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Communication | Regular issue | Vol 6, No. 11, 1977, pp.1767-1771
Published online, 1st January, 1970
DOI: 10.3987/R-1977-11-1767
1,4(2H,5H)-Dioxoimidazo[1,5,4-h,i]indazoline: A New Heterocyclic Ring System

Roy L. Williams,* Anna Ciereszko, Fran Morandini, and Gretchen Williams

*Department of Chemical Sciences, Old Dominion University, Norfolk, Virginia 23508, U.S.A.


Thermolysis or photolysis of isatoic acid azide (3) in non-nucleophilic solvents gives rise to a novel rearrangement product which has been described as the 1,4(2H,5H)-dioxoimidazo[1,5,4-h,j]indazoline (8).