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![The given reaction is as follows: cyclo-adition. In The Diels-Alder reaction also known as [4+2] cyclo-addition. In this reac](http://img.homeworklib.com/questions/f8036f60-d074-11ea-bf08-97ae9deedde1.png?x-oss-process=image/resize,w_560)
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Give the product of the following reaction: Draw the HOMO of butadiene and the LUMO of...
Please help!! Questions 1. Why does the trans conformation of a diene, in reaction with a...
Please help!!
Questions 1. Why does the trans conformation of a diene, in reaction with a dienophile, not lead to a Diels-Alder reaction product? 2. Complete the following Diels-Alder reactions. Provide the major endo-product(s). Diene Dienophile Product(s) Domov - 0.0- 3. How many a electrons are there in a molecule of 1.3-butadiene? 106 4. What is the maximum number of electrons that can reside in a molecular orbital? (Hint: It is the same maximum number that can fit into an...
5. Molecular orbitals are formed by the overlap of atomic orbitals. Thus, n atomic orbitals can combine (overlap) t...
5. Molecular orbitals are formed by the overlap of atomic orbitals. Thus, n atomic orbitals can combine (overlap) to form n molecular orbitals. In 1,3-butadiene there are four atomic p orbitals which can combine to form four 7 molecular orbitals. In ethene there are two atomic p orbitals which can combine to form two y molecular orbitals. The drawings below show the different ways in which the p orbitals of ethene and 1,3- butadiene can be combined to form the...
*33) Show the HOMO molecular orbital in 1,3-pentadiene that would react with the LUMO in ethene,...
*33) Show the HOMO molecular orbital in 1,3-pentadiene that would react with the LUMO in ethene, in a Diels-Alder 4 + 2 cycloization. And give the product of the reaction.
The reaction above is an electrocyclization reaction. Please: a. Draw the HOMO and LUMO levels for...
The reaction above is an electrocyclization reaction.
Please:
a. Draw the HOMO and LUMO levels for the reaction
b. What is the stereochemistry of the product ?
c. Is the reaction conrotatory or disrotatory?
#18 Me heat Me Me' (27,42,62)-octa-2,4,6-triene Me
6. Is the thermal (3+2) cycloaddition between allyl anion and ethylene to give the cyclopentyl carbanion,...
6. Is the thermal (3+2) cycloaddition between allyl anion and ethylene to give the cyclopentyl carbanion, shown below, a thermally allowed or forbidden reaction? To answer, draw the molecular orbitals for HOMO of the ally! anion and LUMO of ethylene and clearly orient the orbitals in such a way that the orbital interactions are clear. Label the two key orbital interactions as bonding (in-phase) or antibonding (out of phase). (11 pts) G
Aromatic substitution Give the major product of the following reaction. HNO, OH HSC HC Give the...
Aromatic substitution
Give the major product of the following reaction. HNO, OH HSC HC Give the major product of the following reaction: HASA Electrophilic aromatic substitution usually occurs at the 1-position of naphthalene. Give the major product of the following reaction. Give the major product of the following reaction. Draw the starting material if no reaction occurs. Give the major product of the following reaction. Draw the starting material if no reaction occurs. NO 2 Give the major product of...
Draw the product of the following: a)Draw the major product of the following reaction (after aque...
Draw the product of the following:a)Draw the major product of the following reaction (after
aqueous workup). Use wavy bonds to indicate mixtures of
diastereomers.b) Give the major product of the following reaction (after
aqueous workup). If no reaction occurs, draw the starting
material.c)Give the major product of the following reaction (after
aqueous workup). If no reaction occurs, draw the starting
material.d) Draw the major product of the following reaction (after
aqueous workup). Use wavy bonds to indicate mixtures of
diastereomers.
I need some help in here please! a) Give the major product of the following reaction (after...
I need some help in here please!
a) Give the major product of the following reaction
(after aqueous workup). If no reaction occurs, draw the starting
material. There are two products of this reaction. Draw the one
that contains the saturated (nonaromatic) six-membered ring.
b) Give the major product of the following reaction (after
aqueous workup). If no reaction occurs, draw the starting material.
There are two products of this reaction. Draw the one that contains
the five-membered ring.
Ph3P-CH2 Ph3P-СНСНЗ
Using a symmetry-based approach, construct a complete molecular orbital diagram for OH2. (a) Indicate the HOMO...
