Homework Answers
please
give thumb up
Add Answer to:
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of...
Look up and draw the mechanism for the addition of Br2 to double bonds. Reference the...
Look up and draw the mechanism for the addition of Br2 to
double bonds. Reference the source from which you acquired the
mechanism.
Give the IUPAC name of the major product in the above-mentioned
reaction.
Draw the major product of obtained in the addition of Br2 to
stilbene.
Is this isomer chiral? What would be the optical rotation if
this sample was placed in a polarimeter?
Would a student obtain the same product if you started with
cis-stilbene instead of...
1. What is the expected product melting point if the bromination of stilbene by PHPB is...
1. What is the expected product melting point if the bromination of stilbene by PHPB is completely stereospecific (anti addition)? 2. How would the melting point be affected if the reaction is not completely stereospecific and the dibromide product contains significant amounts of dl-stilbene dibromide, as well as the expected meso stilbene dibromide? Note the widely differing melting points of the meso and dl isomers. 3. What is the theoretical yield of dibromide product in the bromination reaction? 4. How...
please help with number 6! 1.(2) What is the meaning of “E” in E-stilbene? 2.(4) What...
please help with number 6!
1.(2) What is the meaning of “E” in E-stilbene? 2.(4) What functional groups are present in E-stilbene? 3.(2) Write the reaction that occurs between E-stilbene and bromine. 4.(4) Write the mechanism for the addition of bromine to €- stilbene to give meso-stilbene dibromide via the intermediate cyclic bromonium ion. 5.(2) Which reagent, E-sitlbene or bromine, acts as the nucleophile in this reaction? Which reagent is the electrophile? 6.(4) Calculate the theoretical yield of meso-stilbene dibromide...
1. Most of the class will be brominating trans-stilbene (part B) and the rest cis-stilbene (part...
1. Most of the class will be brominating trans-stilbene (part B) and the rest cis-stilbene (part A). For this assignment write a detailed procedure in your lab notebook for Part B. Upload a picture/scanned copy (5 pts). Tip: If you write the procedure down the left half of the page, you can leave space to record your measurements/observations down the right side of the page. If you end up using cis-stilbene in the experimental there will only be a few...
3. The previous mechanism was for the bromination of trans-stilbene. The next several questions Uy will...
3. The previous mechanism was for the bromination of trans-stilbene. The next several questions Uy will refer to the same mechanism, but using cis-stilbene. i t a. Draw cis-stilbene. (3 pts) deb baho o o dston 50302- adi ola) obblehemsiz n 20 Bobong odib-1-modb- 023 YOYO MOY on yd behou om bb b. Draw the bromonium ion intermediate that would be obtained in the bromination of ubo cis-stilbene. (5 pts) 2012 mainsbemastr o na 5 18-18: 19 19. HP C....
Discussion Questions: 1. a) Carefully draw a three-dimensional structure of each stereoisomer of stilbene dibromide. Do...
Discussion Questions: 1. a) Carefully draw a three-dimensional structure of each stereoisomer of stilbene dibromide. Do not include any identical structures. b) Identify the enantiomeric pair, and identify one pair of structures that are diastereomers. 2. Give careful stereo-drawings representing the complete mechanism for the reaction of cis-stilbene with bromine. Remember to show the two different modes of anti-attack that are possible, depending on whether you add the bromine from above to the left-hand or the right-hand carbon of the...
Is the stereochemistry of the ionic addition of bromine to trans-cinnamic acid syn or anti addition? Why? I recorded a b...
Is the stereochemistry of the ionic addition of
bromine to trans-cinnamic acid syn or anti addition? Why? I
recorded a bp of 195 C.
3-phenylpropanoic acid, a dibromide with two le; these are shown here as their Fischer projections: i C. Hg C. Hg CHE CaHs HBr BrH H Br Br- H Br- H H -Br - HBr BrH COZH COH CO2H CO2H 2S,3S 2R,3R 28,35 2S,3R Enantiomeric Pair (threo diastereomers) mp 93.5-95.0°C Enantiomeric Pair (erytho diastereomers) mp 202-204 °C...
Postlab Questions Answer the following questions on a separate sheet or in your lab notebook. Make...
Postlab Questions Answer the following questions on a separate sheet or in your lab notebook. Make sure that the copy page is readable! D) Calculate the percentage yield for both reactions. Show all calculations. 2) What is the color of the reaction at the beginning of reaction? What causes the color? 3) Why do you dissolve maleic acid in diethyl ether and fumaric acid in water? 4) Give the complete reaction mechanisms for the formation of meso and racemic 2,3-...
