One-pot, four-component synthesis of novel biologically important indeno[2,3-b]quinoxaline]-3-carbonitriles in fluoro-alcohols under ultrasound irradiation
作者:Mohammad Reza Poor Heravi、Fatemeh Norouzy
DOI:10.1007/s11164-017-2876-9
日期:2017.7
trifluoroethanol (TFE) as an efficient and recyclable medium in promoting one-pot, four-component synthesis of biologically and pharmacologically important spiropyrans and spiroquinoxalines from condensation of malononitrile or ethyl 2-cyanoacetate, ninhydrin, 1,2-phenylenediamine, 1,3-dicarbonyl compounds and 1- or 2-naphthol or naphthylamine under refluxing or ultrasoundirradiation at room temperature in
A one‐pot, four‐component reaction for the efficient synthesis of novel spiro[indeno[2,1‐b]quinoxaline‐11,4′‐pyran]‐2′‐amines by using InCl3 is described. The syntheses are achieved by reacting ninhydrin with 1,2‐diaminobenzenes to give indenoquinoxalines, which are trapped in situ by alkyl malonates and various α‐methylencarbonyl compounds through cyclization, providing multifunctionalized spiro‐substituted
描述了一种使用InCl 3有效合成新型螺[茚并[ 2,1- b ]喹喔啉-11,4'-吡喃] -2'-胺的单锅四组分反应。茚三酮与1,2-二氨基苯反应生成茚并喹喔啉,然后被丙二酸烷基酯和各种α-亚甲基羰基化合物通过环化作用原位捕获,从而提供了多官能螺取代的茚并[2,1 - b ]喹喔啉-11 ,4'-吡喃-2'-胺。
An efficient protocol for the synthesis of spiroindenoquinoxaline derivatives using novel NiFe2O4/Ag3PO4 as a nano magnetically heterogeneous catalyst
作者:Narges Hosseini Nasab、Javad Safari
DOI:10.1016/j.poly.2019.02.032
日期:2019.5
Abstract This work presents the one-pot, four component reaction for the synthesis and characterization of various spiro[indeno[1,2-b]quinoxaline-11,4-pyran]-2′-amine via ninhydrin, 1,2-phenylenediamine, malononitrile or ethylcyanoacetate and α-methylenecarbonyl compounds under reflux conditions by using NiFe2O4/Ag3PO4 as a novel magnetically reusable nanocatalyst. The structure and composition of