Crystal structure of (E)-4,4′-(but-2-ene-1,4-diyl)bis(2-methoxyphenol)

Abstract

The title compound, C18H20O4, was synthesized via the ruthenium-catalyzed alkene methathesis dimerization of eugenol. The whole molecule is generated by inversion symmetry; the center of inversion being located at the mid-point of the trans C=C bond. The phenol ring is inclined to the mean plane of the central C—C=C—C unit (r.m.s. deviation = 0.014 Å) by 68.83 (16)°. In the crystal, molecules are linked via O—H...O hydrogen bonds, involving the hydroxy and methoxy groups, forming undulating sheets parallel to (010).

Keywords

• crystal structure
• metathesis
• dimerization of eugenol
• hydrogen bonding