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2) Provide the structure of the product that will result from the treatment of malonic ester...
Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), ethyl bromide, potassium tert-butoxide,...
Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), ethyl bromide, potassium tert-butoxide, isobutyl chloride, hot aqueous NaOH HCI, and heat. What is the final product? 6-Methylheptanoic acid • 2-Ethyl-3-methylpentanoic acid HE Ethylisobutylmalonic acid 4-Ethyl-2-methylpentanoic acid 2 Ethyl-4-methylpentanoic acid
Please show the entire mechanism for this problem, thank you! 46) Malonic ester (diethyl malonate) is...
Please show the entire mechanism for this problem, thank
you!
46) Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), 1- bromopentane, potassium tert-butoxide, iodomethane, hot aqueous NaOH, HCl, and heat. What is the final product? a) 2-Methylheptanoic acid b) 3-Methylhexanoic acid c) 3-Methylpentanoic acid d) 2-Methylpentanoic acid e) Ethyl 2-methylheptanoate 47) What would be the major product of the following reaction sequence? 1. BH PCC 1. LDA (-78°C) 2. H,02, OH CH,C12 2. CH3CH,Br ఎంత a)...
2. Write the structure of the principal organic product(s) of the following reactions: (112 pts) (a)...
2. Write the structure of the principal organic product(s) of the following reactions: (112 pts) (a) 2-chloropropane + lithium in diethyl ether (b) product of (a) with cyclohexanone, followed by dilute acid (c) benzoic acid + NaOH+H2O (d) hexanoic acid + Brą + PBrz (e) ethyl acetate + CH3CH2O- Nat in ethanol (f) ethyl acetoacetate + sodium ethoxide + 1-bromobutane (g) propanal + ethanol + dissolved HCl gas (h) (CH),CO K + CH I in (CH),COH solvent (i) 2,4-pentanedione +...
14. Which of the following reagents should be used to prepare tert-butyl ethyl ether a) tert-butyl...
14. Which of the following reagents should be used to prepare tert-butyl ethyl ether a) tert-butyl bromide and sodium ethoxide b) tert-butyl alcohol and ethyl bromide c) tert-butyl alcohol and ethanol d) potassium tert-butoxide and ethyl bromide 15. What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4 16. What product is formed when methyloxirane is treated with ethylmannesium bromide followed by treatment with aqueous acid? A) 1-pentanol B) 2-pentanol C)...
**(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...
HW 22: Enolates 1. Provide a detailed, stepwise mechanism for the base-catalyzed enolization (keto enol tautomerism) of acetaldehyde. 2. Provide the major organic product of the folowing reactio...
HW 22: Enolates 1. Provide a detailed, stepwise mechanism for the base-catalyzed enolization (keto enol tautomerism) of acetaldehyde. 2. Provide the major organic product of the folowing reaction. 3. Provide the major organic product of the following reaction LDA 4. Which of the following ketones will give a positive iodoform test? A) 4-heptanone D) cyclohexanone B) 3-hexanone C)2-hexanone 5. Provide the major organic product of the following reaction. 6. Provide the structure of the major organic product which results when...
Page 1 Synthesis using Carbonyl O-Substitution Chemistry Preamble This experiment involves the synthesis of target molecules...
Page 1 Synthesis using Carbonyl O-Substitution Chemistry Preamble This experiment involves the synthesis of target molecules using a-substitution chemistry. You are assigned two target molecules, one of which is best synthesized by an alkylation approach, while the other is best synthesized by an addition or condensation approach. You must do the following: 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...
Synthesis using Carbonyla-Substitution Chemistry Preamble This experiment involves the synthesis of target molecules using a-substitution chemistry....
Synthesis using Carbonyla-Substitution Chemistry Preamble This experiment involves the synthesis of target molecules using a-substitution chemistry. You are assigned two target molecules, one of which is best synthesized by an alkylation approach, while the other is best synthesized by an addition or condensation approach. My two target molecules are number 2 and number 12 in the last page. You must do the following: 1. Perform a retrosynthetic analysis on the two target molecules assigned to you. In each case the...
1.The main product of the reaction between p-cresol and Br2 / FeBr3 is: 3-Bromo-4-methyl phenol 2-Bromo-4-methyl...
1.The main product of the reaction between p-cresol and Br2 / FeBr3 is: 3-Bromo-4-methyl phenol 2-Bromo-4-methyl phenol 2-methyl-4-bromine phenol 3-methyl-4-bromine phenol 2.Which of the following compounds is the least reactive in the nucleophilic substitution with NaOH? 2,4-dinitrochlorobenzene m-nitrochlorobenzene o-nitrochlorobenzene 3,5-dinitrochlorobenzene 3.What is the mechanism (s) for the reaction of 4-bromo-1-nitrobenzene with sodium hydroxide to form 4-nitrophenol? bimolecular nucleophilic substitution (Sn2) aromatic nucleophilic substitution by addition-elimination aromatic nucleophilic substitution by elimination-addition aromatic electrophilic substitution 4.which of the following is the correct...
