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2. (3 pts) The use of Grignard reagents requires scrupulously dry aprótic solvents such as diethyl...
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...
5. Consider the following solvents for potential use in a Grignard reaction. a) Acetone b) Methanol...
5. Consider the following solvents for potential use in a Grignard reaction. a) Acetone b) Methanol c) Tetrahydrofuran For each solvent, indicate (yes or no) whether or not the solvent will be suitable for use in a Grignard reaction. If yes, explain why. If no, explain why not, and draw a balanced reaction scheme for the side reaction (NOT the desired reaction) that will likely occur instead
help with 23 HAPTER 14: ORGANOMETALLIC COMPOUNDS TWO common solvents for Grignard reagents are: 1) ethanol...
help with 23
HAPTER 14: ORGANOMETALLIC COMPOUNDS TWO common solvents for Grignard reagents are: 1) ethanol and diethyl ether. 2) diethyl ether and tetrahydrofuran (THF). 3) tetrahydrofuran (THF) and toluene. 4) water and ethanol. What is the product of the following reaction? CH, CH. CHCH.CH - ether 2) 2-ethyl-1-pentanol 2) 2-ethyl-1-butanol 3) 3-pentanel 4) 3-aethyl-1-pentanc: The reaction of benzyl sagnesius bromide (C.HSCHMB) with acetaldehyde (CHC40) followed by hydrolysis yields: 1) 1-phenyl-1-propanol 2) 1-phenyl-2-propanol 3) 2-phenyl-2-propanel 4 .-ghen -propane: mo synthesize...
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....
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...
Problem set Name 1. Please list all products and reagents in the box. (10 pts.) ︿сно...
Problem set Name 1. Please list all products and reagents in the box. (10 pts.) ︿сно 2. Which solvent would be best for the reaction in Step 1 and why would that solvent be best? (5 pts.) MgBr 1.) 2.) H30. OH a. Water b. Ethanol c. Tetrahydrofuran d. Acetone Provide reasoning for your selection. To receive full credit you should clearly explain why all other solvents are inferior compared to the solvent you selected. (10 pts.)
( ) 1. Which of the following solvents can be used with Grignard reagents? A. H2O...
( ) 1. Which of the following solvents can be used with Grignard reagents? A. H2O B. methanol C. diethyl ether D. phenol ( ) 2. Which of the following reagents is appropriate to reduce a carboxylic acid into a primary alcohol? A. LiAlH4 B. NaBH4 C. Zn(Hg)/HCl D. Na2Cr2O7/H2SO4 ( ) 3. What is the correct IUPAC name of the following compound A. 5-bromo-2-methyl phenol B. 4-bromo-2-methylphenol C. 5-bromo-2-hydroxyltoluene D. 1-bromo-4-methylphenol ( ) 4. Which of the following compounds...
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....
Preparation of Benzoic Acid using a Grignard Reagent URGENT 1. During your Grignard formation, a small...
Preparation of Benzoic Acid using a Grignard Reagent URGENT 1. During your Grignard formation, a small amount of benzene is formed. Provide a brief explanation and mechanism to explain this observation. 2. During your Grignard formation, a small amount of biphenyl is formed. Provide a brief explanation and mechanism to explain this observation. 3. What mass of water would be required to destroy the phenylmagnesium bromide that you prepared in this experiment? What volume does this represent? 4. Why is...
This is for the Grignard Reaction laboratory. Please help me answer this question, much appreciated. 1....
This is for the Grignard Reaction laboratory. Please help me answer this question, much appreciated. 1. If a student performing Laboratory with Grignard reaction accidently used acetone as the reaction solvent instead of diethyl ether, what would the major organic product(s) be? Draw the structure of the product(s) (no mechanism necessary). b. What was the purpose of adding magnesium sulfate in this experiment? c. Grignard reagents react with both aldehyde and ketone functional groups. How do you predict the reaction...
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...
5. Consider the following solvents for potential use in a Grignard reaction. a) Acetone b) Methanol c) Tetrahydrofuran For each solvent, indicate (yes or no) whether or not the solvent will be suitable for use in a Grignard reaction. If yes, explain why. If no, explain why not, and draw a balanced reaction scheme for the side reaction (NOT the desired reaction) that will likely occur instead
help with 23
HAPTER 14: ORGANOMETALLIC COMPOUNDS TWO common solvents for Grignard reagents are: 1) ethanol and diethyl ether. 2) diethyl ether and tetrahydrofuran (THF). 3) tetrahydrofuran (THF) and toluene. 4) water and ethanol. What is the product of the following reaction? CH, CH. CHCH.CH - ether 2) 2-ethyl-1-pentanol 2) 2-ethyl-1-butanol 3) 3-pentanel 4) 3-aethyl-1-pentanc: The reaction of benzyl sagnesius bromide (C.HSCHMB) with acetaldehyde (CHC40) followed by hydrolysis yields: 1) 1-phenyl-1-propanol 2) 1-phenyl-2-propanol 3) 2-phenyl-2-propanel 4 .-ghen -propane: mo synthesize...
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....
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...
Problem set Name 1. Please list all products and reagents in the box. (10 pts.) ︿сно 2. Which solvent would be best for the reaction in Step 1 and why would that solvent be best? (5 pts.) MgBr 1.) 2.) H30. OH a. Water b. Ethanol c. Tetrahydrofuran d. Acetone Provide reasoning for your selection. To receive full credit you should clearly explain why all other solvents are inferior compared to the solvent you selected. (10 pts.)
( ) 1. Which of the following solvents can be used with Grignard reagents? A. H2O B. methanol C. diethyl ether D. phenol ( ) 2. Which of the following reagents is appropriate to reduce a carboxylic acid into a primary alcohol? A. LiAlH4 B. NaBH4 C. Zn(Hg)/HCl D. Na2Cr2O7/H2SO4 ( ) 3. What is the correct IUPAC name of the following compound A. 5-bromo-2-methyl phenol B. 4-bromo-2-methylphenol C. 5-bromo-2-hydroxyltoluene D. 1-bromo-4-methylphenol ( ) 4. Which of the following compounds...
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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