title: Crystal structure of (E)-1-(4-chloro-phen-yl)ethanone O-de-hydro-abietyloxime.
abstract: The title compound, C28H34ClNO2 {systematic name: (E)-1-(4-chloro-phen-yl)ethanone O-[(1R,4aS,10aR)-7-isopropyl-1,4a-di-methyl-1,2,3,4,4a,9,10,10a-octa-hydro-phenanthrene-1-carbonyl]oxime}, was synthesized from de-hydro-abietic acid. In the de-hydro-abietyl moiety, the central and terminal cyclo-hexane 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 inter-actions except van der Waals contacts occur in the crystal structure.
authors.affiliation: Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, National Engineering Lab. for Biomass Chemical Utilization, Key and Lab. on Forest Chemical Engineering, SFA, Nanjing, 210042, People's Republic of China.
authors.forename: Jian-Qiang
authors.initials: JQ
authors.lastname: Zheng
authors.affiliation: Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, National Engineering Lab. for Biomass Chemical Utilization, Key and Lab. on Forest Chemical Engineering, SFA, Nanjing, 210042, People's Republic of China.
authors.forename: Yan-Jie
authors.initials: YJ
authors.lastname: Cui
authors.affiliation: Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, National Engineering Lab. for Biomass Chemical Utilization, Key and Lab. on Forest Chemical Engineering, SFA, Nanjing, 210042, People's Republic of China.
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Rao
keywords: crystal structure; dehydroabietic acid derivative; oxime