T. Ibuka et al., AN EFFICIENT SYNTHESIS OF (+ -)-4-AMINO-3-(4-CHLOROPHENYL)-BUTYRIC ACID - (BACLOFEN)/, Synthetic communications, 25(12), 1995, pp. 1777-1782
A new preparation of baclofen is proposed. The key step involved a reg
ioselective ring opening of 2-phenylaziridine with allylmagnesium brom
ide. Further oxydation of the side chain give access to 4-phenyl-pyrro
lidin-2-one and to baclofen.