Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
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Question
Chapter 29, Problem 29.19P
(a)
Interpretation Introduction
Interpretation:
The structural formula for the repeating unit of polyester formed in the given reaction has to be drawn.
(b)
Interpretation Introduction
Interpretation:
The regioselectivity of the given reaction between phthalic anhydride and glycerol has to be accounted.
Concept Introduction:
Regioselective reaction:
In a substitution or addition reaction in which one of the two (or more) possible products is obtained in preference to all other products that might be formed. This type of reaction is known as Regioselective reaction.
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(a) Hard contact lenses, which first became popular in the 1960s, were made by polymerizing methyl methacrylate
[CH; =C(CH,)CO,CH3] to form poly(methyl methacrylate) (PMMA). Draw the structure of PMMA. (b) More comfortable softer
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developed.
(a) Describe the polymerization of a blend of maleic anhydride and 2-methyl-1,3-
propanediol in the presence of an acid catalyst. Draw a chemical reaction
scheme showing the intermediate and final products that are formed. Describe
the reaction conditions that you would use to maximize the yield of polymer.
(b) Draw the structure of the polymer, showing the repeat unit and end groups, that
is obtained when the mole ratio of maleic anhydride to diol is 0.95
(c) What is the number average molecular weight of the polymer of Part (b) when
the extent of reaction of maleic anhydride is (i) 90% and (ii) 100%.
(d) Describe how the structure of the polymer is altered when it is further reacted
with styrene in the presence of peroxide.
(a) Hard contact lenses, which first became popular in the 1960s, were made by polymerizing methyl methacrylate [CH2 = C(CH3)CO2CH3] to form poly(methyl methacrylate) (PMMA). Draw the structure of PMMA. (b) More comfortable softer contact lenses introduced in the 1970s were made by polymerizing hydroxyethyl methacrylate [CH2 = C(CH3)CO2CH2CH2OH] to form poly(hydroxyethyl methacrylate) (poly-HEMA). Draw the structure of poly-HEMA. Since neither polymer allows oxygen from the air to pass through to the retina, newer contact lenses that are both comfortable and oxygen-permeable have now been developed.
Chapter 29 Solutions
Organic Chemistry
Ch. 29.2 - Prob. 29.1PCh. 29.5 - Prob. 29.2PCh. 29.6 - Prob. AQCh. 29.6 - Prob. BQCh. 29.6 - Prob. CQCh. 29.6 - Prob. DQCh. 29.6 - Prob. EQCh. 29.6 - Prob. FQCh. 29.6 - Prob. 29.3PCh. 29.6 - Prob. 29.4P
Ch. 29 - Prob. 29.5PCh. 29 - Prob. 29.6PCh. 29 - Prob. 29.7PCh. 29 - Prob. 29.8PCh. 29 - Prob. 29.9PCh. 29 - Prob. 29.10PCh. 29 - Prob. 29.11PCh. 29 - Prob. 29.12PCh. 29 - Prob. 29.13PCh. 29 - Prob. 29.14PCh. 29 - Prob. 29.15PCh. 29 - Prob. 29.16PCh. 29 - Polycarbonates (Section 29.5C) are also formed by...Ch. 29 - Prob. 29.18PCh. 29 - Prob. 29.19PCh. 29 - Prob. 29.20PCh. 29 - Prob. 29.21PCh. 29 - Draw a structural formula of the polymer resulting...Ch. 29 - Prob. 29.23PCh. 29 - Prob. 29.24PCh. 29 - Prob. 29.25PCh. 29 - Select the monomer in each pair that is more...Ch. 29 - Prob. 29.27PCh. 29 - Prob. 29.28PCh. 29 - Prob. 29.29PCh. 29 - Prob. 29.30PCh. 29 - Prob. 29.31PCh. 29 - Prob. 29.32PCh. 29 - Prob. 29.33PCh. 29 - Radical polymerization of styrene gives a linear...Ch. 29 - Prob. 29.35PCh. 29 - Prob. 29.36PCh. 29 - Prob. 29.37PCh. 29 - Prob. 29.38P
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