Fig. 2: Scope of acyclic α-substituted β-keto esters. | Nature Communications

Fig. 2: Scope of acyclic α-substituted β-keto esters.

From: Accessing acyclic vicinal tetrasubstituted stereocenters via biomimetic Cu/squaramide cooperative catalysed asymmetric Mannich reactions

Fig. 2

Conditions: 1 (0.10 mmol), 2 (0.12 mmol), CuTC (10 mol%), Cat-3 (20 mol%), DCM (2.0 mL), at 0 °C for 30–48 h. b Conditions: 1 (0.10 mmol), 2 (0.12 mmol), CuTC (10 mol%), Cat-3 (25 mol%), MgSO4 (1.0 eq), DCM (2.0 mL), at 0 °C for 30–48 h. Boc tert-butoxycarbonyl.

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