Tetrahedron Asymmetry p. 1919 - 1932 (1995)
Update date:2022-08-02
Topics:
Angibaud, P.
Chaumette, J. L.
Desmurs, J. R.
Duhamel, L.
Ple, G.
et al.
Optically active (S)-2-bromo- and 2-chloro-alkanoic acids 6 and 7 have been obtained via the diastereoselective halogenation of chiral silyl ketene acetals 3a-f, and subsequent saponification of the resulting crude esters.Examples characterized by e.e. values up to 95percent are reported.The diastereoface selectivity is independent of the silyl ketene acetal E/Z configuration.
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