions.
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Affiliation(s)
- Ryan Q Tran
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
| | - Long P Dinh
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
| | - Seth A Jacoby
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
| | - Nekoda W Harris
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
| | - William A Swann
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
| | | | - Rebecca Y Semsey
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
| | - Larry Yet
- Department of Chemistry, University of South Alabama Mobile AL 36688 USA
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17
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Wong SM, Choy PY, Zhao Q, Yuen OY, Yeung CC, So CM, Kwong FY. Design of Benzimidazolyl Phosphines Bearing Alterable P, O or P, N-Coordination: Synthesis, Characterization, and Insights into Their Reactivity. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shun Man Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Pui Ying Choy
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Qingyang Zhao
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - On Ying Yuen
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Chung Chiu Yeung
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Chau Ming So
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Fuk Yee Kwong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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18
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Chernyshev VM, Khazipov OV, Eremin DB, Denisova EA, Ananikov VP. Formation and stabilization of nanosized Pd particles in catalytic systems: Ionic nitrogen compounds as catalytic promoters and stabilizers of nanoparticles. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213860] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Daili F, Sengmany S, Léonel E. Amination of Aryl Halides Mediated by Electrogenerated Nickel from Sacrificial Anode. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Farah Daili
- Electrosynthèse Catalyse et Chimie Organique Université Paris-Est Créteil, CNRS, ICMPE, UMR 7182 2 rue Henri Dunant 94320 Thiais France
| | - Stéphane Sengmany
- Electrosynthèse Catalyse et Chimie Organique Université Paris-Est Créteil, CNRS, ICMPE, UMR 7182 2 rue Henri Dunant 94320 Thiais France
| | - Eric Léonel
- Electrosynthèse Catalyse et Chimie Organique Université Paris-Est Créteil, CNRS, ICMPE, UMR 7182 2 rue Henri Dunant 94320 Thiais France
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20
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Huang J, Isaac M, Watt R, Becica J, Dennis E, Saidaminov MI, Sabbers WA, Leitch DC. DMPDAB–Pd–MAH: A Versatile Pd(0) Source for Precatalyst Formation, Reaction Screening, and Preparative-Scale Synthesis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00288] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jingjun Huang
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Matthew Isaac
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Ryan Watt
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Joseph Becica
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Emma Dennis
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Makhsud I. Saidaminov
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - William A. Sabbers
- Department of Chemistry, Temple University, 1901 N. Broad Street, Philadelphia, Pennsylvania 19122, United States
| | - David C. Leitch
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
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21
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Stauber JM, Rheingold AL, Spokoyny AM. Gold(III) Aryl Complexes as Reagents for Constructing Hybrid Peptide-Based Assemblies via Cysteine S-Arylation. Inorg Chem 2021; 60:5054-5062. [PMID: 33739101 PMCID: PMC8078169 DOI: 10.1021/acs.inorgchem.1c00087] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Organometallic complexes have recently gained attention as competent bioconjugation reagents capable of introducing a diverse array of substrates to biomolecule substrates. Here, we detail the synthesis and characterization of an aminophosphine-supported Au(III) platform that provides rapid and convenient access to a wide array of peptide-based assemblies via cysteine S-arylation. This strategy results in the formation of robust C-S covalent linkages and is an attractive method for the modification of complex biomolecules due to the high functional group tolerance, chemoselectivity, and rapid reaction kinetics associated with these arylation reactions. This work expands upon existing metal-mediated cysteine arylation by introducing a class of air-stable organometallic complexes that serve as robust bioconjugation reagents enabling the synthesis of conjugates of higher structural complexity including macrocyclic stapled and bicyclic peptides as well as a peptide-functionalized multivalent hybrid nanocluster. This organometallic-based approach provides a convenient, one-step method of peptide functionalization and macrocyclization, and has the potential to contribute to efforts directed toward developing efficient synthetic strategies of building new and diverse hybrid peptide-based assemblies.
