螺[4 H-茚并[1,2 - b ]吡啶-4,3 ′-[3 H ]吲哚]和螺[ ac ] -1(2 H),4′-[4 H -茚并[1,2- b ]吡啶]是通过茚满-1,3-二酮,1,3-二羰基化合物,靛红(= 1 H-吲哚-2,3-二酮)或1,2据报道,在催化量的吡啶存在下,二甲苯和AcONH 4在回流的甲苯中。
A New Four-Component Reaction for the Synthesis of Spiro[4H-indeno[1,2-b]pyridine-4,3′-[3H]indoles]
作者:Afsaneh Feiz、Ghazaleh Imani Shakibaei、Zahra Yasaei、Hamid Reza Khavasi、Ayoob Bazgir
DOI:10.1002/hlca.201100047
日期:2011.9
A new four‐componentsynthesis of spiro[4H‐indeno[1,2‐b]pyridine‐4,3′‐[3H]indoles] and spiro[acenaphthylene‐1(2H),4′‐[4H‐indeno[1,2‐b]pyridines] by the reaction of indane‐1,3‐dione, 1,3‐dicarbonyl compounds, isatins (=1H‐indole‐2,3‐diones) or acenaphthylene‐1,2‐dione, and AcONH4 in refluxing toluene in the presence of a catalytic amount of pyridine is reported.
螺[4 H-茚并[1,2 - b ]吡啶-4,3 ′-[3 H ]吲哚]和螺[ ac ] -1(2 H),4′-[4 H -茚并[1,2- b ]吡啶]是通过茚满-1,3-二酮,1,3-二羰基化合物,靛红(= 1 H-吲哚-2,3-二酮)或1,2据报道,在催化量的吡啶存在下,二甲苯和AcONH 4在回流的甲苯中。
Green Aspect for Multicomponent Synthesis of Spiro[4<i>H</i>-indeno[1,2-b]pyridine-4,3′-[3<i>H</i>]indoles]
作者:Nilam C. Dige、Dattaprasad M. Pore
DOI:10.1080/00397911.2015.1092551
日期:2015.11.2
An efficient, four-component reaction of isatin, 1,3-indanedione, ethyl acetoacetate, and ammonium acetate in ethanol/water (9:1) system furnished spiro[4H-indeno[1,2-b]pyridine-4,3-[3H]indoles] at room temperature. Merits of the method are mild reaction conditions, simple workup procedure, and ambient temperature. The synthesized compounds exhibit excellent fluorescence properties.
Preparation of a dual-functionalized fumed silica nanoparticle catalysis for synthesis of azaluorenone derivatives
thermogravimetric analysis (TGA) revealed that the amount of organic compounds grafted on the surface of FSi–PrNH2 and FSi–PrNH–BuSO3H was 2.59 and 1.12 mmol/g, respectively. After well characterizing the FSi–PrNH–BuSO3H, it was used to catalyze the reaction of 1,3-indandione, isatin, ethyl acetoacetate, and ammonium acetate for synthesis of azafluorenone derivatives. Graphical abstract