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. 2019 Feb 18;10(13):3733–3737. doi: 10.1039/c8sc05225e

Scheme 2. Evaluation of amino acid additives. aReaction conditions: 1a (0.05 mmol), 2a (0.1 mmol), [Cp*Rh(MeCN)3][(SbF6)2] (10 mol%), Fmoc-Pro-ONa (40 mol%), solvent (0.5 mL), temperature, 36 h. bYield calculated by 1H NMR with methyl para-nitrobenzoate as internal standard.

Scheme 2