Add time:09/02/2019         Source:sciencedirect.com

N-Acetonylation of 5(3)-(1H-tetrazol-1-yl)-3(5)-nitro-1H-pyrazole with bromoacetone in the presence of NaHCO3 at 60 °C gave, along with expected isomeric N-acetonyl derivatives, a tricyclic product of the intramolecular electrophilic attack at the carbon atom of the tetrazole cycle.

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