Synthesis of Bisindolylindeno[1,2-b]quinoxaline and Bisindolylindeno[3,4-b]pyrazine with Poly(<i>N,N</i>′-dibromo-<i>N</i>-ethylnaphthyl-2,7-disulfonamide)
Poly(N,N-dibromo-N-ethylnaphthyl-2,7-disulfonamide) (PBNS) as novel reagent was synthesized. Bisindolylindeno[1,2-b]quinoxaline and bisindolylindeno[3,4-b]pyrazine derivatives were synthesized in a simple and efficient method from the three-component condensation reaction of indole, indane-1,2,3-trione, and diamine aromatic compounds by PBNS under solvent-free conditions at 80 degrees C in good to excellent yields, short reaction times, and a simple procedure for new derivatives. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications((R)) for the following free supplemental resource(s): Full experimental and spectral details.]
Montmorillonite K-10 clay catalyzed solvent-free synthesis of bis-indolylindane-1,3-dione, 2-(1′,3′-dihydro-1H-[2,3′]biindolyl-2′-ylidene)-indan-1,3-dione and bisindolylindeno[1,2-b]quinoxaline under microwave irradiation
作者:Subhendu Naskar、Priyankar Paira、Rupankar Paira、Shyamal Mondal、Arindam Maity、Abhijit Hazra、Krishnendu B. Sahu、Pritam Saha、Sukdeb Banerjee、Peter Luger、Manuela Webe、Nirup B. Mondal
DOI:10.1016/j.tet.2010.04.084
日期:2010.7
2-(1′,3′-dihydro-1H-[2,3′]biindolyl-2′-ylidene)-indan-1,3-diones/bis-indolylindane-1,3-diones from ninhydrin and 3-substituted/unsubstituted indoles. It uses montmorilloniteK-10 as catalyst in a solvent-free condition under microwaveirradiation. The method was also used for the synthesis of novel bisindolylindeno[1,2-b]quinoxaline derivatives.
已描述了一种环境友好的方案,用于合成新型2-(1',3'-dihydro-1 H- [2,3'] biindolyl-2'-亚烷基)-茚满-1,3-二酮/双-茚三酮和3-取代/未取代的吲哚的吲哚基茚满-1,3-二酮。它在无溶剂条件下,微波辐射下使用蒙脱石K-10作为催化剂。该方法还用于合成新的双二吲哚基[1,2- b ]喹喔啉衍生物。