Table 3.

Catalytic Asymmetric Aryl Additions to Aldehydes with ArZnBu Generated from Aryl Bromides

entry	ArBr with Ar=	product	#	yield	ee (%)
1	Ph2Zn/Et2Zn		5	- -	97
2			5	90	97
3			6	95	88
4			7	75	90
5			8	80	96
6			9	96	93
7			10	84	93
8			11	82	83
9			12	84	78
10			13	75	97
11			14	64	88
12			15	74	84
13			4	78	95
14			16	55	87
15			17	68	81
16			18	73	95
17			19	79	96
18			20	76	82