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Affiliation(s)
- Julia M. Stauber
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92092
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92092
| | - Alexander M. Spokoyny
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095
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22
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Lau SH, Yu P, Chen L, Madsen-Duggan CB, Williams MJ, Carrow BP. Aryl Amination Using Soluble Weak Base Enabled by a Water-Assisted Mechanism. J Am Chem Soc 2020; 142:20030-20039. [PMID: 33179489 DOI: 10.1021/jacs.0c09275] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The amination of aryl halides has become one of the most commonly practiced C-N bond-forming reactions in pharmaceutical and laboratory syntheses. The widespread use of strong or poorly soluble inorganic bases for amine activation nevertheless complicates the compatibility of this important reaction class with sensitive substrates as well as applications in flow and automated synthesis, to name a few. We report a palladium-catalyzed C-N coupling using Et3N as a weak, soluble base, which allows a broad substrate scope that includes bromo- and chloro(hetero)arenes, primary anilines, secondary amines, and amide type nucleophiles together with tolerance for a range of base-sensitive functional groups. Mechanistic data have established a unique pathway for these reactions in which water serves multiple beneficial roles. In particular, ionization of a neutral catalytic intermediate via halide displacement by H2O generates, after proton loss, a coordinatively unsaturated Pd-OH species that can bind amine substrate triggering intramolecular N-H heterolysis. This water-assisted pathway operates efficiently with even weak terminal bases, such as Et3N. The use of a simple, commercially available ligand, PAd3, is key to this water-assisted mechanism by promoting coordinative unsaturation in catalytic intermediates responsible for the heterolytic activation of strong element-hydrogen bonds, which enables broad compatibility of carbon-heteroatom cross-coupling reactions with sensitive substrates and functionality.
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Affiliation(s)
- Sii Hong Lau
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Peng Yu
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Liye Chen
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Christina B Madsen-Duggan
- Chemical Process Development, Bristol Myers Squibb, 556 Morris Avenue, Summit, New Jersey 07902, United States
| | - Michael J Williams
- Chemical Process Development, Bristol Myers Squibb, 556 Morris Avenue, Summit, New Jersey 07902, United States
| | - Brad P Carrow
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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23
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Rodstein I, Prendes DS, Wickert L, Paaßen M, Gessner VH. Selective Pd-Catalyzed Monoarylation of Small Primary Alkyl Amines through Backbone-Modification in Ylide-Functionalized Phosphines (YPhos). J Org Chem 2020; 85:14674-14683. [PMID: 32907331 PMCID: PMC7684579 DOI: 10.1021/acs.joc.0c01771] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
![]()
Ylide-substituted phosphines have
been shown to be excellent ligands
for C–N coupling reactions under mild reaction conditions.
Here we report studies on the impact of the steric demand of the substituent
in the ylide-backbone on the catalytic activity. Two new YPhos ligands
with bulky ortho-tolyl (pinkYPhos) and mesityl (mesYPhos)
substituents were synthesized, which are slightly more sterically
demanding than their phenyl analogue but considerably less flexible.
This change in the ligand design leads to higher selectivities and
yields in the arylation of small primary amines compared to previously
reported YPhos ligands. Even MeNH2 and EtNH2 could be coupled at room temperature with a series of aryl chlorides
in high yields.
