What is the purpose or function of methanol in the Synthesis of Aspartame Experiment? A) It...
What is the purpose or function of methanol in the Synthesis of Aspartame Experiment?
A) It is used as a meta director for the bromination step.
B) It serves as a mild acid.
C) It serves as a carbocation intermediate.
D) It is used as a solvent.
E) It serves as an initiating agent for polymerization.
Homework Answers
e) The purpose or function of methanol is to act as an intiatin
agent for polymeriation. Aspartic acid, Phenylalanine and Methanol
are the components for synthesis of aspartame. Phenylalanine is
slightly modified by reaction with methanol resulting in a compound
called L-phenylalanine methyl ester.This dds a methyl group which
is linked to the molecule by an oxygen, and the compound is
converted into methyl ester. The methanol required for the
synthesis of aspartame has the chemical structure
(CH3-OH).
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What is the purpose or function of methanol in the Synthesis of
Aspartame Experiment?
A) It...
What is the purpose of each reagent in the experiment? acetanilide sodium bromide [Choose] bleach; oxidizing...
What is the purpose of each reagent in the experiment? acetanilide sodium bromide [Choose] bleach; oxidizing agent acid catalyst alcohol; base used in the reaction solvent acid protonation source for COO-to COOH source of halogen for EAS halogenation reaction source of halogen for haloform reaction bleach; reducing agent starting material, aromatic compound sodium hypochlorite acetic acid [ Choose] ethanol [Choose) Partial Question 1 2/2.5 pts What is the purpose of each reagent in the experiment? acetanilide starting material, aromatic co...
what is the purpose of the following in the experiment of Synthesis of Methyl Salicylate 1....
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PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) 1. What is the purpose of sulfuric...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
Please answer questions completely and clearly. Will leave a LIKE when done so. Thank you. 2....
Please answer questions completely and clearly. Will leave a
LIKE when done so. Thank you.
2. Compound A undergoes electrophilic aromatic substitution. a. A reacts with E' at the ortho and meta positions. Draw the other resonance structures of the ortho and meta intermediates Et+ b. Is Compound A an ortho, para director or meta director? Give reasons c. You used salicylic acid in a nitration reaction in Lab 4c. Describe a synthesis of salicylic acid from phenol. State the...
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The purpose of this experiment is to synthesize a polymer using a Gilch polymerization of 2,5- bis(bromomethyl) - 1 -methoxy-4-(2-ethylhexyloxy) benzene, to investigate the polymer's photophysical properties, and to understand the mechanism of the polymerization reaction. Introduction Poly(p-phenylene vinylenes), or PPVS, are highly luminescent polymers that are used for a variety of commercial applications. Their general structure is shown in Figure . PPVS can be synthesized via a number of routes, including a Gilch polymerization reaction, which will be used...
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Fischer esterification lab question, Please help. Thank you in advance 1) In the synthesis of isopentyl...
Fischer esterification lab question, Please help. Thank you in
advance
1) In the synthesis of isopentyl ethanoate, whose reaction is
shown below
a) what is the purpose of the sodium bicarbonate solution in the
isolation step?
b) what is the purpose of adding molecular sieves to the
reaction?
c) what is the purpose adding sulfuric acid to the reaction?
d) why is acidic acid added in excess?
e) what is the purpose of conducting a semi-micro distillation
in the second...
Explain the purpose of the following in the above experiment: a. phosphoric acid b. fractional distillation...
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Laboratory Instructor STUDENT REPORT A. Data Sheet EXPERIMENT 28 Aspartame 1. Thin-layer chromatography Distance traveled by...
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#11 If a three-step synthesis has the following percent yield what is the overall percent yield...
#11 If a three-step synthesis has the following percent yield what is the overall percent yield of the experiment? Step 1: 25% Step 2: 100% Step 3: 25% A 25% B 100% C 75% D 6.3% #12 What is the disadvantage of doing a reaction without a solvent? A economics B ease of purification C reactants should mix to a homogeneous system D environmentally friendly E all of the above
What is the purpose of each reagent in the experiment? acetanilide sodium bromide [Choose] bleach; oxidizing agent acid catalyst alcohol; base used in the reaction solvent acid protonation source for COO-to COOH source of halogen for EAS halogenation reaction source of halogen for haloform reaction bleach; reducing agent starting material, aromatic compound sodium hypochlorite acetic acid [ Choose] ethanol [Choose) Partial Question 1 2/2.5 pts What is the purpose of each reagent in the experiment? acetanilide starting material, aromatic co...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
Please answer questions completely and clearly. Will leave a
LIKE when done so. Thank you.
2. Compound A undergoes electrophilic aromatic substitution. a. A reacts with E' at the ortho and meta positions. Draw the other resonance structures of the ortho and meta intermediates Et+ b. Is Compound A an ortho, para director or meta director? Give reasons c. You used salicylic acid in a nitration reaction in Lab 4c. Describe a synthesis of salicylic acid from phenol. State the...
The purpose of this experiment is to synthesize a polymer using a Gilch polymerization of 2,5- bis(bromomethyl) - 1 -methoxy-4-(2-ethylhexyloxy) benzene, to investigate the polymer's photophysical properties, and to understand the mechanism of the polymerization reaction. Introduction Poly(p-phenylene vinylenes), or PPVS, are highly luminescent polymers that are used for a variety of commercial applications. Their general structure is shown in Figure . PPVS can be synthesized via a number of routes, including a Gilch polymerization reaction, which will be used...
Fischer esterification lab question, Please help. Thank you in
advance
1) In the synthesis of isopentyl ethanoate, whose reaction is
shown below
a) what is the purpose of the sodium bicarbonate solution in the
isolation step?
b) what is the purpose of adding molecular sieves to the
reaction?
c) what is the purpose adding sulfuric acid to the reaction?
d) why is acidic acid added in excess?
e) what is the purpose of conducting a semi-micro distillation
in the second...
Laboratory Instructor STUDENT REPORT A. Data Sheet EXPERIMENT 28 Aspartame 1. Thin-layer chromatography Distance traveled by solvent (1) Substance Distance teweled DR value Calculations: 2. KMnO, test Observations 10 min. 15 min. Reaction? 5 min. Substance 1092 330 Exploring Chemistry 3. Cari nitrate test B. Reflective Exercises and phenylalanine columns on the 1. How many spots should be seen for each of the aspartic acid and price chromatogram? Why? 2. Referring to the chromatogram, what did you here and what...
#11 If a three-step synthesis has the following percent yield what is the overall percent yield of the experiment? Step 1: 25% Step 2: 100% Step 3: 25% A 25% B 100% C 75% D 6.3% #12 What is the disadvantage of doing a reaction without a solvent? A economics B ease of purification C reactants should mix to a homogeneous system D environmentally friendly E all of the above
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