ORGANIC CHEMISTRY (LOOSELEAF)
6th Edition
ISBN: 9781260475630
Author: SMITH
Publisher: MCG
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Textbook Question
Chapter 15, Problem 59P
Answer the following questions about curcumin, a yellow pigment isolated from turmeric, a tropical perennial in the ginger family and a principal ingredient in curry powder.
a. In Chapter 11 we learned that most enols, compounds that contain a hydroxy group bonded to a
b. Explain why the enol
c. Why is curcumin colored?
d. Explain why curcumin is an antioxidant
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Drawing an Enol and a Ketone Formed by Hydration of an Alkyne
Draw the enol intermediate and the ketone product formed in the following reaction.
Acetals are formed from the reaction of two alcohols with a carbonyl under acidic
conditions. Acetal formation is faster with 1,2-ethanediol than with two methanol
molecules.
Choose the factor that explains the difference in reaction rates.
A) The reaction with 1,2-ethanediol has a
lower AH (enthalpy) of reaction.
B) The reaction with 1,2-ethanediol has a
higher AH (enthalpy) of reaction.
C) The reaction with 1,2-ethanediol has a
more favorable entropy of reaction.
Draw the product of the reaction between a ketone and an alcohol. Include all hydrogen atoms in the product.
How would you classify the product of the reaction? Note that a hemiacetal formed from a ketone is also called a hemiketal; an acetal formed from a ketone is also called a ketal.
The product is an alcohol.
The product is a ketal
The product is a ketone.
The product is a hemiketal.
Chapter 15 Solutions
ORGANIC CHEMISTRY (LOOSELEAF)
Ch. 15.2 - Prob. 1PCh. 15.2 - Problem 17.2 What orbitals are used to form the...Ch. 15.3 - Prob. 4PCh. 15.3 - Problem-17.5 What is the structure of propofol,...Ch. 15.6 - Prob. 7PCh. 15.8 - Prob. 8PCh. 15.8 - Prob. 11PCh. 15.8 - Prob. 12PCh. 15.8 - Problem 17.16 Rank the following compounds in...Ch. 15.8 - Problem 17.17 Draw the seven resonance structures...
Ch. 15 - 17.23 Name each compound and state how many lines...Ch. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - 17.27 Give the IUPAC name for each compounds.
a....Ch. 15 - 17.28 Draw a structure corresponding to each...Ch. 15 - 17.29 a. Draw the 14 constitutional isomers of...Ch. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - 17.38
How many electrons does C contain?
How...Ch. 15 - Prob. 36PCh. 15 - 17.40 Explain the observed rate of reactivity of...Ch. 15 - 17.41 Draw a stepwise mechanism for the following...Ch. 15 - Prob. 39PCh. 15 - 17.43 Draw additional resonance structures for...Ch. 15 - Prob. 41PCh. 15 - Prob. 42PCh. 15 - 17.46 Which compound in each pair is the stronger...Ch. 15 - 17.47 Treatment of indene with forms its...Ch. 15 - Prob. 45PCh. 15 - 17.49 Draw the conjugate bases of pyrrole and...Ch. 15 - 17.50 a. Explain why protonation of pyrrole occurs...Ch. 15 - Prob. 48PCh. 15 - Prob. 49PCh. 15 - 17.53 How many signals does each compound...Ch. 15 - 17.54 Which of the diethylbenzene isomers (ortho,...Ch. 15 - 17.55 Propose a structure consistent with each...Ch. 15 - 17.56 Propose a structure consistent with each...Ch. 15 - 17.57 Thymol (molecular formula ) is the major...Ch. 15 - 17.58 You have a sample of a compound of molecular...Ch. 15 - 17.59 Explain why tetrahydrofuran has a higher...Ch. 15 - 17.60 Rizatriptan (trade name Maxalt) is a...Ch. 15 - 17.61 Zolpidem (trade name Ambien) promotes the...Ch. 15 - 17.62 Answer the following questions about...Ch. 15 - 17.63 Stanozolol is an anabolic steroid that...Ch. 15 - Prob. 61P
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