Crystal structure of (E)-1-(4-chlorophenyl)ethanone O-dehydroabietyloxime

Abstract

The title compound, C28H34ClNO2 {systematic name: (E)-1-(4-chlorophenyl)ethanone O-[(1R,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carbonyl]oxime}, was synthesized from dehydroabietic acid. In the dehydroabietyl moiety, the central and terminal cyclohexane rings display chair and half-chair conformations, respectively, and a trans-ring junction. The C=N bond is in an E conformation and the C—O—N=C torsion angle is 148.1 (5)°. No directional interactions except van der Waals contacts occur in the crystal structure.

Keywords

• crystal structure
• dehydroabietic acid derivative
• oxime