In general, which of the following statements about nucleophilic reactions are true ? Select all that apply. | Steric hindrance in the substrate is irrelevant in SN1 reactions. E2 reactions rely on least substituted substrates. 1° are best while 3° are worst. Hindered strong bases are expected to result in Hoffman products whenever feasible.

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In general, which of the following statements about nucleophilic reactions are true? Select all that apply.

- ☐ Steric hindrance in the substrate is irrelevant in \( S_N1 \) reactions.

- ☑ E2 reactions rely on least substituted substrates. 1° are best while 3° are worst.

- ☑ Hindered strong bases are expected to result in Hoffman products whenever feasible.

- ☐ Polar aprotic solvents like HMPA, DMF, DMSO, acetonitrile, or acetone are preventing \( S_N1/E1 \) reactions.

- ☑ Polar protic, neutral or acidic solvents/environments like alcohols, water, or acidic solutions inhibit \( S_N2 \) mechanism.
Transcribed Image Text:In general, which of the following statements about nucleophilic reactions are true? Select all that apply. - ☐ Steric hindrance in the substrate is irrelevant in \( S_N1 \) reactions. - ☑ E2 reactions rely on least substituted substrates. 1° are best while 3° are worst. - ☑ Hindered strong bases are expected to result in Hoffman products whenever feasible. - ☐ Polar aprotic solvents like HMPA, DMF, DMSO, acetonitrile, or acetone are preventing \( S_N1/E1 \) reactions. - ☑ Polar protic, neutral or acidic solvents/environments like alcohols, water, or acidic solutions inhibit \( S_N2 \) mechanism.
1. Hindered strong bases are expected to result in Hoffman products whenever feasible. ☑️

2. Polar aprotic solvents like HMPA, DMF, DMSO, acetonitrile, or acetone are preventing S<sub>N</sub>1/E1 reactions.

3. Polar protic, neutral or acidic solvents/environments like alcohols, water, or acidic solutions inhibit S<sub>N</sub>2 mechanism. ☑️

4. E2 reactions rely on antiperiplanar conformation with respect to the leaving group and the hydrogen that are being eliminated. ☑️

5. E1 reactions do not depend on the performance of the leaving group.
Transcribed Image Text:1. Hindered strong bases are expected to result in Hoffman products whenever feasible. ☑️ 2. Polar aprotic solvents like HMPA, DMF, DMSO, acetonitrile, or acetone are preventing S<sub>N</sub>1/E1 reactions. 3. Polar protic, neutral or acidic solvents/environments like alcohols, water, or acidic solutions inhibit S<sub>N</sub>2 mechanism. ☑️ 4. E2 reactions rely on antiperiplanar conformation with respect to the leaving group and the hydrogen that are being eliminated. ☑️ 5. E1 reactions do not depend on the performance of the leaving group.
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