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V.M. V, Chetti P. Impact of polycyclic aromatic hydrocarbons and heteroatomic bridges (N, S, and O) on optoelectronic properties of 1,3,5‐triazine derivatives: A computational insight. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vidya V.M.
- Department of Chemistry National Institute of Technology Kurukshetra India
| | - Prabhakar Chetti
- Department of Chemistry National Institute of Technology Kurukshetra India
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Heravi MM, Panahi F, Iranpoor N. Nickel-catalyzed reductive amidation of aryl-triazine ethers. Chem Commun (Camb) 2020; 56:1992-1995. [PMID: 31960851 DOI: 10.1039/c9cc08727c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The reaction of activated phenolic compounds, 2,4,6-triaryloxy-1,3,5-triazine (aryl-triazine ethers), with various isocyanates or carbodiimides in the presence of a nickel pre-catalyst resulted in the synthesis of aryl amides in good to excellent yields.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University, Vanak, Tehran, Iran.
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8
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Stavila V, Foster ME, Brown JW, Davis RW, Edgington J, Benin AI, Zarkesh RA, Parthasarathi R, Hoyt DW, Walter ED, Andersen A, Washton NM, Lipton AS, Allendorf MD. IRMOF-74( n)-Mg: a novel catalyst series for hydrogen activation and hydrogenolysis of C-O bonds. Chem Sci 2019; 10:9880-9892. [PMID: 32015812 PMCID: PMC6977460 DOI: 10.1039/c9sc01018a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 09/02/2019] [Indexed: 12/15/2022] Open
Abstract
Metal-Organic Frameworks (MOFs) that catalyze hydrogenolysis reactions are rare and there is little understanding of how the MOF, hydrogen, and substrate molecules interact. In this regard, the isoreticular IRMOF-74 series, two of which are known catalysts for hydrogenolysis of aromatic C-O bonds, provides an unusual opportunity for systematic probing of these reactions. The diameter of the 1D open channels can be varied within a common topology owing to the common secondary building unit (SBU) and controllable length of the hydroxy-carboxylate struts. We show that the first four members of the IRMOF-74(Mg) series are inherently catalytic for aromatic C-O bond hydrogenolysis and that the conversion varies non-monotonically with pore size. These catalysts are recyclable and reusable, retaining their crystallinity and framework structure after the hydrogenolysis reaction. The hydrogenolysis conversion of phenylethylphenyl ether (PPE), benzylphenyl ether (BPE), and diphenyl ether (DPE) varies as PPE > BPE > DPE, consistent with the strength of the C-O bond. Counterintuitively, however, the conversion also follows the trend IRMOF-74(III) > IRMOF-74(IV) > IRMOF-74(II) > IRMOF-74(I), with little variation in the corresponding selectivity. DFT calculations suggest the unexpected behavior is due to much stronger ether and phenol binding to the Mg(ii) open metal sites (OMS) of IRMOF-74(III), resulting from a structural distortion that moves the Mg2+ ions toward the interior of the pore. Solid-state 25Mg NMR data indicate that both H2 and ether molecules interact with the Mg(ii) OMS and hydrogen-deuterium exchange reactions show that these MOFs activate dihydrogen bonds. The results suggest that both confinement and the presence of reactive metals are essential for achieving the high catalytic activity, but that subtle variations in pore structure can significantly affect the catalysis. Moreover, they challenge the notion that simply increasing MOF pore size within a constant topology will lead to higher conversions.
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Affiliation(s)
- Vitalie Stavila
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Michael E Foster
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Jonathan W Brown
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Ryan W Davis
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Jane Edgington
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Annabelle I Benin
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Ryan A Zarkesh
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Ramakrishnan Parthasarathi
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - David W Hoyt
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Eric D Walter
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Amity Andersen
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Nancy M Washton
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Andrew S Lipton
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Mark D Allendorf
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
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9
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Amin HIM, Raviola C, Amin AA, Mannucci B, Protti S, Fagnoni M. Hydro/Deutero Deamination of Arylazo Sulfones under Metal- and (Photo)Catalyst-Free Conditions. Molecules 2019; 24:E2164. [PMID: 31181774 PMCID: PMC6601019 DOI: 10.3390/molecules24112164] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 11/17/2022] Open
Abstract
Hydrodeaminated and monodeuterated aromatics were obtained via a visible-light driven reaction of arylazo sulfones. Deuteration occurs efficiently in deuterated media such as isopropanol-d8 or in THF-d8/water mixtures and exhibits a high tolerance to the nature and the position of the aromatic substituents.
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Affiliation(s)
- Hawraz I M Amin
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
- Chemistry Department, College of Science, Salahaddin University-Erbil, Erbil 44001, Iraq.
| | - Carlotta Raviola
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
| | - Ahmed A Amin
- Chemistry Department, College of Education, Salahaddin University-Erbil, Erbil 44001, Iraq.
| | - Barbara Mannucci
- Centro Grandi Strumenti (CGS), University of Pavia, V. Bassi 21, 27100 Pavia, Italy.
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
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