作者:Anitha Hari、Benjamin L. Miller
DOI:10.1021/ol006580m
日期:2000.11.1
[GRAPHICS]The benzothiazine nucleus is a relatively unexplored class of compounds, from the standpoint of both synthetic chemistry and biological activity. We have developed a rapid, high yielding synthesis of benzothiazines in which a precursor aryl thiourea is prepared on solid phase, Addition of trifluoroacetic acid catalyzes a conjugate addition reaction to form the desired heterocycle and releases it from the resin.