ORG CHEM W/ EBOOK & SW5 + STUDY GUIDE
ORG CHEM W/ EBOOK & SW5 + STUDY GUIDE
2nd Edition
ISBN: 9780393666144
Author: KARTY
Publisher: NORTON
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Chapter 14, Problem 14.61P
Interpretation Introduction

(a)

Interpretation: Which one of the given pair of molecules should have the more acidic α-hydrogen is to be determined.

Concept introduction:

The strength of an acid depends on the stability of the conjugate base formed by the removal of the proton. The higher the stability of the conjugate base, the stronger the acid.

The stability of the conjugate base depends on several factors, the electronegativity of the atom that bears the negative charge, possible delocalization of the charge because of resonance, and the hybridization of the atom that bears the charge.

If the electronegativity and hybridization are similar, the resonance stabilization of the charge determines the stability of the conjugate base. The more the number of atoms over which the charge is delocalized, the higher the stability of the conjugate base, and hence the higher the strength of the acid. Aromaticity also plays a role in stabilization. The order of stability of cyclic conjugate bases with double bonds is aromatic > nonaromatic > antiaromatic.

Interpretation Introduction

(b)

Interpretation: Which one of the given pair of molecules should have the more acidic α-hydrogen is to be determined.

Concept introduction:

The strength of an acid depends on the stability of the conjugate base formed by the removal of the proton. The higher the stability of the conjugate base, the stronger the acid.

The stability of the conjugate base depends on several factors, the electronegativity of the atom that bears the negative charge, possible delocalization of the charge because of resonance, and the hybridization of the atom that bears the charge.

If the electronegativity and hybridization are similar, the resonance stabilization of the charge determines the stability of the conjugate base. The more the number of atoms over which the charge is delocalized, the higher the stability of the conjugate base, and hence the higher the strength of the acid. Aromaticity also plays a role in stabilization. The order of stability of cyclic conjugate bases with double bonds is aromatic > nonaromatic > antiaromatic.

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#1. Retro-Electrochemical Reaction: A ring has been made, but the light is causing the molecule to un- cyclize. Undo the ring into all possible molecules. (2pts, no partial credit) hv
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I have a question about this problem involving mechanisms and drawing curved arrows for acids and bases. I know we need to identify the nucleophile and electrophile, but are there different types of reactions? For instance, what about Grignard reagents and other types that I might not be familiar with? Can you help me with this? I want to identify the names of the mechanisms for problems 1-14, such as Gilman reagents and others. Are they all the same? Also, could you rewrite it so I can better understand? The handwriting is pretty cluttered. Additionally, I need to label the nucleophile and electrophile, but my main concern is whether those reactions differ, like the "Brønsted-Lowry acid-base mechanism, Lewis acid-base mechanism, acid-catalyzed mechanisms, acid-catalyzed reactions, base-catalyzed reactions, nucleophilic substitution mechanisms (SN1 and SN2), elimination reactions (E1 and E2), organometallic mechanisms, and so forth."

Chapter 14 Solutions

ORG CHEM W/ EBOOK & SW5 + STUDY GUIDE

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