Homework Answers
All the synthetic routes are given below
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b. Prepare 2-nitrophenol from benzene (1.5 points) C. Prepare 4-(1-bromopropyl)-3-iodobenzenesulfonic acid from propylbenzene (2 points) several...
1. Which of the following is the strongest acid? a) 4-methylphenol b) 4-nitrophenol c) 3-nitrophenol d)...
1. Which of the following is the strongest acid? a) 4-methylphenol b) 4-nitrophenol c) 3-nitrophenol d) 4-fluorophenol 2. Which of the following is the strongest acid? a) 2-fluorobutanoic acid b) 2-methylbutanoic acid c) 3-fluorobutanoic acid d) 4-fluorobutanoic acid 3. Which of the following is the strongest base? a) 4-methylaniline b) 4-nitroanaline c) 3-methoxyaniline d) 4-methoxyaniline 4. Which of the following is the strongest base? a) NH2CH2CN b) NH2CH2CH2CN c) NH2CH2CH2OH d) NH2CH2CH2CH2CH3
Devise the synthesis for the following 1. chloroethane from ethane 2. 2-bromobutane from 2-butene 3.p- nitrophenol...
Devise the synthesis for the following 1. chloroethane from ethane 2. 2-bromobutane from 2-butene 3.p- nitrophenol from phenol 4. p-nitrotoluene from benzene 5. bromobenzene from benzene 6. cyclohexene from 1,3-butadiene 7. polypropylene from propylene
10. How can p-aminobenzoic acid (a sunscreen) be synthesized from benzene? (Note that sometimes more than...
10. How can p-aminobenzoic acid (a sunscreen) be synthesized from benzene? (Note that sometimes more than one isomer will be obtained, which is fine as long as the desired isomer is one of the major products.) several steps HOOC NH2 A)) 1.CH3CI, AİCİ3 3.KMnO4 . CH CI, AICl 4.KMnO 4. Sn, HCI 2. IINO, H2SO4 )1. HNO3, H2SO4 2. Sn, HCI C) 1. HNO, HSO42. CHCI, AIC D) 1. CHCl, AlCl KMO 4.KMnO 4. Sn, HCI 3. Sn, HCI 3....
3. Draw the structural formulas for the following compounds. (10 points, 2 each) a. 2-propanol b....
3. Draw the structural formulas for the following compounds. (10 points, 2 each) a. 2-propanol b. 2-methyl-5-hexene-2-ol c. 3-cyclohexenol d. 4-nitrophenol e. phenol 4. Classify the following substituents as ortho/para or meta directing and activating or deactivating (two part answer for each group) (note the line 34 indicates where the group is attached to the benzene ring. (12points, 2 each) NH2 Ooh &r HC-CH₃ No? QH
Biochemistry 4. The ionization of p-nitrophenol is shown below (pKa = 7.0): NO2 он weak acid...
Biochemistry
4. The ionization of p-nitrophenol is shown below (pKa = 7.0): NO2 он weak acid conjugate base a. (4 points) Identify the weak acid and conjugate base. b. (4 points)At pH 7, what are the relative concentrations of ionized and un-ionized p- nitrophenol? c. (4 points)If enough concentrated hydrochloric acid is added to a solution of p-nitrophenol to lower the pH from 7 to 5, what will happen to the relative concentrations of the ionized and un-ionized forms? d....
1) 3-Fluorophenol has a pKaof 8.40. 4-Nitrophenol has a pKa of 7.16. 3-Chlorobenzoic acid has a...
