STUDIES ON THE SYNTHESIS OF HETEROCYCLIC COMPOUNDS. PART XII. PYRAZOLO-1,5-BENZODIAZOCINE-4,10-DIONE. A NEW RING SYSTEM

Article abstract of DOI:10.3987/COM-87-4261

Treatment of N-(1-R-4-carboxypyrazol-5-yl)-2-aminobenzamides 2b,e with thionyl chloride afforded new pyrazolo<3,4-d>-1,3-oxazinones 3b,e.When the amide group of compounds 2b,e was blocked pyrazolo<4,3-c>-1,5-benzodiazocine-4,10-diones 6a,d were obtained.