Identify the missing reagent in the reaction shown below. A. diethyl carbonate,
ID: 1021274 • Letter: I
Question
Identify the missing reagent in the reaction shown below. A. diethyl carbonate, (EtO)_2C-O B. ethy formate, HCO_2Et C. ethyl acetate, CH_3CO_2Et D. diethyl oxalate, EtO_2CCO_2Et What was the starting material in the reaction below? A. 2,6-dimethylcyclohexane B. 2,6-dimethylcyclohexane C. 2,6-dimethylcyclohex-2-enone D. Aniline What will be the major product of the following reaction? A. C B. A C. B D. D The reaction below is a direct enolate alkylation. It has been found that this reaction only works well with unhindered methyl and 1 degree alkyl halides. Pick the statement that best explains this observation. A. The nucleophilic enolate requires a reaction center that has a positive charge. B. Hindered alky halides do not undergo S_N2 reactions. C. Methyl and 1 degree alkyl halides can form carbocations that can readily react with the nucleophilic enolate. D. Hindered alkyl halides do not undergo S_N1 reactions.Explanation / Answer
7.
diethyl carbonyl is the best reagent to achieve the desired carbonyl group
so option a is the correct answer
8.
this is the micheal addition reaction
in order to achieve the desired target molecule
option c is the correct starting material
so option c is the correct answer
9.
option D is the correct answer
10.
option A is the correct state ment for the given reaction