Regioselective Preparation of 3-Alkoxy-4,5-difluoroanilines by SNAr.

Autor: Van Brandt, Sven, Rombouts, Frederik J. R., Martínez-Lamenca, Carolina, Leenaerts, Jos, Rauws, Tom R. M., Trabanco, Andrés A.
Zdroj: European Journal of Organic Chemistry; Dec2012, Vol. 2012 Issue 36, p7048-7052, 5p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index