[EN] ALPHA-HYDROGEN SUBSTITUTED NITROXYLS AND DERIVATIVES THEREOF AS CATALYSTS<br/>[FR] NITROXYLES À SUBSTITUTION ALPHA-HYDROGÈNE ET LEURS DÉRIVÉS EN TANT QUE CATALYSEURS
申请人:TECHNION RES & DEV FOUNDATION
公开号:WO2013118118A1
公开(公告)日:2013-08-15
The present invention relates to novel alpha-hydrogen substituted nitroxyl compounds and their corresponding oxidized (oxoammonium cations) and reduced (hydroxylamine) forms, and to the use of such compounds, inter alia, for (1) oxidation of primary and secondary alcohols to aldehydes and ketones, respectively; (2) resolution of racemic alcohols; (3) desymmetrization of meso-alcohol; (4) as radicals and spin trapping reagents; and (5) as polymerization agents. The present invention further relates to processes for preparing the novel nitroxyl/oxoammonium/ hydroxylamine compounds from the corresponding amines, and to certain novel amine derivatives and their uses. The compounds of the invention as well as the amine precursors are also useful as ligands for transition metals and as organocatalysts in e.g., aldol reactions.
本发明涉及新型α-氢取代亚硝基化合物及其相应的氧化物(氧化氨阳离子)和还原物(羟胺)形式的使用,其中这些化合物可用于(1)将一级和二级醇氧化为醛和酮;(2)拆分外消旋醇;(3)去对称化中性醇;(4)作为自由基和自旋捕获试剂;以及(5)作为聚合剂。本发明还涉及从相应胺制备新型亚硝基/氧化氨/羟胺化合物的方法,以及某些新型胺衍生物及其用途。本发明的化合物以及胺前体也可用作过渡金属的配体,并可用作有机催化剂,例如在Aldol反应中。