2-Acyl(aroyl)-1,1,3,3-tetracyanopropenides: III. Heterocyclization by the action of hydrogen halides
作者:S. V. Karpov、Ya. S. Kayukov、I. N. Bardasov、O. V. Kayukova、K. V. Lipin、O. E. Nasakin
DOI:10.1134/s107042801110006x
日期:2011.10
2-Acyl(aroyl)-1,1,3,3-tetracyanopropenides reacted with hydrogen halides along two concurrent pathways with formation of furan or pyridine derivatives. The reaction in butan-2-ol afforded 2-amino-4-acyl-(aroyl)-6-halopyridine-3,5-dicarbonitriles, whereas the major products in the reactions with HCl and HBr in aqueous solution were the corresponding 2-(5-amino-2-aryl-2-chloro(bromo)-4-cyano-2,3-dih
2-酰基(芳酰基)-1,1,3,3-四
氰基
丙烯化物与卤化氢沿着两条同时的途径反应生成
呋喃或
吡啶衍生物。在
丁烷-2-醇中的反应提供了2-
氨基-4-酰基-(芳酰基)-6-卤代
吡啶-3,5-二碳腈,而与HCl和HBr的
水溶液反应的主要产物是相应的2- (5-
氨基-2-芳基-2-
氯(
溴)-4-
氰基-
2,3-二氢呋喃-3-亚烷基)
丙二腈。与
碘化氢
水溶液的反应伴随有还原性脱
碘作用,并产生了2-(5-
氨基-2-芳基-4-
氰基-
2,3-二氢呋喃-3-亚烷基)
丙二腈。