PL EN


Preferences help
enabled [disable] Abstract
Number of results
2009 | 11 | 3 | 5-7
Article title

Novel catalytic synthesis of 6,7-dimethoxyisatin with the use of heteropolyacids (HPAs) as acid solid catalyst

Content
Title variants
Languages of publication
EN
Abstracts
EN
An efficient method for the preparation of 6,7-dimethoxyisatin and its derivatives was developed with good yield by using Preyssler-type heteropolyacid (HPA) as acid catalyst under green conditions. The comparison between Keggin type heteropolyacids, H3[PW12O40], H4[SiW12O40] and H4[SiMo12O40], H3[PMo12O40] and mineral acids with Preyssler's anion shows that the latter possess better catalytical activity than the other heteropolyacids and no degradation of the structure was observed.
Publisher

Year
Volume
11
Issue
3
Pages
5-7
Physical description
Dates
published
1 - 1 - 2009
online
9 - 10 - 2009
Contributors
author
  • School of Pharmacy, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3V6
author
  • Cluster for Molecular Chemistry, Department of Organic Chemistry, Radboud University Nijmegen, The Netherlands
  • Department of Chemistry, School of Science, Islamic Azad University, Mashhad, IRAN
author
  • Department of Chemistry, School of Science, Islamic Azad University, Mashhad, IRAN
  • Department of Chemistry, School of Science, Islamic Azad University, Mashhad, IRAN
References
  • Romanelli, G., Autino J. C., Baronetti, G. & Thomas, H. (2001). H. Efficient Deprotection of Phenol Methoxymethyl Ethers Using a Solid Acid Catalyst with Wells-Dawson Structure. Molecules. 6, 1006-1011. DOI:10.3390/61201006.[Crossref]
  • Okuhara, T., Mizuno, N. & Misono, M. (1996). Advances in Catalysis. Catalytic Chemistry of Heteropoly compounds. 41, 113-252.
  • Kozhevnikov, I. V. (1987). Advances in catalysis by heteropoly acids. Advances in catalysis by heteropoly acids. Russ. Chem. Rev. 56(9), 811-825. DOI: 10.1070/RC1987v056n09ABEH003304.[Crossref]
  • Joaquim, F. M., Simon, J. G. & Angelo, C. P. (2001). The Chemistry of Isatins: a Review from 1975 to 1999. J. Braz. Chem. Soc. 12 (3), 273-324. DOI: 10.1590/S0103-50532001000300002.[Crossref]
  • Bergman, J., Lindström, J. O. & Tilstam, U. (1985). The structure and properties of some indolic constituents in Couroupita guianensis aubl. Tetrahedron. 41 (14), 2879-2881. DOI:10.1016/S0040-4020(01)96609-8.[Crossref]
  • Kapadia, G. J., Shukla, Y. N., Basak, S. P., Sokoloski, E. A. & Fales, H. M. (1980). The melosatins a novel class of alkaloids from melochia tomentosa. Tetrahedron. 36, 2441-2447. DOI:10.1016/0040-4020(80)80221-3.[Crossref]
  • Hodges, R. J., Ronaldson, W., Taylor, A. & White, E. P. (1963). Sporidesmins. Part II. The structure of degradation products related to 5-chloro-6,7-dimethoxyisatin. J. Chem. Soc. 5332-5336. DOI: 10.1039/JR9630005332.[Crossref]
  • Gulland, J. M., Robinson, R., Scott, J. & Thornley, S. (1929). 6: 7-Dimethoxyisatin, 5: 6-methylenedioxyisatin, and the nuclear degradation of 3: 4-methylenedioxyquindoline. J. Chem. Soc. 2924-2927. DOI: 10.1039/JR9290002924.[Crossref]
  • Bamoharram, F. F., Heravi, M. M., Roshani, M., Gharib, A. & Jahangir, M. (2006). A catalytic method for synthesis of γ-butyrolactone, ε-caprolactone and 2-cumaranone in the presence of Preyssler's anion, [NaP5W30O110]14-, as a green and reusable catalyst. J. Mol. Catal. 252, 90-95. DOI:10.1016/j.molcata.2006.01.067.[Crossref]
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_v10026-009-0028-8
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.