Table 3.

Additive effect on Stetter enantioselectivity

						ee, %
Entry	12	Base	Additive	Equiv	Yield, %	W/o additive	W/additive
1	12ca	10	7c	1.05	78	86	93
2	12fa	11	7c	1.05	63	83	89
3	12ca	10	14a	0.1	90	86	94
4	12fa	11	14a	0.1	84	83	92