Homework Answers
1) enolization with NaOH to give more stable enolate ion, followed by alkylation
2) crossed aldol condensation followed by Friedel-crafts acylation
3) crossed aldol in basic medium
40 intrmolecular aldol condensation.
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O (with no chance of overalkylation) aldol addition reactant(s) aldo condensation reactant (s) OH reagents reagents:...
Be sure to answer all parts. Can the aldol addition product of the aldehyde below undergo an aldol condensation reactio...
Be sure to answer all parts.
Can the aldol addition product of the aldehyde below undergo an
aldol condensation reaction? Why or why not?
If a reaction occurs, draw the structure of the aldol
condensation product. If not, write NR.
Be sure to answer all parts. Can the aldol addition product of the aldehyde below undergo an aldol condensation reaction? Why or why not? If a reaction occurs, draw the structure of the aldol condensation product. If not, write NR....
Draw a stepwise mechanism for the formation of the only possible aldol condensation product, using H2O...
Draw a stepwise mechanism for the formation of the only possible
aldol condensation product, using H2O as a proton source and OH- as
the base
Draw the ste puise mechanism for the Formation of the only possible aldo condensation produc+. ー2
Match the starting ketone or aldehyde with appropriate product of either aldol addition or adol condensation...
Match the starting ketone or aldehyde with appropriate product
of either aldol addition or adol condensation reaction.
A ketone or an aldehyde from the list undergo either aldol addition (in a case aldol addition product can not undergo further elimination) or aldol condensation reaction in protic solvent under basic catalysis. Match the starting ketone or aldehyde with appropriate product of either aldol addition or aldol condensation reaction propanal acetaldehyde 2-ethyl-2-hydroxy-hexanal 2-methylbuta ethanal Please answer 2-ethyl-4-methyl 2-hexenal Choose 2-methyl-2-pentenal 2-ethyl-3-hydroxy-2,4-dimethyl hexanal...
Both compounds are to go through aldol condensation and conjugate addition 12) (15 pts) Fill in...
Both compounds are to go through aldol condensation and conjugate
addition
12) (15 pts) Fill in the intermediate or starting materials for the retrosynthesis problems below: Aldol Condensation Conjugate Addition
Provide the missing compounds and reagents in the reaction scheme below. With, what? An aldol condensation...
Provide the missing compounds and reagents in the reaction
scheme below. With, what? An aldol condensation at the end? Need
help on this last part...
The sequence of a Michael addition followed by an intramolecular aldol condensation is known 5. as...
The sequence of a Michael addition followed by an intramolecular aldol condensation is known 5. as a
Draw the structures of the aldol addition and condensation products of pentanal. Draw only one final...
Draw the structures of the aldol addition and condensation products of pentanal. Draw only one final condensation product.
4. Provide the starting reagents for the aldol condensation reaction below. (1 point) NaOH NaOH.
4. Provide the starting reagents for the aldol condensation reaction below. (1 point) NaOH NaOH.
Question 5 23.5 Draw the structure of the aldol condensation product OH (a) (b) (c) (e)...
Question 5 23.5 Draw the structure of the aldol condensation product OH (a) (b) (c) (e) 23.5 Draw the structure of the aldol condensation product. NaOEt H note-you may find it helpful to number the carbons and/or redraw the molecule
Draw a mechanism (with arrow pushing) for the base-catalysed aldol addition and condensation of ethanal with...
Draw a mechanism (with arrow pushing) for the base-catalysed aldol addition and condensation of ethanal with itself, including both steps . Highlight the α hydrogen atoms in your scheme
Be sure to answer all parts.
Can the aldol addition product of the aldehyde below undergo an
aldol condensation reaction? Why or why not?
If a reaction occurs, draw the structure of the aldol
condensation product. If not, write NR.
Be sure to answer all parts. Can the aldol addition product of the aldehyde below undergo an aldol condensation reaction? Why or why not? If a reaction occurs, draw the structure of the aldol condensation product. If not, write NR....
Draw a stepwise mechanism for the formation of the only possible
aldol condensation product, using H2O as a proton source and OH- as
the base
Draw the ste puise mechanism for the Formation of the only possible aldo condensation produc+. ー2
Match the starting ketone or aldehyde with appropriate product
of either aldol addition or adol condensation reaction.
A ketone or an aldehyde from the list undergo either aldol addition (in a case aldol addition product can not undergo further elimination) or aldol condensation reaction in protic solvent under basic catalysis. Match the starting ketone or aldehyde with appropriate product of either aldol addition or aldol condensation reaction propanal acetaldehyde 2-ethyl-2-hydroxy-hexanal 2-methylbuta ethanal Please answer 2-ethyl-4-methyl 2-hexenal Choose 2-methyl-2-pentenal 2-ethyl-3-hydroxy-2,4-dimethyl hexanal...
Both compounds are to go through aldol condensation and conjugate
addition
12) (15 pts) Fill in the intermediate or starting materials for the retrosynthesis problems below: Aldol Condensation Conjugate Addition
Provide the missing compounds and reagents in the reaction
scheme below. With, what? An aldol condensation at the end? Need
help on this last part...
The sequence of a Michael addition followed by an intramolecular aldol condensation is known 5. as a
Draw the structures of the aldol addition and condensation products of pentanal. Draw only one final condensation product.
4. Provide the starting reagents for the aldol condensation reaction below. (1 point) NaOH NaOH.
Question 5 23.5 Draw the structure of the aldol condensation product OH (a) (b) (c) (e) 23.5 Draw the structure of the aldol condensation product. NaOEt H note-you may find it helpful to number the carbons and/or redraw the molecule
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