Using a symmetry-based approach, construct a complete molecular orbital diagram for OH2. (a) Indicate the HOMO and LUMO. (b) Draw a representation of the HOMO and LUMO. (c) If one were to react this cation with another proton to give the dicationic species [H3O] + explain what would happen to the energies of the orbitals in the OH2 diagram after this reaction. Be specific about the key features regarding the M.O. diagram in the new cation. You do NOT need...
1a. Draw the two chair conformations for 1b. Draw the dominant frontier orbital interaction for the bromide in the...
1a. Draw the two chair conformations for 1b. Draw the dominant frontier orbital interaction for the bromide in the reaction below. Which the SN2 reaction of NaCN with CH,Br. (Hint: the one do you think is more reactive? Why? HOMO of cyanide interacting with the LUMO of CH,Br). Clearly show the optimum alignment and NaCN + NaBr in-phase overlap of these orbitals. DMF 1e. Draw the enol intermediate in the 1d. Draw a specific example (reactants and products) hydration reaction...
Please help!!
Questions 1. Why does the trans conformation of a diene, in reaction with a dienophile, not lead to a Diels-Alder reaction product? 2. Complete the following Diels-Alder reactions. Provide the major endo-product(s). Diene Dienophile Product(s) Domov - 0.0- 3. How many a electrons are there in a molecule of 1.3-butadiene? 106 4. What is the maximum number of electrons that can reside in a molecular orbital? (Hint: It is the same maximum number that can fit into an...
5. Molecular orbitals are formed by the overlap of atomic orbitals. Thus, n atomic orbitals can combine (overlap) to form n molecular orbitals. In 1,3-butadiene there are four atomic p orbitals which can combine to form four 7 molecular orbitals. In ethene there are two atomic p orbitals which can combine to form two y molecular orbitals. The drawings below show the different ways in which the p orbitals of ethene and 1,3- butadiene can be combined to form the...
*33) Show the HOMO molecular orbital in 1,3-pentadiene that would react with the LUMO in ethene, in a Diels-Alder 4 + 2 cycloization. And give the product of the reaction.
The reaction above is an electrocyclization reaction.
Please:
a. Draw the HOMO and LUMO levels for the reaction
b. What is the stereochemistry of the product ?
c. Is the reaction conrotatory or disrotatory?
#18 Me heat Me Me' (27,42,62)-octa-2,4,6-triene Me
6. Is the thermal (3+2) cycloaddition between allyl anion and ethylene to give the cyclopentyl carbanion, shown below, a thermally allowed or forbidden reaction? To answer, draw the molecular orbitals for HOMO of the ally! anion and LUMO of ethylene and clearly orient the orbitals in such a way that the orbital interactions are clear. Label the two key orbital interactions as bonding (in-phase) or antibonding (out of phase). (11 pts) G
Aromatic substitution
Give the major product of the following reaction. HNO, OH HSC HC Give the major product of the following reaction: HASA Electrophilic aromatic substitution usually occurs at the 1-position of naphthalene. Give the major product of the following reaction. Give the major product of the following reaction. Draw the starting material if no reaction occurs. Give the major product of the following reaction. Draw the starting material if no reaction occurs. NO 2 Give the major product of...
Draw the product of the following:a)Draw the major product of the following reaction (after
aqueous workup). Use wavy bonds to indicate mixtures of
diastereomers.b) Give the major product of the following reaction (after
aqueous workup). If no reaction occurs, draw the starting
material.c)Give the major product of the following reaction (after
aqueous workup). If no reaction occurs, draw the starting
material.d) Draw the major product of the following reaction (after
aqueous workup). Use wavy bonds to indicate mixtures of
diastereomers.
I need some help in here please!
a) Give the major product of the following reaction
(after aqueous workup). If no reaction occurs, draw the starting
material. There are two products of this reaction. Draw the one
that contains the saturated (nonaromatic) six-membered ring.
b) Give the major product of the following reaction (after
aqueous workup). If no reaction occurs, draw the starting material.
There are two products of this reaction. Draw the one that contains
the five-membered ring.
Ph3P-CH2 Ph3P-СНСНЗ
1a. Draw the two chair conformations for 1b. Draw the dominant frontier orbital interaction for the bromide in the reaction below. Which the SN2 reaction of NaCN with CH,Br. (Hint: the one do you think is more reactive? Why? HOMO of cyanide interacting with the LUMO of CH,Br). Clearly show the optimum alignment and NaCN + NaBr in-phase overlap of these orbitals. DMF 1e. Draw the enol intermediate in the 1d. Draw a specific example (reactants and products) hydration reaction...
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