Synthesis and Photochemistry of ?,??-Di(2-furyl)-Substitutedo-Divinylbenzenes: Intra- and/or Intermolecular Cycloaddition as an Effect of Annelation
作者:Irena ?kori?、Nikola Basari?、?eljko Marini?、Aleksandar Vi?njevac、Biserka Koji?-Prodi?、Marija ?indler-Kulyk
DOI:10.1002/chem.200401005
日期:2005.1.7
at various concentrations; intramolecular photocycloaddition and intermolecular [2+2] twofold photoaddition reactions took place to give bicyclo[3.2.1]octadiene derivatives 12-14 and cyclophane derivatives 15-17, respectively. Compound 11 was the most selective of these o-divinylbenzenes, which, owing to pi-pi intra- or intermolecular complexation, gave only the exo-bicyclo[3.2.1]octadiene derivative
新的杂芳基取代的邻二乙烯基苯,2,2'-(1,2,苯基二亚乙烯基)二呋喃(9),2,2'-(1,2,苯基二亚乙烯基)双苯并[b]呋喃(10)和2,2制备了'-(1,2-苯撑亚乙烯基)双萘并[2,1-b]呋喃(11),并以不同的浓度进行了辐照;发生分子内光环加成和分子间[2 + 2]两次光加成反应,分别得到双环[3.2.1]辛二烯衍生物12-14和环烷衍生物15-17。化合物11是这些邻二乙烯基苯中选择性最高的化合物,由于pi-pi分子内或分子间的络合作用,仅在低浓度下仅给出exo-bicyclo [3.2.1] octadiene衍生物14,而在环戊二烯衍生物17仅给出高浓度。