| Journal: | Journal of the Brazilian Chemical Society |
| Database: | PERIÓDICA |
| System number: | 000310940 |
| ISSN: | 0103-5053 |
| Authors: | Alves, Vera L1 Drumond, Mariza G Stefani, Guglielmo M Chen, Chen-Loung2 Pilo-Veloso, Dorila |
| Institutions: | 1Universidade Federal de Minas Gerais, Departamento de Quimica, Belo Horizonte, Minas Gerais. Brasil 2North Carolina State University, Department of Wood and Paper Science, Raleigh, Carolina del Norte. Estados Unidos de América |
| Year: | 2000 |
| Season: | Oct |
| Volumen: | 11 |
| Number: | 5 |
| Pages: | 467-473 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | Trimeric lignin model compounds containing biphenyl (5-5') and beta-aryl ether (beta-O-4') were synthesized from dehydrodivanillin derivatives and alpha-bromo acetovanillone derivatives via Williamson's reaction. The ¹H and 13C NMR characteristics of the resulting trimers were studied using corresponding ¹H and 13C NMR spectra as well as homo- and heteronuclear 2D NMR techniques. The results are discussed in terms of signal assignment and conformation of the molecules |
| Portuguese abstract | Os trímeros-modelo de lignina contendo as subestruturas bifenila (5-5') e aril-éter (beta-O-4') foram sintetizados a partir dos derivados da desidrodivanilina e da alfa-bromo acetovanilona pela reação de Williamson. O estudo de RMN de ¹H e de 13C destes trímeros foi feito utilizando as técnicas homo e heteronucleares. A atribuição dos sinais de RMN de ¹H e de 13C e a conformação das moléculas são também discutidas neste artigo |
| Disciplines: | Química |
| Keyword: | Química orgánica, Lignina, Bifenilo, Estructura química, Resonancia magnética nuclear, Espectroscopía |
| Keyword: | Chemistry, Organic chemistry, Lignin, Biphenyl, Chemical structure, Nuclear magnetic resonance, Spectroscopy |
| Full text: | Texto completo (Ver HTML) |
