The pi electrons of an alkene can act as a base. Explain why the cis-dibenzoylethylene produced...
The pi electrons of an alkene can act as a base. Explain why the cis-dibenzoylethylene produced can be isomerized back into trans-dibenzoylethylene by heating an ethanol solution of cis-dibenzoylethylene with a few drops of H2SO4.
Homework Answers
When the pi bond is protonated, there is free rotation around the remaining single sigma bond allowing the more stable trans isomer to form when deprotonation occurs reforming the pi bond between the central carbon atoms.
Add Answer to:
The pi electrons of
an alkene can act as a base. Explain why the
cis-dibenzoylethylene produced...
Can someone explain why the answer is not cis-1,2-cyclohexanediol and ethanol? Question 7 What are the...
Can someone explain why the answer is not
cis-1,2-cyclohexanediol and ethanol?
Question 7 What are the products of the reaction shown below? O CH heat O IH OA. cyclohexanone and ethanol O B. cis-1,2-cyclohexanediol and ethanol O C. trans-1,2-cyclohexanediol and ethanol O D. cyclohexanone and ethanal 0 E. cis-1,2-cyclohexanediol and ethanal
5. Explain why PH3 can act both as a Lewis base and acid (PH3 + FPH3F)...
5. Explain why PH3 can act both as a Lewis base and acid (PH3 + FPH3F) while NH3 can only act as a Lewis base only
Arsenic trichloride can act both as a Lewis acid and as a Lewis base. Explain why...
Arsenic trichloride can act both as a Lewis acid and as a Lewis base. Explain why this is so and write a balanced equation for each using BF3 and Cl− as reaction partners. 1,Write the balanced equation with AsCl3 acting as Lewis base. 2,Write the balanced equation with AsCl3 acting as Lewis acid.
Organic Worksheet How can you explain that trams-1-bromo-2-methylcyclohexane yields the non-Zaitsev elimination product 3-methylcylcohexene on treatment...
Organic Worksheet How can you explain that trams-1-bromo-2-methylcyclohexane yields the non-Zaitsev elimination product 3-methylcylcohexene on treatment with base? 1-chloro-1,2-diphenylethane can undergo E2 elimination to give either cis or trans- 1,2,diphenylethylene. Draw Newman projections of the reactive conformations leading to both possible products, and suggest a reason why the trans alkene is the major product.
Please explain why is it Cis or trans. How can we differentiate the isomers? Why one...
Please explain why is it Cis or trans. How can we differentiate
the isomers? Why one shift futhur downfield than the other?
Problem 6 (1 pt Use the IHNMR and 13C NMR spectra to determine the structure of a compound whose chemical formula is C2H2C12 and assign the peaks in each spectrum. Note: In both iHNMR and 13 spectra, ignore the TMS peak at 0 ppm. IH NMR: doublet at 5.74 ppm (1) and a doublet at 4.44 ppm (l)....
for question 19 can you explain why you picked the reagents you did? Sterist CH; HC CHH; CCH; - CC CH trans vinylic...
for question 19 can you explain why you picked the reagents you
did?
Sterist CH; HC CHH; CCH; - CC CH trans vinylic anion more stable anion able cis vinylic a less stab electron repulsion cis radical anion less stable Hical anion is more stable than the cis radical anion, because the nonbonded electrons are farther apart i The trans vinylic anion is more stable than the cis vinylic anion, because the relatively bulky alkyl group in the trans isomer...
SHORT ANSWER: 1.) Explain “Hard versus Soft” acid-base behavior. 2.) Explain, in terms of ΔS & ΔG, why imperfections occur in crystals & be able to describe at least two of the four main types...
SHORT ANSWER: 1.) Explain “Hard versus Soft” acid-base behavior. 2.) Explain, in terms of ΔS & ΔG, why imperfections occur in crystals & be able to describe at least two of the four main types of defects, with a drawing of each. 3.) Describe how electron transfer occurs in either the outer sphere or the inner sphere redox reaction mechanism (choose one OR the other). 4.) Explain how to synthesize the cis and trans isomer of a square planar complex,...
How to solve alkene and alkyne reactions - Merdanym i Act antalyzod Hrdian ca Come Lazarmistry...
How to solve alkene and alkyne reactions
- Merdanym i Act antalyzod Hrdian ca Come Lazarmistry I V WORKSHOP #9 Alkenes, Alkynes, Reactions 1. Give a reasonable mechanism for the following reaction. Clearly show intermediates and show the movement of electron pairs with curved arrows. all сна H20. (H2SO4) H₃C CH₂ нас он H3CX сна 2. The addition of HBr to 2-methylpropene can, in principle, give either 1-bromo-2- methylpropane or 2-bromo-2-methylpropane. In reality, only the latter is formed. Show mechanisms...
Which statements listed below can explain why a chemical reaction does not take place? concentration of...
Which statements listed below can explain why a chemical reaction does not take place? concentration of reactants is too low the temperature is too low not enough effective collisions are occurring some of these answers all of these answers For a chemical reaction the rate of the forward reaction is at a maximum when when the concentration of the reactants and products is the same a state of equilibrium is reached the reaction begins the concentration of products is greater...
