B. Basu et al., SYNTHESIS OF OPTICALLY-ACTIVE 1,1'-FERROCENYLENE-BIS-ALANINE CARRYING4 DIFFERENT PROTECTING GROUPS, Tetrahedron : asymmetry, 8(11), 1997, pp. 1841-1846
The bis-amino acid derivatives (+)-6 and (+)-8 were synthesised (>95%
eel in mixtures with the corresponding diastereomers (dr:s 80:20 and 9
0:10, respectively) via asymmetric hydrogenation of the corresponding
bis-didehydroamino acid derivatives using [Rh((R,R)-DIPAMP)(COD)]BF4 a
s catalyst. (C) 1997 Elsevier Science Ltd.