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Lowering the load: A very small amount of a binaphthol-derived monophosphoric acid organocatalyst accelerates an aza-ene-type reaction of N-benzoylimines with enecarbamates to provide β-aminoimines with high enantiomeric purity. This catalysis with a high substrate/catalyst(S/C) ratio provides a practical route to 1,3-diamine derivatives of synthetic and biological importance.
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Terada et al. (2006) studied this question.
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