Hi, can anyone please help me with this? i have no clue how to define if...
Hi,
can anyone please help me with this? i have no clue how to define
if a reaction is Oxidation reduction or not. Thanks a lot
OXIDATION-REDUCTION Introduction Chemists refer to reactions which involve a transfer of electrons from one reactant to another as oxidation reduction reactions of just "redox" reactions. Oxidation is defined as a loss of electron and reduction as a gain of electron by a substance during a chemical reaction. The loss of electrons by one substance...
Can someone explain why the answer is not
cis-1,2-cyclohexanediol and ethanol?
Question 7 What are the products of the reaction shown below? O CH heat O IH OA. cyclohexanone and ethanol O B. cis-1,2-cyclohexanediol and ethanol O C. trans-1,2-cyclohexanediol and ethanol O D. cyclohexanone and ethanal 0 E. cis-1,2-cyclohexanediol and ethanal
5. Explain why PH3 can act both as a Lewis base and acid (PH3 + FPH3F) while NH3 can only act as a Lewis base only
Organic Worksheet How can you explain that trams-1-bromo-2-methylcyclohexane yields the non-Zaitsev elimination product 3-methylcylcohexene on treatment with base? 1-chloro-1,2-diphenylethane can undergo E2 elimination to give either cis or trans- 1,2,diphenylethylene. Draw Newman projections of the reactive conformations leading to both possible products, and suggest a reason why the trans alkene is the major product.
Please explain why is it Cis or trans. How can we differentiate
the isomers? Why one shift futhur downfield than the other?
Problem 6 (1 pt Use the IHNMR and 13C NMR spectra to determine the structure of a compound whose chemical formula is C2H2C12 and assign the peaks in each spectrum. Note: In both iHNMR and 13 spectra, ignore the TMS peak at 0 ppm. IH NMR: doublet at 5.74 ppm (1) and a doublet at 4.44 ppm (l)....
for question 19 can you explain why you picked the reagents you
did?
Sterist CH; HC CHH; CCH; - CC CH trans vinylic anion more stable anion able cis vinylic a less stab electron repulsion cis radical anion less stable Hical anion is more stable than the cis radical anion, because the nonbonded electrons are farther apart i The trans vinylic anion is more stable than the cis vinylic anion, because the relatively bulky alkyl group in the trans isomer...
How to solve alkene and alkyne reactions
- Merdanym i Act antalyzod Hrdian ca Come Lazarmistry I V WORKSHOP #9 Alkenes, Alkynes, Reactions 1. Give a reasonable mechanism for the following reaction. Clearly show intermediates and show the movement of electron pairs with curved arrows. all сна H20. (H2SO4) H₃C CH₂ нас он H3CX сна 2. The addition of HBr to 2-methylpropene can, in principle, give either 1-bromo-2- methylpropane or 2-bromo-2-methylpropane. In reality, only the latter is formed. Show mechanisms...
Which statements listed below can explain why a chemical reaction does not take place? concentration of reactants is too low the temperature is too low not enough effective collisions are occurring some of these answers all of these answers For a chemical reaction the rate of the forward reaction is at a maximum when when the concentration of the reactants and products is the same a state of equilibrium is reached the reaction begins the concentration of products is greater...
Hi,
can anyone please help me with this? i have no clue how to define
if a reaction is Oxidation reduction or not. Thanks a lot
OXIDATION-REDUCTION Introduction Chemists refer to reactions which involve a transfer of electrons from one reactant to another as oxidation reduction reactions of just "redox" reactions. Oxidation is defined as a loss of electron and reduction as a gain of electron by a substance during a chemical reaction. The loss of electrons by one substance...
Most questions answered within 3 hours.
-
Please answer the four questions below.
1. If you were going to test a method that...
asked 8 minutes ago -
Provide two or three examples of support he uses to reinforce
his arguments?
The Alienation of...
asked 15 minutes ago -
QUESTION 1
Why do we see terms with multiple names in the database
community?
Consistency is...
asked 11 minutes ago -
In a titration experiment, 11.5 mL of 0.400 M H2SO4 neutralized
48.0 mL of NaOH. What...
asked 15 minutes ago -
A shot-putter throws the shot with a horizontal velocity of 10
m/s and a
vertical velocity...
asked 31 minutes ago -
Mildred sells industrial-sized refrigeration units. Her
prospective buyer's face looks tense, and his forehead is wrinkled....
asked 32 minutes ago -
Clark Heter is an industrial engineer at Lyons Products. He
would like to determine whether there...
asked 1 hour ago -
3. Use a text editor to create a comma-delimited file of user
IDs and passwords. Revise...
asked 1 hour ago -
Jensen and Associates has a projected balance
sheet that includes the following accounts. What is the...
asked 47 minutes ago -
implement a doubly-linked list in C. Each node in the linked list should contain a string,...
asked 1 hour ago -
What are some best practices and things to avoid when developing
a PowerPoint presentation or file
asked 1 hour ago -
Consider the ways that the government can get involved in
economic issues. What role do you...
asked 48 minutes ago