Copper–phenanthroline catalysts for regioselective synthesis of pyrrolo[3′,4′:3,4]pyrrolo[1,2-<i>a</i>]furoquinolines/phenanthrolines and of pyrrolo[1,2-<i>a</i>]phenanthrolines under mild conditions
作者:Rupankar Paira、Tarique Anwar、Maitreyee Banerjee、Yogesh P Bharitkar、Shyamal Mondal、Sandip Kundu、Abhijit Hazra、Prakas R Maulik、Nirup B Mondal
DOI:10.3762/bjoc.10.62
日期:——
A new series of pyrrolo[3',4':3,4]pyrrolo[1,2-a]furoquinolines/phenanthrolines and pyrrolo[1,2-a]phenanthrolines were efficiently built up from an 8-hydroxyquinoline derivative or phenanthroline via 1,3-dipolar cycloaddition reaction involving non-stabilized azomethine ylides, generated in situ from the parent furo[3,2-h]quinoliniums/phenanthroliums, in presence of a copper(II) chloride-phenanthroline
一系列新的吡咯并[3',4':3,4]吡咯并[1,2-a]呋喃喹啉/菲咯啉和吡咯并[1,2-a]菲咯啉从8-羟基喹啉衍生物或菲咯啉通过1,3-偶极环加成反应涉及不稳定的偶氮甲碱叶立德,在氯化铜 (II)-菲咯啉催化体系存在下,由母体呋喃 [3,2-h] 喹啉鎓/菲咯鎓原位生成。该方法结合了普遍适用性和高产量。