4-Nitro-1,2,3-triazoles from nitro-αβ-unsaturated gem-diamines

The reaction of aroyl-substituted heterocyclic ketene aminals with aryl azides

“…calcd for C 18 H 15 ClFN 5 : C,60.76;H,4.25;N,19.69. Found: C,60.56;H,4.34;N, [1,2,3] Anal. calcd for C 9 H 8 N 4 O 2 : C,52.94;H,3.95;N,27.44.…”

“…Found: C,52.54;H,3.97;N, [1,2,3] 3-(p-Fluorobenzoyl )-5,6-dihydro-4H-imidazo [1,2-c] [1,2,3] 3.91;N,24.13. Found: C,56.94;H,4.15;N,5,6,2,3]triazolo- [1,5-a] ,4.62;N,25.68. Found: C,55.04;H,4.63;N,5,6,2,3]triazolo [1,5-a] (79), 190 (29).…”

“…Thus, the synthesis and reactions of heterocyclic ketene aminals have attracted much attention [1]. The reactions of heterocyclic ketene aminals with 1,3-dipolar reagents, such as azides [2][3][4][5][6][7], nitrile imines [8,9], benzonitrile oxide [10,11] or its precursor [12], have been reported. To continue our studies, we report here the results of the reactions of heteroatom aroyl-substituted ketene aminals with aryl azides.…”

Synthesis of ribosylated 1,2,3‐triazole derivatives

“…The reactions of heterocyclic ketene aminals with 1,3-dipolar reagents, such as azides [3][4][5][6][7][8][9][10][11], nitrile imines [12,13], benzonitrile oxides [14,15], or its precursor [16,17], have been reported. A series of polysubstituted 1,2,3-triazoles have been synthesized by the reaction of heterocyclic ketene aminals with azides, and when glucopyranosyl azide was used, a kind of glucosylated 1,2,3-triazole derivatives were obtained [9,11] which were found to be biologically active [18].…”

The reaction of heteroaroyl‐substituted heterocyclic ketene aminals with 2,3,4,6‐tetra‐O‐acetyl‐β‐D‐glucopyranosyl azide

“…The reaction of heterocyclic ketene aminals with 1,3-dipolar reagents, such as an azide [2][3][4][5][6][7][8][9], a nitrile imine [10,11], benzonitrile oxide [12,13], or its precursor [14,15] have been reported. To continue our studies, we decided to explore the reaction of heteroaroyl-substituted hete-rocyclic ketene aminals with 2,3,4,6-tetra-O-acetyl-␤-D-glucopyranosyl azide and to obtain bioactive compounds.…”