Homework Answers
Addition of Br2 to trans alkene by Electrophilic Addition mechanism gives meso Compound.
Lindlars catalyst reduces the alkyne into cis Alkene.
Na/Liq. NH3, convert the alkyne into trans alkene.
OsO4 is a selective syn digydroxylation reagent.
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Show the complete mechanism for the reaction of trans-2-butene with Br using curved arrows to...
Please help with both questions Part 3. Mechanism (10 pts) 18. Draw the complete mechanism for...
Please help with both questions
Part 3. Mechanism (10 pts) 18. Draw the complete mechanism for the following reaction, using curved arrows to indicate every bond broken and every bond formed -OCH.CH 6. Starting with ethane, form trans-2-butene Tubuk Na NH
Please need help on QUESTION 4 Show step by step in the synthesis of trans-2-butene from...
Please need help on QUESTION 4
Show step by step in the synthesis of trans-2-butene from acetylene and an alkyl halide. Convert cis-3-hexene to trans-3-hexene. Calculate % yields of 1 -chloropropane and 2-chloroprpane from monochlorination of propane. Refer to the reaction, cyclohexene + NBS rightarrow 3-bromocyclohene, in Fig. 10-2 (p. 293). Write the propagation in three separate steps.
(a) Draw a stepwise, detailed mechanism for the following reaction. Used curved arrows to show the...
(a) Draw a stepwise, detailed mechanism for the following reaction. Used curved arrows to show the movement of electrons. Br CN NaCN DMF NaBr (b) Assign the configuration (Ror S) of the chiral centre in the substrate and product (c) List the bonds broken and formed in this reaction (d) Assume that this is an endothermic reaction. Draw an energy diagram for this reaction. Label the axes, reactants, products, E, and AH. Draw the structure for both transition states.
Multistep reaction mechanisms Group Activity Treating (S)-2-butanol with HBr results in the following two step reaction: Step 1: CH3CH(OH)CH2CH3 + HBr ⇌ CH3CH(OH2)CH2CH3+ + Br- Step 2: CH3CH(OH2)CH2CH3+ + Br- ⇌ CH3CH(Br)CH2CH3 + H2O Draw a mechanism for e
Multistep reaction mechanisms Group ActivityTreating (S)-2-butanol with HBr results in the following two step reaction: Step 1: CH3CH(OH)CH2CH3 + HBr ⇌ CH3CH(OH2)CH2CH3+ + Br-Step 2: CH3CH(OH2)CH2CH3+ + Br- ⇌ CH3CH(Br)CH2CH3 + H2ODraw a mechanism for each step. Draw structures for all reactants and products, including correct stereochemistry (wedges and dashes). Show all the curved arrows in each step, and label each curved arrow according to whether it represents proton transfer, loss of a leaving group, nucleophilic attack, or carbocation rearrangement.
6) Draw the structure of (Z)-1-chloro-2-methyl-2-butene. 7) Draw the curved arrows to show how CH3CH=CHCH2CH3 reacts...
6) Draw the structure of (Z)-1-chloro-2-methyl-2-butene. 7) Draw the curved arrows to show how CH3CH=CHCH2CH3 reacts with HBr to form a carbocation first, and then forms 2-bromopentane. (this is 2 steps) 7) 8) 8) Predict the product(s) of the following reaction based on the curved arrows: Make sure to include + and- charges where appropriate. -C-NH2 CH CHy HO 9) Based on the following reaction coordinate diagram: Which compound, A or C, is formed faster from B? Which is more...
b Write a mechanism for the reaction using curved arrows to show electron reorganization. Consult the arrow-pushing ins...
b Write a mechanism for the reaction using curved arrows to show electron reorganization. Consult the arrow-pushing instructions for the convention on regiospecific electrophilic attack on a double bond. Arrow-pushing Instructions inox tv no H- B Draw the organic product of the following reaction. CH3 meta-Chloroperoxy- benzoic acid • You do not have to consider stereochemistry. • Indicate regiochemistry when relevant. • The aromatic ring, when present, is unreactive in all cases. • Do not draw organic or inorganic by-products....
2. Provide the complete mechanism (curved arrows) to show how the product is formed. Include all...
2. Provide the complete mechanism (curved arrows) to show how the product is formed. Include all lone pairs, formal charges, curved arrows, intermediates, and products. You do not need to draw the structures of transition states. If there is a carbocation rearrangement and/or a proton transfer, be sure to include it (them) in your mechanism. (Remember to start by drawing all ionic compounds as ions/drawing out the structure of all reagents, and drawing in all lone pairs.) HCI 3. Which...
