Allylic Oxidations Catalyzed by Dirhodium Catalysts under Aqueous Conditions
申请人:Doyle Michael P.
公开号:US20090093638A1
公开(公告)日:2009-04-09
The present invention relates to compositions and methods for achieving the efficient allylic oxidation of organic molecules, especially olefins and steroids, under aqueous conditions. The invention concerns the use of dirhodium (II,II) “paddlewheel complexes, and in particular, dirhodium carboximate and tert-butyl hydroperoxide as catalysts for the reaction. The use of aqueous conditions is particularly advantageous in the allylic oxidation of 7-keto steroids, which could not be effectively oxidized using anhydrous methods, and in extending allylic oxidation to enamides and enol ethers.
Oxidative Mannich Reactions of Tertiary Amines Using a Cu(II) 2-Quinoxalinol Salen Catalyst
作者:Clayton C. Black、Anne E.V. Gorden
DOI:10.1021/acs.joc.9b01409
日期:2019.8.2
Oxidative Mannich reactions can be catalyzed using a Cu(II) 2-quinoxalinol salen catalyst and with tert-butyl hydroperoxide (TBHP). Under mild conditions, a range of both cyclic and open chain tertiary amines was tested as substrates, resulting in yields up to 98%.