Novel, Recyclable, and Thermally Stable Task-Specific Ionic Liquid (TBA Acetate) Medium/Catalyst for the Synthesis of Indolylidinecyclic-1,3- and -1,4-diketones
摘要:
A simple and efficient synthesis of indolylidinethiazolidnediones (3) and indolylidinecyclic-1,3-diketones (5) has been developed by reaction of indole-3-aldehyde (1) with thiazolidinedione (2) or cyclic-1,3-diketones (4) using tetra butyl ammonium acetate (TBAA) melt as novel, cost-effective, and recyclable ionic liquid under solvent-free green conditions at 100 degrees C for 15-20min without additional use of catalyst. [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.]
Cu(ii)-catalyzed C–H (SP3) oxidation and C–N cleavage: base-switched methylenation and formylation using tetramethylethylenediamine as a carbon source
作者:Lei Zhang、Chen Peng、Dan Zhao、Yue Wang、Hai-Jian Fu、Qi Shen、Jian-Xin Li
DOI:10.1039/c2cc32009f
日期:——
Base-switched methylenation and formylation using tetramethylethylenediamine (TMEDA) as a carbon source have been achieved under mild conditions, catalyzed by CuCl(2), with atmospheric oxygen as oxidant. Bisindolylmethanes, diphenylmethanes and 3-formylindoles were synthesized with excellent regioselectivity and good yield.
Novel, Recyclable, and Thermally Stable Task-Specific Ionic Liquid (TBA Acetate) Medium/Catalyst for the Synthesis of Indolylidinecyclic-1,3- and -1,4-diketones
作者:Sd. Riyaz、A. Indrasena、A. Naidu、P. Dubey
DOI:10.1080/00397911.2013.806988
日期:2014.2
A simple and efficient synthesis of indolylidinethiazolidnediones (3) and indolylidinecyclic-1,3-diketones (5) has been developed by reaction of indole-3-aldehyde (1) with thiazolidinedione (2) or cyclic-1,3-diketones (4) using tetra butyl ammonium acetate (TBAA) melt as novel, cost-effective, and recyclable ionic liquid under solvent-free green conditions at 100 degrees C for 15-20min without additional use of catalyst. [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.]