Midterm 3

Question 1

Terminal Alkyne + 1 mol NaNH2 + haloalkane

Answer 1

Attach alkane portion to terminal alkyne

Question 2

Terminal Alkyne + 1 mol NaNH2

Answer 2

alkyne anion HCC:-

Question 3

Internal Alkene + Br2 + 2 mol NaNH2

Answer 3

Vicinal dihalide ->internal alkyne

Question 4

Terminal Alkene + Br2 + 3 mol NaNH2 + H3O+

Answer 4

Terminal Alkyne

Question 5

Terminal Alkyne -> aldehyde

Answer 5

1. (sia)2BH
2. H2O2, NaOH
   enol intermediate, Non- Markovnikov

Question 6

Terminal Alkyne -> Ketone

Answer 6

1. HgSO4
2. H2SO4, H2O

enol intermediate