1.3.4- Oxadiazolines diazo compounds

Although formally the product of 1,4-addition of the carbene to the ADC 4n unit, 1,3,4-oxadiazolines probably arise via initial nucleophilic attack of the diazo compound to give, after loss of N2, a dipolar intermediate. This intermediate azomethine imine can collapse directly to give the oxadiazoline,... 

Oxadiazolines, formation by treatment of azo compounds with aliphatic diazo compounds 80ZC172. 

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