Simplified Chiral Aminolysis of Prochiral σ-Symmetric Dicarboxylic Anhydrides with Sodium Salt of 4(S)-IPTT

Abstract
Highly enantioselective chiral aminolysis of cis-4-cyclo-hexen-1,2-ylenebis(carboxylic acid) anhydride has been performed by employing sodium salt of 4(R)-isopropyl-1,3-thiazolidine-2-thione in THF-DMSO. Other chiral aminolyses of prochiral σ-symmetric dicarboxylic anhydrides such as cis-cyclobutan-1,2-ylenebis(carboxylic acid) anhydride, meso-2,4-dimethylglutaric anhydride, and 3- [(t-butyldimethylsilyl) oxy] glutaric anhydride were similarly investigated.

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