OXIDATION OF BETA-O-4 LIGNIN MODEL DIMERS BY H2O2 CATALYZED BY COPPER PHENANTHROLINE
Halma, M; Lachenal, D; Deronzier, A; Marlin, N; Zarubin, M
| HERO ID | 4084329 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | OXIDATION OF BETA-O-4 LIGNIN MODEL DIMERS BY H2O2 CATALYZED BY COPPER PHENANTHROLINE |
| Authors | Halma, M; Lachenal, D; Deronzier, A; Marlin, N; Zarubin, M |
| Volume | 1 |
| Page Numbers | 233-237 |
| Abstract | This work aims at elucidating some of the key steps of the oxidation pathways of lignin model compounds using Cu(II)-phenantroline as catalyst and hydrogen peroxide as oxidant. Phenolic and non-phenolic beta-O-4 dimeric phenyl propane structures were selected as lignin models since they represent the most abundant structures in lignin. <br> <br>The compounds used in this work are not commercially available; therefore all of them were synthesized. <br> <br>Oxidation reactions were carried out under alkaline conditions, at 80 degrees C for 3 h. The lignin model dimer (LMD) disappearance and some of the oxidation products were identified by HPLC analyses. <br> <br>Products as acetaldehyde, veratric or vanillic acid, and guaiacol were identified as resultant products of LMD oxidations. A tentative mechanism which involves the oxidation of the benzylic alcohol group followed by the cleavage of the beta-ether linkages is proposed. |
| Wosid | WOS:000394407800048 |
| Url | <Go to ISI>://WOS:000394407800048 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:16TH INTERNATIONAL SYMPOSIUM ON WOOD, FIBER AND PULPING CHEMISTRY, PROCEEDINGS, VOLS I & IIScopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84855711897&partnerID=40&md5=2f7a44ef6f3ddd6ab0b7b2058ab9af65 |
| Is Public | Yes |
| Language Text | English |
| Keyword | lignin model dimer; copper-phenanthroline; hydrogen peroxide; oxidation catalysis |