Synthesis and photochemical transformations of new butadiene chromophores: The influence of the nature and position of chlorine substituent on the photoinduced behaviour
作者:Dragana Vuk、Dalia Potroško、Marija Šindler-Kulyk、Željko Marinić、Krešimir Molčanov、Biserka Kojić-Prodić、Irena Škorić
DOI:10.1016/j.molstruc.2013.07.052
日期:2013.11
Abstract The photochemical behaviour of mono- and dichloro-substituted butadiene derivatives was studied at low concentrations. These compounds display diverse photochemical behaviour. The α -chloro derivatives photocyclize to give six-membered ring photoproducts. p -Chloro-substituted butadienes undergo intramolecular [2 + 2] cycloaddition followed by formation of benzobicyclic structures. The steric
摘要 研究了单氯和二氯取代丁二烯衍生物在低浓度下的光化学行为。这些化合物显示出不同的光化学行为。α-氯衍生物光环化得到六元环光产物。对氯取代的丁二烯进行分子内 [2 + 2] 环加成,然后形成苯并双环结构。相对于 p 取代和位移构象异构体平衡,α 位氯的空间位阻导致平面性的更大偏差,并影响反应途径和产率。