title: [Synthesis and spectral characterization of a novel fluorescent functional monomer 2,4-dimethyl-7-acrylamine-1,8-naphthyridine].
abstract: A new fluorescent functional monomer DMAAN has been designed and synthesized for the first time. The monomer was expected to bind with cytosine via complementary hydrogen bonding under certain experimental conditions. The synthetic procedure of DMAAN is as follows. A suspension of 2,6-diaminopyridine in phosphoric acid was added to acetylacetone. The mixture was warmed for thirty minutes on a steam-bath. Then 2,4-dimethyl-7-amino-1,8-naphthyridine(DMAN, mp 216-218 degrees C) was obtained. DMAAN was prepared by the reaction of DMAN with acryloyl chloride in chloroform and triethylether mixed solvent. Acryloyl chloride in anhydrous chloroform was added dropwise over 30 minutes with constant stirring at 4 degrees C. The melting point of the final product was 239-241 degrees C. Mass spectrometry and proton NMR were used to confirm the chemical structure of DMAN and DMAAN. The products were also characterized by UV and fluorescence spectrometry.
authors.affiliation: School of Science, Beijing Institute of Technology, Beijing.
authors.forename: Yan-mei
authors.initials: YM
authors.lastname: Zhou
authors.forename: Wen-guo
authors.initials: WG
authors.lastname: Xu
authors.forename: Ai-jun
authors.initials: AJ
authors.lastname: Tong
authors.forename: Chun-yuan
authors.initials: CY
authors.lastname: Tong