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