Zx. Shen et al., A NEW SERIES OF CHIRAL CATALYSTS FOR THE ENANTIOSELECTIVE BORANE REDUCTION OF KETONES, Chinese journal of chemistry, 15(5), 1997, pp. 459-463
A new series of 1,3,2-oxazaborolidine catalysts substituted in positio
n 4 by the (CH3)(3)C(CH2)(n) group (n=2, 3, 4, 5) were synthesized and
applied to the borane reduction of prochiral ketones. The relationshi
p between catalyst structure and enantioselectivity was discussed.