首页>
中文期刊>
《中国化学:英文版》
>Synthesis, Structure and Properties of Benzo1,2-P.5,4-f'- diquinoline Derivatives: A Remarkably Strong Intramolecular C-H...O Hydrogen Bond
Synthesis, Structure and Properties of Benzo1,2-P.5,4-f'- diquinoline Derivatives: A Remarkably Strong Intramolecular C-H...O Hydrogen Bond
A series of benzo[1,2-f:5,4-f']diquinoline derivatives were synthesized starting from 2,7-diaminoanthracene, and their structures were determined by NMR, MS spectra and X-ray analysis. They showed a remarkably strong intramolecular C--H...O hydrogen bond, which resulted in an unexpected downfield chemical shift of the aromatic proton in CDCl3. Moreover, a significant fluorescent change of molecule lb in the presence of trifluoroacetic acid (TFA) was also observed.
展开▼