Expeditious synthesis of cis-1-methyl-2,3,3a,4,5,9b-hexahydro-1H-pyrrolo-[3,2h]isoquinoline/[2,3-f]quinoline via azomethine ylide-alkene [3+2] cycloaddition
作者:Zhenfa Zhang、Linda P. Dwoskin、Peter A. Crooks
DOI:10.1016/j.tetlet.2011.03.065
日期:2011.5
Expeditious syntheses of cis-1-methyl-2,3,3a,4,5,9b-hexahydro-1H-pyrrolo-[3,2h]isoquinoline/[2,3-f]quinoline have been developed. The syntheses started with commercially available materials and afforded excellent overall yields in straightforward steps. Intramolecular azomethine ylide-alkene [3+2] cycloaddition is the key step in the construction of these pyrroloisoquinoline and pyrroloquinoline scaffolds
的迅速合成顺式-1-甲基-2,3,3-一个,4,5,9 b -六氢- 1 H ^ -吡咯并[3,2 ħ ]异喹啉/ [2,3- ˚F ]喹啉得到了发展。合成从市售材料开始,并在简单的步骤中提供了极好的总产率。分子内偶氮甲碱叶立德-烯烃 [3+2] 环加成反应是构建这些吡咯并异喹啉和吡咯并喹啉支架的关键步骤。这条路线比文献中报道的路线更具原子经济性,适用于放大合成。