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143 Henchone is a terpenoid tchat can be isolated from fennel oll. )-Fenchone has been sy...
Integrated Problem 22.90 Incorrect. In the first asymmetric synthesis of (-)-(5,5)-homaline, a symmetric alkaloid isolated in...
Integrated Problem 22.90 Incorrect. In the first asymmetric synthesis of (-)-(5,5)-homaline, a symmetric alkaloid isolated in the early 1970s, a key intermediate was compound 2 (Tetradhedron Lett. 2012, 53, 1119-1121). Provide the reagents for converting compound 1 into compound 2. Make the tertiary amine at first. 'N, Me HN Two steps .CO.Me co Me Ph Ph 1 2 Choose from the list of reagents: NH NH Hyo, Na ByCN b. HjO", NBH CN HO. NaBHCN H H HC CH d....
VSNa 938 CHAPTER 20 AMINES g with benzene or toluene, outline a sy nthesis of each of the followi...
Question 31 with all the transformations
VSNa 938 CHAPTER 20 AMINES g with benzene or toluene, outline a sy nthesis of each of the following compounds using diazonium salts as intermediates. (You need not repeat syntheses carried out in earlier parts of this problem.) (o) CH3 (I) 1,3-Dibromo-2-iodobenzene a) p-Fluorotoluene он o-lodotoluene (c) p-Cresol (d) m-Dichlorobenzene (e) m-CeH4(CN)2 (f) m-Bromobenzonitrile (g) 1,3-Dibromo-5-nitrobenzene (h) 3,5-Dibromoaniline CH3 CN CH3 (n) CH3 4.5-Tribromophenol ) 3,4.5-Tribromobenzonitrile (k) 2,6-Dibromobenzoic acid 20.32 Write equations for simple...
A tetrapeptide with the sequence, (lysine-isoleucine-asparatate-seriene), has been isolated from a protein hydrolysate mixture. A solution of...
A tetrapeptide with the sequence, (lysine-isoleucine-asparatate-seriene), has been isolated from a protein hydrolysate mixture. A solution of the tetrapeptide (500. ml of 0.80 M) is mistakenly left out of the freezer for several days, and the investigator suspects that trace amounts of proteolytic enzymes may be present. A. Explain (using a minimum of words) how the investigator can determine by titration whether the solution contains the intact tetrapeptide or an equimolar mixture of the individual amino acids (lysine-isoleucine-asparatate-seriene) (assume these are the only...
A newly described fungal species has been isolated from the rumen of sheep. It is microscopic,...
A newly described fungal species has been isolated from the rumen of sheep. It is microscopic, unicellular, and produces spores that have a flagellum. This species will most likely be classified as an) Multiple Choice Glomerulomycete Microspordia 0 Basidiomycete 0 Chytridomycete Ascomycete Which of the following organisms produces the toxin associated with St. Anthony's Fire (ergotism)? Multiple Choice ANN O Stachybotrys chartarum * * . O Claviceps purpurea M O Aspergillus nidulans O Amanita phalloides
Hello! Can someone help me and solve these? Thank you! 4. The following mechanism has been...
Hello! Can someone help me and solve these? Thank you!
4. The following mechanism has been proposed for a reaction: Step 1 H2(g) + Step 2 O(g) + O2(g) H2(g) → O(g) H2O(g) + H2O(g) → (a) What is the equation for the overall reaction? (b) What are the expected rate laws for Step 1 and Step 2? Step 1 - Step 2 (c) What if any intermediates are there? (d) If step 1 is slow and step 2 is...
1) The reaction below proceeds via a multistep mechanism involving several intermediate structures en route to...
1) The reaction below proceeds via a multistep mechanism involving several intermediate structures en route to the final product. Some possible structures for the intermediates and product have been provided below. Decide which intermediates are involved in the reaction, and what the final product is, and place them in the correct order (e.g. A +B+C where C would be the final product isolated). (4 points) 1) NaOET, Eto OEt 2) NHACI, H20 Possible intermediates/products: Eto OET Eto OET Eto OET...
Note that once a compouhd has been synthesized in one process it can be used in...
Note that once a compouhd has been synthesized in one process it can be used in a different process if you reference where it was first made. 1. Using any reagents necessary, provide a stepwise synthesis for each of the following transformation 0? b. C. d.
Page Chp 14 28. This reaction has an equilibrium constant of K,- 22 x 10 at...
Page Chp 14 28. This reaction has an equilibrium constant of K,- 22 x 10 at 298 K 2COFg)CO(g)+CFA Calculate K, for each reaction and predict whether reactants or products will be favored at equilibrium. An equilibrium mixture of this reaction at a certain temperature has INH,J- 0.278 M and [H S]- 0.355 M. What is the value of the equilibrium constant (K) at this temperature? 66. Consider this reaction at equilibrium: 60. Consider the reaction Predict whether the reaction...
The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine. Cl2...
