Synthetic applications of -Aryl- -acyl hydroxymic acids. A convenient route to 3-substituted -Benzoyl oxindoles
作者:Paulo S. Almeida、Sundaresan Prabhakar、Ana M. Lobo、M.João Marcelo-Curlo
DOI:10.1016/s0040-4039(00)78815-0
日期:1991.6
The enol silylethers of N-acyloxybenzanilides undergo smooth rearrangement to afford o-amino-benzoyl-phenylacetic acids and thence to oxinodoles by dehydration.
Palladium catalysed ter- and tetra-molecular queuing processes. One-pot routes to 3-spiro-2-oxindoles and 3-spiro-2(3H)-benzofuranones
The palladiumcatalysed reactions of 2-halophenols and -anilines with vinyl halides or triflates and CO(1atm) generates 3-spiro-2-oxindoles and 3-spiro-2(3H)-benzofuranones. Analogous tetramolecular reactions employing norbornenyl triflate and organo-tin(IV) or -boron(III) reagents allow additional functionality to be incorporated regio- and stereo-specifically.