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Expanded substrate scope using allylic carbonates as electrophiles
Conditions: Polyol 15a (0.2 mmol), 16i (0.24 mmol), Rh(cod)2BF4 (5 mol%), (S)-NPN (6 mol%), organoboron catalyst 27 (30 mol%), in CH3CN (1 ml), argon, 50 °C, 18-48 h. r.r. and d.r. were determined by analysis of the crude 1H NMR spectra. [a] 10 mol% Rh(cod)2BF4, 12 mol% (S)-NPN, 70 °C. cod,1,5-cyclooctadiene; TBS, tert-butyldimethylsilyl.