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Affiliation(s)
- Ilja Rodstein
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Daniel Sowa Prendes
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Leon Wickert
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Maurice Paaßen
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Viktoria H Gessner
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
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24
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Johnson C, Dabral S, Rudolf P, Licht U, Hashmi ASK, Schaub T. Liquid‐liquid‐phase Synthesis of
exo
‐Vinylene Carbonates from Primary Propargylic Alcohols: Catalyst Design and Recycling. ChemCatChem 2020. [DOI: 10.1002/cctc.202001551] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chloë Johnson
- Catalysis Research Laboratory (CaRLa) Im Neuenheimer Feld 584 69120 Heidelberg Germany
| | - Saumya Dabral
- Catalysis Research Laboratory (CaRLa) Im Neuenheimer Feld 584 69120 Heidelberg Germany
| | - Peter Rudolf
- BASF SE Carl-Bosch-Str.38 67056 Ludwigshafen Germany
| | - Ulrike Licht
- BASF SE Carl-Bosch-Str.38 67056 Ludwigshafen Germany
| | - A. Stephen K. Hashmi
- Catalysis Research Laboratory (CaRLa) Im Neuenheimer Feld 584 69120 Heidelberg Germany
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Thomas Schaub
- Catalysis Research Laboratory (CaRLa) Im Neuenheimer Feld 584 69120 Heidelberg Germany
- BASF SE Carl-Bosch-Str.38 67056 Ludwigshafen Germany
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25
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Abstract
Three- and four-membered rings, widespread motifs in nature and medicinal chemistry, have fascinated chemists ever since their discovery. However, due to energetic considerations, small rings are often difficult to assemble. In this regard, homogeneous gold catalysis has emerged as a powerful tool to construct these highly strained carbocycles. This review aims to provide a comprehensive summary of all the major advances and discoveries made in the gold-catalyzed synthesis of cyclopropanes, cyclopropenes, cyclobutanes, cyclobutenes, and their corresponding heterocyclic or heterosubstituted analogs.
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Affiliation(s)
- Mauro Mato
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Cristina Garcı A-Morales
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
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26
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Liu W, Xu J, Chen X, Zhang F, Xu Z, Wang D, He Y, Xia X, Zhang X, Liang Y. CuI/2-Aminopyridine 1-Oxide Catalyzed Amination of Aryl Chlorides with Aliphatic Amines. Org Lett 2020; 22:7486-7490. [DOI: 10.1021/acs.orglett.0c02672] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wenjie Liu
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Jiamin Xu
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Xiahong Chen
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Fuxing Zhang
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Zhifeng Xu
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Deping Wang
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Yongqiang He
- College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Xiaohong Xia
- College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Xin Zhang
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Yun Liang
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
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27
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Sanzhiev AN, Potapova MI, Krasnokutskaya EA, Filimonov VD. A Novel One-Pot Synthesis of N,N-Dimethylaminopyridines by Diazotization of Aminopyridines in Dimethylformamide in the Presence of Trifluoromethanesulfonic Acid. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020060093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Taeufer T, Pospech J. Palladium-Catalyzed Synthesis of N,N-Dimethylanilines via Buchwald–Hartwig Amination of (Hetero)aryl Triflates. J Org Chem 2020; 85:7097-7111. [DOI: 10.1021/acs.joc.0c00491] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tobias Taeufer
- Leibniz Institute for Catalysis at Rostock University, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Jola Pospech
- Leibniz Institute for Catalysis at Rostock University, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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29
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Wang J, Li YH, Pan SC, Li MF, Du W, Yin H, Li JH. Efficient Phosphorus-Free Chlorination of Hydroxy Aza-Arenes and Their Application in One-Pot Pharmaceutical Synthesis. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.9b00407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
- School of Pharmacy, Hangzhou Medical College, Hangzhou 310053, P. R. China
| | - Yan-Hui Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Song-Cheng Pan
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Ming-Fang Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Wenting Du
- School of Pharmacy, Hangzhou Medical College, Hangzhou 310053, P. R. China
| | - Hong Yin
- School of Pharmacy, Hangzhou Medical College, Hangzhou 310053, P. R. China
| | - Jing-Hua Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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30
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Rama RJ, Maya C, Nicasio MC. Dialkylterphenyl Phosphine-Based Palladium Precatalysts for Efficient Aryl Amination of N-Nucleophiles. Chemistry 2020; 26:1064-1073. [PMID: 31743505 DOI: 10.1002/chem.201903279] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Indexed: 01/21/2023]
Abstract
A series of 2-aminobiphenyl palladacycles supported by dialkylterphenyl phosphines, PR2 Ar' (R=Me, Et, iPr, Cyp (cyclopentyl), Ar'=ArDipp2 , ArXyl2f , Dipp (2,6-C6H3-(2,6-C6H3-(CHMe2)2)2), Xyl=xylyl) have been prepared and structurally characterized. Neutral palladacycles were obtained with less bulky terphenyl phosphines (i.e., Me and Et substituents) whereas the largest phosphines provided cationic palladacycles in which the phosphines adopted a bidentate hemilabile k1 -P,η1 -Carene coordination mode. The influence of the ligand structure on the catalytic performance of these Pd precatalysts was evaluated in aryl amination reactions. Cationic complexes bearing the phosphines PiPr2 ArXyl2 and PCyp2 ArXyl2 were the most active of the series. These precatalysts have demonstrated a high versatility and efficiency in the coupling of a variety of nitrogen nucleophiles, including secondary amines, alkyl amines, anilines, and indoles, with electronically deactivated and ortho-substituted aryl chlorides at low catalyst loadings (0.25-0.75 mol % Pd) and without excess ligand.
