Homework Answers
Grignard reagents are highly reactive.It is basic in
nature
Thus when alcohol is used as solvent it will react with
acidic protons present in alcohols. Also when water is
used the reagent will react and form alkane. Since ether
does not have acidic protons there will be no reaction
between
grignard reagent and ether.
In butanol there is strong inter molecular force of
attraction
between molecules due to the presence of hydrogen bonding.
The compound with stronger intermolecular force will have
higher boiling points. ether and pentane does not have
hydrogen
bonds. Thus butanol has highest B.P among the three.
Add Answer to:
lo (6 points) a. Why must ether used as solvent for the Grignard be scrupulously free...
7. Diethyl ether and 1-butanol are isomers their boiling points are very different. Explain why these...
7. Diethyl ether and 1-butanol are isomers their boiling points are very different. Explain why these two compounds have dramatically different boiling points. (2 pt.) CH3CH2OCH CH3 CH3CH2CH2CH OH Diethyl ether butanol
1. (6 pts) Provide two different syntheses for 1,1-diphenyl-1-butanol starting from a carbonyl compound and using a...
1. (6 pts) Provide two different syntheses for 1,1-diphenyl-1-butanol starting from a carbonyl compound and using a Grignard reagent. Synthetic Route 1: carbonyl Grignard reagent a) THE b) H30* work up 1,1-diphenyl-1-butanol Synthetic Route 2: carbonyl Grignard reagent a) THF b) H30* work up ОН 1.1-diphenyl-1-butanol 2. (3 pts) The use of Grignard reagents requires scrupulously dry aprotic solvents such as diethyl ether or tetrahydrofuran. Please explain why the solvents need to be scrupulously dry. To support your reason, show...
6 QUESTION 6 (1 point) Which of the following solvent(s) can be used for the Grignard...
6 QUESTION 6 (1 point) Which of the following solvent(s) can be used for the Grignard reaction? methanol, ethanol, water, diethyl ether, THF all of them in the list methanol and ethanol diethyl ether and THF water Click Save and Submit to save and submit. Click Save All Answers to save all answers F3
Describe the classification of alcohols; describe the boiling points and solubility of alcohols, phenols, and ethers....
Describe the classification of alcohols; describe the boiling points and solubility of alcohols, phenols, and ethers. Classify each of the following alcohols as primary (1 degree), secondary (2 degree) or tertiary (3 degree); Classify each of the following alcohols as primary (1 degree)j, secondary (2 degree), or tertiary (3 degree): Predict the compound with the higher boiling point in each of the following pairs: a. ethane or methanol b. diethyl ether or 1-butanol c. 1-butanol or pentane Predict the compound...
Briefly, explain why your 3.0 mL reaction vial and diethyl ether solvent need to be completely...
Briefly, explain why your 3.0 mL reaction vial and diethyl ether solvent need to be completely dry (free of water)? Support your argument with a reaction equation between your Grignard reagent and water. What does the water do to the phenyl magnesium bromide? Briefly, explain why 3 M HCI (aq.) = [H_3O^+/CI-] hydrochloric acid used instead of a base for the work-up procedure? What did you observe when a low pH was obtained? What was the purpose of NaHSO_3 (sodium...
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepa...
i need help with the prelab 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....
The boiling points of t-butyl methyl ether (2-methoxy-2-methylpropane) and n-butyl methyl ether (1-methoxybutane) differ...
The boiling points of t-butyl methyl ether
(2-methoxy-2-methylpropane) and n-butyl methyl ether
(1-methoxybutane) differ by 16 degrees (71 and 55 °C), even though
they have the same molecular weight. Draw the two structures
below:
The boiling points of t-butyl methyl ether (2-methoxy-2-methylpropane) and n-butyl methyl ether (1- methoxybutane) differ by 16 degrees (71 and 55 °C), even though they have the same molecular weight. Draw the two structures below: Which compound has the higher boiling point and why? 1-methoxybutane has...
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....
S RROwn as nucleophilic addition. The C-O bond is highly polarized, making carbonyl compounds ele...
S RROwn as nucleophilic addition. The C-O bond is highly polarized, making carbonyl compounds electrophilic at carbon. If the Grignard reagent reacts with an aldehyde, ketone or ester, the ultimate product is an alcohol. Overall Reaction 0 Br Me PartA Part B Pre-lab questions (15 points) Show the mechanism of the reaction of bromobenzene with magnesium metal in anhydrous diethyl ether There are many inert solvents that could be used but diethyl ether was chosen because it can assist the...
please explain why! 11. (2 points) Circle the member of each pair that is more soluble...
please explain why!
