Access to fluoroalkylidene-oxetanes and -azetidines was realized from 3-oxetanone, 3-azetidinone, and fluorosulfones through the Julia-Kocienski reaction. This approach allows the preparation of new precursors of fluorinated four-mem-
A new class of thioamide‐substituted cinchona derivatives is reported. A convergent and practical approach was developed to insert the thioamide functional group onto the cinchonidine from readily available dithioesters. These organocatalysts were effective in asymmetric decarboxylative Mannich and protonation reactions of α‐amido‐substituted malonic acid half oxyesters (MAHOs), affording α,β‐ and α‐amino acid derivatives, respectively, in good yields and stereoselectivities.
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