A direct amidation of carboxylicacids with tertiary amines could be carried out in the presence of the Ph3P–I2 activator. With an appropriate reagent addition sequence, a range of carboxylicacids including aliphatic, allylic, and aromatic acids could be converted into their corresponding tertiary amides under mild conditions without requirement of metal catalysis.
Metal-Free Reduction of Aromatic and Aliphatic Nitro Compounds to Amines: A HSiCl<sub>3</sub>-Mediated Reaction of Wide General Applicability
作者:M. Orlandi、F. Tosi、M. Bonsignore、M. Benaglia
DOI:10.1021/acs.orglett.5b01698
日期:2015.8.21
A new, mild, metal-free, HSiCl3-mediated reduction of both aromatic and aliphaticnitro groups to amines that is of wide general applicability, tolerant of many functional groups, and respectful of the stereochemical integrity of stereocenters is reported.