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Consider the following crossed aldol condensation. Which statement explains why a single cross condensation product is...
Determine the theoretical and percent yield for this lab Wednerdouy 13 CH 4521-8: Crossed Aldol Condensation:...
Determine the theoretical and percent yield for this lab
Wednerdouy 13 CH 4521-8: Crossed Aldol Condensation: Synthesls of trans-p-anisalacetophenone Ketones that contain an a-hydrogen (a hydrogen on the C right next door to the carbonyl group) can be tabilized via keto-enol tautomerization, or through the loss of the a-hydrogen to form an enolate anion. enolate anion Enolate ions actas nudbophiles and are considerable more reactive than tois. The enolate on i the subject of today's experiment. The formation of an...
Rheosmin is a saturated ketone obtained from an alpha,beta-unsaturated ketone (a crossed aldol condensation product) which...
Rheosmin is a saturated ketone obtained from an
alpha,beta-unsaturated ketone (a crossed aldol condensation
product) which is capable of undergoing hydrogenation to yield a
saturated ketone (Rheosmin). Using this technique, identify the
reagents needed to prepare Rheosmin via crossed aldol reaction.
Rheosmin 4-(4-hydroxyphenyl)butan-2-one
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal...
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal C 2,2-dimethylbutanal 3,3-dimethyl-2-butanone QUESTION 2 Which of the following constitutes a difference between an aldol and a Claisen condensation? basic conditions Ctetrahedral intermediate Cenolate ion formation protonation of the intermediate QUESTION 3 The product of an aldol condensation reaction is generally favored if Can unsymmetrical ketone and aldehyde are used Can unsymmetrical ester and ketone are used Cone of the carbonyl partners contains no...
Draw the different geometric isomers for dibenzalacetone (there are 3 of them). Why is the trans...
Draw the different geometric isomers for dibenzalacetone (there are
3 of them). Why is the trans isomer formed in this experiment?
The purpose of this experiment is to svnthesize dibenzalacetone (trans, trans-1. 5-diphenvl-1.4 pentadien-3-one) through the Aldol condensation of acetone with benzaldehyde. The synthesis begins bv using a strong base to generate the acetone enolate ion. Water (not shown) is formed as a byproduct. The equilibrium position of this reaction strongly favors the starting acetone, and the amount of acetone...
QUESTION 33 2 points ($18.7) What is the product of the following crossed aldol condensation? (Complete...
QUESTION 33 2 points ($18.7) What is the product of the following crossed aldol condensation? (Complete aldol reactions using two different aldehydes or ketones.) Reagents: acetyl aldehyde + p-chlorobenzaldehyde (no alpha hydrogen) + NaOH a strong base + H20 and heat.) HOA o oo QUESTION 34 2 points (518.7) Which compound, in a reaction with the ketone below, would produce the fewest side products? (Identify which aldol reactions will proceed in high yield). Reagents: starting material acetone + (1) NaOH...
Product was formed successfully based on the exp. below (about 85% yield), please interpret/discuss HNMR/IR in...
Product was formed successfully based on the exp. below (about
85% yield), please interpret/discuss HNMR/IR in as much detail as
possible and assign peaks on HNMR (which peak represents which
protons of which group, etc). Note: I already know how you
determine the formation of the product so you can skip that part of
part b).
Based on this exp:
Discuss the IR spectrum and what is the peak in IR that you can see for a specific functional group...
Which of the following pairs of compounds would give the most successful crossed aldol condensation when...
Which of the following pairs of compounds would give the most successful crossed aldol condensation when combined in the presence of a strong base? (Note: by "successful" we mean that the reaction 1) actually works, and 2) gives only a single aldol condensation product.) Pair A: and Bu Ph H н Pair B: and Ph н н Pair C: and OMe Ph and Pair D: Pair C Pair A Pair D Pair B
36. Which of the following compounds is able to undergo a self-aldol condensation? A. phenylethanal B....
36. Which of the following compounds is able to undergo a self-aldol condensation? A. phenylethanal B. formaldehyde C. benzaldehyde D. 2,2-dimethylpropanal 37. The best synthesis of 1,4-dimethyl-2-nitrobenzene is: A. Benzene 1. HNO3, H2SO4 2. 2 CH,CI, 2 AICI: 1. HNO3, H2SO4 2. CH3CI, AICI: HNO3, H2SO4 B. toluene C. p-xylene D.m-nitrotoluene CH3CI, AICI: 38. Which of these is the most reliable way to make 3-heptene? A. CH,CH,CHBECH,CH,CH,CH3 + NaOCH3, heat B. CH3CH2CH-0 + Ph3P-CHCH,CH.CH C. CH CH CHOHCH2CH2CH2CH3 + H2SO4,...
Which of the following molecules might be prepared as final product, by using an aldol condensation...
Which of the following molecules might be prepared as final product, by using an aldol condensation reaction to condense an aldehyde with itself? CH 0 H CHO CH 0 HC CH Н HC CHE CH HC CHE NI a E (hp 00
Experimental Outline In its simplest form, the aldol condensation is a self-addition involving tw...
