INVESTIGATION OF BISHETERYL DERIVATIVES O F PIPERAZINE AND ITS ANALOGS .1. SYNTHESIS AND TRANSFORMATIONS OF N,N'-BIS(2-R-5-NITROPYRIMIDYL-6)PIPERAZINES AND -BIS(2-R-5-NITROPYRIMIDYL-6)DISPYROTRIPIPERAZINIUM DICHLORIDE
Va. Makarov et al., INVESTIGATION OF BISHETERYL DERIVATIVES O F PIPERAZINE AND ITS ANALOGS .1. SYNTHESIS AND TRANSFORMATIONS OF N,N'-BIS(2-R-5-NITROPYRIMIDYL-6)PIPERAZINES AND -BIS(2-R-5-NITROPYRIMIDYL-6)DISPYROTRIPIPERAZINIUM DICHLORIDE, Himia geterocikliceskih soedinenij, (7), 1994, pp. 971-975