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Affiliation(s)
- Raquel J Rama
- Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo 1203, 41071, Sevilla, Spain
| | - Celia Maya
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, Universidad de Sevilla, Avda. Américo Vespucio 49, 41092, Sevilla, Spain
| | - M Carmen Nicasio
- Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo 1203, 41071, Sevilla, Spain
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31
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Lombardi C, Rucker RP, Froese RDJ, Sharif S, Champagne PA, Organ MG. Rate and Computational Studies for Pd‐NHC‐Catalyzed Amination with Primary Alkylamines and Secondary Anilines: Rationalizing Selectivity for Monoarylation versus Diarylation with NHC Ligands. Chemistry 2019; 25:14223-14229. [DOI: 10.1002/chem.201903362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/01/2019] [Indexed: 12/28/2022]
Affiliation(s)
| | - Richard P. Rucker
- Department of ChemistryYork University 4700 Keele St Toronto ON M3J 1P3 Canada
| | | | - Sepideh Sharif
- Department of ChemistryYork University 4700 Keele St Toronto ON M3J 1P3 Canada
- Centre for Catalysis Research and Innovation (CCRI)Department of Chemistry and Biomolecular SciencesUniversity of Ottawa, 75 Laurier Ave East Ottawa ON K1N 6N5 Canada
| | - Pier Alexandre Champagne
- Department of Chemistry and Environmental ScienceNew Jersey Institute of Technology Newark NJ 07102 USA
- Centre for Catalysis Research and Innovation (CCRI)Department of Chemistry and Biomolecular SciencesUniversity of Ottawa, 75 Laurier Ave East Ottawa ON K1N 6N5 Canada
| | - Michael G. Organ
- Department of ChemistryYork University 4700 Keele St Toronto ON M3J 1P3 Canada
- Centre for Catalysis Research and Innovation (CCRI)Department of Chemistry and Biomolecular SciencesUniversity of Ottawa, 75 Laurier Ave East Ottawa ON K1N 6N5 Canada
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32
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Hajipour AR, Khorsandi Z, Fatemeh Mohammadi Metkazini S. Palladium nanoparticles supported on cysteine-functionalized MNPs as robust recyclable catalysts for fast O- and N-arylation reactions in green media. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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33
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Roscales S, Csákÿ AG. Synthesis of Mono- N-Methyl Aromatic Amines from Nitroso Compounds and Methylboronic Acid. ACS OMEGA 2019; 4:13943-13953. [PMID: 31497712 PMCID: PMC6713987 DOI: 10.1021/acsomega.9b01608] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 06/12/2019] [Indexed: 05/08/2023]
Abstract
The selective synthesis of mono-N-methyl aromatic amines was achieved by the reaction of aromatic nitroso compounds with methylboronic acid promoted by triethylphosphite under transition metal-free conditions. The target compounds are constructed efficiently without overmethylation, under environmentally benign reaction conditions that do not require bases or reductants and therefore are of interest in pharmaceutical, agricultural, and chemical industries.
