An interrupted Ugi reaction enables the preparation of substituted indoxyls and aminoindoles
摘要:
In a variation of the classical Ugi reaction, an acid-promoted reaction between imines and isocyanides forms both 3-aminoindoles and substituted indoxyls. A recently reported triflyl phosphoramide is shown to he critical to obtain high yields under mild conditions. (C) 2008 Elsevier Ltd. All rights reserved.
An interrupted Ugi reaction enables the preparation of substituted indoxyls and aminoindoles
摘要:
In a variation of the classical Ugi reaction, an acid-promoted reaction between imines and isocyanides forms both 3-aminoindoles and substituted indoxyls. A recently reported triflyl phosphoramide is shown to he critical to obtain high yields under mild conditions. (C) 2008 Elsevier Ltd. All rights reserved.