Et. Apasov et al., NITRAMINOMETHYLATION OF SILYLATED POLYNITROGEN HETEROCYCLIC-COMPOUNDSIN NONAQUEOUS SOLUTIONS, Russian chemical bulletin, 42(9), 1993, pp. 1604-1605
Trimethylsilyloxy derivatives of 1,2,4-triazole, 3(5)-nitro-1,2,4-tria
zole, and tetrazole are inert toward 2-nitro-1-trimethylsilyloxy-2-aza
propane, but they react with 1-chloro-2-nitro-2-azapropane to give the
corresponding nitraminomethyl derivatives. Silylated 1,2,4-triazole u
ndergoes bis-nitraminomethylation to give a triazolium salt.