Cyanic Acid Esters. 29. Bezoxazoline-thione-N-imid Esters and Their Consecutive Reactions
Oxazoline-thiones-(2) and aryl cyanates react to form the corresponding isoureas 4.These compounds are remarkably stable against electrophilic reagents.The aminolysis of 4 proceeds two pathwais: a transformation of the imid ester residue to the amin and a ring opening reaction by attack of the amin to the C=S-bond.The hydrazinolysis causes a ring-transformation of the oxazoline- to the 1,3,4-triazole systems.
Martin, D.,Wenzel, A.
p. 253 - 260
(2007/10/02)
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