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■ Use of 1,3-Dioxin-4-ones and Their Related Compounds in Synthesis. Part 35. Synthesis of Optically Pure Fluoromalonamic Acids by Means of Asymmetric Fluorination of Chiral 1,3-Oxazine-4,6-diones

Masayuki Sato,* Noritaka Kitazawa, and Chikara Kaneko

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan

Abstract

Fluorination of chiral 5-substituted 1,3-oxazine-4,6-dione derivatives proceeded stereoselectively to give the 5-fluorooxazinediones, which were readily transformed to optically pure fluoromalonamic acids.