Hydrogen azide-amine systems as an azide nucleophile for substitutions of sulfonates, halides, and vicinal disulfonates
摘要:
Hydrogen azide-alkylamine combination turned out to ensure the displacement of simple primary or secondary sulfonates, halides, and vicinal disulfonates with an azido-group in which an enhanced reactivity is generally achieved as compared with a case of traditional alkali metal azides.
Preparation of Enantiomerically Pure 1,3-Butanediol from Threonine
摘要:
Enantiomerically pure R or S 1,3-butanediols were prepared in four steps from L or D threonine by nitrous deamination in the presence of bromide ion followed by esterification and reduction.