Highly Enantioselective Radical Addition to <i>N</i>-Benzoyl Hydrazones Using Chiral Ammonium Salts
作者:Doo Ok Jang、Sang Yoon Kim
DOI:10.1021/ja807685r
日期:2008.12.3
In the presence of a protonated cinchonine derivative, radicaladdition reactions proceeded efficiently, affording addition adducts in high yields with an extremely high enantioselectivity. The chiralammonium salt was recyclable after a simple aqueous workup. The reaction provides environmentally benign reaction conditions.
Synthesis of amino-diamondoid pharmacophores <i>via</i> photocatalytic C–H aminoalkylation
作者:William K. Weigel、Hoang T. Dang、Hai-Bin Yang、David B. C. Martin
DOI:10.1039/d0cc02804e
日期:——
direct C–H aminoalkylation reaction using two light-activated H-atom transfer catalyst systems that enable the introduction of protected amines to native adamantane scaffolds with C–C bond formation. The scope of adamantane and imine reaction partners is broad and deprotection provides versatile amine and amino acid building blocks. Using readily available chiral imines, the enantioselective synthesis
我们报告了使用两种光活化 H 原子转移催化剂系统的直接 C-H 氨基烷基化反应,该反应能够将受保护的胺引入具有 C-C 键形成的天然金刚烷支架。金刚烷和亚胺反应伙伴的范围很广,去保护提供了通用的胺和氨基酸构建块。使用容易获得的手性亚胺,还描述了沙格列汀核心和金刚乙胺衍生物的对映选择性合成。