P. Gmeiner et al., 2-DIBENZYLAMINOBUTANE-1,4-DIOL - A VERSATILE INTERMEDIATE FOR A CHIROSPECIFIC BETA-AMINO ACID SYNTHESIS, Tetrahedron letters, 36(3), 1995, pp. 381-382
Starting from the chiral building block 1, which is readily available
from natural aspartic acid, a concise and versatile synthesis of optic
ally active beta-amino acids including beta-proline derivatives is rep
orted. Regioselective transformations of the 1,4-bis-electrophile 2 ar
e facilitated by an anchimeric participation.