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Regier J, Bolshan Y. Synthesis of C,N-Glycosides via Brønsted Acid-Catalyzed Azidation of exo-Glycals. J Org Chem 2024; 89:141-151. [PMID: 38110245 DOI: 10.1021/acs.joc.3c01842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
The reaction of exo-glycals with azidotrimethylsilane in the presence of a Brønsted acid leads to the generation of the corresponding C,N-glycosyl azides. The majority of these glycosylation reactions proceed at room temperature with short reaction times. In addition, the targeted products were obtained in high yields with exclusive diastereoselectivity to the α-anomer in pyranose-based derivatives. Carbohydrate units based on mannose, galactose, arabinose, and ribose were also shown to proceed in high yields.
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Affiliation(s)
- Jeffery Regier
- TLC Pharmaceutical Standards, Newmarket, Ontario L3Y 7B6, Canada
| | - Yuri Bolshan
- Faculty of Science, Ontario Tech University, Oshawa, Ontario L1G 0C5, Canada
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Abstract
A novel methodology for the arylation of exo-glycals has been developed. A range of exo-glycals underwent reactions with aryl iodides in the presence of a palladium catalyst. The transformation proceeded in a stereoselective manner to afford Z-isomers. The developed transformation demonstrated excellent functional group tolerance.
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Affiliation(s)
- Jeffery Regier
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada
| | - Supriya Ghanty
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada
| | - Yuri Bolshan
- Faculty of Science, Ontario Tech University, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada
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Affiliation(s)
- Jeffery Regier
- Faculty of Science; University of Ontario Institute of Technology; 2000 Simcoe Street North Oshawa Ontario L1H 7K Canada
| | - Robert Maillet
- Faculty of Medicine; University of Ottawa; 451 Smyth Rd. Ottawa Ontario K1H 8M5 Canada
| | - Yuri Bolshan
- Faculty of Science; University of Ontario Institute of Technology; 2000 Simcoe Street North Oshawa Ontario L1H 7K Canada
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Anwar MU, Al-Harrasi A, Rawson JM, Gavey EL, Regier J, Alexandropoulos D, Pilkington M, Thompson LK. Slow magnetic relaxation in Dy2 and Dy4 complexes of a versatile, trifunctional polydentate N,O-ligand. Dalton Trans 2019; 48:14269-14278. [DOI: 10.1039/c9dt02331c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A binuclear DyIII complex exhibits slow relaxation of magnetization under an applied dc field, while its tetranuclear counterpart exhibits “true” zero-field SMM behaviour.
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Affiliation(s)
- Muhammad U. Anwar
- Natural and Medical Sciences Research Centre
- University of Nizwa
- Nizwa
- Oman
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Centre
- University of Nizwa
- Nizwa
- Oman
| | | | - Emma L. Gavey
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
| | - Jeffery Regier
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
| | | | - Melanie Pilkington
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
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Al Hareri M, Ras Ali Z, Regier J, Gavey EL, Carlos LD, Ferreira RAS, Pilkington M. Dual-Property Supramolecular H-Bonded 15-Crown-5 Ln(III) Chains: Joint Magneto-Luminescence and ab Initio Studies. Inorg Chem 2017. [DOI: 10.1021/acs.inorgchem.7b00089] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Majeda Al Hareri
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario L2S 3A1, Canada
| | - Zineb Ras Ali
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario L2S 3A1, Canada
| | - Jeffery Regier
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario L2S 3A1, Canada
| | - Emma L. Gavey
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario L2S 3A1, Canada
| | - Luis D. Carlos
- Physics
Department and CICECO—Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
| | - Rute A. S. Ferreira
- Physics
Department and CICECO—Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
| | - Melanie Pilkington
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St Catharines, Ontario L2S 3A1, Canada
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Mazarakioti EC, Regier J, Cunha-Silva L, Wernsdorfer W, Pilkington M, Tang J, Stamatatos TC. Large Energy Barrier and Magnetization Hysteresis at 5 K for a Symmetric {Dy2} Complex with Spherical Tricapped Trigonal Prismatic DyIII Ions. Inorg Chem 2017; 56:3568-3578. [DOI: 10.1021/acs.inorgchem.7b00026] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eleni C. Mazarakioti
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, L2S 3A1 St. Catharines, Ontario, Canada
| | - Jeffery Regier
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, L2S 3A1 St. Catharines, Ontario, Canada
| | - Luís Cunha-Silva
- REQUIMTE-LAQV & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Wolfgang Wernsdorfer
- Institut Néel, CNRS & Université Grenoble Alpes, BP 166, 25 avenue des Martyrs, 38042 Grenoble Cedex 9, France
- Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Wolfgang-Gaede-Str. 1, D-76131 Karlsruhe, Germany
- Institut für
Nanotechnologie, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz
1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Melanie Pilkington
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, L2S 3A1 St. Catharines, Ontario, Canada
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource
Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Theocharis C. Stamatatos
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, L2S 3A1 St. Catharines, Ontario, Canada
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Al Hareri M, Gavey EL, Regier J, Ras Ali Z, Carlos LD, Ferreira RAS, Pilkington M. Encapsulation of a [Dy(OH2)8]3+ cation: magneto-optical and theoretical studies of a caged, emissive SMM. Chem Commun (Camb) 2016; 52:11335-8. [DOI: 10.1039/c6cc03578g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magnetization dynamics of an emissive [Dy(OH2)8]3+ complex with local pseudo D4d symmetry encapsulated within a supramolecular cage have been unraveled by magneto-optical and ab initio studies.
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Affiliation(s)
- M. Al Hareri
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - E. L. Gavey
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - J. Regier
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - Z. Ras Ali
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - L. D. Carlos
- Physics Department and CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - R. A. S. Ferreira
- Physics Department and CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - M. Pilkington
- Department of Chemistry
- Brock University
- St Catharines
- Canada
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White CM, Regier J, Wheeling D. Community health nursing. NLN Publ 1989:381-430. [PMID: 2755807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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