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Conformation of 1-aryl-2-aryloxy-1-propanols: threo-1-(4-hydroxy-3-methoxyphenyl)-2-(2-methoxyphenoxy)-1-propanol

Vratislav Langer (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Shiming Li (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; Knut Lundquist (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik)
Acta Crystallographica Section C: Crystal Structure Communications (0108-2701). Vol. C64 (2008), 10, p. o558-o560.
[Artikel, refereegranskad vetenskaplig]

The title compound, C17H20O5, (I), is structurally related to naturally occurring 1-aryl-2-aryloxy-1-propanols. Such compounds are of interest as lignin models, and neolignans of this type have been detected in a large number of plants. In the crystal structure of (I), the molecules adopt a conformation in which the aryl groups are far apart from each other. The O(aryloxy)-C-C-C(aryl) torsion angle is 177.76(14)°. The conformation is compared with those of other compounds (neolignans and lignin model compounds) of the 1-aryl-2-aryloxy-1-propanol type (including some acetate derivatives). The comparison shows that in all the examined compounds the above-mentioned torsion angle is close to 180°, and the distance between the centers of the aromatic rings approaches the maximum achievable in most of the compounds. The hydrogen-bonding pattern of (I) is discussed in terms of graph-set theory.

Nyckelord: X-ray strusture determination, conformation, lignin model

Denna post skapades 2008-09-23.
CPL Pubid: 74272


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)
Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik (2005-2014)


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