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S)-2-Alkyl-2-phenylcycloalkanones have been synthesized in high optical yields using enamines derived from r-leucine r-butyl ester or valine r-butyl ester and 2-phenylcycloalkanones (Scheme 53). ... [Pg.36]

See other pages where Valine r-butyl ester is mentioned: [Pg.229] [Pg.502]