2-Acylfurans can be converted directly into 2-substituted 3-hydroxypyridines by heating them with ammonia; 2-acylpyrroles and 3-aminopyridines are formed as byproducts in this rearrangement. Using propylamine in place of ammonia, 1-(2-furyl)-5-methylhex-5-en-1-one (8) could be rearranged to give the aza-bridged perhydroazulenone (5-methyl-10-oxo-11-propyl-11-azatricyclo-[5.3.1.01,5]undec-8-ene, 10).
2-酰基
呋喃与
氨加热后,可以直接转化为2-取代3-
羟基吡啶;2-酰基
吡咯和3-
氨基吡啶是这种重排反应的副产物。用
丙胺代替
氨,1-(2-
呋喃基)-5-甲基-5-己烯-1-酮(8)可以重排为氮桥全氢化
吖啶酮(5-甲基-10-氧代-11-丙基-11-氮杂
三环-[5.3.1.01,5]十一碳-8-烯,10)。