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CHEM 241 Assignment 6
2. Provide the structure of the major products A, B, and C...
Show your steps and reaction conditions clearly. No reaction mechanisms are required. (a) Using acetone and...
Show your steps and reaction conditions clearly. No reaction mechanisms are required. (a) Using acetone and 2.2-dimethylpropanal as your only sources of carbon atoms, show how you would synthesize compound 1. Hint: Reaction of a diol and a carbonyl compound. Starting from 1-ethoxynaphthalene and 3-methylbutanoic acid as your only sources of carbon atoms, show how you would synthesize the ester 1. Hint oxidation of a ketone to ester (C) Suggest a synthesis for compound 1 using as starting materials/reactants benzaldehye....
CHEMISTRY 241 Assignment 8 1. Provide the structure of the major products A, B, and C...
CHEMISTRY 241 Assignment 8 1. Provide the structure of the major products A, B, and C and then write the reaction mechanism for the specific conversion indicated below. Name: 1) MVK, NaOH (aq) B 1) NaOMe, MeOH COgH MeOH -CO Me 2) Hy0 (work-up) a) 2) HCI H" cat.. (-HO) с C below Write reaction mechanism for the conversion of B (b) 1) PrCu 1) NaOH (aq) 1) NABH B A coMe 2) H,о° 2)- 2) H20 3) H cat,...
Enol fom Kets (om Provide the structure of the major products A, B, and C formed...
Enol fom Kets (om Provide the structure of the major products A, B, and C formed in each of the synthesis routes below. 2 OH EtzNH H cat Br в 1) г 2) H,о* CrO3, H2SO Hао C A (-H2O) С- 2 2EIOH 1)Hg(OAc)2, THF A Но C H' cat (-H2O) 2) NaBH OAc O2CCHy он dk pEt &0- 1) POCI DMF Ph,P CHCO Me A Pd/C c) Me в C Hа 2) NaHCO3 (aq) Me CHa CHICO me CH...
Chem 231, Assignment 5 page 6 of 5 Part IV - Multistep Synthesis [14 marks] A....
Chem 231, Assignment 5 page 6 of 5 Part IV - Multistep Synthesis [14 marks] A. Propose a synthesis of compound A starting from dimethyl malonate. When choosing your synthetic steps, you can use any hydrocarbon with three or fewer carbon atoms, any solvents or inorganic reagents, and any organic reagents that do not contribute carbon atoms to the carbon skeleton in the product. Clearly show the required reagents and the product of each step. You do not need to...
Question 4 (10 points) Draw mechanism for the following reactions: -OH a) HO_ Ht 1. Mel b) 2. H'/...
Question 4 (10 points) Draw mechanism for the following reactions: -OH a) HO_ Ht 1. Mel b) 2. H'/H20 Qestion 5 (6 points) Propose a synthesis for the target compound with given starting materials. You may use additional reagents you need. The proposed synthesis should be no more than S steps. Hint: Enolate Reaction, Decarboxylation Reaction. Target Compound Starting Materials
Question 4 (10 points) Draw mechanism for the following reactions: -OH a) HO_ Ht 1. Mel b) 2. H'/H20
Qestion...
Which is the major product of this reaction? Pd cat. Br + -B(OH)2 Оме K2CO3 -Br...
Which is the major product of this reaction? Pd cat. Br + -B(OH)2 Оме K2CO3 -Br O A. -Br B. OH C. Meo OH D. Br Compound 1 is an acetyl protected precursor of the phytonutrient pterostilbene (2), a natural antioxidant found in blueberries. Which reagents would you use to synthesize 1 starting with 3 and 4? Brae pana A. Mg B. Po(OAc 2, 2 PPh3,K2CO3 PhBOH12,K2CO3 1.1.2. Cul
Suggest a synthesis of 1, using as starting materials the Her o CO,Et es -CHO 4....
Suggest a synthesis of 1, using as starting materials the Her o CO,Et es -CHO 4. a) Lily aldehyde (1) is an ingredient used in perfumery. Suggest a synthesis of 1, using as starting materials, the ester 2 and 1-propanol. You may use any other applicable inorganic and/or organic reagents, but LiAIH, NaOH (aq). PCC, H2, DIBAL, and Pd/C are the most likely choices (depending on your synthetic route). No reaction mechanism(s) is required. Lily aldehyde b) Using 2-methyl-1,3-cyclopentanedione, acetaldehyde...
A co₂Et 4. A Chem 241 student was given an experiment to synthesize compoun OH acetoacetate....
A
co₂Et 4. A Chem 241 student was given an experiment to synthesize compoun OH acetoacetate. The student prepared 1 mole equivalent of methylmagnesium lo which was then slowly added to a solution of ethyl acetoacetate in ether. Every 1 went well, Indeed, even without the annlication of heat the reaction mixture Dubbie orking carefully, with supervision and advice from the lab instructor, the student worked- up the reaction and isolate - LII Caction and isolated an excellent vield of...
2.(20) The following five reactions show reactants, reagents and products. In each reaction one of the...
