Synthesis and reactions of 4-benzoyl-1,5-diaryl-1<i>H</i>-pyrazole-3-carbonyl chlorides with various semi- and thiosemicarbazides
作者:Elif Korkusuz、Ismail Yıldırım
DOI:10.1002/jhet.306
日期:——
1H‐pyrazole‐3‐carboxylic acids 2 were converted via reactions of their acid chlorides 3 with some semi‐ and thiosemicarbazide derivatives into the corresponding new phenylsemi‐ and thiosemicarbazides 4a, 4b, 4c, 4d, 4e, 6, 5‐(pyrazol‐3‐yl)‐4H‐1,2,4‐triazol‐3‐thiones 5a, 5b, and 2‐(pyrazol‐3‐yl)‐1,3,4‐thiadiazol 7 derivatives, in good yields (45‐97%, respectively). The reactions of 4a,4c,4e with Lawesson reagent lead
1个ħ吡唑-3-羧酸2分别通过其酰氯的反应转化3与一些半和氨基硫脲衍生物为相应的新phenylsemi-和氨基硫脲图4a,图4b,图4c,图4d,图4e,6,5-(吡唑-3-基)-4 - H -1、2,4-三唑-3-硫酮5a,5b和2-(吡唑-3-基)-1,3,4-噻二唑7衍生物,收率高( 45-97%)。4a ,4c ,4e与Lawesson的反应试剂导致产物6和7形成。这些新合成的化合物的结构由IR,1 H-和13 C-NMR光谱数据和元素分析确定。J.杂环化学。(2010)。