Which of the following alkyl bromides reacts the slowest with NaSCH_3 in DMF? 1

Question

Which of the following alkyl bromides reacts the slowest with NaSCH_3 in DMF? 1 2 3 4 What is the major organic product obtained from the following reaction? 1 2 3 4 What is the major organic product obtained from the following reaction? 1 2 3 4 Which of the following is not a characteristic of S_N1 reactions? the electrophilic carbon undergoes inversion of stereochemistry the rate is proportional to the concentration of substrate the reaction proceeds faster in a more polar solvent the rate is independent of the concentration of nucleophile

Explanation / Answer

Ans 6 : a. 1

Explanation: among all four alkyl halides first one is more sterically hinderd so nucleophilic displacement by NaSCH3 will take place slow.

Ans 7: a. 1

Explaination: its simple nucleophilic sustitution reaction since there is no strong base so the possibilites for elimination can be ruled out.

Ans 8: b. 2

Explaination: since 3o teriary radical is more stable compare to 2o and 1o (secondry and primary)

Ans 9: a.1

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