Question

For the synthetic scheme below, please indicate the following: reagents and reaction conditions step (above/below the arrows), name of each reaction, and the generic name of each product (15 pts). for each MgBr Names of reactions: Give generic names of compounds: B: D: G: ctly draw the mechanism for the reaction above 1. The first step in that reaction is A) Deprotonation of acetylenic H atom with R-X B) Formation of acetylide anion. C) Deprotonation of acetylenic H atom with H2N D) Deprotonation of acetylenic H atom with Na". E) Both B and C are correct. The second step in that reaction is 2. A) Deprotonation of hydronium ion with sodium amide. B) Formation of acetylide anion. C) Nucleophilic attack by the alkyl halide on the acetylide anion. D) Deprotonation of acetylenic H atom with Na* E) Nucleophilic attack by the acetylide anion on the alkyl halide. 3. This reaction can be best classified as reaction. A) Reduction B) Propagation C) Oxidation D) chain-extension E) hydroxylation The electrophile in the second step of this reaction is 4. A) Sodium ion B) Carbon atom bonded to the halogen C) Amide ion D) Acetylide ion E) The triple bond

Answer 1

1-B

BT DE KOH Br alcoh kOH Nam of reachon D-) E → Elimination 'ren GConjugates poyenes

2-E

3-D

4-B