4,5,6-tetrahydro-2H-1,2,4-triazepine-3-thiones and 4,5-dihydro-1H-pyrazole-1-carbothioamides are convenient methods for the synthesis of 7,8-dihydrothiazolo[3,2-b][1,2,4]triazepin-3-ones derivatives and methyl esters of (2Z)-[2-(4,5-dihydro-1H-pyrazol-1-yl)-4-oxo-1,3-thiazol-5(4H)-ylidene]acetic acids, respectively. The reaction of methyl propynoates with 4,5-dihydro-1H-pyrazole-1-carbothioamides or
乙炔甲酸二甲酯与3,4,5,6-tetrahydro-2 H -1,2,4-triazepine-3-thiones和4,5-dihydro-1 H-
吡唑-1-carbothioamides的反应是方便的方法7,8-二氢
噻唑并[3,2-合成b ] [1,2,4]三氮杂-3-酮衍
生物和(2Z)的甲酯- [2-(4,5-二氢-1 ħ -
吡唑1-基)-4-氧代-1,3-
噻唑-5(4 H)-亚烷基]
乙酸。
丙酸甲酯与4,5-二氢-1 H-
吡唑-1-碳
硫酰胺或与5,5,7-三甲基-2,4,5,6-四氢-3 H -1,2,4-三氮杂reaction的反应-3-
硫酮得到2-(4,5-二氢-1 H-
吡唑-1-基)-4H-
1,3-噻嗪-4-酮。