Package: Loose Leaf for Organic Chemistry with Biological Topics with Connect Access Card
5th Edition
ISBN: 9781260170405
Author: SMITH
Publisher: MCG
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Chapter 30, Problem 30.57P
Researchers at Rutgers University have developed biocompatible
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Researchers at Rutgers University have developed biocompatible polymers that degrade into nonsteroidal anti-inflammatory drugs. For example, the reaction of two equivalents of benzyl salicylate and one equivalent of sebacoyl chloride forms a poly(anhydride ester) called PolyAspirin, which hydrolyzes to salicylic acid (an anti-inflammatory agent) and sebacic acid, which is excreted. This technology can perhaps be used for localized drug delivery at specific sites of injury. What is the structure of PolyAspirin?
Researchers at Rutgers University have developed biocompatible polymers that degrade into nonsteroidal antiinammatory drugs. For example, the reaction of two equivalents of benzyl salicylate and one equivalent of sebacoyl chloride forms a poly(anhydride ester) called PolyAspirin, which hydrolyzes to salicylic acid (an anti-inammatory agent) and sebacic acid, which is excreted. This technology can perhaps be used for localized drug delivery at specic sites of injury. What is the structure of PolyAspirin?
In reference to cloth or fiber, the term acetate usually means cellulose acetate, a semisynthetic polymer made by treating cellulose with acetic anhydride. Cellulose acetate is spun into yarn by dissolving it in acetone or methylene chloride and forcing the solution through spinnerets into warm air, where the solvent evaporates. An organic chemistry student wore a long-sleeved acetate blouse to the laboratory. She was rinsing a warm separatory funnel with acetone when the pressure rose and blew out the stopper. Her right arm was drenched with acetone, but she was unconcerned because acetone is not very toxic. About ten minutes later, the right arm of the student’s blouse disintegrated into a pile of white fluff, leaving her with a ragged short sleeve and the tatters of a cuff remaining around her wrist. Explain how a substance as innocuous as acetone ruined the student’s blouse.
Chapter 30 Solutions
Package: Loose Leaf for Organic Chemistry with Biological Topics with Connect Access Card
Ch. 30 - Prob. 30.1PCh. 30 - Prob. 30.2PCh. 30 - Prob. 30.3PCh. 30 - Draw the mechanism for the radical polymerization...Ch. 30 - Prob. 30.5PCh. 30 - Prob. 30.6PCh. 30 - Prob. 30.7PCh. 30 - Prob. 30.8PCh. 30 - Prob. 30.9PCh. 30 - Prob. 30.10P
Ch. 30 - Prob. 30.11PCh. 30 - Problem 30.12
What polymer is formed by anionic...Ch. 30 - Prob. 30.13PCh. 30 - Prob. 30.14PCh. 30 - Problem 30.15
What polyamide is formed from each...Ch. 30 - Prob. 30.16PCh. 30 - Prob. 30.17PCh. 30 - Prob. 30.18PCh. 30 - Prob. 30.19PCh. 30 - Prob. 30.20PCh. 30 - Prob. 30.21PCh. 30 - Prob. 30.22PCh. 30 - Prob. 30.23PCh. 30 - Prob. 30.24PCh. 30 - Prob. 30.25PCh. 30 - 30.26 Draw the structure of the polymer formed by...Ch. 30 - Prob. 30.27PCh. 30 - Prob. 30.28PCh. 30 - Prob. 30.29PCh. 30 - 30.30 Draw each polymer in Problem 30.29 using the...Ch. 30 - Prob. 30.31PCh. 30 - Prob. 30.32PCh. 30 - Prob. 30.33PCh. 30 - Prob. 30.34PCh. 30 - Prob. 30.35PCh. 30 - Prob. 30.36PCh. 30 - Prob. 30.37PCh. 30 - Prob. 30.38PCh. 30 - 30.39 Draw a stepwise mechanism for the...Ch. 30 - 30.40 Cationic polymerization of 3-phenylpropene ...Ch. 30 - Prob. 30.41PCh. 30 - Prob. 30.42PCh. 30 - 30.43 Although styrene undergoes both cationic and...Ch. 30 - 30.44 Rank the following compounds in order of...Ch. 30 - Prob. 30.45PCh. 30 - Prob. 30.46PCh. 30 - 30.47 Draw a stepwise mechanism for the following...Ch. 30 - 30.48 Draw a stepwise mechanism for the reaction...Ch. 30 - 30.49 Draw the products of each reaction.
