Cesium Hydroxide Promoted Chemoselective <i>N</i>-Alkylation for the Generally Efficient Synthesis of Secondary Amines
作者:Ralph N. Salvatore、Advait S. Nagle、Shaun E. Schmidt、Kyung Woon Jung
DOI:10.1021/ol9910417
日期:1999.12.1
[GRAPHICS]Selective N-alkylation of primary amines was developed using cesium hydroxide to prepare various secondary amines efficiently. A cesium base not only promoted monoalkylations of primary amines but also suppressed overalkylations. Various amines and alkyl bromides were examined, and the preliminary results demonstrated this methodology was highly chemoselective, favoring mono-N-alkylation over dialkylation. In particular, use of amino acid derivatives afforded the desired secondary amines exclusively.
[EN] TREATMENT OF STUTTERING AND OTHER COMMUNICATION DISORDERS WITH NOREPINEPHRINE REUPTAKE INHIBITORS<br/>[FR] TRAITEMENT DE BEGAIEMENT ET D'AUTRES TROUBLES DE LA COMMUNICATION AU MOYEN D'INHIBITEURS DU RECAPTAGE DE LA NORADRENALINE
申请人:LILLY CO ELI
公开号:WO2005021095A2
公开(公告)日:2005-03-10
Provided are methods and medicaments for treating stuttering or another communication disorder, comprising administering to a patient in need of such treatment an effective amount of a selective norepinephrine reuptake inhibitor.
Cesium Effect: High Chemoselectivity in Direct N-Alkylation of Amines
作者:Ralph Nicholas Salvatore、Advait S. Nagle、Kyung Woon Jung
DOI:10.1021/jo010643c
日期:2002.2.1
A novel method for the mono-N-alkylation of primary amines, diamines, and polyamines was developed using cesium bases in order to prepare secondaryamines efficiently. A cesium base not only promoted alkylation of primary amines but also suppressed overalkylations of the produced secondaryamines. Various amines, alkyl bromides, and alkyl sulfonates were examined, and the results demonstrated this