Studies in Stereochemistry. XXIX. Neighboring Hydrogen Participation in Ionization to Give Ethylene Protonium Ions as Intermediates in the Wagner-Meerwein Rearrangement1
The synthesis of different metal pincer complexes coordinating to the chiral PNP ligand bis(2‐((2R,5R)‐2,5‐dimethyl‐phospholanoethyl))amine is described in detail. The characterized complexes with Mn, Fe, Re and Ru as metal centers showed good activities regarding the reduction of several prochiral ketones. Comparing these catalysts, the non‐noble metal complexes produced best selectivities not only for
Facile synthesis of chiral isopropyl carbinols with high enantiomeric excess via catalytic enantioselective addition of diisopropylzinc to aldehydes
作者:Weon Ki Yang、Byung Tae Cho
DOI:10.1016/s0957-4166(00)00253-6
日期:2000.7
Highly effective syntheses of chiral alkyl and aryl isopropyl carbinols with highenantiomericexcess (94–98% ee) via catalytic enantioselective addition of diisopropylzinc to aldehydes have been developed.