Spatial arrangement of norbornanedicarboxylic acids N-arylimides
摘要:
The effect of substituents on the spatial arrangement of norbornane compounds was investigated. Norbornanedicarboxylic acids N-arylimides with OCH(3), Cl, NO(2) groups in the ortho-position of the aromatic ring form as conformational isomers with hindered rotation. The specific spatial isomerism is confirmed by the quantum-chemical calculations.
Under mechanochemical milling conditions, Diels-Alder cycloaddition of cyclopentadiene with maleic anhydride and maleimide derivatives proceeded very smoothly, affording endo-norbornenes exclusively in quantitative yield. All the transformations were accomplished at room temperature without using any catalyst or organic solvent, thus the workup and purification procedure is very simple. Control experiments on traditional and other tentative conditions were also investigated.
Spatial arrangement of norbornanedicarboxylic acids N-arylimides
作者:M. S. Salakhov、B. T. Bagmanov、N. S. Nabiev
DOI:10.1134/s1070428010110023
日期:2010.11
The effect of substituents on the spatial arrangement of norbornane compounds was investigated. Norbornanedicarboxylic acids N-arylimides with OCH(3), Cl, NO(2) groups in the ortho-position of the aromatic ring form as conformational isomers with hindered rotation. The specific spatial isomerism is confirmed by the quantum-chemical calculations.