8+ cat.NaOH H3C一HH3C-CH21 OH CHa OH HC-HC-C-CH-
Page 1 1. Which product would you not expect in the crossed aldol reaction between acetaldehyde and propionaldehyde? H3C C O H CH2 C O H3C H ? cat. NaOH H2O + A) CH2 C O H H2C C OH H H3C B) CH C O H H3C C CH3 H OH C) CH2 C O H H3C C OH H D) CH C O H H3C C OH H CH3 E) CH C O H H2C C OH H CH3 H3C Ans: B
2.What organic molecule would you expect to be present in significant amounts under the following conditions? only(S)enantiome c Page2
Page 2 2. What organic molecule would you expect to be present in significant amounts under the following conditions? O CH3 H cat. KOD ? only (S) enantiomer excess D2O A) DO CH3 H OH B) O CH3 D C) O D) O CH3 D racemic E) O CD3 D racemic Ans: D
What reactants would be used to produce cinnamaldehyde H,0 Page 3
Page 3 3. What reactants would be used to produce cinnamaldehyde? CHO ? cat. NaOH H2O A) CHO + CH3CHO B) CHO H C CHO O + C) CH3 O + CH2=O D) O CHO + E) CHO H3C C CHO O + Ans: A
What would you expect to result from the following reaction? 1.(CH3)2CuLi 2.H20 C) D) Page 4
Page 4 4. What would you expect to result from the following reaction? O ? 1. (CH3)2CuLi 2. H2O A) O B) OH C) OH CH3 D) O E) O Ans: A
5.Indicate to which side,if any,the following equilibrium lies H'or HO D erpa Major product is an enol or enolate ion,respectively Ans: Page
Page 5 5. Indicate to which side, if any, the following equilibrium lies: O O H+ or HOA) To the right B) To the left C) Equally to right and left D) Cannot be predicted E) Major product is an enol or enolate ion, respectively Ans: A