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Asymmetric Synthesis using Sulfinimines (Thiooxime S-Oxides)
Journal article

Asymmetric Synthesis using Sulfinimines (Thiooxime S-Oxides)

Franklin A. Davis, Padma S. Portonovo, Rajarathnam E. Reddy, G. Venkat Reddy and Ping Zhou
Phosphorus, sulfur, and silicon and the related elements, v 120(1), pp 291-303
01 Jan 1997

Abstract

Sulfinimines α-amino acids, N-sulfinylaziridine 2-carboxylic acids β-hydroxy-α-amino acids
The addition of diethylaluminum cyanide and the lithium enolate of methyl α-bromoacetate to sulfinimines (thiooxime S-oxides) is highly diastereoselective affording α-amino nitriles and N-sulfinylaziridines, respectively. Hydroloysis of the α-amino nitriles gives α-amino acids in high ee, while hydrolysis of N-sulfinylaziridine carboxylic acids give β-hydroxy-α-amino acids. The latter compounds were transformed into (+)-thiamphenicol, a broad spectrum antibiotic and sphingosine, an important component of the sphingolipids.

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