Parham-type cyclization and nucleophilic addition - N-acyliminium ion cyclization sequences for the construction of the isoquinoline nucleus
作者:M.Isabel Collado、Nuria Sotomayor、María-Jesús Villa、Esther Lete
DOI:10.1016/0040-4039(96)01321-4
日期:1996.8
Efficient methodologies based on the nucleophilic addition-N-acyliminium ion cyclization and the Parham-type cyclization sequences of N-phenethylimides 1 and 2 are reported for the synthesis of a variety of heterocyclic systems: benzo[a]quinolizidones and their 2-oxa analogs, isoindoloisoquinolones, dibenzo[a,h]quinolizidones, thiazolo-, oxazolo-, and imidazolo [4,3-a]isoquinolones.
据报道,基于亲核加成-N-酰基亚胺离子环化和N-苯乙基酰亚胺1和2的Parham型环化序列的有效方法学用于各种杂环系统的合成:苯并[a]喹啉并及其2-氧杂类似物,异吲哚异喹诺酮类,二苯并[a,h]喹诺酮,噻唑-,恶唑-和咪唑并[4,3-a]异喹啉。