We report how an acidic TiCl4-Zn/t-BuOOH system is able to promote the one-pot multicomponent synthesis of beta,beta-disubstituted-beta-aminoalcohols via nucleophilic addition of a hydroxymethyl radical to activated ketimines generated in situ in methanol solvent. While ketimines are generally recognized as less reactive and less stable when compared with aldimines, Ti(IV) plays a key role in facilitating their formation and in enhancing their electrophilic character. As a consequence, the reaction occurs at room temperature and under non-anhydrous conditions in just 1 h, without requiring either the preformation of the ketimine or protection of the amino group. The scope of the reaction is widely explored and a possible mechanism is discussed. (C) 2012 Elsevier Ltd. All rights reserved.
[EN] ANDROGEN RECEPTOR MODULATORS<br/>[FR] MODULATEURS DU RECEPTEUR ANDROGENE
申请人:KAROBIO AB
公开号:WO2005042464A1
公开(公告)日:2005-05-12
Treatment of Diseases caused by Disturbances of the Activity of the Androgen Receptor uses of compounds of Formula (I): (as defined herein), for the treatment of diseases caused by disturbances of the activity of androgen receptor are provided: Formula (I). Isolated compounds of Formula (I) are also provided.