Inversion of Diastereoselectivity Depending on Substrate Concentration in Baker’s Yeast Catalyzed Reduction of σ-Symmetrical 1,3-Cyclopentadiones and 1,3-Cyclohexadiones
Inversion of Diastereoselectivity Depending on Substrate Concentration in Baker’s Yeast Catalyzed Reduction of σ-Symmetrical 1,3-Cyclopentadiones and 1,3-Cyclohexadiones
Efficient Construction of Polycyclic Derivatives via a Highly Selective Cu<sup>I</sup>-Catalyzed Domino Reductive-Aldol Cyclization
作者:Julia Deschamp、Olivier Riant
DOI:10.1021/ol802879f
日期:2009.3.19
A versatile methodology for the diastereo- and enantioselective domino reductive-aldol cyclizations is reported. By using a copper (I)/diphosphane ligand, various five- and six-membered rings were generated with good to excellent diastereo- and enantioselectivities (cis:trans up to 100:0 and ee up to 95%).