Synthesis and photochromism of a series of new 2-unsubstituted 3-(2-benzylbenzoyl)quinolin-4(1H)-ones
作者:Nina A. Larina、Vladimir Lokshin、Jerome Berthet、Stephanie Delbaere、Gaston Vermeersch、Vladimir Khodorkovsky
DOI:10.1016/j.tet.2010.08.039
日期:2010.10
Synthesis and characterization of a series of new 2-unsubstituted 3-(2-benzylbenzoyl)quinolin-4(1H)-ones is described. In addition to their potential biological activity, these compounds exhibit photoreversible photochromic properties in anaerobic conditions. Using the 1 and 2D NMR techniques we demonstrated that the coloration occurred owing to the formation of fluorescent 5a,6-dihydrobenzo[b]acridin-(5H)-ones
描述了一系列新的2-未取代的3-(2-苄基苯甲酰基)喹啉-4(1 H)-ones的合成和表征。这些化合物除了具有潜在的生物活性外,在厌氧条件下还具有光可逆的光致变色特性。使用1D和2D NMR技术,我们证明了由于荧光5a,6-二氢苯并[b] ac啶酮- (5 H)-ones的形成而发生了显色。光反应是立体选择性的,S,R-异构体是主要产物(83%),而S,S-异构体是次要产物(6%)。此外,不可逆地形成了两个氧化产物3-(2-苯甲酰基苯甲酰基)喹啉-4(1 H)和acridin-12(5 H)-one衍生物在空气中被观察到。