Acyclic β-amino acid catalyzed asymmetric anti-selective Mannich-type reactions

The ability of a primary amine containing acyclic β3-amino acids to catalyze direct asymmetric anti-selective Mannich-type reactions is presented. The reactions are generally highly diastereo- and enantioselective to give the corresponding Mannich products with up to >19:1 dr (anti/syn) and 88–99% ee.

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