Ultrasound-Promoted Reaction of 2-Chlorobenzoic Acids and Aliphatic Amines
作者:Maite L. Docampo、Rolando F. Pellón、Ana Estevez-Braun、Angel G. Ravelo
DOI:10.1002/ejoc.200700281
日期:2007.8
An improvement to the use of DMF as a solvent for the condensation of 2-chlorobenzoic acids with aliphaticprimary or secondary amines was described. A number of alkylaminobenzoic acids and dialkylaminobenzoic acids were synthesized in acceptable-to-good yield. The advantages of this procedure include readily available substrates, the use of an inexpensive copper powder without taking any precautions
The present invention relates to compounds of formula IA
wherein
R1, R2, R3, and n are as defined in the specification, and to pharmaceutically active acid addition salts thereof. The compounds of the invention are useful in the treatment of neurological and neuropsychiatric disorders.