1) 3-Fluorophenol has a pKaof 8.40. 4-Nitrophenol has a pKa of 7.16. 3-Chlorobenzoic acid has a pKa of 3.82. You will need the following information: The pKa of HCl is –7; pKa of carbonic acid is 6.52 and the pKa of water is 15. a) You have a mixture of 3-fluorophenol and 4-nitrophenol that you wish to separate by extraction. The mixture is dissolved in methylene chloride. Why would reacting the mixture with an aqueous solution of NaHCO3NOT separate one...
starting from benzene as a substrate receive the following compounds: (9 points) (b) (c) CH3 CI...
starting from benzene as a substrate receive the following
compounds: (9 points)
(b) (c) CH3 CI NH2 OCH NH2
2.4 Predict the product… ---------------------- 2.5 Predict the product of this reaction… Propylbenzene Benzene Ethyl...
2.4 Predict the product…
----------------------
2.5 Predict the product of this reaction…
Propylbenzene
Benzene
Ethylbenzene
Benzenesulfonic acid
-------------------------------------
3.1 What is the absolute configuration around C-2 and C-3?
S, R
R, S
R, R
S, S
E, Z
--------------------------------------
3.2 How many stereogenic carbons are in the following
molecule?
0, 1, 2, 3, or 4
-----------------------------------
3.3 What is the order of priority for the groups attached to the
stereogenic center?
propyl > OH > ethyl > H
Ethyl >...
Provide a skeletal line structure for the following compounds: a. 2-ethyl-3-methyl-1-propylbenzene b. Trans-4-methylpent-2-ene c. 2,4-dimethyl-3-ethylhexane
Provide a skeletal line structure for the following compounds: a. 2-ethyl-3-methyl-1-propylbenzene b. Trans-4-methylpent-2-ene c. 2,4-dimethyl-3-ethylhexane
1. 2. 3. Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters...
1.
2.
3.
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: benzene (pK. 43), and ammonia (pKa -36). -D ids of ines are benzene iok i NH2 NH3+ amide benzene ammonia bzene anion a) The stronger acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, e.g. ac)
10. How can p-aminobenzoic acid (a sunscreen) be synthesized from benzene? (Note that sometimes more than one isomer will be obtained, which is fine as long as the desired isomer is one of the major products.) several steps HOOC NH2 A)) 1.CH3CI, AİCİ3 3.KMnO4 . CH CI, AICl 4.KMnO 4. Sn, HCI 2. IINO, H2SO4 )1. HNO3, H2SO4 2. Sn, HCI C) 1. HNO, HSO42. CHCI, AIC D) 1. CHCl, AlCl KMO 4.KMnO 4. Sn, HCI 3. Sn, HCI 3....
3. Draw the structural formulas for the following compounds. (10 points, 2 each) a. 2-propanol b. 2-methyl-5-hexene-2-ol c. 3-cyclohexenol d. 4-nitrophenol e. phenol 4. Classify the following substituents as ortho/para or meta directing and activating or deactivating (two part answer for each group) (note the line 34 indicates where the group is attached to the benzene ring. (12points, 2 each) NH2 Ooh &r HC-CH₃ No? QH
Biochemistry
4. The ionization of p-nitrophenol is shown below (pKa = 7.0): NO2 он weak acid conjugate base a. (4 points) Identify the weak acid and conjugate base. b. (4 points)At pH 7, what are the relative concentrations of ionized and un-ionized p- nitrophenol? c. (4 points)If enough concentrated hydrochloric acid is added to a solution of p-nitrophenol to lower the pH from 7 to 5, what will happen to the relative concentrations of the ionized and un-ionized forms? d....
starting from benzene as a substrate receive the following
compounds: (9 points)
(b) (c) CH3 CI NH2 OCH NH2
2.4 Predict the product…
----------------------
2.5 Predict the product of this reaction…
Propylbenzene
Benzene
Ethylbenzene
Benzenesulfonic acid
-------------------------------------
3.1 What is the absolute configuration around C-2 and C-3?
S, R
R, S
R, R
S, S
E, Z
--------------------------------------
3.2 How many stereogenic carbons are in the following
molecule?
0, 1, 2, 3, or 4
-----------------------------------
3.3 What is the order of priority for the groups attached to the
stereogenic center?
propyl > OH > ethyl > H
Ethyl >...
1.
2.
3.
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. The pKa's for the acids of interest are: benzene (pK. 43), and ammonia (pKa -36). -D ids of ines are benzene iok i NH2 NH3+ amide benzene ammonia bzene anion a) The stronger acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, e.g. ac)
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