1-Nitrobenzotriazole-2-(nitroimino)diazobenzene isomerization: formation of triazenes by azo coupling with cyclic amines. Structure determination and dynamic NMR

La copulation azoique conduit aux piperidinoazo-2-, pyrrolidinoazo-2- et morpholinoazo-2 N-oxy benzenediazoates de piperidinium, pyrrolidinium ou morpholinium