2. Complete the following propagation steps. Add all lone pairs, show curved arrows and give the ...
2. Complete the following propagation steps. Add all lone pairs, show curved arrows and give the product(s). Notice how the pattern of the arrow is the same. Br CH3 c. HC H CI Which is more energetically favorable, example 2. c. or 2. d. above? d s more favorable bccase bond List all intermediates shown in #2.
2. Complete the following propagation steps. Add all lone pairs, show curved arrows and give the product(s). Notice how the pattern of the...
2) (2 pts sch) Show the step-by-step mechanism, using curved arrows to show all electron movement...
2) (2 pts sch) Show the step-by-step mechanism, using curved arrows to show all electron movement for the conversion of the substrate to each of the three products using methanol. The mechanism for each product should be clearly shown in the space provided HOCH
Complete each proton transfer reaction using curved arrows to show electron movement. Use pKavalues (or approximate ones,...
Complete each proton transfer reaction using curved arrows to show electron movement. Use pKavalues (or approximate ones, from notes or textbook) to determine whether the reaction is reactant or product favored. Give an approximate equilibrium constant for the reaction (like 105or 10-16, etc.). i.hydroxide ion with phenol. ii.CH3OH (methanol) with sulfuric acid iii.Aniline (PhNH2) with HCl. iv.NaNH2with ethanol. v.Hydride ion with 1-butyne vi.Phenol (acid) with water (base) vii.Phenoxide (PhO-) ion with water viii.Acetone with NaOH
Please help with both questions
Part 3. Mechanism (10 pts) 18. Draw the complete mechanism for the following reaction, using curved arrows to indicate every bond broken and every bond formed -OCH.CH 6. Starting with ethane, form trans-2-butene Tubuk Na NH
Please need help on QUESTION 4
Show step by step in the synthesis of trans-2-butene from acetylene and an alkyl halide. Convert cis-3-hexene to trans-3-hexene. Calculate % yields of 1 -chloropropane and 2-chloroprpane from monochlorination of propane. Refer to the reaction, cyclohexene + NBS rightarrow 3-bromocyclohene, in Fig. 10-2 (p. 293). Write the propagation in three separate steps.
(a) Draw a stepwise, detailed mechanism for the following reaction. Used curved arrows to show the movement of electrons. Br CN NaCN DMF NaBr (b) Assign the configuration (Ror S) of the chiral centre in the substrate and product (c) List the bonds broken and formed in this reaction (d) Assume that this is an endothermic reaction. Draw an energy diagram for this reaction. Label the axes, reactants, products, E, and AH. Draw the structure for both transition states.
6) Draw the structure of (Z)-1-chloro-2-methyl-2-butene. 7) Draw the curved arrows to show how CH3CH=CHCH2CH3 reacts with HBr to form a carbocation first, and then forms 2-bromopentane. (this is 2 steps) 7) 8) 8) Predict the product(s) of the following reaction based on the curved arrows: Make sure to include + and- charges where appropriate. -C-NH2 CH CHy HO 9) Based on the following reaction coordinate diagram: Which compound, A or C, is formed faster from B? Which is more...
b Write a mechanism for the reaction using curved arrows to show electron reorganization. Consult the arrow-pushing instructions for the convention on regiospecific electrophilic attack on a double bond. Arrow-pushing Instructions inox tv no H- B Draw the organic product of the following reaction. CH3 meta-Chloroperoxy- benzoic acid • You do not have to consider stereochemistry. • Indicate regiochemistry when relevant. • The aromatic ring, when present, is unreactive in all cases. • Do not draw organic or inorganic by-products....
2. Provide the complete mechanism (curved arrows) to show how the product is formed. Include all lone pairs, formal charges, curved arrows, intermediates, and products. You do not need to draw the structures of transition states. If there is a carbocation rearrangement and/or a proton transfer, be sure to include it (them) in your mechanism. (Remember to start by drawing all ionic compounds as ions/drawing out the structure of all reagents, and drawing in all lone pairs.) HCI 3. Which...
2. Complete the following propagation steps. Add all lone pairs, show curved arrows and give the product(s). Notice how the pattern of the arrow is the same. Br CH3 c. HC H CI Which is more energetically favorable, example 2. c. or 2. d. above? d s more favorable bccase bond List all intermediates shown in #2.
2. Complete the following propagation steps. Add all lone pairs, show curved arrows and give the product(s). Notice how the pattern of the...
2) (2 pts sch) Show the step-by-step mechanism, using curved arrows to show all electron movement for the conversion of the substrate to each of the three products using methanol. The mechanism for each product should be clearly shown in the space provided HOCH
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