LIGNIN MODEL COMPOUNDS - 4,4'-O-DIMETHYLDEHYDRODIACETOVANILLONE AND 4,4'-O-DIETHYLDEHYDRODIACETOVANILLONE

Authors
FERREIRA MA COSTA MDD MENDES IMC DRUMOND MG PILOVELOSO D FERNANDES NG
Citation
Ma. Ferreira et al., LIGNIN MODEL COMPOUNDS - 4,4'-O-DIMETHYLDEHYDRODIACETOVANILLONE AND 4,4'-O-DIETHYLDEHYDRODIACETOVANILLONE, Acta crystallographica. Section C, Crystal structure communications, 54, 1998, pp. 837-840
Citations number
11
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
54
Year of publication
1998
Part
6
Pages
837 - 840
Database
ISI
SICI code
0108-2701(1998)54:<837:LMC-4A>2.0.ZU;2-Y
Abstract
The title compounds, ,5'-diacetyl-2,2',3,3'-tetramethoxy-1,1'-biphenyl , C20H22O6, and 5,5'-diacetyl-2,2'-diethoxy-3,3'- dimethoxy-1,1'-biphe nyl (IUPAC nomenclature), C22H26O6, correspond to the 5,5'-biphenyl-ty pe lignin model compound. They were synthesized from dehydrodiacetovan illone by alkylation with CH3I and C2H5I, In the former compound, all non-H atoms in the asymmetric unit are planar except for one C atom. I n the latter compound, there are two molecules of different conformati ons, one of which is affected by disorder.