A mild oxidizing reagent for alcohols and 1,2-diols: o-iodoxybenzoic acid (IBX) in DMSO
作者:Marco Frigerio、Marco Santagostino
DOI:10.1016/0040-4039(94)80038-3
日期:1994.10
o-Iodoxybenzoic acid (IBX) smoothly oxidizes primary and secondary alcohols to aldehydes and ketones, respectively. 1,2-Diols are converted to α-ketols or α-diketones without any oxidative cleavage of the glycol CC bond. IBX oxidations are easily conducted in DMSO solution at room temperature, with yields ranging from good to quantitative.
The catalytic oxygenation of cholesterol 1 with a platinum black catalyst under moderate pressure (20–25 atm) of oxygen yielded eleven oxidation products, 3–13a. The reaction pathway of the catalytic oxygenation is discussed on the basis of the results for several reaction conditions.