Synthesis of 3-Arylthieno[2,3-b]-, -[2,3-c]- or -[3,2-c]pyridines Utilizing an Interrupted Pummerer Reaction
作者:Kazuhiro Kobayashi、Teruhiko Suzuki、Mai Horiuchi、Yasuhiko Shiroyama、Hisatoshi Konishi
DOI:10.1055/s-0030-1260152
日期:2011.9
yl)pyridines, 4-(1-arylethenyl)-3-(ethylsulfinyl)pyridines, and 3-(1-arylethenyl)-4-(ethylsulfinyl)pyridines, which can be easily prepared from the respective aryl chloropyridinyl ketones in a three-step sequence, undergo an interrupted Pummerer reaction on treatment with excess acetic anhydride at temperatures ranging from 100 to 130 ˚C to give 3-arylthieno[2,3-b]pyridines, 3-arylthieno[2,3-c]pyridines
已经开发了合成三种类型的噻吩并吡啶的有效方法。因此,3-(1-芳基乙烯基)-2-(乙基亚磺酰基)吡啶,4-(1-芳基乙烯基)-3-(乙基亚磺酰基)吡啶和3-(1-芳基乙烯基)-4-(乙基亚磺酰基)吡啶可可以容易地由三步顺序的各个芳基氯吡啶基酮制备,在过量的乙酸酐中于100至130°C的温度下进行间歇Pummerer反应,得到3-芳基噻吩并[2,3- b ]吡啶, 3-芳基噻吩并[3,2- c ]吡啶和3-芳基噻吩并[3,2- c ]吡啶。 噻吩并[2,3- b ]吡啶-噻吩并[2,3- c ]吡啶-噻吩并[3,2- c ]吡啶-Pummerer反应中断-乙酸酐