An efficient strategy for the preparation of a novel structural variant of imidazoquinazolines with three-point diversity has been described. The compounds were obtained by treating benzil with o-nitrobenzaldehyde to give imidazoles, followed by reduction of the nitro group to give an aryl amine. Condensation-cyclization of the resulting intermediate with isothiocyanates in the presence of DBU for 45 minutes at room temperature furnished the title compounds in high yields and purities.
已描述了一种制备具有三点多样性的新型
咪唑喹啉结构变体的有效策略。这些化合物是通过将苯基甲酮与
邻硝基苯甲醛反应得到
咪唑类化合物,然后还原硝基团生成芳香胺。将生成的中间体与异
硫氰酸酯在
DBU存在下,在室温下反应45分钟,获得了高产率和高纯度的目标化合物。