Reactions of 3-nitro-1,2,4-triazole derivatives with alkylating agents. 9.* Preparation of N(1)-, N(2)- and N(4)-ethyl-5-R-nitro-1,2,4-triazoles by the alkylation of 5-R-3-nitro-1,2,4-triazolate anions with diethyl sulfate
作者:G. T. Sukhanov、Yu. V. Filippova、A. G. Sukhanova
DOI:10.1007/s10593-012-1142-8
日期:2012.12
The product of substitution at the nitrogen atom N(4) is found along with main N(1)- and N(2)-substituted 5-R-3-nitro-1,2,4-triazoles among the products of 5-R-nitro-1,2,4-triazolate anion (R = H, Me, Et) reactions with diethyl sulfate in aqueous medium. The fraction of 5-R-4-ethyl-3-nitro-1,2,4-tri-azoles, which varies from 1.3 to 6.9%, depends on the temperature, ratio of the starting reagents, and the degree of the alkylating agent consumption.