organic chemistry
Two students are given the starting material benzoic acid and are asked to prepare benzaldehyde. The first student starts by refluxing her sample of benzoic acidin thionyl chloride in the fume hood. Upon completion of the reaction, she evaporates the thionyl chloride to isolate compound A. She treats compound A with astoichiometric amount of lithium tri-tert-butoxyaluminum hydride at –78 °C in diethyl ether, producing compound B. Adding water, she isolates her product, compoundC. The second student takes a different route. She treats benzoic acid with an excess of lithium aluminum hydride (LAH) in diethyl ether, followed by carefuladdition of ethyl acetate to remove any unreacted LAH. She adds water and isolates her product, compound D. Draw the structure for compound A, compound C, andcompound D below.
Homework Answers
hi, please help me with number 7. thank you EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE...
hi, please help me with number 7. thank you
EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE HOCH, DISCUSSION The reduction of an aldehyde or ketone with sodium borohydride is straight forward and usually affords a high yield of the alcohol. The usual procedure (and the one employed in this experiment) involves dissolving the borohydride in 95% ethanol and adding the carbonyl compound to this solution. To ensure complete reaction, an excess of sodium borohydride is used. The reaction between sodium...
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 +...
Organic chemistry post-lab question: "Why is important to add the alkyl halide dropwise in your reaction?...
Organic chemistry post-lab question: "Why is important
to add the alkyl halide dropwise in your reaction? (Hint: your
reaction is not heated, but you still need a water-cooled
condenser!)" Please answer in detail!
Here is a copy of the experiment, thank you!
The Grignard reaction is an important synthetic process by which a carbon-carbon bond is formed. Magnesium metal is first reacted with an organic halide. The resultant organo-magnesium halide (Grignard reagent) is then combined with a carbonyl compound, ultimately...
reaction mixture for 30 min, stirring the mixture rapidly during the process. The start of the...
reaction mixture for 30 min, stirring the mixture rapidly during the process. The start of the reaction is indicated by a slight turbidity of the solution. The mixture may become more turbid as the reaction proceeds and eventually may turn a pale yellow. Allow the reaction mixture to cool to room temperature after the reflux period. Reaction of the Grignard reagent with CO2 :O MgX 1) CO2 (s) 2) HCI OH MgX) magnesium carboxylate complex Grignard reagent substituted benzoic acid...
1. Write the structural formula of each of the following co (1) m-chlorobenzoyl chloride; (b) p-ethylbenzamide:...
1. Write the structural formula of each of the following co (1) m-chlorobenzoyl chloride; (b) p-ethylbenzamide: (©) (e) 2-ethyl-1-butanamine; (f) dibenzylamine; (g) a B-lacta the following compounds: (28 pts) Pethylben (s) acetoacetic ester; (d) diethyl malonate: of each of the following reactions: (30 pts) 2. Identify the principal organic product of each of the (a) acetic anhydride and 2-pentanol (b) 4-methyl-3-penten-2-one and ammonia in water solut er solution (c) acetophenone (methyl phenyi ketone) and benzalder (d) methyl butanoate and LDA...
Use of Extraction to Isolate a Neutral Compound from a Mixture Containing an Acid or Base...
Use
of Extraction to Isolate a Neutral Compound from a Mixture
Containing an Acid or Base Impurity.
Part 4D
Hi guys I had a question about this lab. I am not sure how to
create a flow chart for it as well as what chemical equations it
needs. please let me know if you need more information.
layer. In the Optional Exercise, the sample contains a neutrum base impurity; however, a detailed procedure is not given. If you are assigned...
What is the correct name for the following compound? d) 5-oxo-3-octenoic acid What is the defining...
What is the correct name for the following compound? d) 5-oxo-3-octenoic acid What is the defining functional group of a carboxylic acid? a) an-H attached to a carbonyl group b) an-H attached to a carbon-carbon triple bond c) an-OH attached to a carbonyl group d) an -OH group attached to a O-C double bond e) an-OH group attached to an aromatic ring To convert a carboxylic acid to an aldehyde a) convert the acid to an acid chloride, then use...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is to learn how to use a separatory funnel to extract a single component away from other compounds in solution. To do so, we will apply the principles of solubility and acid-base behavior you’re seeing in class. One of the compounds is neutral in the acid-base sense. It has no ability to either donate or accept a proton from an aqueous solution, and will remain...
please identify the unknown and write a derivative Unknown compound 3 Clear liquid Physcial Properties Solubility...
please identify the unknown and write a derivative
Unknown compound 3 Clear liquid Physcial Properties Solubility Dissolve in ethyl ether Not dissolved in water Boiling point 77 IR spectrum Transmitance 3000 1000 2000 Wavenumber cm-1) Classification Positive test in Alkaline Iron (III) Hydroxamate test test CLASSIFICATION TESTS These tests must be done together with known AND FOLLOW PROCEDURE IN YOUR TEXT CARBOXYLIC ACIDS are detected by teating aqueous solutions with limus or pH paper. Also, disolve In NaHCO with bubbles...
