(4)Circle the reagent in each pair that will react the fastest in an SN2 reaction with OH? Explain. (You may want to draw out the structures) a. CH3Br or CH₂I b. (CH3)3CC1 or CH3C1
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- Consider 3-iodo-2,3-dimethylpentane and 3-iodo-2methylpentane. a. which reacts faster in an Sn2 reaction? Explain. b. which reacts faster in an E2 reaction? Explain.6) Complete the following mechanism. (D and SN2) H Br. NaH "H: " 7) Complete the following mechanism. (D and SN2) H NaH "H: " Br. SN2 Good Nucleophile SN2 ether THF2. Draw the structures and explain why CH3CH₂O and CH3CO₂ are good nucleophiles but CH3SO3, water, and alcohols (R-OH) are poor nucleophiles. Propose a 'cutoff' for the amount of negative charge needed to be a good nucleophile. CH3CH₂O CH3CO₂ CH3SO3 H₂O CH₂OH
- Which of the following compounds reacts faster in an elimination reaction with KOH? Also provide the major product(s) (if any) for each elimination reaction. Br Br )...(a)Which reagent would help in this workup please NaCN CH3CO₂H a2. a) Predict possible product for each transformation. i. E1O2C. NaOEt ii. OCH3 OCH3 ii. CHO MENH2, H20 + НOОC. СООН CHO
- Rank these in order of increasing reactivity in an SN1 reactionPick the reactant or solvent in each part that gives the faster SN1 reaction.a. reaction of H2O with (CH3)3CCl or (CH3)3CIb. reaction of CH3OH with (CH3)3CBr or (CH3)2CHCH2Brc. reaction of CH3CH2CH(I)CH3 with CH3CH2OH in water or DMSOWhich benzylic halide reacts faster in an SN1 reaction? Explain.
- 3. Show a mechanism for the following reaction. Q.XX NO₂ NO₂Which compound in each pair reacts faster in nucleophilic substitution? a. CH;CH2CH2CI or CH;CH2CH2I b. (CHa),CBr or (CHs)3CI c. (CHal3COH or (CHa),COH2* d. CH;CH,CH,OH or CH3CH2CH20COCH,9. Which SN1 reaction in each pair is faster? a) CI b) (CH3)3CCI + H2O > H2O (CH3)3CBR + H20 → CI H,O 206