Synthesis of dimedone This lab exercise will give you practical experience with the generation of...
Synthesis of dimedone This lab exercise will give you practical experience with the generation of a malonic ester enolate and subsequent reaction with an a,p-unsaturated carbonyl compound. This sequence is known as the Michael reaction. In the presence of sodium methoxide, dimethyl propanedioate (malonic ester/dimethyl malonate) is converted to the corresponding enolate anion and reaction with 4-methylpent-3-en-2-one (mesityl oxide) affords the Michael adduct 1, as shown in the reaction sequence below. Under the basic reaction conditions, the Michael adduct 1...
Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), ethyl bromide, potassium tert-butoxide, isobutyl chloride, hot aqueous NaOH HCI, and heat. What is the final product? 6-Methylheptanoic acid • 2-Ethyl-3-methylpentanoic acid HE Ethylisobutylmalonic acid 4-Ethyl-2-methylpentanoic acid 2 Ethyl-4-methylpentanoic acid
Please show the entire mechanism for this problem, thank
you!
46) Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), 1- bromopentane, potassium tert-butoxide, iodomethane, hot aqueous NaOH, HCl, and heat. What is the final product? a) 2-Methylheptanoic acid b) 3-Methylhexanoic acid c) 3-Methylpentanoic acid d) 2-Methylpentanoic acid e) Ethyl 2-methylheptanoate 47) What would be the major product of the following reaction sequence? 1. BH PCC 1. LDA (-78°C) 2. H,02, OH CH,C12 2. CH3CH,Br ఎంత a)...
2. Write the structure of the principal organic product(s) of the following reactions: (112 pts) (a) 2-chloropropane + lithium in diethyl ether (b) product of (a) with cyclohexanone, followed by dilute acid (c) benzoic acid + NaOH+H2O (d) hexanoic acid + Brą + PBrz (e) ethyl acetate + CH3CH2O- Nat in ethanol (f) ethyl acetoacetate + sodium ethoxide + 1-bromobutane (g) propanal + ethanol + dissolved HCl gas (h) (CH),CO K + CH I in (CH),COH solvent (i) 2,4-pentanedione +...
14. Which of the following reagents should be used to prepare tert-butyl ethyl ether a) tert-butyl bromide and sodium ethoxide b) tert-butyl alcohol and ethyl bromide c) tert-butyl alcohol and ethanol d) potassium tert-butoxide and ethyl bromide 15. What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4 16. What product is formed when methyloxirane is treated with ethylmannesium bromide followed by treatment with aqueous acid? A) 1-pentanol B) 2-pentanol C)...
**(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...
HW 22: Enolates 1. Provide a detailed, stepwise mechanism for the base-catalyzed enolization (keto enol tautomerism) of acetaldehyde. 2. Provide the major organic product of the folowing reaction. 3. Provide the major organic product of the following reaction LDA 4. Which of the following ketones will give a positive iodoform test? A) 4-heptanone D) cyclohexanone B) 3-hexanone C)2-hexanone 5. Provide the major organic product of the following reaction. 6. Provide the structure of the major organic product which results when...
Page 1 Synthesis using Carbonyl O-Substitution Chemistry Preamble This experiment involves the synthesis of target molecules using a-substitution chemistry. You are assigned two target molecules, one of which is best synthesized by an alkylation approach, while the other is best synthesized by an addition or condensation approach. You must do the following: 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...
Synthesis using Carbonyla-Substitution Chemistry Preamble This experiment involves the synthesis of target molecules using a-substitution chemistry. You are assigned two target molecules, one of which is best synthesized by an alkylation approach, while the other is best synthesized by an addition or condensation approach. My two target molecules are number 2 and number 12 in the last page. You must do the following: 1. Perform a retrosynthetic analysis on the two target molecules assigned to you. In each case the...
Synthesis of dimedone This lab exercise will give you practical experience with the generation of a malonic ester enolate and subsequent reaction with an a,p-unsaturated carbonyl compound. This sequence is known as the Michael reaction. In the presence of sodium methoxide, dimethyl propanedioate (malonic ester/dimethyl malonate) is converted to the corresponding enolate anion and reaction with 4-methylpent-3-en-2-one (mesityl oxide) affords the Michael adduct 1, as shown in the reaction sequence below. Under the basic reaction conditions, the Michael adduct 1...
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