mechanism of (trans)-(1S, 2S) -2-méthylcyclohexan-1-ol with Br-
a) When the (trans) - (1S, 2S) -2-methylcyclohexan-1-ol is placed in the presence of hydrobromic acid diluted in water at room temperature, the substrate undergoes a substitution reaction. The speed of the reaction only depends on the concentration of the substrate. The optical activity of the substitution result deflects polarized light. Suggest a reaction mechanism which is consistent with the information provided and which clearly shows the spatial configuration (3D mechanism) of the starting substrate and that of the products. Justify the choice of your mechanism. Name the products formed and identify their isomeric relationship. b) When the products obtained in A are heated in the presence of sodium tert-butanoate, only one of the products obtained in A undergoes an elimination reaction. In this case, the speed depends on the concentration of the substrate and this substrate. The reaction leads to only one product. Propose a reaction mechanism which is consistent with the information provided and which clearly shows the spatial configuration (3D mechanism) of the starting substrate and that of the products. Justify the choice of your mechanism and explain why only one of the previously obtained products reacts. Name the product formed.
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1. Suggest a reasonable mechanism for the following reaction mage. i.EtON, EtOH, 25°C ii. Hz0 Answer:...
1. Suggest a reasonable mechanism for the following reaction mage. i.EtON, EtOH, 25°C ii. Hz0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale. Answer:
1. Suggest a reasonable mechanism for the following reaction. na za i.EtON, EtOH, 25°C ii. H30...
1. Suggest a reasonable mechanism for the following reaction. na za i.EtON, EtOH, 25°C ii. H30 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale Answer:
1. Suggest a reasonable mechanism for the following reaction. nagogo i.EtON, EtOH, 25°C ii. H,0 Answer:...
1. Suggest a reasonable mechanism for the following reaction. nagogo i.EtON, EtOH, 25°C ii. H,0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale Answer:
Help Show the complete mechanism for the reaction of trans-2-butene with Br using curved arrows to...
Help
Show the complete mechanism for the reaction of trans-2-butene with Br using curved arrows to represent every bond broken and every bond formed Pay careful attention to the stereochemistry, using dashes and wedges to draw the reactant, intermediate, and product. Name the product or products. Be sure to include the stereochemical configuration of the product(s) if necessary. Part 4. Synthesis (5 points each). Show a reasonable synthetic pathway for the following transformations, 1. Acetylene - 1,2-butanediol 2. cis-2-butene-trans-2-butene
Review - Part A Draw a mechanism for this reaction Interactive 3D display mode HỰC – –H NH HC- Edit the reactio...
Review - Part A Draw a mechanism for this reaction Interactive 3D display mode HỰC – –H NH HC- Edit the reaction by drawing all steps in the appropriate boxes and connecting them with reaction arrows. Add charges where needed. Electron flow arrows should start on an atom or ab atom, bond, or location where a new bond should be created. DOCH OO Hydration of alkynes gives good yields of single compounds only with symmetrical or terminal alkynes. Draw the...
5. The following substitution reaction was carried out using either cis-1-bromo-3-ethylcyclohexane or trans-1-bromo-3-ethyl cyclohexane. Explain the...
5. The following substitution reaction was carried out using either cis-1-bromo-3-ethylcyclohexane or trans-1-bromo-3-ethyl cyclohexane. Explain the observations using the mechanism for this reaction and displaying the species (starting material, products, etc) in the chair conformation. Br Bu N+ Br- CH,CH, ether CH,CH, Minor CH,CH, Major a)the same mixture is obtained from either starting material Note that for the cis- example not much of it reacts. For the trans-example most of it is transformed into the cis. Bu N+ Br- b)...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
Show lone pairs on all appropriate atoms and the proper flow of electrons. (1) Mechanism #1:...
Show lone pairs on all appropriate atoms and the proper flow of electrons. (1) Mechanism #1: • Predict the products of the following reaction under different temperature conditions. • Show the mechanism for how the two products are formed at different temperatures (include resonance structures if appropriate). • Label the kinetic product and the thermodynamic product. (5 points) -80 °C + HBr 40 °C (2) Predict the product and show the complete mechanism for the following reaction. • Make sure...
complete #1 and #2 and please explain! Nucleophilic Substitutions: Competing Nucleophiles Dry Lab Name When an...
complete #1 and #2 and please explain!
