Substrate Promiscuity of <i>ortho</i>-Naphthoquinone Catalyst: Catalytic Aerobic Amine Oxidation Protocols to Deaminative Cross-Coupling and <i>N</i>-Nitrosation
作者:Tengda Si、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acscatal.9b03442
日期:2019.10.4
been identified as versatile aerobic oxidation catalysts. Primary amines were readily cross-coupled with primary nitroalkanes via deaminative pathway to give nitroalkene derivatives in good to excellent yields. Secondary and tertiary amines were inert to ortho-naphthoquinone catalysts; however, secondary nitroalkanes were readily converted by ortho-naphthoquinone catalysts to the corresponding nitrite
基于邻萘醌的有机催化剂已被鉴定为通用的好氧氧化催化剂。伯胺很容易通过脱氨途径与伯硝基烷烃交联,从而以良好或优异的收率得到硝基烯烃衍生物。仲胺和叔胺对邻萘醌催化剂是惰性的。然而,仲硝基烷烃很容易通过邻萘醌催化剂转化为相应的亚硝酸盐类,后者将胺原位氧化为相应的N。-亚硝基化合物。在不以化学计量的量使用刺激性氧化剂的情况下,本催化好氧氧化方案利用底物的混杂特性在温和的反应条件下提供了容易的胺氧化产物的通道。