Look up and draw the mechanism for the addition of Br2 to
double bonds. Reference the source from which you acquired the
mechanism.
Give the IUPAC name of the major product in the above-mentioned
reaction.
Draw the major product of obtained in the addition of Br2 to
stilbene.
Is this isomer chiral? What would be the optical rotation if
this sample was placed in a polarimeter?
Would a student obtain the same product if you started with
cis-stilbene instead of...
please help with number 6!
1.(2) What is the meaning of “E” in E-stilbene? 2.(4) What functional groups are present in E-stilbene? 3.(2) Write the reaction that occurs between E-stilbene and bromine. 4.(4) Write the mechanism for the addition of bromine to €- stilbene to give meso-stilbene dibromide via the intermediate cyclic bromonium ion. 5.(2) Which reagent, E-sitlbene or bromine, acts as the nucleophile in this reaction? Which reagent is the electrophile? 6.(4) Calculate the theoretical yield of meso-stilbene dibromide...
1. Most of the class will be brominating trans-stilbene (part B) and the rest cis-stilbene (part A). For this assignment write a detailed procedure in your lab notebook for Part B. Upload a picture/scanned copy (5 pts). Tip: If you write the procedure down the left half of the page, you can leave space to record your measurements/observations down the right side of the page. If you end up using cis-stilbene in the experimental there will only be a few...
3. The previous mechanism was for the bromination of trans-stilbene. The next several questions Uy will refer to the same mechanism, but using cis-stilbene. i t a. Draw cis-stilbene. (3 pts) deb baho o o dston 50302- adi ola) obblehemsiz n 20 Bobong odib-1-modb- 023 YOYO MOY on yd behou om bb b. Draw the bromonium ion intermediate that would be obtained in the bromination of ubo cis-stilbene. (5 pts) 2012 mainsbemastr o na 5 18-18: 19 19. HP C....
Discussion Questions: 1. a) Carefully draw a three-dimensional structure of each stereoisomer of stilbene dibromide. Do not include any identical structures. b) Identify the enantiomeric pair, and identify one pair of structures that are diastereomers. 2. Give careful stereo-drawings representing the complete mechanism for the reaction of cis-stilbene with bromine. Remember to show the two different modes of anti-attack that are possible, depending on whether you add the bromine from above to the left-hand or the right-hand carbon of the...
Is the stereochemistry of the ionic addition of
bromine to trans-cinnamic acid syn or anti addition? Why? I
recorded a bp of 195 C.
3-phenylpropanoic acid, a dibromide with two le; these are shown here as their Fischer projections: i C. Hg C. Hg CHE CaHs HBr BrH H Br Br- H Br- H H -Br - HBr BrH COZH COH CO2H CO2H 2S,3S 2R,3R 28,35 2S,3R Enantiomeric Pair (threo diastereomers) mp 93.5-95.0°C Enantiomeric Pair (erytho diastereomers) mp 202-204 °C...
Postlab Questions Answer the following questions on a separate sheet or in your lab notebook. Make sure that the copy page is readable! D) Calculate the percentage yield for both reactions. Show all calculations. 2) What is the color of the reaction at the beginning of reaction? What causes the color? 3) Why do you dissolve maleic acid in diethyl ether and fumaric acid in water? 4) Give the complete reaction mechanisms for the formation of meso and racemic 2,3-...
Most questions answered within 3 hours.
-
1) The demand for the Tesla electric automobile is P = 200,000 –
2.1 Q, where...
asked 1 minute from now -
The pH of a 50.0 mL sample of a buffer changed by one unit when
6.12...
asked 23 minutes ago -
Determine the amount of sales (units) that would be necessary
under
Break-Even Sales Under Present and...
asked 7 minutes ago -
1. Why do you think that the first thing you learn about in a
Biology course...
asked 7 minutes ago -
A pendulum has a length of 64.5m. How many times does it move
back and forth...
asked 19 minutes ago -
A constant electric field accelerates a proton from rest through
a distance of 1.65 m to...
asked 23 minutes ago -
1. Suppose you are working in an airline company. Customers
check baggage with various sizes and...
asked 30 minutes ago -
How
do you convert a pH value into a value for [H3O+]? and how you do...
asked 28 minutes ago -
21
The maximum amount of lead hydroxide that will dissolve in a
0.108 M lead nitrate...
asked 44 minutes ago -
Imagine that you are describing the use of the internet/World
Wide Web/email/social media to a business...
asked 47 minutes ago -
Suppose that stars were born at random times over the last 1010
years. The rate of...
asked 47 minutes ago -
The approved‐supplier list represents a major security
precaution that is popular among large hospitality companies.
Explain...
asked 50 minutes ago