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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

✍ Scribed by Thomas W. Ku; Fadia E. Ali; William E. Bondinell; Karl F. Erhard; William F. Huffman; Joseph W. Venslavsky; Catherine C.-K. Yuan

Publisher: Elsevier Science
Year: 1997
Tongue: French
Weight: 220 KB
Volume: 38
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(97)00570-4

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✦ Synopsis

An alternate enantiospecific synthesis of methyl (S)-7-tert-butoxycarbonyl-2,3,4,5-tetrahydro-4-methyl-3-oxo-lH-l,4benzodiazepine-2-acetate ( ) is reported. The key step, which involves an intermolecular displacement of the activated aryl fluoride (9) by L-aspartic acid [~-methyl ester, proceeds without racemization.

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