Copper-Catalyzed Synthesis of Alkyl-Substituted Pyrrolo[1,2-a]quinoxalines from 2-(1H-Pyrrol-1-yl)anilines and Alkylboronic Acids
作者:Rulong Yan、Xin Guan
DOI:10.1055/s-0037-1610743
日期:2020.3
A radical pathway for the construction of pyrrolo[1,2-a]quinoxalines by using 2-(1H-pyrrol-1-yl)anilines and alkylboronic acids has been developed. Features of this process include Cu catalysis, readily accessible starting materials, and simple operations. Alkylboronic acids are used for the construction of pyrrolo[1,2-a]quinoxaline derivatives, and the desired products are obtained in moderate yields
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。
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。
TFAA‐Catalyzed Annulation Synthesis of Spiro Pyrrolo[1,2‐
<i>a</i>
]quinoxaline Derivatives from 1‐(2‐Aminophenyl)pyrroles and Benzoquinones/Ketones
作者:Jixiang Ni、Yong Jiang、Zhenjie Qi、Rulong Yan
DOI:10.1002/asia.201900567
日期:——
A metal-free trifluorosulfonate anhydride (TFAA)-catalyzed strategy for the synthesis of spiro pyrrolo[1,2-a]quinoxalines from 1-(2-aminophenyl)pyrroles and benzoquinones/ketones has been developed. With this general method, spiro pyrrolo[1,2-a]quinoxalines have been accessed via nucleophilic addition and cyclization. This reaction exhibits good functional group tolerance, and a wide range of products
Simple and green synthesis of benzimidazoles and pyrrolo[1,2-<i>a</i>]quinoxalines <i>via</i> Mamedov heterocycle rearrangement
作者:Shichen Li、Lei Feng、Chen Ma
DOI:10.1039/d1nj01251g
日期:——
A method for the synthesis of coupling compounds of benzimidazoles and pyrrolo[1,2-a]quinoxalines via Mamedov Heterocycle Rearrangement is reported here. This method was conducted at room temperature and only solvent (HOAc) was required. A series of 4-(1H-benzo[d]imidazol-2-yl)pyrrolo[1,2-a]quinoxaline derivatives were obtained in moderate to good yields.
本文报道了通过Mamedov杂环重排合成苯并咪唑与吡咯并[1,2- a ]喹喔啉的偶联化合物的方法。该方法在室温下进行,仅需要溶剂(HOAc)。以中等至良好的产率获得了一系列4-(1 H-苯并[ d ]咪唑-2-基)吡咯并[1,2- a ]喹喔啉衍生物。