Synthesis and photophysical properties of 1, 4-disubstituted naphthyloxymethyl-N-alkyl naphthimido-1,2,3-triazole
作者:J RAMCHANDER、N RAMESHWAR、T SHESHASHENA REDDY、GAJULA RAJU、A RAM REDDY
DOI:10.1007/s12039-014-0677-x
日期:2014.7
Regioselective synthesis of a series of 1,4-disubstituted of naphthoxymethyl-N-alkyl naphthalimide-1,2,3-triazoles employing click reaction is presented. Highly selective and efficient copper(I)-catalysed 1,3-dipolar cyclo addition between 1-naphthylpropargylic ether and azido alkyl naphthalimides yielded the title compounds in 74% to 94%. The structure of all the new 1,2,3-triazoles was characterized by 1HNMR, 13C NMR, IR and Mass. The electronic absorption and emission studies revealed that the light absorbing and emitting chromophore is the naphthoxy moiety. There is no extensive delocalization of aromatic π-electrons in the active chromophore which exhibited lower quantum yields and lower Stokes shifts.
呈现了一系列1,4-二取代的萘醇甲基-N-烷基萘二胺-1,2,3-三唑的区域选择性合成,采用点击反应。通过1-萘基丙炔醇醚与叠氮烷基萘二胺之间的高选择性和高效能的铜(I)催化1,3-偶极环加成反应,获得了目标化合物,产率在74%到94%之间。所有新合成的1,2,3-三唑的结构通过1H NMR、13C NMR、红外光谱和质谱进行表征。电子吸收和发射研究表明,光吸收和发射的色素基团是萘氧基。活性色素中没有广泛的芳香π电子的离域,导致较低的量子产率和较低的斯托克斯位移。