Synthesis of 5-(substituted phenyl) 4-acetyl-2-methylthio-Δ<sup>2</sup>-1,3,4-thiadiazolines and their oxidation with potassium permanganate
作者:Seiju Kubota、Kouhei Toyooka、Junichi Ikeda、Naoya Yamamoto、Masayuki Shibuya
DOI:10.1039/p19830000967
日期:——
The reaction of aldehyde methylthio (thiocarbonyl) hydrazones (2) with acetic anhydride or acetyl chloride gave 5-(substituted phenyl) 4-acetyl-2-methylthio-Δ2-1,3,4-thiadiazolines (3). Oxidation of compounds (3) with potassium permanganate in acetic acid furnished 5-aryl-2-methylsulphonyl-1,3,4-thiadiazoles (4), 4-acetyl-5-aryl-2-methylsulphonyl-Δ2-1,3,4-thiadiazolines (5), and 4-acetyl-5-aryl-2-
醛甲硫基(硫代羰基)腙(2)与乙酸酐或乙酰氯反应,得到5-(取代苯基)4-乙酰基-2-甲硫基Δ 2 -1,3,4-噻二唑类(3)。在乙酸中用高锰酸钾(3)化合物的氧化配5-芳基-2-甲磺酰基-1,3,4-噻二唑(4),4-乙酰基-5-芳基- 2-甲基磺酰基Δ 2 -1,3- ,4-噻二唑类(5),和4-乙酰基-5-芳基- 2-甲基磺酰基Δ 2 -1,3,4-噻二唑啉1,1-二氧化物(6)。