Efficient synthesis of 3-substituted indoles through a domino gold(I) chloride catalyzed cycloisomerization/C3-functionalization of 2-(alkynyl)anilines
作者:C. Praveen、K. Karthikeyan、P.T. Perumal
DOI:10.1016/j.tet.2009.09.019
日期:2009.11
An efficient synthesis of 3-substituted indoles by a sequential approach involving gold(I) chloride catalyzed cycloisomerization/bis-addition and conjugate addition of 2-(alkynyl)anilines has been accomplished. A variety of 2-(alkynyl)anilines, aldehydes, isatins and nitroolefins undergo this overall process in good to excellent yields. This methodology represents an effective alternative to the classical
Gold(I)-catalyzed sequential cycloisomerization/bis-addition of o-ethynylanilines: an efficient access to bis(indolyl)methanes and di(indolyl)indolin-2-ones
作者:C. Praveen、Y. Wilson Sagayaraj、P.T. Perumal
DOI:10.1016/j.tetlet.2008.11.086
日期:2009.2
An efficient synthesis of bis(indolyl)methanes and di(indolyl)indolin-2-ones has been developed by a sequential approach involving gold(I)-catalyzedcycloisomerization/bis-addition of o-ethynylanilines with various aldehydes and isatins, respectively. This methodology opens clean and synthetically competitive alternative to the already established procedures of the synthesis of bis(indolyl)methanes
One-pot synthesis of spirofluorenyl- and spiroindeno[1,2-b]indolyl oxindoles via sequential inter- and intramolecular Friedel–Crafts reactions
作者:Jin Woo Lim、Hye Ran Moon、Su Yeon Kim、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2015.11.080
日期:2016.1
Various spirofluorenyl oxindoles and spiroindeno[1,2-b]indolyl oxindoles were synthesized in good yields in one-pot reaction by TiCl4-catalyzed sequential inter- and intramolecular Friedel-Crafts reactions of isatins with meta-arylphenols and 2-arylindoles in 1,2-dichloroethane. (C) 2015 Elsevier Ltd. All rights reserved.
Iodine-catalyzed condensation of isatin with indoles: A facile synthesis of di(indolyl)indolin-2-ones and evaluation of their cytotoxicity
作者:B.V. Subba Reddy、N. Rajeswari、M. Sarangapani、Y. Prashanthi、Roopa Jones Ganji、Anthony Addlagatta
DOI:10.1016/j.bmcl.2012.02.011
日期:2012.4
Isatin reacts smoothly with indoles in the presence of a catalytic amount of molecular iodine under mild conditions to afford a novel class of di(indolyl)indolin-2-one derivatives in good yields. These molecules are found to possess a promising cytotoxicity against cancer cells only but not on normal cells. (C) 2012 Elsevier Ltd. All rights reserved.
Zn(OTf)2-catalysed indolylation and pyrrolylation of isatins: Efficient synthesis and biochemical assay of 3,3-di(heteroaryl)oxindoles
作者:C PRAVEEN、S NARENDIRAN、P DHEENKUMAR、P T PERUMAL
DOI:10.1007/s12039-013-0510-y
日期:2013.11
An efficient and cheap synthetic approach to 3,3-di(indolyl)oxindoles and 3,3-di(pyrrolyl)oxindoles has been developed via Zn(OTf)2 catalysed indolylation and pyrrolylation of isatins. A preliminary biochemical assay of the synthesized molecules in rodent models were performed to estimate the serum glutamate oxaloacetate transaminase and malondialdehyde levels.