Novel Intermolecular Heterocycle Exchange Reaction of Cyclohepta[<i>b</i>][1,4]benzoxazines and Their<i>S</i>-Analogs with 1,2-Bifunctional Reagents
作者:Tetsuo Nozoe、Kimio Shindo、Sumio Ishikawa
DOI:10.1246/cl.1988.1593
日期:1988.10.5
The benzoxazine and the benzothiazine moieties of cyclohepta[b][1,4]benzoxazines and their S-analogs were easily exchanged with o-aminobenzenethiol, o-phenylenediamine and other related 1,2-bifunctional reagents in ethanol. The exchange of the two fused heterocycles of a tropylium compound is also described.