For each reaction: draw all products, label the Zaitsev and Hofmann products, if there is more than one elimination product, and circle the major product.
Hint: LDA is a strong bulky base
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For each reaction: draw all products, label the Zaitsev and
Hofmann products, if there is more...
Complete the following with the correct products, label Zaitsev and Hofmann, and explain why the reaction...
Complete the following with the correct products, label Zaitsev and Hofmann, and explain why the reaction is either regioselective or stereoselective. (6 pts.) D -Br Nahi Complete each of the following reactions by adding the starting material, reaction conditions, or all possible product(s) - label major/minor - Sx2. Sx1, E2 or E1. (33 pts.) (CH3),COK DMF C(CH3) NaOH DMSO CH OH heat Ph H+Br NaOCH, H+CHE Ph DMF SK DMF o (only product)
Provide an explanation (with drawings) why the reaction on the below yields the Hofmann product exclusively...
Provide an explanation (with drawings) why the reaction on the below yields the Hofmann product exclusively (no Zaitsev product at all) even though the base is not sterically hindered (bulky). Br NaOET in ELOH Predict the possible products of the following reactions and identify which product(s) will be the major product(s). You will need to evaluate to what extent substitution and elimination reactions occur. Pay close attention to stereochemistry when necessary. Br НО NatOEt (a) BuOK Na Ome (b) aa...
For the following dehydrohalogenation (E2) reaction, draw the Zaitsev product(s), showing the stereochemistry clearly. If there...
For the following dehydrohalogenation (E2) reaction, draw the
Zaitsev product(s), showing the stereochemistry clearly. If there
is more than one organic product, both products can be drawn in the
same box.the hint:Consider that the reaction is an elimination in the presence of
a relatively small base to give the Zaitsev product, which is the
most stable. Also consider the stereochemistry of the reactant and
that the elimination must be anti-periplanar.
Draw the major organic products of the reaction. (Hint: might there be more than one product?...
Draw the major organic products of the reaction. (Hint: might there be more than one product? Will it be only substitution, only elimination, or some of each?) Indicate the stereochemistry, including H's, at each stereocenter. Omit byproducts such as salts or methanol. If there is more than one alkene that can form, only draw one of them, the one that forms to greater extent. CH3ONa CH3OH 1111
-OH 5. For the reactions below: a. (10 pts) Predict all products and circle the major product if more than product...
-OH 5. For the reactions below: a. (10 pts) Predict all products and circle the major product if more than product can be made. Remember to indicate correct stereochemistry of your products for full credit: NaCN CH3CH,CH OH b. (3 pts) In any of your elimination products for the reactions above label whether they are Zaitsev or Hoffman
Draw the major, neutral organic product(s) for each reaction below.
Draw the major, neutral organic product(s) for
each reaction below.
Incorrect. When reacting with a strong base, tertiary alkyl halides will undergo an elimination reaction instead of a substitution reaction.
Incorrect. When reacting with a strong base, tertiary alkyl halides will undergo an elimination reaction instead of a substitution reaction.
Draw the major product of this reaction only. OTS acetone CH3 For the following reaction, which reaction will be fa...
Draw the major product of this reaction only. OTS acetone CH3 For the following reaction, which reaction will be faster (Left or Right)? Why? Click on the reaction that will be faster AND the right reason V1 + OH - or 1 + OOCCH3 Left Right Because the correct answer performs an elimination reaction while the incorrect one does a substitution reaction Because the correct answer has a stronger base than the incorrect answer. Resonance makes a stronger base. Because...
Problem 10. Draw the structure of the major product formed in each of the following reactions....
Problem 10. Draw the structure of the major product formed in each of the following reactions. Consider the resulting stereochemistry of the products formed (6p) KBr ng MeOH NaF DMSO H2(g), Pd (cat.) c) Solvent OH 1) NaH (strong base) THF (solvent) d) 2) CI Nal e) CI Acetone
Help and explain PLEASE!! - + Fit to page Page view In the reaction below, label...
Help and explain PLEASE!!
- + Fit to page Page view In the reaction below, label each product as "Zaitsev", "Hofmann", or "neither" Zaitsev/ Hofmann. Note that more than one product can have the same designation. CH, CH LOH H,SO heat Determine if each of the structures below is a possible product for the reaction. If the product is possible, determine if it is the result of a rearrangement. Which product is the Zaitsev product? Which product is the Hofmann...
