Finally, we moved to the study of the substitution on the alkyne. We observed that a strong electron withdrawing nitro group in para-position of the phenyl ring led to high enantioselectivity, as showed with compounds 4bp and 4ba which were obtained in 55% yield/98:2 er and 87% yield/97:3 er, respectively. Ortho-substitution with a bromine group gave product 4ca in 82% yield and 93:7 er. Importantly, silyl alkynes giving access to synthetically useful terminal alkynes were also tolerated. Product 4de was obtained in moderate yield (60%), but excellent er (99:1). A 93:7 diastereoselectivity was obtained in the case of enantiopure alcohol 3b. Compound 4eb containing a cyclopropylalkyne was formed in 63% yield and 92:8 diastereoselectivity.