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Yu L, Yang C, Yu Y, Liu D, Hu L, Xiao Y, Song ZN, Tan Z. Ammonia as Ultimate Amino Source in Synthesis of Primary Amines via Nickel-Promoted C–H Bond Amination. Org Lett 2019; 21:5634-5638. [DOI: 10.1021/acs.orglett.9b01968] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Chan Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Yongqi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Da Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Liang Hu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Yuanjiu Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Ze-Nan Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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35
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Tran RQ, Jacoby SA, Roberts KE, Swann WA, Harris NW, Dinh LP, Denison EL, Yet L. Synthesis of 3-aryl-2-phosphinoimidazo[1,2- a]pyridine ligands for use in palladium-catalyzed cross-coupling reactions. RSC Adv 2019; 9:17778-17782. [PMID: 35520553 PMCID: PMC9064587 DOI: 10.1039/c9ra02200g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022] Open
Abstract
3-Aryl-2-phosphinoimidazo[1,2-a]pyridine ligands were synthesized from 2-aminopyridine via two complementary routes. The first synthetic route involves the copper-catalyzed iodine-mediated cyclizations of 2-aminopyridine with arylacetylenes followed by palladium-catalyzed cross-coupling reactions with phosphines. The second synthetic route requires the preparation of 2,3-diiodoimidazo[1,2-a]pyridine or 2-iodo-3-bromoimidazo[1,2-a]pyridine from 2-aminopyridine followed by palladium-catalyzed Suzuki/phosphination or a phosphination/Suzuki cross-coupling reactions sequence, respectively. Preliminary model studies on the Suzuki synthesis of sterically-hindered biaryl and Buchwald-Hartwig amination compounds are presented with these ligands.
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Affiliation(s)
- Ryan Q Tran
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - Seth A Jacoby
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - Kaitlyn E Roberts
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - William A Swann
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - Nekoda W Harris
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - Long P Dinh
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - Emily L Denison
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
| | - Larry Yet
- University of South Alabama, Department of Chemistry Mobile AL 36618 USA
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36
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Onoabedje EA, Okoro UC. Ligand-supported palladium-catalyzed cross-coupling reactions of (hetero) aryl chlorides. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1587778] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Uchechukwu Chris Okoro
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
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37
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Affiliation(s)
- Colin Diner
- Centre for Catalysis Research and Innovation (CCRI) and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Michael G. Organ
- Centre for Catalysis Research and Innovation (CCRI) and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
- Department of Chemistry, York University, 4700 Keele Street, Toronto M3J 1P3, Canada
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38
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Liu F, Hu YY, Li D, Zhou Q, Lu JM. N-Heterocyclic carbene-palladacyclic complexes: synthesis, characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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39
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Doherty S, Knight JG, Backhouse T, Abood E, Al-shaikh H, Clemmet AR, Ellison JR, Bourne RA, Chamberlain TW, Stones R, Warren NJ, Fairlamb IJS, Lovelock KRJ. Heteroatom Donor-Decorated Polymer-Immobilized Ionic Liquid Stabilized Palladium Nanoparticles: Efficient Catalysts for Room-Temperature Suzuki-Miyaura Cross-Coupling in Aqueous Media. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800561] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Simon Doherty
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Julian G. Knight
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Tom Backhouse
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Einas Abood
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Hind Al-shaikh
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Ashley R. Clemmet
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Jack R. Ellison
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU UK
| | - Richard A. Bourne
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering; University of Leeds; Woodhouse Lane Leeds LS2 9JT UK
| | - Thomas W. Chamberlain
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering; University of Leeds; Woodhouse Lane Leeds LS2 9JT UK
| | - Rebecca Stones
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering; University of Leeds; Woodhouse Lane Leeds LS2 9JT UK
| | - Nicholas J. Warren
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering; University of Leeds; Woodhouse Lane Leeds LS2 9JT UK
| | - Ian J. S. Fairlamb
- Department of Chemistry; University of York; Heslington, York YO10 5DD UK
| | - Kevin R. J. Lovelock
- School of Chemistry, Food and Pharmacy; University of Reading; Reading RG6 6AT UK
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40
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MacLean MA, Wheaton CA, Stradiotto M. Developing backbone-modified Mor-DalPhos ligand variants for use in palladium-catalyzed C–N and C–C cross-coupling. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The present contribution describes the systematic structural diversification of the κ2-P,N DalPhos ligand family in an effort to improve catalytic efficiency in the monoarylation of ammonia and acetone. The study is focused primarily on modifying the backbone phenylene linker, while retaining the same bite angle and steric bulk as the Mor-DalPhos ligand through the use of P(1-Ad)2 and morpholine donors. Eight new variants of Mor-DalPhos were prepared; two of these feature a pyridine linker (L1, L2), and five others feature either electron-donating (L3, L4) or electron-withdrawing (L5–L7) substituents on the phenylene linker. Additionally, thiomorpholino substitution (L8) was performed to investigate the effects of a possible tridentate coordination mode. Precatalyst complexes of the general formula LPd(cinnamyl)Cl were prepared and characterized in both solution and solid state. Solution studies demonstrated a significant degree of lability in the Pd–N bond, whereby dynamic behavior is seen to be dependent on the nature of the ligand backbone. The utility of these new ligands in the palladium-catalyzed monoarylation of ammonia or acetone was then surveyed. Notably, pyridine-derived ligand variants (L1, L2) were observed to out-perform parent Mor-DalPhos in the latter transformations.
