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Bromoetherification, the addition of the elements of Br and OR to a double bond, is a...
3. Draw a stepwise, detailed mechanism for the acid-catalyzed hydration reaction in question 2 above. Use...
3. Draw a stepwise, detailed mechanism for the acid-catalyzed hydration reaction in question 2 above. Use curved arrows to indicate the flow of electrons. (Note: use hydronium ion, H307, in your mechanism to indicate "acidic water"). (6 pts) 4. Draw a stepwise, detailed mechanism for the reaction below. Use curved arrows to indicate the flow of electrons. (Hint: think of this reaction as a combination of addition of HX (step 1) and hydration (step 2)]. In the second step, an...
why is electrophilic addition reaction must happen on double bond ? Look at this example, the...
why is electrophilic addition reaction must happen on double
bond ? Look at this example, the oxygen temporary stabilize the
cyclohexane, but why it has to temporary stabilize cyclohexane
first ? It is not a benzene ring that has extra 150 KJ energy due
to conjugate dienes, And why is oxygen carbocation intermediate
cannot attacked by the nucleophilic chloride ion?
8.42 ti 2 OCH ocHs CI OCHg 1 Cl OCH Reaction with HC! yields a cation intermediate that can be...
18. A routine addition of HBr through the double bond of a vinylcyclopentane gave A small...
18. A routine addition of HBr through the double bond
of a vinylcyclopentane gave
A small amount of an unexpected product. Propose a mechanism
for
formation of this product and explain why reorganization
occurs.
.CH3 НВг Br CH3
a) There are several reagents that can be used to effect addition to a double bond,...
a) There are several reagents that can be used to effect
addition to a double bond, including: acid and water,
oxymercuration--demercuration reagents, and
hydroboration--oxidation reagents. Inspect the final product and
select all the reasons why oxymercuration--demercuration was chosen
to effect the following transformation instead of the other
reagents.
b) Complete the mechanism for the reaction by adding curved
arrows. The reagents chosen for the transformation are: 1)
Hg(OAc)2, THF, H2O and 2) NaBH4, OH
Why doesn't the Br attack the double bond? How does this reaction occur? NBS Br. Me...
Why doesn't the Br attack the
double bond? How does this reaction occur?
NBS Br. Me Me heat and peroxide Me Me 阝粼. draw both possible products
What is the formal charges on B and Br (with double bond) in the following structure
1-What is the formal charges on B and Br (with double bond) in the following structure? a) 0,0 b) +1, + 1 C) -1, +1 d) 0, +1 2- The polarity of a covalent bond is due to _______ (a) lesser electronegativity difference between two atoms (b) greater electronegativity difference between two atoms (c) lesser bond energy (d) greater bond energy 3- A CO2 molecule contains two polar bonds, but the net dipole moment is zero. It is because: (a) the molecule has symmetrical linear geometry and dipole...
a) There are several reagents that can be used to effect addition to a double bond...
a) There are several reagents that can be used to effect
addition to a double bond including: acid and water,
oxymercuration❝demercuration reagents, and hydroboration❝oxidation
reagents. Inspect the final product and select all the reasons why
acid in water was chosen to effect the following transformation
instead of the other reagents.
\\
a) There are several reagents that can be used to effect addition to a double bond including: acid and water, oxymercuration-demercuration reagents, and hydroboration-oxidation reagents. Inspect the final product...
O- CHE Br CH2 H3C Hac Electrophilic addition of HBr toalkenes yields a bromoalkane. The reaction...
Electrophilic addition of HBr to alkenes yields a bromoalkane. The reaction begins with an attack on the hydrogen of the electrophilic HBr by the electrons of the double bond to give a carbocation. This step follows Markovnikov's rule with the electrophilic H atom adding to the sp2 carbon containing the most hydrogens, leading to the formation of the most stable carbocation (1° < 2° < 3°). If possible, a 1,2-shift of either a neighboring hydride or methyl group can occur...
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...
In many addition reactions we have to think about the regiochemical preference of how the two...
In many addition reactions we have to think about the regiochemical preference of how the two new groups will add across a double bond. Draw the major product of each transformation. HBr HBr ΒΡΟ For each transformation, which set of reagents would produce each product shown below in the highest yield? - In the box below, draw a curved-arrow reaction mechanism for the following reaction. Show all bond cleavage and formation steps. Your answer should be written in the box...
3. Draw a stepwise, detailed mechanism for the acid-catalyzed hydration reaction in question 2 above. Use curved arrows to indicate the flow of electrons. (Note: use hydronium ion, H307, in your mechanism to indicate "acidic water"). (6 pts) 4. Draw a stepwise, detailed mechanism for the reaction below. Use curved arrows to indicate the flow of electrons. (Hint: think of this reaction as a combination of addition of HX (step 1) and hydration (step 2)]. In the second step, an...
why is electrophilic addition reaction must happen on double
bond ? Look at this example, the oxygen temporary stabilize the
cyclohexane, but why it has to temporary stabilize cyclohexane
first ? It is not a benzene ring that has extra 150 KJ energy due
to conjugate dienes, And why is oxygen carbocation intermediate
cannot attacked by the nucleophilic chloride ion?
8.42 ti 2 OCH ocHs CI OCHg 1 Cl OCH Reaction with HC! yields a cation intermediate that can be...
18. A routine addition of HBr through the double bond
of a vinylcyclopentane gave
A small amount of an unexpected product. Propose a mechanism
for
formation of this product and explain why reorganization
occurs.
.CH3 НВг Br CH3
a) There are several reagents that can be used to effect
addition to a double bond, including: acid and water,
oxymercuration--demercuration reagents, and
hydroboration--oxidation reagents. Inspect the final product and
select all the reasons why oxymercuration--demercuration was chosen
to effect the following transformation instead of the other
reagents.
b) Complete the mechanism for the reaction by adding curved
arrows. The reagents chosen for the transformation are: 1)
Hg(OAc)2, THF, H2O and 2) NaBH4, OH
Why doesn't the Br attack the
double bond? How does this reaction occur?
NBS Br. Me Me heat and peroxide Me Me 阝粼. draw both possible products
a) There are several reagents that can be used to effect
addition to a double bond including: acid and water,
oxymercuration❝demercuration reagents, and hydroboration❝oxidation
reagents. Inspect the final product and select all the reasons why
acid in water was chosen to effect the following transformation
instead of the other reagents.
\\
a) There are several reagents that can be used to effect addition to a double bond including: acid and water, oxymercuration-demercuration reagents, and hydroboration-oxidation reagents. Inspect the final product...
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...
In many addition reactions we have to think about the regiochemical preference of how the two new groups will add across a double bond. Draw the major product of each transformation. HBr HBr ΒΡΟ For each transformation, which set of reagents would produce each product shown below in the highest yield? - In the box below, draw a curved-arrow reaction mechanism for the following reaction. Show all bond cleavage and formation steps. Your answer should be written in the box...
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