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Ch. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds
Wade - Organic Chemistry 9th Edition
Wade9th EditionOrganic ChemistryISBN: 9780135213728당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Wade 9th EditionCh. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds문제 61(1)
22장, 문제 61(1)

1. Rank the following compounds in order of increasing acidity.

검증된 단계별 안내
1
Identify the functional groups present in each compound. Functional groups such as carboxylic acids, phenols, alcohols, and amines significantly influence acidity.
Analyze the stability of the conjugate base formed after deprotonation of each compound. A more stable conjugate base corresponds to a stronger acid.
Consider the effects of resonance stabilization. If the conjugate base can delocalize its negative charge through resonance, the compound will be more acidic.
Evaluate the inductive effects of electronegative atoms or groups. Electronegative substituents near the acidic proton can stabilize the conjugate base through electron withdrawal, increasing acidity.
Rank the compounds based on the combined effects of resonance, inductive effects, and the inherent acidity of the functional groups. Start with the least acidic compound and progress to the most acidic.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

주요 개념

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

Acidity and pKa

Acidity refers to the tendency of a compound to donate protons (H+) in a solution. The strength of an acid is often measured using the pKa value, where lower pKa values indicate stronger acids. Understanding the relationship between acidity and pKa is crucial for ranking compounds based on their acidic strength.
추천 영상:
07:45
Identifying pKa values

Resonance Stabilization

Resonance stabilization occurs when a molecule can be represented by multiple valid Lewis structures, allowing for the delocalization of electrons. This delocalization can stabilize the conjugate base formed after deprotonation, thereby increasing the acidity of the original compound. Recognizing resonance structures is essential for predicting acidity trends.
추천 영상:
03:43
The radical stability trend.

Inductive Effect

The inductive effect refers to the electron-withdrawing or electron-donating influence of substituents on a molecule. Electronegative atoms or groups can stabilize the negative charge on a conjugate base through inductive withdrawal, enhancing acidity. Understanding how different substituents affect acidity through this effect is key to ranking compounds.
추천 영상:
01:47
Understanding the Inductive Effect.
관련 실천
교과서 질문

For each molecule shown below,

1. indicate the most acidic hydrogens.

2. draw the important resonance contributors of the anion that results from removal of the most acidic hydrogen.

(h)

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교과서 질문

For each molecule shown below,

1. indicate the most acidic hydrogens.

2. draw the important resonance contributors of the anion that results from removal of the most acidic hydrogen.

(e)

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교과서 질문

Predict the products of the following aldol condensations. Show the products both before and after dehydration.

(a)

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교과서 질문

2. Indicate which compounds would be more than 99% deprotonated by a solution of sodium ethoxide in ethanol.

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1
rank
교과서 질문

Predict the products of the following aldol condensations. Show the products both before and after dehydration.

(b)

667
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교과서 질문

For each molecule shown below,

1. indicate the most acidic hydrogens.

2. draw the important resonance contributors of the anion that results from removal of the most acidic hydrogen.

(g)

729
views