Cyclizations of 1,2,4-triazinium salts with bifunctional nucleophiles - a new route to condensed 1,2,4-triazines
作者:S.G. Alexeev、V.N. Charushin、O.N. Chupakhin、G.G. Alexandrov
DOI:10.1016/s0040-4039(00)80316-0
日期:1988.1
The reaction of 1,2,4-triazinium salts with amides of acetoacetic acid yielding 1,4,4a,5,7,7a-hexahydro-6H-pyrrolo[3,2-e]-1,2,4-triazin-6-ones exemplifies the first direct annelation to the 1,2,4-triazine ring based on the diaddition of bifunctional nucleophiles at C-5 and C-6.
1,2,4-三嗪鎓盐与乙酰乙酸酰胺的反应生成1,4,4a,5,7,7a-六氢-6H-吡咯并[3,2-e] -1,2,4-三嗪- 6-ones例示了基于双官能亲核试剂在C-5和C-6上的双加成反应,首次直接与1,2,4-三嗪环成环。