Homework Answers
Proposed mechanism for formation of compound 4
reaction proceed via Piner reaction
(2) Formation of Compound 2 and 3
Hydrogen atom added to cyano group and formed products as described in above route. Compound 3 is formed as byproduct due to partial hydrogenation
Reaction pathway.
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Hat is the structure of 3 and 4? Propose reasonable mechanisms for their formation. H2(50 psi), R...
Draw the structure Ç(CH3)3 0 1) PhČCI, AICI: 2) Et2NH, H2, Raney-Ni, heat CO2Me 1) EtMgBr...
Draw the structure
Ç(CH3)3 0 1) PhČCI, AICI: 2) Et2NH, H2, Raney-Ni, heat CO2Me 1) EtMgBr (2 equiv.) 2) H20, H30+
3) Propose a synthesis. Он 1) РСC 2) 3)acid work up 4)2 Ph NH 5) O3,...
3) Propose a synthesis. Он 1) РСC 2) 3)acid work up 4)2 Ph NH 5) O3, 6) DMS 7)? 8)? 9) H2/Ni
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction...
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction below: (draw curved arrows, intermediates, and resonance structures if necessary. NO NEED FOR TRANSITION STATES! CH CH CH CH Br Heat CH,CH,OH OCH.CH Mechanism.14 points) Mechanism 2 points) Mechanism.3 14 points) 5. [14 pts] Provide the major products of reacting the alkene shown in the middle of the scheme below with all the reagents independently. Draw the products' structures in the corresponding table below...
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3...
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3 pts) Propose two reasonable structures for a hydrocarbon having an exact mass of 122.1096 that forms 1-ethyl-1-methylcyclohexane upon hydrogenation with excess H2 and Pd-C. (2 pts) 3. 4. A low resolution mass spectrum of a neurotransmitter gave a molecular ion at m/z s 153. Three possible formulas for this molecular ion are Coth/N,O2. Cat,NO, and C,HnN,O. A high resolution mass spectrum provided a exact...
Page 4 Propose reasonable syntheses for the following compo compounds and using any other necessary organic intermed...
Page 4 Propose reasonable syntheses for the following compo compounds and using any other necessary organic intermediates formed to receive full credit. Assume separated. ng compounds beginning with the indicated organic or inorganic reagents. Show all sume any isomers formed can easily be [3% +6% marks] c. Provide any required reagents and give the stru following synthetic scheme. If more than one reaga steps. ve the structures of the intermediates in the one reagent is required, please number the Bra,...
Chapter 24- Catalytic Carbon-Carbon Bond Formation 35. What is the major organic product of the following sequence of reactions? H2 (3 atm) 1. LiAIH Pt 2 H30 CN NH2 NH2 CH2CN a. b. 2 C. 36. What is t...
Chapter 24- Catalytic Carbon-Carbon Bond Formation 35. What is the major organic product of the following sequence of reactions? H2 (3 atm) 1. LiAIH Pt 2 H30 CN NH2 NH2 CH2CN a. b. 2 C. 36. What is the major organic product of the following sequence of reactions? LiAIH4 1 2 eq. NaH A 2. H3o 2. 2 eq. Mel OCH3 OCH3 OCH3 OCH3 2 OCH3 OCH3 OCH3 OCH3 Chapter 24-Catalytic Carbon-Carbon Bond Formation 37. What is the major organic...
(c) Give the structure of 3, a mechanism for its formation, and an explanation of the...
(c) Give the structure of 3, a mechanism for its formation, and an explanation of the stereochemical outcome of the reaction. You must also state how many peaks you would expect in the 'H NMR spectrum of 3. You do not need to give the multiplicity of the peaks CH2Cl2 [4 MARKS] (d) Draw out a general reaction scheme that presents the different types of evidence that can be gathered to support the occurrence of neighbouring group participation. Critically evaluate...
Chem 2440 PS-7 Spring 2020 Due: March 31 4. (3 pt) Rank the below in order...
Chem 2440 PS-7 Spring 2020
Due: March 31
4. (3 pt) Rank the below in order of decreasing basicity (most basic first). NH2 NO2 A. i>ii > iii B. iiiiii C. ii >i > iii D. i>iii > ii VH 5. (3 pt) Which of the following can occur? Note: you may have to search for reductions of azides, imines and nitro groups. i RN Hz RNH2 Metal catalyst ii R NH H2 RNH2 Metal catalyst NO2 NH2 H2 Metal...
Organic chemistry mechanisms i need help with systheses questions 6,7,8,9 2-hydroxybenzoic (3 pts) 5. Provide an...
Organic chemistry mechanisms
i need help with systheses questions 6,7,8,9
2-hydroxybenzoic (3 pts) 5. Provide an appropriate structure for: 3,3-dimethylcyclobutanecarbonitrile. (4 pts each, unless otherwise noted, 12 pts total) 6-8. Syntheses: draw / provide the likely organic product(s) generated in each of the reactions (or reaction sequences) below. As appropriate, pay attention to regiospecificity (new bond formation and location in the product formed) and stereochemistry (direction in space of new bond(s) formed). Indicate ALL likely products: where one product does...
