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Question 1 --/1 ) Reaction of 2-cyclohexenone with hydrazine in the presence of potassium hydroxide furnishes...
What is the major organic product expected from the reaction of 2-cyclohexene-1-one with sodium phenylacetylate followed...
What is the major organic product expected from the reaction of 2-cyclohexene-1-one with sodium phenylacetylate followed by a mild acid workup? Select one: a. cyclohexanone b. 3-(benzylethynyl)-cyclohexanone c. 2-(phenylethynyl)-cyclohexenone d. cyclohex-2-yne-1-one e. 3-(phenylethynyl)-cyclohexanone
1.) Stilbene is synthesized through the Horner-Wadsworth-Emmons reaction, which is closely related to the Wittig Reaction....
1.) Stilbene is synthesized through the Horner-Wadsworth-Emmons reaction, which is closely related to the Wittig Reaction. Draw out the starting materials for the stilbene synthesis through the Wittig reaction. Give one aldehyde compound and one ylide compound as the starting material 2.) For the previous question, give a detailed arrow-pushing mechanism for the ylide formation. 3.) Starting from the ylide and aldehyde from question 1, draw a detailed arrow-pushing mechanism to give benzil.
1) Stilbene is synthesized through the Horner-Wadsworth-Emmons reaction, which is closely related to the Wittig Reaction....
1) Stilbene is synthesized through the Horner-Wadsworth-Emmons reaction, which is closely related to the Wittig Reaction. Draw out the starting materials for the stilbene synthesis through the Wittig reaction. Give one aldehyde compound and one ylide compound as the starting material 2) For the previous question, give a detailed arrow-pushing mechanism for the ylide formation. 3) The Wittig reaction goes through a cyclic four-membered intermediate that can lead to product, but also back to the starting material. What is the...
Synthesis of cyclohexane lab 1) Draw the mechanism of the reaction (2) Explain how cyclohexene could...
Synthesis of cyclohexane lab 1) Draw the mechanism of the reaction (2) Explain how cyclohexene could form at the beginning of this reaction. Use a mechanism to support your answer. (3) Look up the IR spectra for cyclohexanol and cyclohexanone and discuss their key differences. Draw or attach the IR spectra. (4) Did you perform a ketone test? If so, discuss your results
3) Which semicarbazone is colourless and which is yellow. Why do they differ in this property?...
3) Which semicarbazone is colourless and which is yellow. Why do
they differ in this property? In general, what gives a compound
colour? (Isn’t chemistry cool?)
Introduction Many reactions can take more than one course but the preferential formation of only one of the possible products may be attained by a judicial choice of the reaction conditions. In general, the 1 of 5 CHEM-2300 F19 Experiment 6 formation of a product is controlled by thermodynamic (differences in relative potential energies...
Answer question 2 please with a full response. 1. (8 points) Draw the ylide that is...
Answer question 2 please with a full response.
1. (8 points) Draw the ylide that is produced upon reacting each of the following compounds with triphenylphosphine (Ph3P) and then butyllithium (BuLi). If the ylide cannot be produced, explain why. a. (CH3)3CCH2Br b. (CH3)3CBr c. (CH3)2CHCH2Br d. CH3C1 2. (4 points) Most Wittig reactions you find in the literature involve a strong base during the reaction. Why is a base not used in this week's experiment? Can we use an ylide...
QUESTION 1 The reaction of butanoic acid with bromine in the presence of phosphorus tribromide followed...
QUESTION 1 The reaction of butanoic acid with bromine in the presence of phosphorus tribromide followed by addition of water yields which product? 2,3-dibromobutanoic acid 3-chlorobutanoic acid C2-bromobutanoic acid C 2-chlorobutanoic acid QUESTION 2 What is the relationship between keto and enol tautomers? Cresonance forms stereoisomers constitutional isomers different conformations of the same compound QUESTION 3 The reaction of cyclohexanone with LDA followed by allylbromide gives which product? C2-allylcyclohexanone C1-allylcyclohexanol C3-allylcyclohexanone C2-lithium diisopropylamidecyclohexanone
1. draw the structure of the product of the enamine formed between cyclohexanone and morpholine 2....