The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine. Cl2 ⇌ 2Cl (fast, reversible) Cl + CHCl3 → HCl + CCl3 (slow) Cl + CCl3 → CCl4 (fast) What rate law does this mechanism predict? (Choose from the list below and enter your answers in alphabetical order, e.g. ABC ). A)k G) [CHCl3]1/2 M) [CCl3]2 B) [Cl2] H) [CCl3]1/2 N) [HCl]2 C) [Cl] I) [HCl]1/2 O) [Cl2]2 D) [CHCl3] J) [Cl2]1/2 P) [Cl]2 E)...
All of 1 A certain channel has been isolated from a cell membrane, that allows cyanide...
All of 1
A certain channel has been isolated from a cell membrane, that allows cyanide (CN-) ions, but not nitrate (NO3) ions, to cross a phospholipid-bilayer membrane. a) Briefly, explain how the structure of the channel might allow the channel to discriminate between these two anions. HINT: You may find it helpful to consult the three-dimensional CPK representations in the on-line table of polyatomic ions. b) Which, if any, of the following ions would you expect to be able...
Integrated Problem 22.90 Incorrect. In the first asymmetric synthesis of (-)-(5,5)-homaline, a symmetric alkaloid isolated in the early 1970s, a key intermediate was compound 2 (Tetradhedron Lett. 2012, 53, 1119-1121). Provide the reagents for converting compound 1 into compound 2. Make the tertiary amine at first. 'N, Me HN Two steps .CO.Me co Me Ph Ph 1 2 Choose from the list of reagents: NH NH Hyo, Na ByCN b. HjO", NBH CN HO. NaBHCN H H HC CH d....
Question 31 with all the transformations
VSNa 938 CHAPTER 20 AMINES g with benzene or toluene, outline a sy nthesis of each of the following compounds using diazonium salts as intermediates. (You need not repeat syntheses carried out in earlier parts of this problem.) (o) CH3 (I) 1,3-Dibromo-2-iodobenzene a) p-Fluorotoluene он o-lodotoluene (c) p-Cresol (d) m-Dichlorobenzene (e) m-CeH4(CN)2 (f) m-Bromobenzonitrile (g) 1,3-Dibromo-5-nitrobenzene (h) 3,5-Dibromoaniline CH3 CN CH3 (n) CH3 4.5-Tribromophenol ) 3,4.5-Tribromobenzonitrile (k) 2,6-Dibromobenzoic acid 20.32 Write equations for simple...
A newly described fungal species has been isolated from the rumen of sheep. It is microscopic, unicellular, and produces spores that have a flagellum. This species will most likely be classified as an) Multiple Choice Glomerulomycete Microspordia 0 Basidiomycete 0 Chytridomycete Ascomycete Which of the following organisms produces the toxin associated with St. Anthony's Fire (ergotism)? Multiple Choice ANN O Stachybotrys chartarum * * . O Claviceps purpurea M O Aspergillus nidulans O Amanita phalloides
Hello! Can someone help me and solve these? Thank you!
4. The following mechanism has been proposed for a reaction: Step 1 H2(g) + Step 2 O(g) + O2(g) H2(g) → O(g) H2O(g) + H2O(g) → (a) What is the equation for the overall reaction? (b) What are the expected rate laws for Step 1 and Step 2? Step 1 - Step 2 (c) What if any intermediates are there? (d) If step 1 is slow and step 2 is...
1) The reaction below proceeds via a multistep mechanism involving several intermediate structures en route to the final product. Some possible structures for the intermediates and product have been provided below. Decide which intermediates are involved in the reaction, and what the final product is, and place them in the correct order (e.g. A +B+C where C would be the final product isolated). (4 points) 1) NaOET, Eto OEt 2) NHACI, H20 Possible intermediates/products: Eto OET Eto OET Eto OET...
Note that once a compouhd has been synthesized in one process it can be used in a different process if you reference where it was first made. 1. Using any reagents necessary, provide a stepwise synthesis for each of the following transformation 0? b. C. d.
Page Chp 14 28. This reaction has an equilibrium constant of K,- 22 x 10 at 298 K 2COFg)CO(g)+CFA Calculate K, for each reaction and predict whether reactants or products will be favored at equilibrium. An equilibrium mixture of this reaction at a certain temperature has INH,J- 0.278 M and [H S]- 0.355 M. What is the value of the equilibrium constant (K) at this temperature? 66. Consider this reaction at equilibrium: 60. Consider the reaction Predict whether the reaction...
All of 1
A certain channel has been isolated from a cell membrane, that allows cyanide (CN-) ions, but not nitrate (NO3) ions, to cross a phospholipid-bilayer membrane. a) Briefly, explain how the structure of the channel might allow the channel to discriminate between these two anions. HINT: You may find it helpful to consult the three-dimensional CPK representations in the on-line table of polyatomic ions. b) Which, if any, of the following ions would you expect to be able...
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