Abstract

Organic Chemistry The binaphthyl framework has proven extremely effective in biasing a broad range of chemical reactions toward just one of two mirror-image products. The motif was first applied as a ligand in metal catalysis, and more recently as a conjugate base in acid catalysis. Gheewala et al. report a class of chiral carbon acids based around a cyclopentadiene framework that are easily accessible from readily available precursors. The compounds are showcased as highly selective catalysts for asymmetric Mukaiyama Mannich and oxocarbenium aldol reactions. Science , this issue p. [961][1] [1]: /lookup/doi/10.1126/science.aad0591

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