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Ligand Effects on Asymmetric Pyrazole Hydroamination
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Reaction conditions: 1a (0.1 mmol), 2a (0.5 mmol), [Pd(η3-C3H5)Cl]2 (5 mol%), Ligand (15 mol%), CPME (0.4 mL), 23 °C, 18–24 h. Isolated yields. Regioselectivity determined by 1H NMR analysis of the unpurified reaction mixture. Enantioselectivity determined by chiral SFC. DTBM = 3,5-di-tert-butyl-4-methoxyphenyl.
