1
|
Gangwar P, Negi SS, Ramanathan V, Ramachandran CN. Effect of confinement on the electronic and optical properties of azobenzene: cucurbituril as a means of confinement. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2109523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Peaush Gangwar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | - Saurabh Singh Negi
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| | | | - C. N. Ramachandran
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, India
| |
Collapse
|
2
|
Chalikidi PN, Magkoev TT, Gutnov AV, Demidov OP, Uchuskin MG, Trushkov IV, Abaev VT. One-Step Synthesis of Triphenylphosphonium Salts from (Het)arylmethyl Alcohols. J Org Chem 2021; 86:9838-9846. [PMID: 34232646 DOI: 10.1021/acs.joc.1c00733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two approaches for the synthesis of substituted phosphonium salts from easily available benzyl alcohols and their heterocyclic analogs have been developed. The developed protocols are complementary: the direct mixing of alcohol, trimethylsilyl bromide, and triphenylphosphine in 1,4-dioxane followed by heating at 80 °C was found to be more efficient for acid-sensitive substrates, such as salicyl or furfuryl alcohols as well as secondary benzyl alcohols, while a one-pot procedure including sequential addition of trimethylsilyl bromide and triphenylphosphine gave higher yields for benzyl alcohols bearing electroneutral or electron-withdrawing substituents.
Collapse
Affiliation(s)
- Petrakis N Chalikidi
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation
| | - Taimuraz T Magkoev
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation
| | - Andrey V Gutnov
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation.,Chiroblock GmbH, Andresenstr. 1a, Wolfen, 06766, Germany
| | - Oleg P Demidov
- North Caucasus Federal University, Pushkin st. 1, Stavropol, 355009, Russian Federation
| | - Maxim G Uchuskin
- Perm State University, Bukireva st. 15, Perm, 614990, Russian Federation
| | - Igor V Trushkov
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky pr. 47, Moscow, 119334, Russian Federation.,D. Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samory Mashela st. 1, Moscow, 117997, Russian Federation
| | - Vladimir T Abaev
- North-Ossetian State University, Vatutina st. 46, Vladikavkaz, 362025, Russian Federation.,North Caucasus Federal University, Pushkin st. 1, Stavropol, 355009, Russian Federation
| |
Collapse
|
3
|
Almáši M, Király N, Zeleňák V, Vilková M, Bourrelly S. Zinc(ii) and cadmium(ii) amorphous metal-organic frameworks (aMOFs): study of activation process and high-pressure adsorption of greenhouse gases. RSC Adv 2021; 11:20137-20150. [PMID: 35479897 PMCID: PMC9033798 DOI: 10.1039/d1ra02938j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/29/2021] [Indexed: 01/05/2023] Open
Abstract
Two novel amorphous metal-organic frameworks (aMOFs) with chemical composition {[Zn2(MTA)]·4H2O·3DMF} n (UPJS-13) and {[Cd2(MTA)]·5H2O·4DMF} n (UPJS-14) built from Zn(ii) and Cd(ii) ions and extended tetrahedral tetraazo-tetracarboxylic acid (H4MTA) as a linker were prepared and characterised. Nitrogen adsorption measurements were performed on as-synthesized (AS), ethanol exchanged (EX) and freeze-dried (FD) materials at different activation temperatures of 60, 80, 100, 120, 150 and 200 °C to obtain the best textural properties. The largest surface areas of 830 m2 g-1 for UPJS-13 (FD) and 1057 m2 g-1 for UPJS-14 (FD) were calculated from the nitrogen adsorption isotherms for freeze-dried materials activated at mild activation temperature (80 °C). Subsequently, the prepared compounds were tested as adsorbents of greenhouse gases, carbon dioxide and methane, measured at high pressures. The maximal adsorption capacities were 30.01 wt% CO2 and 4.84 wt% CH4 for UPJS-13 (FD) and 24.56 wt% CO2 and 6.38 wt% CH4 for UPJS-14 (FD) at 20 bar and 30 °C.
Collapse
Affiliation(s)
- Miroslav Almáši
- Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Moyzesova 11 SK-041 54 Košice Slovak Republic
| | - Nikolas Király
- Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Moyzesova 11 SK-041 54 Košice Slovak Republic
| | - Vladimír Zeleňák
- Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Moyzesova 11 SK-041 54 Košice Slovak Republic
| | - Mária Vilková
- NMR Laboratory, Faculty of Science, P. J. Šafárik University Moyzesova 11 SK-041 01 Košice Slovak Republic
| | - Sandrine Bourrelly
- Aix-Marseille University, CNRS, MADIREL Marseille Cedex 20 F-133 97 France
| |
Collapse
|
4
|
Sarkar S, Sarkar P, Ghosh P. Heteroditopic Macrobicyclic Molecular Vessels for Single Step Aerial Oxidative Transformation of Primary Alcohol Appended Cross Azobenzenes. J Org Chem 2021; 86:6648-6664. [PMID: 33908241 DOI: 10.1021/acs.joc.1c00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of oxy-ether tris-amino heteroditopic macrobicycles (L1-L4) with various cavity dimensions have been synthesized and explored for their Cu(II) catalyzed selective single step aerial oxidative cross-coupling of primary alcohol based anilines with several aromatic amines toward the formation of primary alcohol appended cross azobenzenes (POCABs). The beauty of this transformation is that the easily oxidizable benzyl/primary alcohol group remains unhampered during the course of this oxidation due to the protective oxy-ether pocket of this series of macrobicyclic vessels. Various dimensionalities of the molecular vessels have shown specific size complementary selection for substrates toward efficient syntheses of regioselective POCAB products. To establish the requirement of the three-dimensional cavity based additives, a particular catalytic reaction has been examined in the presence of macrobicycles (L2 and L3) versus macrocycles (MC1 and MC2) and tripodal acyclic (AC1 and AC2) analogous components, respectively. Subsequently, L1-L4 have been extensively utilized toward the syntheses of as many as 44 POCABs and are characterized by different spectroscopic techniques and single crystal X-ray diffraction studies.
Collapse
Affiliation(s)
- Sayan Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Piyali Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| |
Collapse
|
5
|
Raschmanová JŠ, Martinková M, Gonda J, Pilátová MB, Kuchár J, Jáger D. Synthesis and in vitro biological evaluation of 3-amino-3-deoxydihydrosphingosines and their analogues. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|