Synthesis of new 2-aryl-4-chloro-3-hydroxy-1<i>H</i>-indole-5,7-dicarbaldehydes<i>via</i>Vilsmeier-Haack reaction
作者:Bagher Eftekhari-Sis、Maryam Zirak、Ali Akbari、Mohammed M. Hashemi
DOI:10.1002/jhet.338
日期:——
xy‐1H‐indole‐5,7‐dicarbaldehydes were synthesized in three steps from acetophenone derivatives. By oxidation of acetophenones to aryl glyoxals using selenium dioxide and condensation with acetylacetone in the presence of ammonium acetate in water 3‐acetyl‐5‐aryl‐4‐hydroxy‐2‐methyl‐1H‐pyrrols were obtained. 2‐Aryl‐4‐chloro‐3‐hydroxy‐1H‐indole‐5,7‐dicarbaldehydes were synthesized via Vilsmeier‐Haack
由苯乙酮衍生物分三步合成了新的2-芳基-4-氯-3-羟基-1 H-吲哚-5,7-二甲醛。通过使用二氧化硒将苯乙酮氧化为芳基乙二醛,并在乙酸铵存在下与乙酰丙酮缩合,制得3-乙酰基-5-芳基-4-羟基-2-甲基-1 H-吡咯。通过吡咯衍生物的Vilsmeier-Haack反应以中等收率合成了2-芳基-4-氯-3-羟基-1 H-吲哚-5,7-二甲醛。J.杂环化学。(2010)。