3. Propose a structure corresponding to the spectral data which are provided. CsH8N203. Put your final...
3. Propose a structure corresponding to the spectral data which are provided. CsH8N203. Put your final answer in the box. Hint: The proton at 10.3 ppm is NOT what you would suspect at that region. There are two coupling constants given for the triplets around 7-8 ppm because they are really distorted doublets of doublets. Explain your answer to receive full credit. Based on your answer you can assign a structure to problem 9 in Part I which is isomeric....
Draw the structure
Ç(CH3)3 0 1) PhČCI, AICI: 2) Et2NH, H2, Raney-Ni, heat CO2Me 1) EtMgBr (2 equiv.) 2) H20, H30+
3) Propose a synthesis. Он 1) РСC 2) 3)acid work up 4)2 Ph NH 5) O3, 6) DMS 7)? 8)? 9) H2/Ni
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction below: (draw curved arrows, intermediates, and resonance structures if necessary. NO NEED FOR TRANSITION STATES! CH CH CH CH Br Heat CH,CH,OH OCH.CH Mechanism.14 points) Mechanism 2 points) Mechanism.3 14 points) 5. [14 pts] Provide the major products of reacting the alkene shown in the middle of the scheme below with all the reagents independently. Draw the products' structures in the corresponding table below...
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3 pts) Propose two reasonable structures for a hydrocarbon having an exact mass of 122.1096 that forms 1-ethyl-1-methylcyclohexane upon hydrogenation with excess H2 and Pd-C. (2 pts) 3. 4. A low resolution mass spectrum of a neurotransmitter gave a molecular ion at m/z s 153. Three possible formulas for this molecular ion are Coth/N,O2. Cat,NO, and C,HnN,O. A high resolution mass spectrum provided a exact...
Page 4 Propose reasonable syntheses for the following compo compounds and using any other necessary organic intermediates formed to receive full credit. Assume separated. ng compounds beginning with the indicated organic or inorganic reagents. Show all sume any isomers formed can easily be [3% +6% marks] c. Provide any required reagents and give the stru following synthetic scheme. If more than one reaga steps. ve the structures of the intermediates in the one reagent is required, please number the Bra,...
Chapter 24- Catalytic Carbon-Carbon Bond Formation 35. What is the major organic product of the following sequence of reactions? H2 (3 atm) 1. LiAIH Pt 2 H30 CN NH2 NH2 CH2CN a. b. 2 C. 36. What is the major organic product of the following sequence of reactions? LiAIH4 1 2 eq. NaH A 2. H3o 2. 2 eq. Mel OCH3 OCH3 OCH3 OCH3 2 OCH3 OCH3 OCH3 OCH3 Chapter 24-Catalytic Carbon-Carbon Bond Formation 37. What is the major organic...
(c) Give the structure of 3, a mechanism for its formation, and an explanation of the stereochemical outcome of the reaction. You must also state how many peaks you would expect in the 'H NMR spectrum of 3. You do not need to give the multiplicity of the peaks CH2Cl2 [4 MARKS] (d) Draw out a general reaction scheme that presents the different types of evidence that can be gathered to support the occurrence of neighbouring group participation. Critically evaluate...
Chem 2440 PS-7 Spring 2020
Due: March 31
4. (3 pt) Rank the below in order of decreasing basicity (most basic first). NH2 NO2 A. i>ii > iii B. iiiiii C. ii >i > iii D. i>iii > ii VH 5. (3 pt) Which of the following can occur? Note: you may have to search for reductions of azides, imines and nitro groups. i RN Hz RNH2 Metal catalyst ii R NH H2 RNH2 Metal catalyst NO2 NH2 H2 Metal...
Organic chemistry mechanisms
i need help with systheses questions 6,7,8,9
2-hydroxybenzoic (3 pts) 5. Provide an appropriate structure for: 3,3-dimethylcyclobutanecarbonitrile. (4 pts each, unless otherwise noted, 12 pts total) 6-8. Syntheses: draw / provide the likely organic product(s) generated in each of the reactions (or reaction sequences) below. As appropriate, pay attention to regiospecificity (new bond formation and location in the product formed) and stereochemistry (direction in space of new bond(s) formed). Indicate ALL likely products: where one product does...
3. Propose a structure corresponding to the spectral data which are provided. CsH8N203. Put your final answer in the box. Hint: The proton at 10.3 ppm is NOT what you would suspect at that region. There are two coupling constants given for the triplets around 7-8 ppm because they are really distorted doublets of doublets. Explain your answer to receive full credit. Based on your answer you can assign a structure to problem 9 in Part I which is isomeric....
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