1,2,4-Triazines,<b>9.</b>The synthesis of novel 4-amino-1,6-dihydro-1,2,4-triazinones
作者:Masato Mizutani、Yuzuru Sanemitsu
DOI:10.1002/jhet.5570220104
日期:1985.1
3-Alkylthio-4-amino-1,6-dihydro-1,2,4-triazin-5(4H)-ones were synthesized by the reduction of 3-thio-4-amino-1,2,4-triazine-3,5(2.H,4H)-diones and successive S-alkylation. The regiospecific alkylation on the N-1 position or the exo amino group leads to a variety of 1,6-dihydro-1,2,4-triazin-5(4H)-one derivatives. An alternative synthesis of 3-thio-4-amino-1,6-dihydro-1,2,4-triazine-3,5(2H,4H)-diones
通过还原3-硫代-4-氨基-1,2,4-三嗪合成3-烷基硫代-4-氨基-1,6-二氢-1,2,4-三嗪-5(4 H)-。 -3,5-(2。ħ,4 ħ) -二酮和连续小号烷基化。N-1位置或外氨基上的区域特异性烷基化反应会生成各种1,6-二氢-1,2,4-三嗪-5(4 H)-one衍生物。通过1-硫代碳酰肼基乙酰胺衍生物的环化,完成了3-硫代-4-氨基-1,6-二氢-1,2,4-三嗪-3,5(2 H,4 H)-二酮的替代合成。