[EN] ARYLAMIDE COMPOUND, PHARMACEUTICAL COMPOSITION COMPRISING SAME, AND PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] COMPOSÉ ARYLAMIDE, COMPOSITION PHARMACEUTIQUE LE COMPRENANT, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 芳基酰胺化合物、包含其的药物组合物及其制备方法和用途
申请人:SICHUAN KELUN BIOTECH BIOPHARMACEUTICAL CO LTD
Copper(II)-Catalyzed Asymmetric Photoredox Reactions: Enantioselective Alkylation of Imines Driven by Visible Light
作者:Yanjun Li、Kexu Zhou、Zhaorui Wen、Shi Cao、Xiang Shen、Meng Lei、Lei Gong
DOI:10.1021/jacs.8b09251
日期:2018.11.21
on the copper(II) bisoxazoline complexes (CuII-BOX) for the light-induced enantioselective alkylation of imines. The reactions proceed under very mild conditions and without a need for any other photosensitizer. The simple catalytic system and readily tunable chiral ligands enable a significantly high level of enantioselectivity for the formation of chiral amine products bearing a tetrasubstituted carbon
不对称光氧化还原催化为通过新的反应途径开发新的手性分子合成方法提供了令人兴奋的机会。然而,使用第一排过渡金属配合物作为手性光氧化还原催化剂仍然是一项艰巨的挑战,尽管这些配合物经济、环保,并且通常表现出特殊的反应性。我们在本文中报告了一类基于铜 (II) 双恶唑啉配合物 (CuII-BOX) 的高效不对称/光氧化还原双功能催化剂的开发,用于亚胺的光诱导对映选择性烷基化。反应在非常温和的条件下进行,不需要任何其他光敏剂。简单的催化系统和易于调节的手性配体使得形成具有四取代碳立体中心的手性胺产物具有显着高水平的对映选择性(36 个实例,高达 98% ee)。总体而言,CuII-BOX 催化剂引发自由基生成,并控制随后的立体选择性转化。这种利用由第一排过渡金属和柔性手性配体组成的手性配合物作为不对称光氧化还原催化剂的策略为开发绿色不对称合成方法提供了一个有效的平台。
Nucleophilic Borylation of Benzyl Halides with Bis(pinacolato)diboron Catalyzed by Palladium(0) Complexes
Nucleophilic borylation of benzyl halides with bis(pinacolato)diboron in the presence of KOAc in toluene was effectively catalyzed by a palladium complex generated in situ from Pd(dba)2 and (4-MeOC6H4)3P, giving the corresponding pinacol benzylboronates in high yields.