1. draw the structure of the product of the enamine formed
between cyclohexanone and morpholine
2. draw the structure of the Michael addition product
3. draw the structure of the final product
This question has multiple parts. Work all the parts to get the most points. The Stork reaction is a condensation reaction between an enamine donor and an a,B-unsaturated carbonyl acceptor. The overall reaction consists of a three-step sequence of 1. formation of an enamine from a ketone, 2....
Question 2 (1 point) Reaction conditions for the use of NaBH4 and LiAlH4 as reducing agents...
Question 2 (1 point) Reaction conditions for the use of NaBH4 and LiAlH4 as reducing agents are different. LiAlH4 is the more difficult to handle. Explain why it reacts violently with water can't be used in the open air needs special anhydrous solvent all the above Question 1 (1 point) What class of compound do you always get if you reduce an aldehyde? O 2º alcohol carboxylic acid ketone 1° alcohol
D Question 1 2 pts Formaldehyde, an aldehyde with 1 carbon atom, is reacted with propyl...
D Question 1 2 pts Formaldehyde, an aldehyde with 1 carbon atom, is reacted with propyl magnesium bromide (CH,CH,CH2MgBr). The product of this reaction is then treated with dilute acid. Provide the IUPAC name of the final major organic product resulting from these reactions. For credit, the spelling and punctuation of your IUPAC name must follow the rules. DO NOT PROVIDE INFORMATION ABOUT STEREOCHEMISTRY (i.e. NO R/S or E/Z in name). ns D Question 2 2 pts The following reaction...
3) Which semicarbazone is colourless and which is yellow. Why do
they differ in this property? In general, what gives a compound
colour? (Isn’t chemistry cool?)
Introduction Many reactions can take more than one course but the preferential formation of only one of the possible products may be attained by a judicial choice of the reaction conditions. In general, the 1 of 5 CHEM-2300 F19 Experiment 6 formation of a product is controlled by thermodynamic (differences in relative potential energies...
Answer question 2 please with a full response.
1. (8 points) Draw the ylide that is produced upon reacting each of the following compounds with triphenylphosphine (Ph3P) and then butyllithium (BuLi). If the ylide cannot be produced, explain why. a. (CH3)3CCH2Br b. (CH3)3CBr c. (CH3)2CHCH2Br d. CH3C1 2. (4 points) Most Wittig reactions you find in the literature involve a strong base during the reaction. Why is a base not used in this week's experiment? Can we use an ylide...
QUESTION 1 The reaction of butanoic acid with bromine in the presence of phosphorus tribromide followed by addition of water yields which product? 2,3-dibromobutanoic acid 3-chlorobutanoic acid C2-bromobutanoic acid C 2-chlorobutanoic acid QUESTION 2 What is the relationship between keto and enol tautomers? Cresonance forms stereoisomers constitutional isomers different conformations of the same compound QUESTION 3 The reaction of cyclohexanone with LDA followed by allylbromide gives which product? C2-allylcyclohexanone C1-allylcyclohexanol C3-allylcyclohexanone C2-lithium diisopropylamidecyclohexanone
1. draw the structure of the product of the enamine formed
between cyclohexanone and morpholine
2. draw the structure of the Michael addition product
3. draw the structure of the final product
This question has multiple parts. Work all the parts to get the most points. The Stork reaction is a condensation reaction between an enamine donor and an a,B-unsaturated carbonyl acceptor. The overall reaction consists of a three-step sequence of 1. formation of an enamine from a ketone, 2....
Question 2 (1 point) Reaction conditions for the use of NaBH4 and LiAlH4 as reducing agents are different. LiAlH4 is the more difficult to handle. Explain why it reacts violently with water can't be used in the open air needs special anhydrous solvent all the above Question 1 (1 point) What class of compound do you always get if you reduce an aldehyde? O 2º alcohol carboxylic acid ketone 1° alcohol
D Question 1 2 pts Formaldehyde, an aldehyde with 1 carbon atom, is reacted with propyl magnesium bromide (CH,CH,CH2MgBr). The product of this reaction is then treated with dilute acid. Provide the IUPAC name of the final major organic product resulting from these reactions. For credit, the spelling and punctuation of your IUPAC name must follow the rules. DO NOT PROVIDE INFORMATION ABOUT STEREOCHEMISTRY (i.e. NO R/S or E/Z in name). ns D Question 2 2 pts The following reaction...
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