ORGANIC CHEMISTRY-ACCESS
6th Edition
ISBN: 9781260475586
Author: SMITH
Publisher: MCG
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Chapter 12.3, Problem 5P
Interpretation Introduction
Interpretation: The reason as to why heats of hydrogenation cannot be used to determine the relative stability of
Concept introduction: Hydrogenation reaction is exothermic in nature due to the fact that the bonds are stronger in product than in reactant. Heat of hydrogenation can be used as measure for relative stability of
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Don't used hand raiting
It is not unexpected that the methoxyl substituent on a cyclohexane ring
prefers to adopt the equatorial conformation.
OMe
H
A G₂ = +0.6 kcal/mol
OMe
What is unexpected is that the closely related 2-methoxytetrahydropyran
prefers the axial conformation:
H
H
OMe
OMe
A Gp=-0.6 kcal/mol
Methoxy: CH3O group
Please be specific and clearly write the reason why this is observed. This effect that provides
stabilization of the axial OCH 3 group in this molecule is called the anomeric effect. [Recall in the way of
example, the staggered conformer of ethane is more stable than eclipsed owing to bonding MO
interacting with anti-bonding MO...]
206 Pb
82
Express your answers as integers. Enter your answers separated by a comma.
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ΜΕ ΑΣΦ
Np, N₁ = 82,126
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protons, neutrons
Chapter 12 Solutions
ORGANIC CHEMISTRY-ACCESS
Ch. 12.1 - Prob. 1PCh. 12.3 - Problem 12.2 What alkane is formed when each...Ch. 12.3 - Prob. 3PCh. 12.3 - Prob. 4PCh. 12.3 - Prob. 5PCh. 12.3 - Prob. 6PCh. 12.3 - Compound Molecular formula before...Ch. 12.4 - Problem 12.8 Draw the products formed when...Ch. 12.5 - Prob. 9PCh. 12.5 - Prob. 10P
Ch. 12.5 - Problem 12.11 (a) Draw the structure of a compound...Ch. 12.5 - Prob. 12PCh. 12.5 - Prob. 13PCh. 12.6 - Problem 12.14 Draw the products of each...Ch. 12.8 - Prob. 15PCh. 12.8 - Problem 12.16 Draw all stereoisomers formed when...Ch. 12.9 - Prob. 17PCh. 12.9 - Problem 12.18 Draw the products formed when both...Ch. 12.10 - Problem 12.19 Draw the products formed when each...Ch. 12.10 - Prob. 20PCh. 12.10 - Prob. 21PCh. 12.11 - Problem 12.22 Draw the products formed when each...Ch. 12.11 - Prob. 23PCh. 12.12 - Problem 12.24 Draw the organic products in each of...Ch. 12.13 - Prob. 25PCh. 12 - 12.29 Draw the products formed when A is treated...Ch. 12 - Prob. 30PCh. 12 - Prob. 31PCh. 12 - Prob. 32PCh. 12 - Prob. 33PCh. 12 - Draw the organic products formed when cyclopentene...Ch. 12 - Draw the organic products formed when allylic...Ch. 12 - Prob. 39PCh. 12 - Prob. 40PCh. 12 - Prob. 41PCh. 12 - What alkene is needed to synthesize each 1,2-diol...Ch. 12 - 12.48 Draw the products formed in each oxidative...Ch. 12 - What alkene or alkyne yields each set of products...Ch. 12 - Prob. 47PCh. 12 - Prob. 48PCh. 12 - Prob. 49PCh. 12 - Prob. 50PCh. 12 - 12.57 Draw the product of each asymmetric...Ch. 12 - 12.60 Identify A in the following reaction...Ch. 12 - Prob. 58PCh. 12 - 12.62 It is sometimes necessary to isomerize a cis...Ch. 12 - 12.63 Devise a synthesis of each compound from...Ch. 12 - Prob. 61P
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