Design, synthesis, crystal structure and DFT analysis of (E)-N-(tert-butyl)-11H-benzo[4,5]imidazo[2,1-a]isoindol-11-imines with dual-state emission property
作者:Si-Yu Hou、Xu Wang、Jin-Ping Fu、Quan Liu、Wen-Yi Huang、Hao Cheng、Li Zhang、Guang-Ming Liang、Shou-Feng Zhang
DOI:10.1016/j.molstruc.2023.137217
日期:2024.3
photo-fluorescence, 1H and 13C NMR and HMRS. Furthermore, the single crystal structure of compound 3aa was determined to be of monoclinic system, space group I2/a, with α = 17.0080(4), b = 5.89820(10), c = 29.3286(7) Å, β = 102.948(2)°, V = 2867.34(11) Å3, Dc = 1.276 g/cm3, Z = 8, F(000) = 1168.0, μ(Cu Kα) = 0.599 mm−1, R = 0.0373 and wR = 0.0961. Photophysical property tests demonstrated that the designed benzoimidazoisoindoles
苯并咪唑异吲哚是关键的结构基序,广泛存在于药物和功能材料中。然而,苯并咪唑异吲哚的合成策略很少,这极大地限制了其应用。在此,我们报道了一种通过钯催化的 2-(2-溴苯基)-1 H-苯并[ d ]咪唑和异氰化物串联环化合成苯并咪唑异吲哚衍生物的有效方法。在空气气氛和100℃下制备了各种苯并咪唑异吲哚,产率为63%-86%。通过紫外-可见光、荧光、1 H 和13 C NMR 以及 HMRS 对苯并咪唑异吲哚进行了表征。此外,确定化合物3aa的单晶结构为单斜晶系,空间群I2/a,α = 17.0080(4),b = 5.89820(10),c = 29.3286(7) Å,β = 102.948( 2)°,V = 2867.34(11) Å 3,D c = 1.276 g/cm 3 ,Z = 8,F(000) = 1168.0,μ (Cu Kα) = 0.599 mm −1,R = 0.0373