Amidation of carboxylic acids via the mixed carbonic carboxylic anhydrides and its application to synthesis of antidepressant (1 S ,2 R )-tranylcypromine
Primary amidations of carboxylic acids 1 or 3 with NH4Cl in the presence of ClCO2Et and Et3N were developed to afford the corresponding primary amides in 22% to quantitative yields. Additionally, we have applied the amidation to the preparation of various amides containing hydroxamic acids and achieved the synthesis of (1S,2R)-tranylcypromine as an antidepressant medicine via Lossen rearrangement. (C) 2017 Elsevier Ltd. All rights reserved.
[EN] 2-AMINO-QUINAZOLINE DERIVATIVES USEFUL AS INHIBITORS OF BETA-SECRETASE (BACE)<br/>[FR] NOUVEAUX DERIVES DE 2-AMINO-QUINAZOLINE UTILES EN TANT QU'INHIBITEURS DE LA $G(B)-SECRETASE (BACE)
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2006017836A3
公开(公告)日:2006-06-29
Deamination of bridgehead amines via the nitroso- and nitroamide approach
作者:Emil H. White、Richard H. McGirk、Carl A. Aufdermarsh、H. P. Tiwari、Michael J. Todd