Epoxides and Alkenes

What is the product?

• an alkene

• an ether

• a substitution of OH with CH₃

• formation of a ketone

Mechanistically, the Williamson ether synthesis outlined is:

• an E1 process

• an SN1 process

• an E2 process

• an SN2 process

• None of the answers are correct

What would be the product?

• cyclopentene

• cyclopentane

• cyclopentanol

• methoxycyclopentane

Is there no reaction?

• This is false. You get phenol and a halogenated benzene as a product.

• True, Diaryl ethers like diphenyl ether are inert under ordinary acidic conditions because the generation of an aryl cation is an S_N1 process that is energetically unfavorable, and "back-side" attack at the ring carbon bound to oxygen is sterically unfavorable.

• True, Hydrogen halides are not strong enough acids to cleave an ether.

• This is false. It yields benzene and phenol.

• This is false. It yields 2 phenol compounds

The synthesis of epoxides by base treatment of halohydrins is an example of an intramolecular:

• dehydration reaction

• hydrolysis reaction

• Williamson ether synthesis

• SN1 reaction

What is the missing reagent?

• H₃O⁺

• HBr, H₂O

• Br₂

Choose the best reagent for carrying out the following reaction

• NaOCH₃, CH₃OH

• Hg(O₂CCF₃)₂, CH₃OH

• LiAlH₄ in ether, then H₃O⁺

• PCC, CH₂Cl₂

• CH₃MgBr in ether, then H₃O⁺

Choose the best reagent for carrying out the following reaction

• NaOCH₃, CH₃OH

• Hg(O₂CCF₃)₂, CH₃OH

• LiAlH₄ in ether, then H₃O⁺

• PCC, CH₂Cl₂

• CH₃MgBr in ether, then H₃O⁺

Choose the best reagent for carrying out the following reaction

• NaOCH₃, CH₃OH

• Hg(O₂CCF₃)₂, CH₃OH

• LiAlH₄ in ether, then H₃O⁺

• m-ClC₆H₄CO₃H

• CH₃MgBr in ether, then H₃O⁺

Choose the best reagent for carrying out the following reaction

• NaOCH₃, CH₃OH

• Hg(O₂CCF₃)₂, CH₃OH

• LiAlH₄ in ether, then H₃O⁺

• m-ClC₆H₄CO₃H

• CH₃MgBr in ether, then H₃O⁺