Exhibit 1a Select the best reagent or sequence of reagents from the list provided which would best accomplish each transformation below. Place the letter corresponding to the reagent(s) in the blank to the teft of each reaction. Each transformation requires only one answer. a. H2SO4,H2O,HgSO4 e. 1. Bre, CCl4 b. H2, Lindlar 2NaNH2,NH3 c. 1.BH3,THF f. 1. HCl 2. H2O2 2. NaNH2,NH3 d. 1. NaNH2,NH3 g. LiNH3 2. CH3CH2I h. 1. NaNH2,NH3 2. CH3CH2CH2I 28 29 30. HCCHCH3CH2CH2CCH 31 32. (CH3)2CHCH2CCH