Conjugate Reduction of 2-Butene-1,4-diones with LiAlH<sub>4</sub>–SbCl<sub>3</sub>
作者:Shinsei Sayama、Yutaka Inamura
DOI:10.1246/bcsj.64.306
日期:1991.1
The reagent LiAlH4–SbCl3 was found to be more effective for a conjugate reduction of 2-butene-1,4-diones in comparison with the reagent LiAlH4–other metal halides.
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.