Synthesis of Octahydro-2H-Chromen-4-ol from Vanillin and Isopulegol over Acid Modified Montmorillonite Clays: Effect of Acidity on the Prins Cyclization Full article
Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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Output data | Year: 2015, Volume: 398, Pages: 26-34 Pages count : 9 DOI: 10.1016/j.molcata.2014.11.016 | ||||||||||||||||
Tags | (-)-Isopulegol Vanillin, Acid-activated montmorillonite, Octahydro-2H-chromen-4-ol, Prins cyclization reaction | ||||||||||||||||
Authors |
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Affiliations |
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Funding (6)
1 | Federal Agency for Scientific Organizations | V.44.2.12. |
2 | Russian Foundation for Basic Research | 14-03-00854 |
3 | Russian Foundation for Basic Research | 14-05-00297 |
4 | Ministry of Economic Affairs and Digital Transformation | MAT2013-47811-C2-1-R, MAT2013-47811-C2-2-R |
5 | The Ministry of Education and Science of the Russian Federation | |
6 | Ministry of Economic Affairs and Digital Transformation |
Abstract:
Two calcium-rich natural layered aluminosilicates containing 90-95 wt.% montmorillonite were chemically activated using 0.125-3.0 M HCl solutions. Structural and textural properties were characterized by X-ray diffraction, elemental analysis and N2-adsorption/desorption analyses. According to infrared spectroscopy using pyridine as probe molecule, the amount of Brønsted acid sites increased when increasing HCl concentration. The catalytic performance of these materials was investigated in the Prins cyclization of (-)-isopulegol with vanillin to form octahydro-2H-chromen-4-ol, carried out in toluene at 35 ºC. It was found that the amount of Brønsted acid sites and the microporosity of the catalysts are key factors for the control of the reaction rate and the selectivity towards octahydro-2H-chromen-4-ol.
Cite:
Timofeeva M.N.
, Volcho K.P.
, Mikhalchenko O.S.
, Panchenko V.N.
, Krupskaya V.V.
, Tsybulya S.V.
, Gil A.
, Vicente M.A.
, Salakhutdinov N.F.
Synthesis of Octahydro-2H-Chromen-4-ol from Vanillin and Isopulegol over Acid Modified Montmorillonite Clays: Effect of Acidity on the Prins Cyclization
Journal of Molecular Catalysis A: Chemical. 2015. V.398. P.26-34. DOI: 10.1016/j.molcata.2014.11.016 WOS Scopus РИНЦ ANCAN OpenAlex
Synthesis of Octahydro-2H-Chromen-4-ol from Vanillin and Isopulegol over Acid Modified Montmorillonite Clays: Effect of Acidity on the Prins Cyclization
Journal of Molecular Catalysis A: Chemical. 2015. V.398. P.26-34. DOI: 10.1016/j.molcata.2014.11.016 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: | Oct 9, 2014 |
Accepted: | Nov 17, 2014 |
Published online: | Nov 24, 2014 |
Published print: | Mar 1, 2015 |
Identifiers:
Web of science: | WOS:000352115600004 |
Scopus: | 2-s2.0-84919345048 |
Elibrary: | 24019505 |
Chemical Abstracts: | 2014:2012799 |
Chemical Abstracts (print): | 162:160846 |
OpenAlex: | W2010932221 |