Suggest the reagents used to effect the transformations shown.
(c)

검증된 단계별 안내

Identify the starting material and the products. The starting material is an ether with a phenyl group and a cyclopropyl group. The products are toluene and cyclopropanol.

Recognize that the transformation involves breaking the ether bond and forming an alcohol group on the cyclopropyl moiety while converting the phenyl group to toluene.

Consider the mechanism of ether cleavage. Acidic conditions are typically used to cleave ethers, often involving a strong acid like HBr or HI.

Propose the use of a strong acid such as HBr or HI to cleave the ether bond. The acid will protonate the ether oxygen, making it a better leaving group.

The protonated ether can then undergo nucleophilic attack by the halide ion, leading to the formation of toluene and cyclopropanol as the final products.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Ether Cleavage

Ether cleavage involves breaking the C-O bond in ethers, typically using strong acids like HI or HBr. The reaction often results in the formation of alcohols and alkyl halides. In this transformation, the ether is cleaved to produce a phenol and a cyclic ether, indicating the use of acidic conditions to facilitate the cleavage.

Acidic Conditions

Acidic conditions are crucial for ether cleavage, as they protonate the ether oxygen, making the C-O bond more susceptible to nucleophilic attack. Common acids used include hydrobromic acid (HBr) or hydroiodic acid (HI), which can effectively cleave ethers to form alcohols and other products, as seen in the transformation to phenol and a cyclic ether.

Phenol Formation

Phenol formation in ether cleavage reactions occurs when the aromatic ring stabilizes the resulting carbocation, allowing the formation of a stable phenol product. This stability is due to resonance within the aromatic ring, which is a key factor in the transformation shown, where the ether is cleaved to yield a phenol and a cyclic ether.

Suggest the reagents used to effect the transformations shown.(c)