Conformation of 1-aryl-2-aryloxy-1-propanols: threo-1-(4-hydroxy-3-methoxyphenyl)-2-(2-methoxyphenoxy)-1-propanol
Journal article, 2008

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.

lignin model

conformation

X-ray strusture determination

Author

Vratislav Langer

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Shiming Li

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

Knut Lundquist

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

Acta Crystallographica Section C: Crystal Structure Communications

0108-2701 (ISSN) 1600-5759 (eISSN)

Vol. C64 10 o558-o560

Subject Categories

Structural Biology

Organic Chemistry

DOI

10.1107/S0108270108026565

More information

Created

10/6/2017