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Affiliation(s)
- Mark A. MacLean
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Craig A. Wheaton
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Mark Stradiotto
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
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41
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Lavoie CM, Stradiotto M. Bisphosphines: A Prominent Ancillary Ligand Class for Application in Nickel-Catalyzed C–N Cross-Coupling. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01879] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Christopher M. Lavoie
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Mark Stradiotto
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
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Messina MS, Stauber JM, Waddington MA, Rheingold AL, Maynard HD, Spokoyny AM. Organometallic Gold(III) Reagents for Cysteine Arylation. J Am Chem Soc 2018; 140:7065-7069. [PMID: 29790740 PMCID: PMC6491213 DOI: 10.1021/jacs.8b04115] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient method for chemoselective cysteine arylation of unprotected peptides and proteins using Au(III) organometallic complexes is reported. The bioconjugation reactions proceed rapidly (<5 min) at ambient temperature in various buffers and within a wide pH range (0.5-14). This approach provides access to a diverse array of S-aryl bioconjugates including fluorescent dye, complex drug molecule, affinity label, poly(ethylene glycol) tags, and a stapled peptide. A library of Au(III) arylation reagents can be prepared as air-stable, crystalline solids in one step from commercial reagents. The selective and efficient arylation procedures presented in this work broaden the synthetic scope of cysteine bioconjugation and serve as promising routes for the modification of complex biomolecules.
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Affiliation(s)
- Marco S Messina
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
| | - Julia M Stauber
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
| | - Mary A Waddington
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States
| | - Heather D Maynard
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
- California NanoSystems Institute , University of California, Los Angeles , 570 Westwood Plaza , Los Angeles , California 90095-1569 , United States
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
- California NanoSystems Institute , University of California, Los Angeles , 570 Westwood Plaza , Los Angeles , California 90095-1569 , United States
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43
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Crawford SM, Wheaton CA, Mishra V, Stradiotto M. Probing the effect of donor-fragment substitution in Mor-DalPhos on palladium-catalyzed C–N and C–C cross-coupling reactivity. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The competitive catalytic screening of 18 known and newly prepared Mor-DalPhos ligand variants in the palladium-catalyzed cross-coupling of chlorobenzene with aniline, octylamine, morpholine, indole, ammonia, or acetone is presented, including ligands derived from the new secondary phosphine HP(Me2Ad)2 (Me2Ad = 3,5-dimethyladamantyl). Although triarylphosphine ancillary ligand variants performed poorly in these test reactions, ligands featuring either PAd2 or P(Me2Ad)2 donors (Ad = 1-adamantyl) gave rise to superior catalytic performance. Multiple Mor-DalPhos variants proved effective in cross-couplings involving aniline, octylamine, or morpholine; conversely, only a smaller subset of ligands proved useful in related cross-couplings of indole, ammonia, or acetone. In the case of the N-arylation of indole, a Mor-DalPhos ligand variant featuring ortho-disposed PAd2 and dimethylmorpholino donor fragments (L13) proved superior to all other ligands surveyed, including the parent ligand Mor-DalPhos (L5). Conversely, L5 was found to be superior to all other ligands in the palladium-catalyzed monoarylation of ammonia. Ligand L6 (i.e., the P(Me2Ad)2 variant of L5) proved superior to all other ligands in the monoarylation of acetone and, with the exception of indole N-arylation, was the most broadly useful of the Mor-DalPhos ligands surveyed herein.
