Table 2.
Redox-neutral coupling of alcohols 1a–1j with bis-Boc-carbonate 2a to form adducts 3a–3j.a
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Yields are of material isolated by silica gel chromatography. Enantioselectivity was determined by chiral stationary phase HPLC analysis. See Supporting Information for further experimental details.
(S)-Ir-II (5 mol %).
DME (0.2 M), 60 °C.