Catalyticenantioselective chemical reactions involving highly reactive radical species remain largely unexplored. We report herein for the first time a novel enantioselective radical ring-opening cyanation of redox-active oxime esters by dual photoreodox and copper catalysis. This mild protocol shows good functional group tolerance and broad substrate scope, producing a wide range of optically active
Copper-catalyzed ring-opening C(sp<sup>3</sup>)–N coupling of cycloketone oxime esters: access to 1°, 2° and 3° alkyl amines
作者:Li Tian、Shuangqiu Gao、Rui Wang、Yang Li、Chunlin Tang、Lili Shi、Junkai Fu
DOI:10.1039/c9cc02030f
日期:——
A novel copper-catalyzed C(sp3)–N coupling of cycloketone oxime esters with nitrogen nucleophiles has been realized. All of the N-aryl/alkylanilines, anilines and benzophenoneimine could be employed in this protocol to produce a variety of 1°, 2° and 3° alkyl amines in one or two steps. These resultant cyano-containing alkyl amines were proven to be versatile synthetic building blocks in a variety
[EN] COMPOUNDS FOR THE REDUCTION OF ß-AMYLOID PRODUCTION<br/>[FR] COMPOSÉS POUR LA RÉDUCTION DE LA PRODUCTION DE ß-AMYLOÏDE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2012103297A1
公开(公告)日:2012-08-02
The present disclosure provides a series of compounds of the formula (I), which modulate β-amyloid peptide (β-ΑΡ) production and are useful in the treatment of Alzheimer's Disease and other conditions affected by β-amyloid peptide (β-ΑΡ) production.
[EN] COMPOUNDS FOR THE REDUCTION OF ß-AMYLOID PRODUCTION<br/>[FR] COMPOSÉS DESTINÉS À LA RÉDUCTION DE LA PRODUCTION DE BETA-AMYLOÏDES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2011014535A1
公开(公告)日:2011-02-03
The present disclosure provides a series of compounds of the formula (I) which modulate β-amyloid peptide (β-AP) production and are useful in the treatment of Alzheimer's Disease and other conditions affected by β-amyloid peptide (β-AP) production.
A kineticresolution of racemic 2-substituted cyclopentanones via highly regio- and enantioselective Baeyer–Villiger oxidation has been successfully developed. The reaction could afford the normal 6-substituted δ-lactones in up to 98% ee and >19/1 regioselectivity. Meanwhile, the unreacted ketones were recovered in excellent ee values (up to 98%). It represents the best results of the kinetic resolution