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Affiliation(s)
- Sarah M. Crawford
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Craig A. Wheaton
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Vinayak Mishra
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Mark Stradiotto
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
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44
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45
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Dirvanauskas A, Galavotti R, Lunghi A, Nicolini A, Roncaglia F, Totti F, Cornia A. Solution structure of a pentachromium(ii) single molecule magnet from DFT calculations, isotopic labelling and multinuclear NMR spectroscopy. Dalton Trans 2018; 47:585-595. [DOI: 10.1039/c7dt03931j] [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
Solution NMR spectroscopy on isotopically-labelled samples of [Cr5(tpda)4Cl2] unveils a D4 symmetric molecule, implying fast shuttling between the two unsymmetric ground configurations over NMR timescale.
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Affiliation(s)
- Aivaras Dirvanauskas
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
- Department of Chemistry
| | - Rita Galavotti
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
| | - Alessandro Lunghi
- Department of Chemistry ‘Ugo Schiff’
- University of Florence & INSTM
- I-50019 Sesto Fiorentino (FI)
- Italy
| | - Alessio Nicolini
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
| | - Fabrizio Roncaglia
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
| | - Federico Totti
- Department of Chemistry ‘Ugo Schiff’
- University of Florence & INSTM
- I-50019 Sesto Fiorentino (FI)
- Italy
| | - Andrea Cornia
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
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Affiliation(s)
| | - Anis Tlili
- Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Claude Bernard Lyon 1, CNRS UMR 5246, 43 Boulevard du
11 Novembre 1918, 69100 Villeurbanne, France
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47
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Zhang S, Neumann H, Beller M. Pd-Catalyzed Cyanation of (Hetero)Aryl Halides by Using Biphosphine Ligands. Chemistry 2017; 24:67-70. [DOI: 10.1002/chem.201704178] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Shaoke Zhang
- Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; Albert-Einstein-Strasse 29 a Rostock 18059 Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; Albert-Einstein-Strasse 29 a Rostock 18059 Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; Albert-Einstein-Strasse 29 a Rostock 18059 Germany
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48
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Amal Joseph PJ, Priyadarshini S. Copper-Mediated C–X Functionalization of Aryl Halides. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00285] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- P. J. Amal Joseph
- Department
of Chemistry, St. Albert’s College, Ernakulam, Kerala 682018, India
| | - S. Priyadarshini
- Inorganic & Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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49
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Price GA, Hassan A, Chandrasoma N, Bogdan AR, Djuric SW, Organ MG. Pd-PEPPSI-IPent-SiO2
: A Supported Catalyst for Challenging Negishi Coupling Reactions in Flow. Angew Chem Int Ed Engl 2017; 56:13347-13350. [DOI: 10.1002/anie.201708598] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Gregory A. Price
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
| | - Abbas Hassan
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Nalin Chandrasoma
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
| | | | | | - Michael G. Organ
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
- Centre for Catalysis Research and Innovation (CCRI) and Department of Chemistry and Biomolecular Sciences; University of Ottawa; Ottawa Ontario K1N6N5 Canada
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50
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Price GA, Hassan A, Chandrasoma N, Bogdan AR, Djuric SW, Organ MG. Pd-PEPPSI-IPent-SiO2
: A Supported Catalyst for Challenging Negishi Coupling Reactions in Flow. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708598] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Gregory A. Price
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
| | - Abbas Hassan
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Nalin Chandrasoma
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
| | | | | | - Michael G. Organ
- Department of Chemistry; York University; 4700 Keele Street Toronto Ontario M3J1P3 Canada
- Centre for Catalysis Research and Innovation (CCRI) and Department of Chemistry and Biomolecular Sciences; University of Ottawa; Ottawa Ontario K1N6N5 Canada
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