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepa...
i need help with the postlab questions please
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepare a Grignard reagent, phenyl magnesium bromide, from bromobenzene and magnesium metal. The Grignard reagent will then react with methyl benzoate to form triphenylmethanol. Introduction Grignard reagents, such as organomagnesium halides, were discovered in 1910 by French chemist Victor Grignard. The Grignard reaction is one of the most general methods for carbon- carbon bond formation in all of organic chemistry....
hi, please help me with number 7. thank you
EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE HOCH, DISCUSSION The reduction of an aldehyde or ketone with sodium borohydride is straight forward and usually affords a high yield of the alcohol. The usual procedure (and the one employed in this experiment) involves dissolving the borohydride in 95% ethanol and adding the carbonyl compound to this solution. To ensure complete reaction, an excess of sodium borohydride is used. The reaction between sodium...
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 +...
Organic chemistry post-lab question: "Why is important
to add the alkyl halide dropwise in your reaction? (Hint: your
reaction is not heated, but you still need a water-cooled
condenser!)" Please answer in detail!
Here is a copy of the experiment, thank you!
The Grignard reaction is an important synthetic process by which a carbon-carbon bond is formed. Magnesium metal is first reacted with an organic halide. The resultant organo-magnesium halide (Grignard reagent) is then combined with a carbonyl compound, ultimately...
reaction mixture for 30 min, stirring the mixture rapidly during the process. The start of the reaction is indicated by a slight turbidity of the solution. The mixture may become more turbid as the reaction proceeds and eventually may turn a pale yellow. Allow the reaction mixture to cool to room temperature after the reflux period. Reaction of the Grignard reagent with CO2 :O MgX 1) CO2 (s) 2) HCI OH MgX) magnesium carboxylate complex Grignard reagent substituted benzoic acid...
1. Write the structural formula of each of the following co (1) m-chlorobenzoyl chloride; (b) p-ethylbenzamide: (©) (e) 2-ethyl-1-butanamine; (f) dibenzylamine; (g) a B-lacta the following compounds: (28 pts) Pethylben (s) acetoacetic ester; (d) diethyl malonate: of each of the following reactions: (30 pts) 2. Identify the principal organic product of each of the (a) acetic anhydride and 2-pentanol (b) 4-methyl-3-penten-2-one and ammonia in water solut er solution (c) acetophenone (methyl phenyi ketone) and benzalder (d) methyl butanoate and LDA...
Use
of Extraction to Isolate a Neutral Compound from a Mixture
Containing an Acid or Base Impurity.
Part 4D
Hi guys I had a question about this lab. I am not sure how to
create a flow chart for it as well as what chemical equations it
needs. please let me know if you need more information.
layer. In the Optional Exercise, the sample contains a neutrum base impurity; however, a detailed procedure is not given. If you are assigned...
What is the correct name for the following compound? d) 5-oxo-3-octenoic acid What is the defining functional group of a carboxylic acid? a) an-H attached to a carbonyl group b) an-H attached to a carbon-carbon triple bond c) an-OH attached to a carbonyl group d) an -OH group attached to a O-C double bond e) an-OH group attached to an aromatic ring To convert a carboxylic acid to an aldehyde a) convert the acid to an acid chloride, then use...
please identify the unknown and write a derivative
Unknown compound 3 Clear liquid Physcial Properties Solubility Dissolve in ethyl ether Not dissolved in water Boiling point 77 IR spectrum Transmitance 3000 1000 2000 Wavenumber cm-1) Classification Positive test in Alkaline Iron (III) Hydroxamate test test CLASSIFICATION TESTS These tests must be done together with known AND FOLLOW PROCEDURE IN YOUR TEXT CARBOXYLIC ACIDS are detected by teating aqueous solutions with limus or pH paper. Also, disolve In NaHCO with bubbles...
i need help with the postlab questions please
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepare a Grignard reagent, phenyl magnesium bromide, from bromobenzene and magnesium metal. The Grignard reagent will then react with methyl benzoate to form triphenylmethanol. Introduction Grignard reagents, such as organomagnesium halides, were discovered in 1910 by French chemist Victor Grignard. The Grignard reaction is one of the most general methods for carbon- carbon bond formation in all of organic chemistry....
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