Synthesis of<i>anti</i>-1,3-Diols through RuCl<sub>3</sub>/PPh<sub>3</sub>-Mediated Hydrogenation of β-Hydroxy Ketones: An Alternative to Organoboron Reagents
Hydrogenation of enantioenriched β-hydroxyketones promoted by the catalyst generated in situ from commercially available and inexpensive RuCl3 and PPh3 under hydrogen pressure allowed the efficient preparation of a variety of anti-1,3-diols in good yields and with a high level of diastereoselectivity. This method should be an interesting alternative to organoboronreagents for the diastereoselective
Iridium-Catalyzed, Site-Selective Silylation of Secondary C(sp<sup>3</sup>)–H Bonds in Secondary Alcohols and Ketones
作者:Jake W. Wilson、Bo Su、Makoto Yoritate、Jake X. Shi、John F. Hartwig
DOI:10.1021/jacs.3c03127
日期:2023.9.13
We report the iridium-catalyzed, stereoselective conversion of secondary alcohols or ketones to anti-1,3-diols by the silylation of secondary C–H bonds γ to oxygen and oxidation of the resulting oxasilolane. The silylation of secondary C–H bonds in secondary silyl ethers derived from alcohols or ketones is enabled by a catalyst formed from a simple bisamidine ligand. The silylation occurs with high