2.(20) The following five reactions show reactants, reagents and products. In each reaction one of the categories is missing (represented by a letter). Supply the missing reactant, reagents or product where appropriate in each reaction. In your structures, be sure to indicate stereochemistry where warranted. A= a) b) H2, 5%Pt/C CH212. Zn(Cu) in ether c) C : CH Br2 in H20 d) D : phase transf. cat OH 1) Hg(OAc)2, H20 2) NaBH4 e)
**(left structure)****(right structure)** The two structures for the assignment are above and the task is: 1....
**(left structure)****(right
structure)**
The two structures for the assignment are above and
the task is:
1. Perform a retrosynthetic analysis on the two target
molecules assigned to you. In each case the organic
starting material (what you have to work backwards toward) depends
upon the target. For the structure given above (structure on left),
the starting material is either malonic ester or acetoacetic ester
and any halide. For the structure given above (structure on right),
the starting material is any...
Show your steps and reaction conditions clearly. No reaction mechanisms are required. (a) Using acetone and 2.2-dimethylpropanal as your only sources of carbon atoms, show how you would synthesize compound 1. Hint: Reaction of a diol and a carbonyl compound. Starting from 1-ethoxynaphthalene and 3-methylbutanoic acid as your only sources of carbon atoms, show how you would synthesize the ester 1. Hint oxidation of a ketone to ester (C) Suggest a synthesis for compound 1 using as starting materials/reactants benzaldehye....
CHEMISTRY 241 Assignment 8 1. Provide the structure of the major products A, B, and C and then write the reaction mechanism for the specific conversion indicated below. Name: 1) MVK, NaOH (aq) B 1) NaOMe, MeOH COgH MeOH -CO Me 2) Hy0 (work-up) a) 2) HCI H" cat.. (-HO) с C below Write reaction mechanism for the conversion of B (b) 1) PrCu 1) NaOH (aq) 1) NABH B A coMe 2) H,о° 2)- 2) H20 3) H cat,...
Enol fom Kets (om Provide the structure of the major products A, B, and C formed in each of the synthesis routes below. 2 OH EtzNH H cat Br в 1) г 2) H,о* CrO3, H2SO Hао C A (-H2O) С- 2 2EIOH 1)Hg(OAc)2, THF A Но C H' cat (-H2O) 2) NaBH OAc O2CCHy он dk pEt &0- 1) POCI DMF Ph,P CHCO Me A Pd/C c) Me в C Hа 2) NaHCO3 (aq) Me CHa CHICO me CH...
Chem 231, Assignment 5 page 6 of 5 Part IV - Multistep Synthesis [14 marks] A. Propose a synthesis of compound A starting from dimethyl malonate. When choosing your synthetic steps, you can use any hydrocarbon with three or fewer carbon atoms, any solvents or inorganic reagents, and any organic reagents that do not contribute carbon atoms to the carbon skeleton in the product. Clearly show the required reagents and the product of each step. You do not need to...
Question 4 (10 points) Draw mechanism for the following reactions: -OH a) HO_ Ht 1. Mel b) 2. H'/H20 Qestion 5 (6 points) Propose a synthesis for the target compound with given starting materials. You may use additional reagents you need. The proposed synthesis should be no more than S steps. Hint: Enolate Reaction, Decarboxylation Reaction. Target Compound Starting Materials
Question 4 (10 points) Draw mechanism for the following reactions: -OH a) HO_ Ht 1. Mel b) 2. H'/H20
Qestion...
Which is the major product of this reaction? Pd cat. Br + -B(OH)2 Оме K2CO3 -Br O A. -Br B. OH C. Meo OH D. Br Compound 1 is an acetyl protected precursor of the phytonutrient pterostilbene (2), a natural antioxidant found in blueberries. Which reagents would you use to synthesize 1 starting with 3 and 4? Brae pana A. Mg B. Po(OAc 2, 2 PPh3,K2CO3 PhBOH12,K2CO3 1.1.2. Cul
Suggest a synthesis of 1, using as starting materials the Her o CO,Et es -CHO 4. a) Lily aldehyde (1) is an ingredient used in perfumery. Suggest a synthesis of 1, using as starting materials, the ester 2 and 1-propanol. You may use any other applicable inorganic and/or organic reagents, but LiAIH, NaOH (aq). PCC, H2, DIBAL, and Pd/C are the most likely choices (depending on your synthetic route). No reaction mechanism(s) is required. Lily aldehyde b) Using 2-methyl-1,3-cyclopentanedione, acetaldehyde...
A
co₂Et 4. A Chem 241 student was given an experiment to synthesize compoun OH acetoacetate. The student prepared 1 mole equivalent of methylmagnesium lo which was then slowly added to a solution of ethyl acetoacetate in ether. Every 1 went well, Indeed, even without the annlication of heat the reaction mixture Dubbie orking carefully, with supervision and advice from the lab instructor, the student worked- up the reaction and isolate - LII Caction and isolated an excellent vield of...
2.(20) The following five reactions show reactants, reagents and products. In each reaction one of the categories is missing (represented by a letter). Supply the missing reactant, reagents or product where appropriate in each reaction. In your structures, be sure to indicate stereochemistry where warranted. A= a) b) H2, 5%Pt/C CH212. Zn(Cu) in ether c) C : CH Br2 in H20 d) D : phase transf. cat OH 1) Hg(OAc)2, H20 2) NaBH4 e)
**(left structure)****(right
structure)**
The two structures for the assignment are above and
the task is:
1. Perform a retrosynthetic analysis on the two target
molecules assigned to you. In each case the organic
starting material (what you have to work backwards toward) depends
upon the target. For the structure given above (structure on left),
the starting material is either malonic ester or acetoacetic ester
and any halide. For the structure given above (structure on right),
the starting material is any...
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