Synthesis of [1,2,3]Triazolo[1,5-a]Pyrazinium-3-Olates*
摘要:
4-Carbamoyl-3-cyanomethyl-1,2,3-triazolium-5-olates were shown to cyclize when treated with sodium ethoxide giving zwitterionic 6-amino-4-oxo-4,5-dihydro-2De-1,2,3-triazolo[1,5-D degrees]pyrazinium-3-olates. In contrast to 4-carbamoyl-3-cyanomethyl-1,2,3-triazolium-5-olates, 4-carbamoyl-3-phenacyl-1,2,3-tri-azolium-5-olates cyclized only by the action of phosphoric acid.
Synthesis of 1-Substituted 3-Alkyl-1,2,3-triazol-3-ium-5-olates
摘要:
Alkylation of 1-substituted sodium 1,2,3-triazol-5-olates with halogen derivatives occurs at the nitrogen atom in position 3 of the heteroring to give zwitterionic 1,2,3-triazol-3-ium-5-olates.