H. Amii et al., NOVEL INTRAMOLECULAR REARRANGEMENT OF 3-BROMO-3,3-DIFLUOROALANINE SCHIFF-BASES VIA RADICAL IPSO-SUBSTITUTION AT THE AROMATIC RING, Chemical communications, (17), 1998, pp. 1845-1846
3-Bromo-3,3-difluoroalanine Schiff bases are synthesized by bromodiflu
oromethylation of the corresponding glycine Schiff bases with CF2Br2;
their intramolecular rearrangement involving radical ipso-substitution
at the aromatic ring of the imine moiety provides 3,3-difluoro-3-aryl
propanoates in good yields.