5. Ester enolates (as well as enolates from ketones) are often best generated using sterically hindered...
5. Ester enolates (as well as enolates from ketones) are often best generated using sterically hindered bases such as t-butoxide, since a bulky base will be less likely to act as a nucleophile and attack the carbonyl carbon. Give the enolates generated by the following bulky bases, then show the product of enolate alkylation. (Hint – the second step is an SN2 reaction.). The first one is done as an example. Be sure to count your carbons! Br + LIEN...
Complete the following with the correct products, label Zaitsev and Hofmann, and explain why the reaction is either regioselective or stereoselective. (6 pts.) D -Br Nahi Complete each of the following reactions by adding the starting material, reaction conditions, or all possible product(s) - label major/minor - Sx2. Sx1, E2 or E1. (33 pts.) (CH3),COK DMF C(CH3) NaOH DMSO CH OH heat Ph H+Br NaOCH, H+CHE Ph DMF SK DMF o (only product)
Provide an explanation (with drawings) why the reaction on the below yields the Hofmann product exclusively (no Zaitsev product at all) even though the base is not sterically hindered (bulky). Br NaOET in ELOH Predict the possible products of the following reactions and identify which product(s) will be the major product(s). You will need to evaluate to what extent substitution and elimination reactions occur. Pay close attention to stereochemistry when necessary. Br НО NatOEt (a) BuOK Na Ome (b) aa...
For the following dehydrohalogenation (E2) reaction, draw the
Zaitsev product(s), showing the stereochemistry clearly. If there
is more than one organic product, both products can be drawn in the
same box.the hint:Consider that the reaction is an elimination in the presence of
a relatively small base to give the Zaitsev product, which is the
most stable. Also consider the stereochemistry of the reactant and
that the elimination must be anti-periplanar.
Draw the major organic products of the reaction. (Hint: might there be more than one product? Will it be only substitution, only elimination, or some of each?) Indicate the stereochemistry, including H's, at each stereocenter. Omit byproducts such as salts or methanol. If there is more than one alkene that can form, only draw one of them, the one that forms to greater extent. CH3ONa CH3OH 1111
-OH 5. For the reactions below: a. (10 pts) Predict all products and circle the major product if more than product can be made. Remember to indicate correct stereochemistry of your products for full credit: NaCN CH3CH,CH OH b. (3 pts) In any of your elimination products for the reactions above label whether they are Zaitsev or Hoffman
Draw the major, neutral organic product(s) for
each reaction below.
Incorrect. When reacting with a strong base, tertiary alkyl halides will undergo an elimination reaction instead of a substitution reaction.
Incorrect. When reacting with a strong base, tertiary alkyl halides will undergo an elimination reaction instead of a substitution reaction.
Draw the major product of this reaction only. OTS acetone CH3 For the following reaction, which reaction will be faster (Left or Right)? Why? Click on the reaction that will be faster AND the right reason V1 + OH - or 1 + OOCCH3 Left Right Because the correct answer performs an elimination reaction while the incorrect one does a substitution reaction Because the correct answer has a stronger base than the incorrect answer. Resonance makes a stronger base. Because...
Problem 10. Draw the structure of the major product formed in each of the following reactions. Consider the resulting stereochemistry of the products formed (6p) KBr ng MeOH NaF DMSO H2(g), Pd (cat.) c) Solvent OH 1) NaH (strong base) THF (solvent) d) 2) CI Nal e) CI Acetone
Help and explain PLEASE!!
- + Fit to page Page view In the reaction below, label each product as "Zaitsev", "Hofmann", or "neither" Zaitsev/ Hofmann. Note that more than one product can have the same designation. CH, CH LOH H,SO heat Determine if each of the structures below is a possible product for the reaction. If the product is possible, determine if it is the result of a rearrangement. Which product is the Zaitsev product? Which product is the Hofmann...
5. Ester enolates (as well as enolates from ketones) are often best generated using sterically hindered bases such as t-butoxide, since a bulky base will be less likely to act as a nucleophile and attack the carbonyl carbon. Give the enolates generated by the following bulky bases, then show the product of enolate alkylation. (Hint – the second step is an SN2 reaction.). The first one is done as an example. Be sure to count your carbons! Br + LIEN...
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