(Z)- and (E)-Arylidene-1,3-dihydroindol-2-ones: configuration, conformation, and infrared carbonyl stretching frequencies
作者:Andreina Corsico Coda、Anna Gamba Invernizzi、Pier Paolo Righetti、Gianfranco Tacconi、Giuseppina Gatti
DOI:10.1039/p29840000615
日期:——
The configuration and conformation of both (Z)- and (E)-arylidene-1,3-dihydroindol-2-ones were investigated. In the solid state the Z-isomer is planar whereas the E-isomer has the aryl group significantly twisted, as shown by two X-ray structures. A linear correlation was found between (co) and the σp+ of the substituents and this allows the conformation in solution and the degree of conjugation of
研究了(Z)-和(E)-亚芳基-1,3-二氢吲哚-2-酮的构型和构象。在固态下,Z-异构体是平面的,而E-异构体的芳基明显扭曲,如两个X射线结构所示。发现(c o)与取代基的σp +之间存在线性关系,这可以推断溶液中的构象以及Ar–C C–C O系统的共轭程度。