Facile synthesis of spiro[indoline-3,3′-pyrrolo[1,2-a]quinolines] and spiro[indoline-3,1′-pyrrolo[2,1-a]isoquinolines] via 1,3-dipolar cycloaddition reactions of heteroaromatic ammonium salts with 3-phenacylideneoxindoles
作者:Lei Wu、Jing Sun、Chao-Guo Yan
DOI:10.1039/c2ob26849c
日期:——
in the corresponding spiro[indoline-3,1′-pyrrolo[2,1-a]isoquinoline] and spiro[benzo[h]pyrrolo[1,2-a]quinoline-3,3′-indoline] derivatives in good yields. The characterization data of spiro compounds and single crystal determination indicated that this 1,3-cycloaddition reaction is a regioselective and diastereoselective reaction and all prepared spiro compounds exist in the thermodynamically stable trans
通过N-苯甲酰基喹啉溴化物与3-苯并萘恶氧吲哚的1,3-偶极环加成反应有效地合成了一系列复杂的螺线[indoline-3,3'-pyrrolo [1,2- a ] quinolines] 。乙醇 和 三乙胺作为基础。在相似的条件下,N-苯甲酰基异喹啉鎓和N-苯甲酰基-1,10-菲咯啉鎓溴化物与3-苯邻二甲恶基吲哚的1,3-环加成反应生成相应的螺[吲哚啉-3,1'-吡咯并[2,1- a ]异喹啉]和螺[苯并[ h ]吡咯并[1,2 - a ]喹啉-3,3'-二氢吲哚]衍生物的收率很高。螺环化合物的表征数据和单晶测定表明,该1,3-环加成反应是区域选择性和非对映选择性反应,所有制备的螺环化合物均存在于热力学稳定的反式异构体中。