Identify the mechanism by which each of the reactions above proceeds from among

Question

Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - j for your answers.

dry ether OH + MgBr-CH2CH3 - + -O MgBr + CH3CH3 2. & + Na Oet Na OEt a = Proton transfer b = Lewis acid/base e= Electrophilic addition f= E1 Elimination g = E2 Elimination h = Sy1 Nucleophilic substitution i= SN2 Nucleophilic substitution j= Electrophilic aromatic substitution DMSO/H;0 or. e. o. - N-Br N-H 2. AAMOH + NaH OH + NaH No na + H2 a = Proton transfer b= Lewis acid/base e = Electrophilic addition f=E1 Elimination g = E2 Elimination h = SN1 Nucleophilic substitution i= SN2 Nucleophilic substitution j= Electrophilic aromatic substitution

Explanation / Answer

1)

here grignard reagent is base and cyclopentanol act as acid.

so this is Lewis acid base reaction.

option B is the answer.

2)

in this reaction OET- act as nucleophile and OEt- attack to the epoxide.

so option i ) SN2 nucleophilic substitution is the answer.

1)

electrophilic addition is the answer.

here Br+ act as electrophile.

2)

option B. Lewis acid/base is the answer.

here NaH act as base and alcohol act as acid.

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