Homework Answers
i) Primary alcohol to aldehyde : Most suitable are PCCin CH2Cl2
or DMP(Dess-Martin-Periodinane) which are employed in non-aqueous
medium
ii) primary alcohol to acid-
in aqueous medium oxidation, we cannot stop the reaction at
aldehyde state but oxidation to acid only happens. thus the most
suitable is Na2Cr2O7/H2SO4-H2O or Jones oxidation
(CrO3-acetone-H2O)
iii) secondary alcohol to ketone .As ketones are resistant to
oxidation we can use either DMP or PCC or evenNa2Cr2O7/H+ or CRo3
for this oxidation.
iv) secondary alcohol to ketone .As ketones are resistant to
oxidation we can use either DMP or PCC or evenNa2Cr2O7/H+ or CRo3
for this oxidation.
v) primary alcohol to acid- in aqueous medium oxidation, we cannot
stop the reaction at aldehyde state but oxidation to acid only
happens. thus the most suitable is Na2Cr2O7/H2SO4-H2O or Jones
oxidation (CrO3-acetone-H2O)
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3. For each of the following transformations select the most appropriate reagent(s). (6 points) . سئو...
4. For each of the following transformations select the most appropriate reagent(s). 0 - 0 $-...
4. For each of the following transformations select the most appropriate reagent(s). 0 - 0 $- a. 1) NaBH/EtOH 2) H:0 b. 1) LiAlH/Et, 2) H30 c. H , Pd/C d. None of the above e. All of the above 5. For each of the following transformations select the most appropriate reagent(s). (2 points) HO a. 1) NaBH/EtOH 2) H:0* b. 1) LiAlH4/Et20 2) H:0 c. None of the above d. All of the above
1. For each of the following transformations select the most appropriate reagent(s). (5 points) A. 1)...
1. For each of the following transformations select the most appropriate reagent(s). (5 points) A. 1) NaBH,/EtOH 2) H30* B. 1) LiAlH/Et20 2) H30* C. Hz, Pd/C D. None of the above E. All of the above
2. For each of the following transformations select the most appropriate reagent(s). (4 points) i Olovo...
2. For each of the following transformations select the most appropriate reagent(s). (4 points) i Olovo noon go orgot A. 1) NaBH/EtOH 2) H30* B. 1) LiAlH/Et20 2) H30* C. None of the above D. All of the above
Choose the most appropriate reagent(s) for the conversion of propyne and 2-methyl-1-tosyloxypropane to 5-methyl-2-hexyne. 1. reagent(s)...
Choose the most appropriate reagent(s) for the conversion of propyne and 2-methyl-1-tosyloxypropane to 5-methyl-2-hexyne. 1. reagent(s) :a 2. OTS TSCI, Et3N он NaNH2, NH3 3NaOH, H20 H2SO4 KOCH2CH3, HOCH2CH3 NH3
2. Supply the missing reagent(s) and/or products for the following transformations. Include the appropriate stereochemical specifics....
2. Supply the missing reagent(s) and/or products for the following transformations. Include the appropriate stereochemical specifics. (8 points) 1. BH, THE 2 H . NaOH CH.CH NASH DMSO
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are...
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are listed in the text box above this question (reagents A-K). You will type in ONE letter choice for each reaction from the list above. No reagent set will be used more than once, but not every reagent set will be used. NH2 CN o Br OH Br 5 OH 6 Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: Reaction 6: Below is...
11. Choose the best reagent for carrying out the following reactions from the list below. Place...
11. Choose the best reagent for carrying out the following reactions from the list below. Place the letter of the reagent(s) in the box over the reaction arrow. Use only one letter per box. (5 points) CH: OH Cºca C ОТН: A. NaH, then CH31 B. NaOCH3, CH3OH C. m-CICH4CO3H D. CH3MgBr in ether, then H30+ E. warm H2SO4/H20 F. Hg(O2CCF3)2, CH3OH G. H2/Pd H. PCC, CH2Cl2 I. Cl2, H2O J. LiAlH4 in ether, then H3O+
Please select the most appropriate reagent for the following reaction OH ? a) 1) 03 2)...
Please select the most appropriate reagent for the following reaction OH ? a) 1) 03 2) Zn b) 1) BH3, THE 2) H202, NaBH c) PCC d) LIAIHA Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a) a b) с d d) Methyl ketones are prepared by the mercury-catalyzed hydration of terminal alkynes Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a...
