Stereoselective intramolecular aldol reactions of (4R)-3-(3-oxobutanoyl)-1,3-thiazolidine-4-carboxylates believed to be directed by ‘self-induced’ axial chirality
Abstract
Essentially complete retention of configuration accompanies the base-induced aldol reaction of the thiazolidinecarboxylate 6c to give the fused heterocycles 7c and 8c and their retroaldol–acylation reactions to give the bicycle 9c.
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