Show how to make these deuterium-labeled compounds, using CD3MgBr and D2O as your sources of deuterium, and any non-deuterated starting materials you wish.c. CD3CH2CH2OH

Ch.10 - Structure and Synthesis of Alcohols

Wade9th EditionOrganic ChemistryISBN: 9780135213728당신이 사용하는 게 아니라요?교과서 변경

모든 교과서

Wade 9th Edition

Ch.10 - Structure and Synthesis of Alcohols

문제 55c

10장, 문제 55c

Show how to make these deuterium-labeled compounds, using CD₃MgBr and D₂O as your sources of deuterium, and any non-deuterated starting materials you wish.
c. CD₃CH₂CH₂OH

검증된 단계별 안내

Step 1: Begin by identifying the target compound, CD3CH2CH2OH, which is ethanol with a deuterium-labeled methyl group (CD3). The goal is to incorporate deuterium into the methyl group while maintaining the ethyl and hydroxyl groups.

Step 2: Use CD3MgBr (deuterium-labeled methyl magnesium bromide) as the Grignard reagent. This reagent will provide the CD3 group during the reaction. Select a suitable non-deuterated starting material, such as ethylene oxide (C2H4O), which can react with the Grignard reagent to form the desired alcohol.

Step 3: React ethylene oxide (C2H4O) with CD3MgBr in an anhydrous ether solvent. The Grignard reagent will attack the electrophilic carbon in the ethylene oxide, opening the epoxide ring and forming CD3CH2CH2OMgBr as an intermediate.

Step 4: Quench the reaction by adding D2O (deuterium oxide). This step will protonate the alkoxide intermediate (CD3CH2CH2OMgBr), replacing the magnesium bromide with a hydroxyl group and yielding the final product, CD3CH2CH2OH.

Step 5: Purify the product using standard organic chemistry techniques, such as distillation or extraction, to isolate the deuterium-labeled ethanol (CD3CH2CH2OH). Confirm the structure using spectroscopic methods like NMR to verify the incorporation of deuterium.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

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

Deuterium Labeling

Deuterium labeling involves substituting hydrogen atoms in organic compounds with deuterium, a stable isotope of hydrogen. This process is crucial in tracing reaction pathways and studying mechanisms in organic chemistry. Deuterium can be introduced into molecules using deuterated reagents, such as CD3MgBr, which provides a source of deuterium for the synthesis of labeled compounds.

Grignard Reagents

Grignard reagents are organomagnesium compounds that are highly reactive and used to form carbon-carbon bonds in organic synthesis. In this context, CD3MgBr acts as a deuterated Grignard reagent, allowing for the introduction of a deuterated methyl group into a target molecule. Understanding the reactivity and mechanisms of Grignard reagents is essential for successfully synthesizing complex organic compounds.

Alcohol Synthesis

The synthesis of alcohols from alkenes or other functional groups is a fundamental reaction in organic chemistry. In this case, the target compound CD3CH2CH2OH can be synthesized through nucleophilic addition of the deuterated Grignard reagent to a suitable carbonyl compound, followed by hydrolysis with D2O. Recognizing the steps involved in alcohol formation is key to constructing the desired deuterium-labeled compound.