Criss-cross Cycloadditions on Ketazines Derived from Alicyclic Ketones
Received: 3 August 2004 / Revised: 20 December 2005 / Accepted: 20 December 2005 / Published: 31 January 2006
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The reactivity of alicyclic ketazines in criss-cross cycloadditions was investigated. They react with potassium cyanate and ammonium thiocyanate in the presence of acetic acid to form spirocyclic perhydro[1,2,4]triazolo[1,2-a][1,2,4]triazole-1,5-diones and perhydro[1,2,4]triazolo[1,2-a][1,2,4]triazole-1,5-dithiones, respectively, in relatively high yields.