论文部分内容阅读
以β-萘酚经亚硝化反应得到中间体1-亚硝基-2-萘酚;以苯肼、3-甲基-2-丁酮为原料合成得到2,3,3-三甲基-3H-吲哚,经碘甲烷季铵盐化后在碱性条件下与1-亚硝基-2-萘酚反应得到1,3,3-三甲基吲哚啉螺萘并口恶嗪光致变色化合物。通过1H NMRI、R和元素分析确证了中间体和目标分子的结构;讨论了温度对1-亚硝基-2-萘酚合成的影响、制备吲哚季铵盐时溶剂的选择以及目标化合物的合成与光致变色机理。目标化合物的甲醇溶液经紫外光照射后由无色变为淡兰色,显示了良好的光致变色性能。
N-nitroso-2-naphthol was obtained by nitrosation reaction of β-naphthol, and 2,3,3-trimethyl-2-butanone was synthesized from phenylhydrazine and 3-methyl- 3H-indole, quaternized with methyl iodide and reacted with 1-nitroso-2-naphthol under basic conditions to give 1,3,3-trimethylindoline spiro naphthaline Color-changing compounds. The structures of intermediates and target molecules were confirmed by 1H NMRI, R and elemental analysis. The effects of temperature on the synthesis of 1-nitroso-2-naphthol, the choice of solvents for the preparation of indole quaternary ammonium salts, Synthesis and photochromic mechanism. The methanol solution of the target compound changed from colorless to light blue after being irradiated with ultraviolet light, showing good photochromic properties.