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After a sample of optically pure (S)-2-ethyl-cyclohexanone is dissolved in an aqueous solution for several hours,...
Trearment of (S)-(+)-5methylcyclohex-2-enone with lithium dimethlycuprate gives, after protonolysis, a good yield of a mixture containing...
Trearment of
(S)-(+)-5methylcyclohex-2-enone with lithium dimethlycuprate gives,
after protonolysis, a good yield of a mixture containing mostly
dextrorotary Ketone A and a trace of optically inactive isomer B.
Treatment of A with zinc amalgam and HCl affords opticlly active
hydrocarbon C (C8H16). Compound B, which exhibits only 5 unique
signals in its 13C NMR spectrum, undergoes an aldol condensation
with NaOEt and benzaldehyde to produce optically active compound D.
Identify componds A-Dincluding stereochemical configurations.
Treatment of (S)- (+-5-methylcyclohex-2-enone with lithium...
9 & 10. Treatment of the optically pure (S)- cyclohexanone (1) shown below with sodium methane...
9 & 10. Treatment of the optically pure (S)- cyclohexanone (1) shown below with sodium methane thiolate in THF (tetrahydrofuran the solvent) gives products A and B that both have the same molecular formula CgH14SO. Compound A and B are easily physically separated by distillation with A having the lower boiling point and it is found that the optical rotation of the purified and separated substances A and B [ajo 0. It is experimentally found that the rate of formation...
Question 2: An aqueous solution containing 4.23 g of an optically pure compound, (+)-Porgsareawesome (MW = 213.4 g/...
Question 2: An aqueous solution containing 4.23 g of an optically pure compound, (+)-Porgsareawesome (MW = 213.4 g/mol) was diluted to 700.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was +90' at 25.0'C. a) On the answer sheet provided, set up the equation to give the compound's specific T = rotation - you do not need to do any actual math! Hint: Make sure to use proper units. Use the equation at...
Question 2: An aqueous solution containing 4.23 g of an optically pure compound, (+)-Porgsareawesome (MW=213.4 g/mol)...
Question 2: An aqueous solution containing 4.23 g of an optically pure compound, (+)-Porgsareawesome (MW=213.4 g/mol) was diluted to 700.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was +90' at 25.0'C. a) On the answer sheet provided, set up the equation to give the compound's specific rotation - you do not need to do any actual math! Hint: Make sure to use proper units. Use the equation at left as your guide:...
Practice Problem 21.55 When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its...
Practice Problem 21.55 When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its optical activity. Explain this observation and draw a mechanism that shows how racemization och For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Meow 21.55a Get help answering Molecular Drawing ques Correct Draw (5)-2-methylcyclopentanone. Attempts: 2 of 4 used Step...
Make sure the reaction table described above is completed in your notebook.
Prelab questions:1. Make sure the reaction table described above is completed in your notebook.2. Two benzaldehyde molecules combine with one acetone molecule in this aldol reaction. If someone uses 5.0 mL of benzaldehyde and 2.5 mL of acetone to try to improve the yield of product, is this the correct ratio of molecules so that there is no excess? Why or why not?The Aldol Reaction: Synthesis of DibenzalacetonePurpose: Introduce the student to the hands-on chemistry of carbonyl condensations.Warning: Dispose of...
Please help with pre-lab questions. Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
Synthesis of 1-Bromobutane: An SN2 Reaction Pre-Laboratory Exercises PRE-LABORATORY EXERCISES NAME: Cynthesis of 1-Bromobutane: An SN...
Synthesis of 1-Bromobutane: An SN2 Reaction Pre-Laboratory
Exercises
PRE-LABORATORY EXERCISES NAME: Cynthesis of 1-Bromobutane: An SN 2 Reaction Butylbromide was prepared by refluxing in a 100-ml round bottomed flask a solution containing 13:35 Br 15 ml of water, 10 mL of n-butyl alcohol. 15 ml of concentrated H.SO. and a few boiling stories, 1. 2. R." d 1.275 laborales Nel CH3CH2CH2CH2OH + NaBr H2SO4 Superletalyst CHCH2CH2CHBr + NaHSO + HO (eq. 16) 1-butanol bp 118 C 1-bromobutane d 0.810 bp...
Trearment of
(S)-(+)-5methylcyclohex-2-enone with lithium dimethlycuprate gives,
after protonolysis, a good yield of a mixture containing mostly
dextrorotary Ketone A and a trace of optically inactive isomer B.
Treatment of A with zinc amalgam and HCl affords opticlly active
hydrocarbon C (C8H16). Compound B, which exhibits only 5 unique
signals in its 13C NMR spectrum, undergoes an aldol condensation
with NaOEt and benzaldehyde to produce optically active compound D.
Identify componds A-Dincluding stereochemical configurations.
Treatment of (S)- (+-5-methylcyclohex-2-enone with lithium...
9 & 10. Treatment of the optically pure (S)- cyclohexanone (1) shown below with sodium methane thiolate in THF (tetrahydrofuran the solvent) gives products A and B that both have the same molecular formula CgH14SO. Compound A and B are easily physically separated by distillation with A having the lower boiling point and it is found that the optical rotation of the purified and separated substances A and B [ajo 0. It is experimentally found that the rate of formation...
Question 2: An aqueous solution containing 4.23 g of an optically pure compound, (+)-Porgsareawesome (MW = 213.4 g/mol) was diluted to 700.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was +90' at 25.0'C. a) On the answer sheet provided, set up the equation to give the compound's specific T = rotation - you do not need to do any actual math! Hint: Make sure to use proper units. Use the equation at...
Question 2: An aqueous solution containing 4.23 g of an optically pure compound, (+)-Porgsareawesome (MW=213.4 g/mol) was diluted to 700.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was +90' at 25.0'C. a) On the answer sheet provided, set up the equation to give the compound's specific rotation - you do not need to do any actual math! Hint: Make sure to use proper units. Use the equation at left as your guide:...
Practice Problem 21.55 When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its optical activity. Explain this observation and draw a mechanism that shows how racemization och For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Meow 21.55a Get help answering Molecular Drawing ques Correct Draw (5)-2-methylcyclopentanone. Attempts: 2 of 4 used Step...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
Synthesis of 1-Bromobutane: An SN2 Reaction Pre-Laboratory
Exercises
PRE-LABORATORY EXERCISES NAME: Cynthesis of 1-Bromobutane: An SN 2 Reaction Butylbromide was prepared by refluxing in a 100-ml round bottomed flask a solution containing 13:35 Br 15 ml of water, 10 mL of n-butyl alcohol. 15 ml of concentrated H.SO. and a few boiling stories, 1. 2. R." d 1.275 laborales Nel CH3CH2CH2CH2OH + NaBr H2SO4 Superletalyst CHCH2CH2CHBr + NaHSO + HO (eq. 16) 1-butanol bp 118 C 1-bromobutane d 0.810 bp...
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