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1 MeOH 36 11 n.d. n.d. 2 THF 36 16 n.d. n.d. 3 CH2Cl2 36 22 n.d. n.d. 4 Toluene 36 9 n.d. n.d. 5 CHCl3 36 31 n.d. n.d. 6 EtOH 36 21 n.d. n.d. 7 CH3CN 36 33 n.d. n.d. 8 H2O 36 8 n.d. n.d. 9 DMF 36 56 75/25 68 10 DMSO 36 68 80/20 74 11 DCE 24 80 85/15 80 12 DCE TFA 24 87 88/12 84 13 DCE HCO2H 24 86 90/10 86 14 DCE CH3CO2H 24 87 92/8 90 15 DCE PhCO2H 24 92 97/3 95 Unless otherwise noted, all reactions were carried out in solvent (1 mL) using 5a (0.14 mL, 5 equiv.) and 6a (0.25 mmol, 1 equiv.) in the present of 10 mol % 2 at rt. Determined by H NMR. Determined by chiral HPLC analysis (chiralpak AS-H). Introduction

Asymmetric Michael Addition of Ketones to Nitroolefins Catalyzed by a New Chiral Catalyst