a. e....Ch. 30 - Prob. 30.50PCh. 30 - Prob. 30.51PCh. 30 - 30.52 (a) Explain why poly (vinyl alcohol) cannot...Ch. 30 - 30.53 Devise a synthesis of terephthalic acid and...Ch. 30 - Prob. 30.54PCh. 30 - Prob. 30.55PCh. 30 - 30.56 Compound A is a novel poly (ester amide)...Ch. 30 - 30.57 Researchers at Rutgers University have...Ch. 30 - 30.58 Melmac, a thermosetting polymer formed from...Ch. 30 - 30.59 Although chain branching in radical...Ch. 30 - Prob. 30.60P
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- A researcher wishes to obtain a glycoside (an organic compound) from an aqueous plant extract using the solvent extraction technique. She therefore performs the following steps: Step 1: An aqueous solution (100 mL) containing 7 g of the glycoside was shaken with 50 mL of ethyl acetate. Step 2: The resulting aqueous layer from Step 1 was further shaken with 50 mL of dichloromethane. Given that: KD for the glycoside in ethyl acetate-water = 0.8 KD for the glycoside in dichloromethane-water = 0.9 (i)Calculate the total mass of glycoside extracted. (ii)If the molar mass of the glycoside = 784.3 g/mol, calculate the molar concentration of the glycoside remaining in the aqueous layer after each extraction.arrow_forwardAn organic compound is analysed and found to contain 66.7% carbon, 11.2% hydrogen and 22.1% oxygen by mass. The compound boils at 79.6 C. At 100 C and 0.970atm, the vapour has a density of 2.28g/L. The compound has a carbonyl group and cannot be oxidized to a carboxylic acid. Suggest a structure for the compound.arrow_forwardCompound A is a novel poly(ester amide) copolymer that can be used as a bioabsorbable coating for the controlled release of drugs. A is a copolymer of four monomers, two of which are amino acids or amino acid derivatives. The body’s enzymes recognize the naturally occurring amino acids in the polymer backbone, allowing for controlled enzymatic breakdown of the polymer and steady release of an encapsulated drug. Identify the four monomers used to synthesize A; then use Figure 29.2 to name the two amino acids.Figure 29.2: The 20 naturally occurring amino acidsarrow_forward
- Give the functions of the following ingredients, then name a branded/commercial skin or hair care product where the said material is used. Tetrasodium EDTA Cholesterol Silicone Oil 200/50 cst BETAINE Carbopol Ultrez D & C Red No. 17 ( CI No. 26100) Bisabolol (Alpha Bisabolol) Ceresin Wax Disodium Lauryl Sulfosuccinate Hydroxypropyl Methylcellulosearrow_forwardIn reference to cloth or fiber, the term acetate usually means cellulose acetate, a semisynthetic polymer made by treating cellulose with acetic anhydride. Cellulose acetate is spun into yarn by dissolving it in acetone or methylene chloride and forcing the solution through spinnerets into warm air, where the solvent evaporates. Predict what usually happens when students wear polyvinyl chloride shoes to the organic laboratory.arrow_forwardOne common type of cation exchange resin is prepared by polymerization of a mixture containing styrene and 1,4-divinylbenzene . The polymer is then treated with concentrated sulfuric acid to sulfonate a majority of the aromatic rings in the polymer. Q.) Explain how this sulfonated polymer can act as a cation exchange resinarrow_forward
- Poly(vinyl alcohol), a hydrophilic polymer used in aqueous adhesives, is made by polymerizing vinyl acetate and then hydrolyzing the ester linkages. Give the structures of poly(vinyl acetate) and poly(vinyl alcohol)arrow_forwardAfter graduating from your PhD, you are now working as a post-doctoral researcher in BASF , the world’s largest multinational chemical company. The management of your R&D department decided to look at the potentiality of chloroform-methanol mixture in removing the lipids of various biological systems. Your boss, a senior scientist at your department, thinking about the hydroxyl group on the alcohol and thet hree chlorines on the CHCl3 , suggested that the mixture is probably non-ideal. Being one of her brightest colleagues, she then tasked you to graph the partial molar enthalpies of the chloroform methanol mixture as a function of mole fraction. Ardently, you accepted the challenge and went back to your office. After several hours of searching, you finally come up with enthalpy of mixing data at 50oC fort his mixture (See the picture). Please provide the graphs that the boss has asked you for. Put both curves on the same graph. Note: provide your excel file for thisarrow_forwardIn reference to cloth or fiber, the term acetate usually means cellulose acetate, a semisynthetic polymer made by treating cellulose with acetic anhydride. Cellulose acetate is spun into yarn by dissolving it in acetone or methylene chloride and forcing the solution through spinnerets into warm air, where the solvent evaporates. Draw the structure of cellulose acetatearrow_forward
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