6. What would be the best choice of reagent to perform the following transformation? a) HCI...
6. What would be the best choice of reagent to perform the following transformation? a) HCI then NaOH, H2O b) NaOH, H20 c) t-BuOK, t-BuOH H3C OH d) H2SO4 or H3PO4 e) All of the above f) Only A and D g) Only B and C 7. What is the major organic product obtained from the following sequenced of reactions? a) (S)-3-iodocyclopentene b) (R)-3-iodocyclopentene ОН c) 3-iodocyclopentene Tsci pyridine Nal d) (S)-2-iodocyclopentene DMSO e) All of the above f) None...
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are...
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are listed in the text box above this question (reagents A-K). You will type in ONE letter choice for each reaction from the list above. No reagent set will be used more than once, but not every reagent set will be used. NH 2 CN OH OH Br 5 OH 6 you Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: Reaction 6: U...
4. For each of the following transformations select the most appropriate reagent(s). 0 - 0 $- a. 1) NaBH/EtOH 2) H:0 b. 1) LiAlH/Et, 2) H30 c. H , Pd/C d. None of the above e. All of the above 5. For each of the following transformations select the most appropriate reagent(s). (2 points) HO a. 1) NaBH/EtOH 2) H:0* b. 1) LiAlH4/Et20 2) H:0 c. None of the above d. All of the above
1. For each of the following transformations select the most appropriate reagent(s). (5 points) A. 1) NaBH,/EtOH 2) H30* B. 1) LiAlH/Et20 2) H30* C. Hz, Pd/C D. None of the above E. All of the above
2. For each of the following transformations select the most appropriate reagent(s). (4 points) i Olovo noon go orgot A. 1) NaBH/EtOH 2) H30* B. 1) LiAlH/Et20 2) H30* C. None of the above D. All of the above
Choose the most appropriate reagent(s) for the conversion of propyne and 2-methyl-1-tosyloxypropane to 5-methyl-2-hexyne. 1. reagent(s) :a 2. OTS TSCI, Et3N он NaNH2, NH3 3NaOH, H20 H2SO4 KOCH2CH3, HOCH2CH3 NH3
2. Supply the missing reagent(s) and/or products for the following transformations. Include the appropriate stereochemical specifics. (8 points) 1. BH, THE 2 H . NaOH CH.CH NASH DMSO
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are listed in the text box above this question (reagents A-K). You will type in ONE letter choice for each reaction from the list above. No reagent set will be used more than once, but not every reagent set will be used. NH2 CN o Br OH Br 5 OH 6 Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: Reaction 6: Below is...
11. Choose the best reagent for carrying out the following reactions from the list below. Place the letter of the reagent(s) in the box over the reaction arrow. Use only one letter per box. (5 points) CH: OH Cºca C ОТН: A. NaH, then CH31 B. NaOCH3, CH3OH C. m-CICH4CO3H D. CH3MgBr in ether, then H30+ E. warm H2SO4/H20 F. Hg(O2CCF3)2, CH3OH G. H2/Pd H. PCC, CH2Cl2 I. Cl2, H2O J. LiAlH4 in ether, then H3O+
Please select the most appropriate reagent for the following reaction OH ? a) 1) 03 2) Zn b) 1) BH3, THE 2) H202, NaBH c) PCC d) LIAIHA Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a) a b) с d d) Methyl ketones are prepared by the mercury-catalyzed hydration of terminal alkynes Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a...
6. What would be the best choice of reagent to perform the following transformation? a) HCI then NaOH, H2O b) NaOH, H20 c) t-BuOK, t-BuOH H3C OH d) H2SO4 or H3PO4 e) All of the above f) Only A and D g) Only B and C 7. What is the major organic product obtained from the following sequenced of reactions? a) (S)-3-iodocyclopentene b) (R)-3-iodocyclopentene ОН c) 3-iodocyclopentene Tsci pyridine Nal d) (S)-2-iodocyclopentene DMSO e) All of the above f) None...
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are listed in the text box above this question (reagents A-K). You will type in ONE letter choice for each reaction from the list above. No reagent set will be used more than once, but not every reagent set will be used. NH 2 CN OH OH Br 5 OH 6 you Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: Reaction 6: U...
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