(R,R)-,O,O′-(2,2-Dichloroviny)tartaric Acid: An Easily Synthesized Optically Pure Vinylether. A New Synthesis of (R,R)-O,O′- Diethyltartaric Acid

Abstract
The chiral title compounds 2a and 6 were prepared from tartaric acid and chloral hydrate followed by reduction steps. (2,2-Dichlorovinyloxy)maleic acid (5) was prepared from 2a via thermal elimination of one dichlorovinyloxy group.

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