Studies on the azidolysis of 4-arylidene and 4-alkylidene 5(4)-oxazolones. Part II

4-Alkylidene-5(4)-oxazolones ( 1 ) react with sodium azide in acetic acid in 5 min, or with hydrazoic acid m benzene to give the diazide 2 . The latter gives by thermolysis the oxadiazine ( 4 ), which forms on hydrolysis the diamide ( 5 ). The corresponding monoazides ( 3 ) react with sodium azide - acetic acid mixture to give the corresponding diazides.4-Arylidene-5(4)-oxazolones ( 8 ) react under the same conditions to give α-[tetrazolyl-(1)]-acryhc acid derivatives ( 9 ).The work of Deorha and Gupta (6) is reinvestigated. The constitution of the products is discussed chemically and spectroscopically.