Regioselective Preparation of 3-Alkoxy-4,5-difluoroanilines by S<sub>N</sub>Ar
作者:Sven Van Brandt、Frederik J. R. Rombouts、Carolina Martínez-Lamenca、Jos Leenaerts、Tom R. M. Rauws、Andrés A. Trabanco
DOI:10.1002/ejoc.201201228
日期:2012.12
A simple and scalable procedure to introduce alcohols selectively at the 3-position of 3,4,5-trifluoroaniline is described. The procedure uses powdered NaOH as base and catalytic 15-crown-5 in refluxing toluene with a Dean–Stark trap. A short exploration of other nucleophiles and fluoroaryl electrophiles is also described.