Synthesis and acid-base properties of bifunctional compounds based on 2-styrylquinoline and 6-hydroxynaphthalene-2-carboxylic acid
作者:T. N. Gavrishova、M. F. Budyka、N. I. Potashova、O. N. Karpov
DOI:10.1134/s1070428015060093
日期:2015.6
The reaction of 6-hydroxynaphthalene-2-carboxylic acid with 2-(E)-2-[4-(omega-bromoalkoxy)phenyl]-ethenyl}quinolines gave omega-4-[(E)-2-(quinolin-2-yl)ethenyl]phenoxy}alkyl 6-hydroxynaphthalene-2-carboxylates possessing both photoacid and photobase properties. The acidities of the naphthol fragment in the ground (pK (a)) and singlet excited states (pK (a)*) of 3-4-[(E)-2-(quinolin-2-yl)ethenyl]phenoxy}propyl 6-hydroxynaphthalene-2-carboxylate are pK (a) 9.0 and pK (a)* 2.4, and of the quinoline fragment, pK (a) 4.6, pK (a)* 12.6, respectively.