a Reaction conditions: 1a (0.2 mmol), 2a (0.2 mmol), 3a (0.1 mmol, 1.0 equiv.), copper salt (10 mol %), chiral ligand ( With the optimized reaction conditions, we investigated the generality of this asymmetric three-component arylative radical crosscoupling reaction by examining a representative range of commercially available boronic acids with 2-vinylnaphthalene 1a and oxime carbonate 2a (Table ). The scope appears to be relatively general in the context of the boronic acids. In addition to the parent boronic acid 3a, the array of aryl boronic acids 3b-h bearing electron-withdrawing (e.g., F, Cl, Br) or electron-donating (e.g., Ph, Me, OMe) substituent at the para-position of the phenyl ring all participated in the cross-coupling reaction, affording the corresponding products 4b-h in moderate to very good yields (60-82%) and with high enantioselectivities (86-92% ee) using either 5 or 10 mol% catalyst. In the cases of electron-rich aryl boronic acids such as 3f and 3g, the yields are slightly diminished due to formation of small amounts of two-component coupling byproducts of aryl boronic acids with oxime carbonate 2a. As shown in the reactions of 3i-k, variations in the substitution pattern of the phenyl group have no deleterious influence on both reaction efficiency and enantioselectivity, with the products 4i-k being obtained in 72-81% yields with 88-90% ee. Once again, boronic acids with S-(3l, 3m), O-(3n), N-heteroaromatic (3o, 3p), and fused aromatic (3q) ring all participated in the reaction smoothly to afford the desired crosscoupled products 4l-q in yields ranging from 46-78% with 74-90% ee.