Tetrahedron Letters p. 3131 - 3134 (1997)
Update date:2022-08-05
Topics:
Ku, Thomas W.
Ali, Fadia E.
Bondinell, William E.
Erhard, Karl F.
Huffmann, William F.
et al.
An alternate enantiospecific synthesis of methyl (S)-7-tert-butoxycarbonyl-2,3,4,5-tetrahydro-4-methyl-3-oxo-1H-1,4-benzodiazepine-2-acetate (5) is reported.The key step, which involves an intermolecular displacement of the activated aryl fluoride (9) by L-aspartic acid β-mehtyl ester, proceeds without racemization.
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