K. Manju et S. Trehan, ASYMMETRIC REDUCTION OF AROMATIC KETONES - IMPORTANCE OF THE CONFORMATION OF THE AROMATIC GROUP, Tetrahedron : asymmetry, 9(19), 1998, pp. 3365-3369
Some aromatic ketones have been reduced by borane or by catecholborane
using oxazaborolidine as a catalyst. It has been found that, when bor
ane is used, the enantiomeric excess of alcohol produced decreases as
the substitution on the ortho position of benzene ring increases. Howe
ver, for ketones with 2,6-disubstituted aryl substituents the enantiom
eric excess increases when catecholborane is used. (C) 1998 Elsevier S
cience Ltd. All rights reserved.