FeCl<sub>3</sub>-Catalyzed synthesis of pyrrolo[1,2-a]quinoxaline derivatives from 1-(2-aminophenyl)pyrroles through annulation and cleavage of cyclic ethers
作者:Zhenyu An、Lianbiao Zhao、Mingzhong Wu、Jixiang Ni、Zhenjie Qi、Guiqin Yu、Rulong Yan
DOI:10.1039/c7cc07089f
日期:——
1-(2-aminophenyl)pyrroles and cyclic ethers, which includes functionalization of C(sp3)-H bonds and the construction of C–C and C–N bonds, has been developed. The features of this reaction are Fe catalysis, low-cost and readily accessible starting materials. Moreover, this procedure exhibits good functional group tolerance and a series of pyrrolo[1,2-a]quinoxaline derivatives are obtained in moderate to good
一种直接的铁催化从1-(2-氨基苯基)吡咯和环醚合成吡咯并[1,2- a ]喹喔啉的方法,包括C(sp 3)-H键的官能化和C–的构建已经开发了C和C–N键。该反应的特征是铁催化,低成本和易于获得的起始原料。此外,该方法表现出良好的官能团耐受性,并且以中等至良好的产率获得了一系列吡咯并[1,2- a ]喹喔啉衍生物。
Lewis Acid-Catalyzed Selective Synthesis of Diversely Substituted Indolo- and Pyrrolo[1,2-a]quinoxalines and Quinoxalinones by Modified Pictet-Spengler Reaction
作者:Akhilesh K. Verma、Rajeev R. Jha、V. Kasi Sankar、Trapti Aggarwal、Rajendra P. Singh、Ramesh Chandra
DOI:10.1002/ejoc.201101013
日期:2011.12
An efficient tandem process for the selectivesynthesis of 1,2-annulated α-fused quinoxalines using benzotriazole methodology by a modifiedPictet–Spenglerreaction is described. The approach involves the reaction of arylamines 4 with aromatic aldehydes 5 to furnish 6-endo-dig-cyclized products. Dihydroquinoxalines 6 were selectively obtained by using AlCl3 in tetrahydrofuran (THF) at room temperature
Copper-catalyzed tandem aerobic oxidative cyclization for the synthesis of 4-cyanoalkylpyrrolo[1,2-<i>a</i>]quinoxalines from 1-(2-aminophenyl)pyrroles and cyclobutanone oxime esters
作者:Zhenyu An、Yong Jiang、Xin Guan、Rulong Yan
DOI:10.1039/c8cc06256k
日期:——
A copper-catalyzed tandem ring-opening/cyclization reaction for the synthesis of 4-cyanoalkylpyrrolo[1,2-a]quinoxalines from 1-(2-aminophenyl)pyrroles and cyclobutanone oxime esters has been developed. This reaction involves C–C bond cleavage and C–C and C–N bond constructions with good functional group tolerance. A wide range of products are obtained in moderate to good yields under mild conditions
已开发了一种铜催化串联开环/环化反应,用于由1-(2-氨基苯基)吡咯和环丁酮肟酯合成4-氰基烷基吡咯并[1,2- a ]喹喔啉。该反应涉及C–C键断裂以及具有良好官能团耐受性的C–C和C–N键结构。在温和的条件下,可以以中等到良好的产率获得各种各样的产品。