prepare intermediate N-aminopyridinium mesylates using mesytelenesulfonyl hydroxmate (MSH) as aminating agent. N-aminopyridinium mestylates reacted with appropriately substituted acyl chlorides to form N-ylides as stable crystalline solids. Partial reduction of N-ylides with mild reducing agent afforded N-benzoylamino-1,2,3,6-tetrahydropyridines in fair to good yields.
N-苯甲酰基
氨基-
1,2,3,6-四氢吡啶9a-q由4个取代的
吡啶合成。使用间苯二甲磺酰基异羟
肟酸酯(MSH)作为胺化剂,进行
吡啶的胺化以制备中间体N-
氨基吡啶基
甲磺酸盐。N-
氨基吡啶甲磺酸盐与适当取代的酰
氯反应生成N-酰化物,为稳定的结晶固体。用温和的还原剂部分还原N-烷基化物,以公平至良好的收率得到N-苯甲酰基
氨基-
1,2,3,6-四氢吡啶。