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FACILE ONE-POT SYNTHESIS OF N-FUSED 1,2,4-TRIAZOLES via OXIDATIVE CYCLIZATION USING MANGANESE DIOXIDE

Ashish Bhatt, Rajesh K. Singh, Ravi Kant
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Abstract


A facile one-pot synthesis of N-fused 1,2,4-triazoles from heterocyclic hydrazines and aldehydes is reported. The reaction is efficiently promoted by manganese dioxide to afford the desired products mostly in high yields and in relatively short times. The mild nature of the synthesis, cheap oxidizing agent, and short reaction time are notable advantages of the developed protocol. This protocol is effective toward various substrates having different functionalities.

Keywords


manganese dioxide; toluene; 1,2,4-triazole; [1,2,4]triazolo[4,3-a]pyrazine; [1,2,4]triazolo[4,3-b]pyridazine; [1,2,4]triazolo[4,3-a]pyridine; [1,2,4]triazolo[4,3-a]pyrimidine

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