New method to follow the dimerisation reaction occurring during oxidation of 4-ethylguaiacol

Holzforschung

Volumn 56, Issue 6, 2002, Pages 601-606

  Sippola, Väinö ^a   Viljava, Tuula Riitta ^a   Vilonen, Kati ^a   Krause, Outi ^a  

^a AALTO UNIVERSITY   (Finland)

Author keywords

4 Ethylguaiacol; Cobalt Schiff base catalyst; Dimerisation; Oxidation; UV Vis

Indexed keywords

BLEACHED PULP; CATALYSTS; DIMERIZATION; KRAFT PULP; LIGNIN; OXIDATION; PH EFFECTS; SPECTROPHOTOMETERS;

PHENOLIC COMPOUNDS;

WOOD;

BLEACHED PULPS; CATALYSTS; KRAFT PULPING; LIGNINS; OXIDATION; SPECTROMETERS; WOOD;

EID: 0036452530     PISSN: 00183830     EISSN: None     Source Type: Trade Journal    
DOI: 10.1515/HF.2002.092     Document Type: Article

References (14)

1. Bozell, J.J., B.R. Hames and D.R. Dimmel. 1995. Cobalt-Schiff base complex catalyzed oxidation of para-substituted phenolics. Preparation of benzoquinones. J. Org. Chem. 60, 2398-2404.
2. Gellerstedt, G. and E.-L. Lindfors. 1984a. Structural changes in lignin during kraft pulping. Holzforschung 38, 151-158.
3. Gellerstedt, G. and E.-L. Lindfors. 1984b. Structural changes in lignin during kraft cooking, Part 4. Phenolic hydroxyl groups in wood and kraft pulps. Svensk Papperstidn. 8(15), R115-R118.
4. Gellerstedt, G. and K. Gustavsson. 1987. Structural changes in lignin during kraft cooking, Part 5. Analysis of dissolved lignin by oxidative degradation. J. Wood Chem. Technol. 7, 65-80.
5. Gellerstedt, G., K. Gustavsson and E.-L. Lindfors. 1986. Structural changes in lignin during oxygen bleaching. Nordic Pulp Paper Res. J. 1(3), 14-17.
6. Gierer, J. and F. Imsgard. 1977. The reactions of lignins with oxygen and hydrogen peroxide in alkaline media. Svensk Papperstidn. 80, 510-518.
7. Hagström-Näsi, C. and E. Sjöström. 1988. Alkaline oxygen oxidation of dioxane lignin and creosol in aqueous ethanol. J. Wood Chem. Technol. 8, 299-313.
8. Haikarainen, A., K. Kervinen, J. Sipilä, C. Wiik, T. Repo and M. Leskelä. 2002. Metal Schiff-base Complexes as Useful Tools in Biomimetic Phenol Oxidation Research. Manuscript.
9. Kratzl, K., J. Gratzl and P. Claus. 1966. Formation and degradation of biphenyl structures during alkaline oxidation of phenols with oxygen. Adv. in Chem. Series 59, 157-176.
10. Langenbeek, W. and K. Oehler. 1956. Organische Katalysatoren, XLII. Mitteil.: Chelatkatalysen III. Chem. Ber. 89, 2455-2459.
11. Ljunggren, S. and E. Johansson. 1990. The kinetics of lignin reactions during oxygen bleaching, Part 3. The reactivity of 4-n-propylguaiacol and 4,4′-dipropyl-6,6′-biguaiacol. Holzforschung 44, 291-296.
12. Mukherjee, A.J. and P. Ray. 1955. Metal chelate complexes of sulfosalicylaldehyde with polycyclic rings. J. Indian Chem. Soc. 32, 633-643.
13. San Clemente, M.R., K.V. Sarkanen and S.E. Sundin. 1981. Alkaline autoxidation of 4-ethylguaiacol. Svensk Papperstidn. 84(3), R1-R5.
14. Singh, A. 1982. Chemical and biochemical aspects of superoxide radicals and related species of activated oxygen. Can. J. Phys. Pharmacol. 60, 1330-1345.