Abstract
Abstract An open-chain carboxylic acid host with a chiral sulfinyl group (4) was synthesized from 3,3′-thiobis[(5-tert-butyl-2-hydroxyphenyl)acetic acid] (2) by oxidation of the epithio linkage with mCPBA, followed by acid-catalyzed monoesterification with propan-1-ol. The monoester was resolved via diastereomeric salt formation using quinidine as a resolving agent. The absolute configuration of (+)-4 was assigned to be (R) by X-ray analysis.
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