Functionalized 2-azabicyclo[3.3.0]octanes as ligands in the enantioselective catalysis
作者:Hans Günter Aurich、Michael Soeberdt
DOI:10.1016/s0040-4039(98)00345-1
日期:1998.4
prepared by condensation of β-aminoalcohols 2 with ethyl (2-oxocyclopentyl)acetate 1 and subsequent reduction of intermediates 3. Compound 4a was converted to 6 via 5. With compounds 4, 5 or 6 as chiral ligands in the reaction of benzaldehyde with diethylzinc an enantiomeric excess between 14 and 84% was achieved.