The investigations in 2,3′-biquinoline series. 25*. Synthesis of 4-(2-quinolinyl)-pyrrolo[1,2-a]quinolines and 4-(2-quinolyl)-imidazo[1,2-a]quinolines
作者:T. P. Glushchenko、A. V Aksenov、V. I. Goncharov
DOI:10.1007/s10593-009-0267-x
日期:2009.3
A method has been developed for the synthesis of 4-(2-quinolinyl)-1,2,3,3a-tetrahydropyrrolo-[1,2-a]quinolines based on the 1,3-dipolar cycloaddition reaction of α,β-unsaturated carbonyl compounds to 2,3′-biquinolinium salts. Oxidation in benzene using MnO2 gave 4-(2-quinolinyl)-pyrrolo[1,2-a]quinolines. It was found that a side product of the 1,3-dipolar cycloaddition is 7,14-di-benzoyl-6,13-di(2-quinolyl)-6a
基于α,β-的1,3-偶极环加成反应,开发了一种合成4-(2-喹啉基)-1,2,3,3a-四氢吡咯并-[1,2- a ]喹啉的方法。 2,3'-联喹啉鎓盐的不饱和羰基化合物。用MnO 2在苯中氧化得到4-(2-喹啉基)-吡咯并[1,2- a ]喹啉。发现1,3-偶极环加成的副产物为7,14-二苯甲酰基-6,13-二(2-喹啉基)-6a,7,13a,14-四氢-7a,14a-二氮杂二苯并[ a,h ]蒽。1'-苯甲酰基-2,3'-联喹啉鎓盐与羟胺在乙酸中的反应得到4-(2-喹啉基)咪唑基-[1,2- a ]喹啉。