A New Method for Hydrolyzing 2-Aryl-4,4-Dimethyl-2-Oxazolines to Aryl Carboxylic Acids
摘要:
A method of hydrolyzing 2-aryl-4,4-dimethyl-2-oxazolines with trifluoromethanesulfonic anhydride is described which works well even for highly hindered systems where alternate methods fail.
Ligand-Accelerated <i>ortho</i>-C–H Alkylation of Arylcarboxylic Acids using Alkyl Boron Reagents
作者:Peter S. Thuy-Boun、Giorgio Villa、Devin Dang、Paul Richardson、Shun Su、Jin-Quan Yu
DOI:10.1021/ja409014v
日期:2013.11.20
A protocol for the Pd(II)-catalyzed ortho-C-H alkylation of phenylacetic and benzoic acids using alkylboron reagents is disclosed. Monoprotected amino acid ligands (MPAA) were found to significantly promote reactivity. Both potassium alkyltrifluoroborates and alkylboronic acids were compatible coupling partners. The possibility of a radical alkyl transfer to Pd(II) was also investigated.