Table 1.

Comparison of Ni-H and Co-H catalyzed enantioselective anti-Markovnikov hydroalkylation of alkenes^a

Entry	Metal salt	Solvent	Yield (%)	er
1	NiBr2·DME	DME	9	69:31
2	NiBr2·DME	THF	trace	N.D.
3	NiBr2·DME	DMA	trace	N.D.
4	NiBr2·DME	DMF	trace	N.D.
5	CoBr2·DME	DME	98	95:5
6	CoBr2·DME	THF	75	95:5
7	CoBr2·DME	DMA	48	57:43

^a 1a (0.10 mmol), 2a (0.20 mmol, 2.0 equiv), metal salt (10 mol%), L6 (15 mol%), CsF (0.20 mmol, 2.0 equiv), DEMS (0.20 mmol, 2.0 equiv), solvent (0.5 mL, 0.2 M), 0 °C, 24 h. Isolated yields. Er value was determined by chiral HPLC analysis. DEMS = diethoxymethylsilane.