Organic Chemistry 2
Experimental Outline In its simplest form, the aldol condensation is a self-addition involving two molecules of the same aldehyde or ketone, in the presence of a base, and results in the formation of a new carbon-carbon bond joining the carbonyl carbon of one molecule to the a-position of the second. In many cases - if the reaction conditions aren't sufficiently mild - the initially formed aldol product reacts further in an elimination reaction to give what is...
Determine the theoretical and percent yield for this lab
Wednerdouy 13 CH 4521-8: Crossed Aldol Condensation: Synthesls of trans-p-anisalacetophenone Ketones that contain an a-hydrogen (a hydrogen on the C right next door to the carbonyl group) can be tabilized via keto-enol tautomerization, or through the loss of the a-hydrogen to form an enolate anion. enolate anion Enolate ions actas nudbophiles and are considerable more reactive than tois. The enolate on i the subject of today's experiment. The formation of an...
Rheosmin is a saturated ketone obtained from an
alpha,beta-unsaturated ketone (a crossed aldol condensation
product) which is capable of undergoing hydrogenation to yield a
saturated ketone (Rheosmin). Using this technique, identify the
reagents needed to prepare Rheosmin via crossed aldol reaction.
Rheosmin 4-(4-hydroxyphenyl)butan-2-one
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal C 2,2-dimethylbutanal 3,3-dimethyl-2-butanone QUESTION 2 Which of the following constitutes a difference between an aldol and a Claisen condensation? basic conditions Ctetrahedral intermediate Cenolate ion formation protonation of the intermediate QUESTION 3 The product of an aldol condensation reaction is generally favored if Can unsymmetrical ketone and aldehyde are used Can unsymmetrical ester and ketone are used Cone of the carbonyl partners contains no...
Draw the different geometric isomers for dibenzalacetone (there are
3 of them). Why is the trans isomer formed in this experiment?
The purpose of this experiment is to svnthesize dibenzalacetone (trans, trans-1. 5-diphenvl-1.4 pentadien-3-one) through the Aldol condensation of acetone with benzaldehyde. The synthesis begins bv using a strong base to generate the acetone enolate ion. Water (not shown) is formed as a byproduct. The equilibrium position of this reaction strongly favors the starting acetone, and the amount of acetone...
QUESTION 33 2 points ($18.7) What is the product of the following crossed aldol condensation? (Complete aldol reactions using two different aldehydes or ketones.) Reagents: acetyl aldehyde + p-chlorobenzaldehyde (no alpha hydrogen) + NaOH a strong base + H20 and heat.) HOA o oo QUESTION 34 2 points (518.7) Which compound, in a reaction with the ketone below, would produce the fewest side products? (Identify which aldol reactions will proceed in high yield). Reagents: starting material acetone + (1) NaOH...
Product was formed successfully based on the exp. below (about
85% yield), please interpret/discuss HNMR/IR in as much detail as
possible and assign peaks on HNMR (which peak represents which
protons of which group, etc). Note: I already know how you
determine the formation of the product so you can skip that part of
part b).
Based on this exp:
Discuss the IR spectrum and what is the peak in IR that you can see for a specific functional group...
Which of the following pairs of compounds would give the most successful crossed aldol condensation when combined in the presence of a strong base? (Note: by "successful" we mean that the reaction 1) actually works, and 2) gives only a single aldol condensation product.) Pair A: and Bu Ph H н Pair B: and Ph н н Pair C: and OMe Ph and Pair D: Pair C Pair A Pair D Pair B
36. Which of the following compounds is able to undergo a self-aldol condensation? A. phenylethanal B. formaldehyde C. benzaldehyde D. 2,2-dimethylpropanal 37. The best synthesis of 1,4-dimethyl-2-nitrobenzene is: A. Benzene 1. HNO3, H2SO4 2. 2 CH,CI, 2 AICI: 1. HNO3, H2SO4 2. CH3CI, AICI: HNO3, H2SO4 B. toluene C. p-xylene D.m-nitrotoluene CH3CI, AICI: 38. Which of these is the most reliable way to make 3-heptene? A. CH,CH,CHBECH,CH,CH,CH3 + NaOCH3, heat B. CH3CH2CH-0 + Ph3P-CHCH,CH.CH C. CH CH CHOHCH2CH2CH2CH3 + H2SO4,...
Which of the following molecules might be prepared as final product, by using an aldol condensation reaction to condense an aldehyde with itself? CH 0 H CHO CH 0 HC CH Н HC CHE CH HC CHE NI a E (hp 00
Organic Chemistry 2
Experimental Outline In its simplest form, the aldol condensation is a self-addition involving two molecules of the same aldehyde or ketone, in the presence of a base, and results in the formation of a new carbon-carbon bond joining the carbonyl carbon of one molecule to the a-position of the second. In many cases - if the reaction conditions aren't sufficiently mild - the initially formed aldol product reacts further in an elimination reaction to give what is...
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