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- W2170996114 abstract "Diastereoselective alkylation of (R)-(+)-camphor-based glycine or alanine esterimines with 3-bromo-2-fluoropropene after hydrolytic deprotection gave (R)-(+)-2-amino-4-fluoropent-4-enoic acid with 38% overall yield and 90% ee, or (R)-(+)-2-amino-4-fluoro-2-methylpent-4-enoic acid (19% overall yield, 59% ee), respectively. Deprotection under drastic conditions was accompanied by hydrolysis of the fluorovinyl moiety to give (R)-(−)-2-amino-4-oxopentanoic acid hydrochloride with 28% overall yield and >95% ee. Ab initio calculations of acetamide and 2-fluoropropene as models for a primary amide or a fluorovinyl group despite of their different electronic structure show a similar electrostatic potential on the van der Waals surface suggesting their isosteric behavior." @default.
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- W2170996114 date "1999-08-01" @default.
- W2170996114 modified "2023-09-27" @default.
- W2170996114 title "Enantioselective syntheses of 2-amino-4-fluoropent-4-enoic acids. Isosteres of asparagine" @default.
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- W2170996114 doi "https://doi.org/10.1016/s0040-4020(99)00581-5" @default.
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