Table 2. Allylic alkylation of 1,3-diphenylprop-2-enyl acetate (2) with dimethyl malonate and (Pd-p12)_a or (Pd-p12)_b as ligand.

No.	Catalyst	Pd,* mol %	Temp., °C	Time, hr	Yield,† %	ee,‡ %
1	(Pd-p12)a	25	25	0.02	95§	1.8
2	(Pd-p12)a	25	0	2	99	4.5
3	(Pd-p12)a	25	-20	12	99	2.6
4	(Pd-p12)a	25	-40	72	0¶	—
5	(Pd-p12)b	25	25	0.02	82§	3.0

Reaction was in CH₂Cl₂, 30 mol % repeating units (based on substrate 2).

^*Based on substrate 2.

^†Yields of isolated product.

^‡Determined by ¹H-NMR in the presence of 20 mol % of the chiral shift eagent [Eu(hfc)₃], hfc = 3-(heptafluoropropylhydroxymethylene)-d-camphorate. All products were (R)-configured (determined by comparison with ref. 28).

^§Quantitative conversion according to TLC.

^¶Insolubility of KOAc in CH₂Cl₂ at -40°C prevented reaction.