Table 5. Enantioselective addition of phenylacetylene to N-benzylideneaniline in various solvents.

Entry	Solvent	Yield, %	ee %
1	Toluene	78	96
2	Benzene	74	97
3	Heptane	80	99
4	Dichloromethane	79	98
5	Chloroform	81	97
6	1,2-Dichloroethane	71	99.5
7	Carbon tetrachloride	25	99.4
8	1,4-Dioxane	82	98
9	Tetrahydrofuran	65	96
10	Ethyl acetate	53	98
11	Acetone	80	99
12	N,N-dimethylformamide	80	97
13	Acetonitrile	82	99
14	Methanol	85	88
15	Triethylamine	48	97
16	Water	71	84