Title

Stereocontrolled Iodolactonization of Erythro and Threo Tertiary Amides

Document Type

Article

Publication Date

7-1-1990

Abstract

A series of α-mono and dialkyl-β-oxygenated (hydroxyl and alkyl ester) tertiary amides were subjected to iodolactonization and it was observed that with only 1 exception, (threo11b), all of the compounds cyclized with useful levels of stereoselection (at least 3:1). While the origin of this effect is obscure, these results suggest that in such amide substrates with at least one substituent larger than methyl α to the amide, iodolactonization is a viable strategy for the stereocontrolled preparation of highly substituted γ-butyrolactones.

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