How do you determine if an addition of bromine to trans-stilbene is stereospecific based on the...
How do you determine if an addition of bromine to trans-stilbene is stereospecific based on the melting point of the product from the reaction? How would measuring the optical rotation of the product help identify it?
Homework Answers
Add Answer to:
How do you determine if an addition of bromine to trans-stilbene
is stereospecific based on the...
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...
Please show the reaction mechanisms for the following 2 reactions. Addition of Bromine to trans-Stilbene Elimination...
Please show the reaction mechanisms for the following 2
reactions.
Addition of Bromine to
trans-Stilbene
Elimination of HBr from Stilbene Dibromide
I в Boucho Brz Br H trans-Stilbene Stilbene dibromide 011000 KOH HOCH2CH2OH CEC Stilbene dibromide Diphenylacetylene
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...
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of...
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of stilbene dibromide would be formed? 2. If the bromination of trans-stilbene proceeded by anti addition what isomer(s) of stilbene dibromide would be formed? 3. Which isomer(s) of stilbene dibromide would be formed if the reaction followed Mechanism 4? Mechanism 4: Bromination is a multi-step process. In this mechanism, the pi bond attacks the bromine molecule as in Mechanism 1. Some time after the carbocation...
Stereochemistry of bromine addition 1) To investigate the mechanism for the addition of bromine to an...
Stereochemistry of bromine addition 1) To investigate the mechanism for the addition of bromine to an alkene, we will use the melting point of our brominated products. The three possible outcomes for this lab are to obtain 1)only the syn enantiomers, 2)only the anti enantiomers, or 3)a mixture of diastereomers. Match these possible outcomes to the three possible mechanisms described in the lab manual, bromonium ion, concerted Br2 activation, and carbonation 2) In this experiment we don't crystallize the final...
Based on the melting point and specific rotation experimental data: a.draw the structure(s) of the product(s)...
Based on the melting point and specific rotation experimental
data:
a.draw the structure(s) of the product(s) of the trans-cinnamic
acid addition reaction with bromine.
b. State whether the addition of Br2followed asyn or
antiaddition or both. Give reasons.
c. Is this product chiral? If so, identify the chirality
centers.
d. Is the product of the trans-cinnamic acid addition reaction
with bromine optically active? Give reasons.
e. Is your answer to Question 2d what you expected? Give
reasons.
f. What is...
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...
here is the procedure if needed EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute...
here is the procedure if needed
EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectroscopy to identify functional groups PRELAB NOTEBOOK: In the laboratory notebook, write the overall experimental objective, chemical equation(s), reaction mechanism (consider all possible stereoisomers), draw a diagram or outline of the procedural steps, and complete the chemical safety table for all chemicals. 1. Why is...
another answer is the amount of trans cinnamoc acid was insuficient Reaction progress of bromine addition to trans-c...
another answer is the amount of trans cinnamoc acid was
insuficient
Reaction progress of bromine addition to trans-cinnamic acid can be monitored by testing samples from reaction mixture over specific periods of times with TLC plates as shown by the attached picture. How can you explain your results if you only obtained spot (b) at the end of reaction? a) b) c) a) cinnamic acid b) cinnamic acid and product c) Product the applied eluent in the TLC test was...
a. Based on the stereochemistry of the addition of bromine to trans-cinnamic acid, write the structure...
a. Based on the stereochemistry of the addition of bromine to trans-cinnamic acid, write the structure of the product(s) that will form when bromine reacts with (Z)-2-hexene.
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 show the reaction mechanisms for the following 2
reactions.
Addition of Bromine to
trans-Stilbene
Elimination of HBr from Stilbene Dibromide
I в Boucho Brz Br H trans-Stilbene Stilbene dibromide 011000 KOH HOCH2CH2OH CEC Stilbene dibromide Diphenylacetylene
alswering these questions. 1. If the bromination of trans-stilbene proceeded by syn addition what isomer(s) of stilbene dibromide would be formed? 2. If the bromination of trans-stilbene proceeded by anti addition what isomer(s) of stilbene dibromide would be formed? 3. Which isomer(s) of stilbene dibromide would be formed if the reaction followed Mechanism 4? Mechanism 4: Bromination is a multi-step process. In this mechanism, the pi bond attacks the bromine molecule as in Mechanism 1. Some time after the carbocation...
Based on the melting point and specific rotation experimental
data:
a.draw the structure(s) of the product(s) of the trans-cinnamic
acid addition reaction with bromine.
b. State whether the addition of Br2followed asyn or
antiaddition or both. Give reasons.
c. Is this product chiral? If so, identify the chirality
centers.
d. Is the product of the trans-cinnamic acid addition reaction
with bromine optically active? Give reasons.
e. Is your answer to Question 2d what you expected? Give
reasons.
f. What is...
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...
here is the procedure if needed
EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectroscopy to identify functional groups PRELAB NOTEBOOK: In the laboratory notebook, write the overall experimental objective, chemical equation(s), reaction mechanism (consider all possible stereoisomers), draw a diagram or outline of the procedural steps, and complete the chemical safety table for all chemicals. 1. Why is...
another answer is the amount of trans cinnamoc acid was
insuficient
Reaction progress of bromine addition to trans-cinnamic acid can be monitored by testing samples from reaction mixture over specific periods of times with TLC plates as shown by the attached picture. How can you explain your results if you only obtained spot (b) at the end of reaction? a) b) c) a) cinnamic acid b) cinnamic acid and product c) Product the applied eluent in the TLC test was...
a. Based on the stereochemistry of the addition of bromine to trans-cinnamic acid, write the structure of the product(s) that will form when bromine reacts with (Z)-2-hexene.
Most questions answered within 3 hours.
-
What is the molar volume that an ideal gas would occupy at
20.0°C and 1.50 atm?...
asked 4 seconds from now -
What are the four types of rulings that the FTC might enact in
response to claims...
asked 1 minute ago -
Direct Labor Variances
Bellingham Company produces a product that requires 10 standard
hours per unit at...
asked 9 minutes ago -
Affirmative action falls within the realm of what type of
justice? Explain.
asked 14 minutes ago -
Which criminal laws are most relevant for security
professionals?
asked 15 minutes ago -
Discuss one or more criticisms of the way(s) technology has
negatively affected society, families, schools, or...
asked 18 minutes ago -
What are the two most common means used to authenticate the
identity of electronic communications?
Digital...
asked 23 minutes ago -
Which characteristics are shared by surfactants and fatty
amphiphiles (such as cetyl alcohol)?
I Surface active...
asked 27 minutes ago -
A 7,000-seat theater is interested in determining whether there
is a difference in attendance between shows...
asked 32 minutes ago -
the
acceleration of a block m=1.00kg attached to a spring is given by
a=-0.302 m/s^2) cos{2.41rad/s}t....
asked 31 minutes ago -
Kevin Hall borrowed some money from his friend and promised to
repay him $1,260, $1,370, $1,530,...
asked 32 minutes ago -
1) What is the element with the electron: [Ne] 3s^2
3p^5?
2) The number of unpaired...
asked 32 minutes ago