11. (2 points) Circle the member of each pair that is more soluble in water. a) oethyl ether pentane b) OH 1-butanol OH ethanol OH d) acetone cyclohexanone
7. Diethyl ether and 1-butanol are isomers their boiling points are very different. Explain why these two compounds have dramatically different boiling points. (2 pt.) CH3CH2OCH CH3 CH3CH2CH2CH OH Diethyl ether butanol
1. (6 pts) Provide two different syntheses for 1,1-diphenyl-1-butanol starting from a carbonyl compound and using a Grignard reagent. Synthetic Route 1: carbonyl Grignard reagent a) THE b) H30* work up 1,1-diphenyl-1-butanol Synthetic Route 2: carbonyl Grignard reagent a) THF b) H30* work up ОН 1.1-diphenyl-1-butanol 2. (3 pts) The use of Grignard reagents requires scrupulously dry aprotic solvents such as diethyl ether or tetrahydrofuran. Please explain why the solvents need to be scrupulously dry. To support your reason, show...
6 QUESTION 6 (1 point) Which of the following solvent(s) can be used for the Grignard reaction? methanol, ethanol, water, diethyl ether, THF all of them in the list methanol and ethanol diethyl ether and THF water Click Save and Submit to save and submit. Click Save All Answers to save all answers F3
Describe the classification of alcohols; describe the boiling points and solubility of alcohols, phenols, and ethers. Classify each of the following alcohols as primary (1 degree), secondary (2 degree) or tertiary (3 degree); Classify each of the following alcohols as primary (1 degree)j, secondary (2 degree), or tertiary (3 degree): Predict the compound with the higher boiling point in each of the following pairs: a. ethane or methanol b. diethyl ether or 1-butanol c. 1-butanol or pentane Predict the compound...
Briefly, explain why your 3.0 mL reaction vial and diethyl ether solvent need to be completely dry (free of water)? Support your argument with a reaction equation between your Grignard reagent and water. What does the water do to the phenyl magnesium bromide? Briefly, explain why 3 M HCI (aq.) = [H_3O^+/CI-] hydrochloric acid used instead of a base for the work-up procedure? What did you observe when a low pH was obtained? What was the purpose of NaHSO_3 (sodium...
i need help with the prelab 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....
The boiling points of t-butyl methyl ether
(2-methoxy-2-methylpropane) and n-butyl methyl ether
(1-methoxybutane) differ by 16 degrees (71 and 55 °C), even though
they have the same molecular weight. Draw the two structures
below:
The boiling points of t-butyl methyl ether (2-methoxy-2-methylpropane) and n-butyl methyl ether (1- methoxybutane) differ by 16 degrees (71 and 55 °C), even though they have the same molecular weight. Draw the two structures below: Which compound has the higher boiling point and why? 1-methoxybutane has...
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....
S RROwn as nucleophilic addition. The C-O bond is highly polarized, making carbonyl compounds electrophilic at carbon. If the Grignard reagent reacts with an aldehyde, ketone or ester, the ultimate product is an alcohol. Overall Reaction 0 Br Me PartA Part B Pre-lab questions (15 points) Show the mechanism of the reaction of bromobenzene with magnesium metal in anhydrous diethyl ether There are many inert solvents that could be used but diethyl ether was chosen because it can assist the...
please explain why!
11. (2 points) Circle the member of each pair that is more soluble in water. a) oethyl ether pentane b) OH 1-butanol OH ethanol OH d) acetone cyclohexanone
Most questions answered within 3 hours.
-
An short-seller in Tesla is worried the latest management
earnings forecast is too aggressive and the...
asked 34 minutes ago -
Question 3 (1 point)
Fill in the blank. Speed Car Rental company found that the tire...
asked 34 minutes ago -
1. A copper wire is 26.61 cm long and weighs 1.265 g. The
density of copper...
asked 12 minutes ago -
Remember that a concept sketch consists of a sketch (or
series of sketches), labels, and complete...
asked 14 minutes ago -
on a newly discovered planet, the period of a pendulum with a
length of 2 m...
asked 16 minutes ago -
Why [M(CN)6] is not organometallic even it has metal
to carbon bond too
asked 23 minutes ago -
mstar electric has a bond issue outstanding that has a 20 year
life, a $1,000 par...
asked 30 minutes ago -
This is a Business Writing Question:
Common Types of Faulty Sentence Logic:
A. Mixed constructions
B....
asked 31 minutes ago -
Skinner asserts that science, and the common view of science, has
been tarnished. Explain his evidence...
asked 33 minutes ago -
A grocery store's receipts show that Sunday customer purchases
have a skewed distribution with a mean...
asked 40 minutes ago -
A 0.035 mol sample of a weak acid, HA, is dissolved in 437 mL of
water...
asked 51 minutes ago -
a sample of Ar gas has a volume of 6.30 L with an unknown
pressure. the...
asked 52 minutes ago