a) The aromatic heterocycle, thiophene, reacts with bromine. Present the mechanism and the structure of the product.
b) What problem is present with the reaction between both pyrrole and furan with bromine?
c) The starting material reacts with H2SO4 affording intermediate X which undergoes asylation. Present the mechanism for the asylation. Which is the final product (I or II)? Why?
OH H SO, 0 OH OH OH OH starting material intermediate X product I product lI
Homework Answers
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a) The aromatic heterocycle, thiophene, reacts with bromine. Present the mechanism and the structure of the product. b) What problem is present with the reaction between both pyrrole and furan with b...
250 ChemActivity 29 Electrophilic Aromatic Substitution no ChemActivity 29 Part A: Electrophilic Aromatic Substitution (What products...
250 ChemActivity 29 Electrophilic Aromatic Substitution no ChemActivity 29 Part A: Electrophilic Aromatic Substitution (What products are formed when a strong electrophile is added to benzene?) Model 1: (review) Electrophilic Addition of HCI Rani o g cyclohexene carbocation intermediate Run 2 U X benzene This product carbocation intermediate DOES NOT Critical Thinking Questions 1 For Rxn I (above) draw curved arrows showing the mechanism of electrophilic addition of HCl. Include an appropriate carbocation intermediate in the box above. Figure 1:...
step after each product of the the structure 5. Consider the three reaction sequences below (a, b & e) and draw Stereochemistry in the products should be clearly indicated in your drawings wh...
step after each product of the the structure 5. Consider the three reaction sequences below (a, b & e) and draw Stereochemistry in the products should be clearly indicated in your drawings when app your entire reaction sequence before you jump into any conclusions! Always make sure that the starting material and p reaction conditions! (24 points, 2 points each) icable Hints: Look very carefully at products, so that you are not adding or losing more of these atoms than...
In this problem you have to elucidate the structure of product B. A substrate A (structure...
In this problem you have to elucidate the structure of product B. A substrate A (structure shown in scheme 1) which was subjected to two consecutive reactions as shown in scheme 1 below to give the product B of molecular formula CsH14Br2. Provide the structure for Product B based on the NMR data provided (attachment 2: Problem set 2). (The 1H NMR and 13C NMR of starting substrate A has been provided for reference purpose only) 1. MnO2, CHCI3, rt,...
The proton nmr and the infrared spectra of DCC, DMAP, DCU, the product and the nmrs...
The proton nmr and the infrared spectra of DCC, DMAP, DCU, the
product and the nmrs of the starting materials and products are
shown. These are labeled Compounds A, B and C. a.Which nmr is the
product?
b. Which is the nmr of the starting material?
c. What is the mixture of compounds shown as compound C?
tert-Butyl Ethyl Fumarate DCC, DMAP, CHCI OH Chemical Formula: C,H,O Chemical Formula: CH 0 Molecular Weight: 144.13 Molecular Weight: 74.12 Chemical Formula: CH...
Can you help me identify reagent (i), Compound 8 and Compound 12 in the reaction scheme?...
Can you help me identify reagent (i), Compound 8 and
Compound 12 in the reaction scheme?
You have laboratory data on all the compounds in the
synthesis, however the amount of data available to you varies. Some
have the entirety of the spectral data, others have as little as
the elemental analysis. Use the laboratory data to help you
discover which reaction has been performed.
The lab data for Compound 8 and 12 is as
follows:
You can use any...
Calculate the theoretical yield and percent yield for experiments 7, 8, and 9. For experiment 9,...
Calculate the theoretical yield and percent yield for
experiments 7, 8, and 9. For experiment 9, determine the
theoretical yield based on starting with 0.50g of 3-nitrobenzoic
acid. Show work
Acid I (experiment 7): Weight of methyl 3-nitrobenzoate = 1.9
g
Acid II (experiment 8): Weight of 3-nitrobenzoic acid = 1.75
g
Acid III (experiment 9): Weight of 3-nitrobenzamide = 0.30 g
Experiment 7:
-2.5 mL concentrated H2SO4
-1.75 mL concentrated HNO3 (16M)
-2.1 mL concentrated Methyl Benzoate
Experiment 8:...
Mechanism An explanation for the mechanism is given in page 376 and 377. It says the...
Mechanism An explanation for the mechanism is given in page 376 and 377. It says the reaction is not a free radical reaction, it is faster in acids and it requires HCIO and most likely Cl2 (elemental chlorine). Bleach is a basic solution of NaOCI sodium hypochlorite). It is made by the following reaction: 2 NaOH+ Cl2 <>NaoCI+NaCI + H20 Using your knowledge of equilibriums, what is the role of the acetic acid? (4 points) Hypochlorous acid is obtained from...
Please explain what is going on in this lab for STEP 3. what are some important...
Please explain what is going on in this lab for STEP 3. what
are some important factors?
Multistep Synthesis Preparation of 4,4-Diphenyl-3-buten-2-one! This experiment illustrates se multistep synthesis, in which the the next. This process is very common iment illustrates several important concepts of organic synthesis. It is a synthesis, in which the product of one reaction becomes the starting material of This process is very common in industry and research, and demands careful to vields and techniques. The experiment...
need help with the boxed bullet point. writing the chemical reaction scheme for the experiment. Synthesis of an A...
need help with the boxed bullet point. writing the chemical
reaction scheme for the experiment.
Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part I Pre-lab Assignment for Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part 1 1. From The Organic Chem Lab Survival Manual ( edition) by Zubrick • Review pages 201-204: Standard Reflux. • Review pages 127-140: Extraction • Review pages 164-189: Distillation, Simple Distillation. The Distillation Example, and The Distillation Mistake. 2. Read this...
Discuss the purpose of the reaction. Discuss the function of the reagents used and what you...
Discuss the purpose of the reaction. Discuss the function of the
reagents used and what you are monitoring in that reaction.
JVCUDDL/64/1/649?response-content-dispositioninline Introduction: It is estimated that approximately 150 million metric tons of plastics are currently circulating in our global system of oceans and waterways. This seems like a fairly generic "big! number", and it's difficult to understand the scale of the problem without converting it to something more relatable. A standard empty plastic water bottle weighs approximately 12.7 g....
250 ChemActivity 29 Electrophilic Aromatic Substitution no ChemActivity 29 Part A: Electrophilic Aromatic Substitution (What products are formed when a strong electrophile is added to benzene?) Model 1: (review) Electrophilic Addition of HCI Rani o g cyclohexene carbocation intermediate Run 2 U X benzene This product carbocation intermediate DOES NOT Critical Thinking Questions 1 For Rxn I (above) draw curved arrows showing the mechanism of electrophilic addition of HCl. Include an appropriate carbocation intermediate in the box above. Figure 1:...
step after each product of the the structure 5. Consider the three reaction sequences below (a, b & e) and draw Stereochemistry in the products should be clearly indicated in your drawings when app your entire reaction sequence before you jump into any conclusions! Always make sure that the starting material and p reaction conditions! (24 points, 2 points each) icable Hints: Look very carefully at products, so that you are not adding or losing more of these atoms than...
In this problem you have to elucidate the structure of product B. A substrate A (structure shown in scheme 1) which was subjected to two consecutive reactions as shown in scheme 1 below to give the product B of molecular formula CsH14Br2. Provide the structure for Product B based on the NMR data provided (attachment 2: Problem set 2). (The 1H NMR and 13C NMR of starting substrate A has been provided for reference purpose only) 1. MnO2, CHCI3, rt,...
The proton nmr and the infrared spectra of DCC, DMAP, DCU, the
product and the nmrs of the starting materials and products are
shown. These are labeled Compounds A, B and C. a.Which nmr is the
product?
b. Which is the nmr of the starting material?
c. What is the mixture of compounds shown as compound C?
tert-Butyl Ethyl Fumarate DCC, DMAP, CHCI OH Chemical Formula: C,H,O Chemical Formula: CH 0 Molecular Weight: 144.13 Molecular Weight: 74.12 Chemical Formula: CH...
Can you help me identify reagent (i), Compound 8 and
Compound 12 in the reaction scheme?
You have laboratory data on all the compounds in the
synthesis, however the amount of data available to you varies. Some
have the entirety of the spectral data, others have as little as
the elemental analysis. Use the laboratory data to help you
discover which reaction has been performed.
The lab data for Compound 8 and 12 is as
follows:
You can use any...
Calculate the theoretical yield and percent yield for
experiments 7, 8, and 9. For experiment 9, determine the
theoretical yield based on starting with 0.50g of 3-nitrobenzoic
acid. Show work
Acid I (experiment 7): Weight of methyl 3-nitrobenzoate = 1.9
g
Acid II (experiment 8): Weight of 3-nitrobenzoic acid = 1.75
g
Acid III (experiment 9): Weight of 3-nitrobenzamide = 0.30 g
Experiment 7:
-2.5 mL concentrated H2SO4
-1.75 mL concentrated HNO3 (16M)
-2.1 mL concentrated Methyl Benzoate
Experiment 8:...
Mechanism An explanation for the mechanism is given in page 376 and 377. It says the reaction is not a free radical reaction, it is faster in acids and it requires HCIO and most likely Cl2 (elemental chlorine). Bleach is a basic solution of NaOCI sodium hypochlorite). It is made by the following reaction: 2 NaOH+ Cl2 <>NaoCI+NaCI + H20 Using your knowledge of equilibriums, what is the role of the acetic acid? (4 points) Hypochlorous acid is obtained from...
Please explain what is going on in this lab for STEP 3. what
are some important factors?
Multistep Synthesis Preparation of 4,4-Diphenyl-3-buten-2-one! This experiment illustrates se multistep synthesis, in which the the next. This process is very common iment illustrates several important concepts of organic synthesis. It is a synthesis, in which the product of one reaction becomes the starting material of This process is very common in industry and research, and demands careful to vields and techniques. The experiment...
need help with the boxed bullet point. writing the chemical
reaction scheme for the experiment.
Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part I Pre-lab Assignment for Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part 1 1. From The Organic Chem Lab Survival Manual ( edition) by Zubrick • Review pages 201-204: Standard Reflux. • Review pages 127-140: Extraction • Review pages 164-189: Distillation, Simple Distillation. The Distillation Example, and The Distillation Mistake. 2. Read this...
Discuss the purpose of the reaction. Discuss the function of the
reagents used and what you are monitoring in that reaction.
JVCUDDL/64/1/649?response-content-dispositioninline Introduction: It is estimated that approximately 150 million metric tons of plastics are currently circulating in our global system of oceans and waterways. This seems like a fairly generic "big! number", and it's difficult to understand the scale of the problem without converting it to something more relatable. A standard empty plastic water bottle weighs approximately 12.7 g....
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