Synthesis of Alkyl and Aryl Substituted Benzo[<i>h</i>]Naphtho[1,2-<i>b</i>][1,6]naphthyridines
作者:K. Prabha、K. J. Rajendra Prasad
DOI:10.1080/00397911.2011.555649
日期:2012.8.1
neat conditions yielded 2-methyl-N-(1-naphthyl)quinolin-4-amines. These potential intermediates on reaction with aliphatic and aromatic carboxylic acids yielded the respective 7-alkyl and -aryl substituted benzo[h]naphtho[1,2-b][1,6]naphthyridines. The highly deshielded protons in the final compounds were assigned on the basis of 2D NMR studies. GRAPHICAL ABSTRACT
Abstract Distinction of benzo[h]naphtho[1,2-b][1,6]naphthyridine and its isomeric benzo[b]naphtho[1,2-h][1,6]naphthyridine is well explained on the basis of various spectroscopic techniques. Initially these isomers were prepared from their respective chloroquinolines via anilinoquinolines as potential intermediates. Spectroscopic dissimilarities of their precursors and intermediates have also been