Nucleophilic Substitutions: Competing Nucleophiles Dry Lab Name When an alcohol (substrate) is placed in an excess equimolar amounts of chloride ions and bromide ions in acid media the corresponding alkyl halides are obtained. The ratio of the alkyl halides depends on several factors: the nature of the substrate, the reaction conditions, the solvent and the mechanism of the reaction. (Refer to your lab textbook, see syllabus schedule) When fert-butanol (density 20 °C-0.7858 g/mL)...
Please help substitution mechanisms 1.) 2.) Question 14 Not complete Marked out of 1.00 Determine the...
Please help substitution mechanisms
1.)
2.)
Question 14 Not complete Marked out of 1.00 Determine the mechanism of the following substitution reaction and then draw the product(s). Which of the following statements is not true about the mechanism and/or products? Flag question CI LiCN Select one: a. The product is optically active. b. All of these statements are true. O Oc. A proton transfer step is not involved in the mechanism. d. A carbocation intermediate is in the mechanism. o...
1. Suggest a reasonable mechanism for the following reaction mage. i.EtON, EtOH, 25°C ii. Hz0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale. Answer:
1. Suggest a reasonable mechanism for the following reaction. na za i.EtON, EtOH, 25°C ii. H30 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale Answer:
1. Suggest a reasonable mechanism for the following reaction. nagogo i.EtON, EtOH, 25°C ii. H,0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale Answer:
Help
Show the complete mechanism for the reaction of trans-2-butene with Br using curved arrows to represent every bond broken and every bond formed Pay careful attention to the stereochemistry, using dashes and wedges to draw the reactant, intermediate, and product. Name the product or products. Be sure to include the stereochemical configuration of the product(s) if necessary. Part 4. Synthesis (5 points each). Show a reasonable synthetic pathway for the following transformations, 1. Acetylene - 1,2-butanediol 2. cis-2-butene-trans-2-butene
Review - Part A Draw a mechanism for this reaction Interactive 3D display mode HỰC – –H NH HC- Edit the reaction by drawing all steps in the appropriate boxes and connecting them with reaction arrows. Add charges where needed. Electron flow arrows should start on an atom or ab atom, bond, or location where a new bond should be created. DOCH OO Hydration of alkynes gives good yields of single compounds only with symmetrical or terminal alkynes. Draw the...
5. The following substitution reaction was carried out using either cis-1-bromo-3-ethylcyclohexane or trans-1-bromo-3-ethyl cyclohexane. Explain the observations using the mechanism for this reaction and displaying the species (starting material, products, etc) in the chair conformation. Br Bu N+ Br- CH,CH, ether CH,CH, Minor CH,CH, Major a)the same mixture is obtained from either starting material Note that for the cis- example not much of it reacts. For the trans-example most of it is transformed into the cis. Bu N+ Br- b)...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
Show lone pairs on all appropriate atoms and the proper flow of electrons. (1) Mechanism #1: • Predict the products of the following reaction under different temperature conditions. • Show the mechanism for how the two products are formed at different temperatures (include resonance structures if appropriate). • Label the kinetic product and the thermodynamic product. (5 points) -80 °C + HBr 40 °C (2) Predict the product and show the complete mechanism for the following reaction. • Make sure...
complete #1 and #2 and please explain!
Nucleophilic Substitutions: Competing Nucleophiles Dry Lab Name When an alcohol (substrate) is placed in an excess equimolar amounts of chloride ions and bromide ions in acid media the corresponding alkyl halides are obtained. The ratio of the alkyl halides depends on several factors: the nature of the substrate, the reaction conditions, the solvent and the mechanism of the reaction. (Refer to your lab textbook, see syllabus schedule) When fert-butanol (density 20 °C-0.7858 g/mL)...
Please help substitution mechanisms
1.)
2.)
Question 14 Not complete Marked out of 1.00 Determine the mechanism of the following substitution reaction and then draw the product(s). Which of the following statements is not true about the mechanism and/or products? Flag question CI LiCN Select one: a. The product is optically active. b. All of these statements are true. O Oc. A proton transfer step is not involved in the mechanism. d. A carbocation intermediate is in the mechanism. o...
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