Mild and selective deprotection of carbamates with Bu4NF
摘要:
A new mild method allowing the removal of carbamates using TBAF in THF is reported. Reactions were performed on indole, indoline, N-methyl aniline, aniline and tryptamine derivatives. The observed selectivity according to the carbamates or the substrates is discussed. A mechanism is postulated. (C) 2004 Published by Elsevier Ltd.
AN INTRAMOLECULAR AMINATION OF ARYL HALIDES WITH A COMBINATION OF COPPER (I) IODIDE AND CESIUM ACETATE: PREPARATION OF 5,6-DIMETHOXYINDOLE-1,2-DICARBOXYLIC ACID 1-BENZYL ESTER 2-METHYL ESTER
A new mild method allowing the removal of carbamates using TBAF in THF is reported. Reactions were performed on indole, indoline, N-methyl aniline, aniline and tryptamine derivatives. The observed selectivity according to the carbamates or the substrates is discussed. A mechanism is postulated. (C) 2004 Published by Elsevier Ltd.
A mild inter- and intramolecular amination of aryl halides with a combination of CuI and CsOAc
combination of CuI and CsOAc was found to catalyze aryl amination under mild conditions. The reaction takes place at room temperature or at 90 °C with broad functional group compatibility. The intramolecular reaction was able to form five-, six-, and seven-membered rings with various protecting groups on the nitrogen atom. The scope of the intermolecular amination, as well as its applications to unsymmetrical