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(4 pts) Hydroboration of 1-methylcyclopentene (1) is regioselective; trans-2-methylcyclopentyl borane (2) is the major product. Draw...
D. (4 pts) Hydroboration of 1-methylcyclopentene (1) is regioselective, trans-2-methylcyclopentyl borane (2) is the major product....
D. (4 pts) Hydroboration of 1-methylcyclopentene (1) is regioselective, trans-2-methylcyclopentyl borane (2) is the major product. Draw two transition state structures for the hydroboration of 1 in the boxes provided that account for each alkyl borane 2 & 3. Use dotted lines (-----) to indicate partial bond formation and partial bond cleavage. Indicate partially positive and partially negative atoms with delta signs (+ & 6-). BH2 H 2 CH3 BH3 -CH3 H BH2 -V CH3 6 E. (4 pts) Two...
Question 20 7.33 pts Identify the major product resulting from the following reaction. 1) BH3-THE 2)...
Question 20 7.33 pts Identify the major product resulting from the following reaction. 1) BH3-THE 2) CH,CO,D CH3 c) D D сн. CH CH3 CH3 ОА OB oc OD Question 21 7.33 pts Which of the following compounds would you expect to be the MAJOR product under the reaction conditions shown? (adapted from Droblem 21 Question 21 7.33 pts Which of the following compounds would you expect to be the MAJOR product under the reaction conditions shown? (adapted from Problem...
for f - j draw structures pls help with #1 as well f) 4-methyl-2-pentene 9) trans-8-ethyl-3-undecen...
for f - j draw structures pls help with #1 as well
f) 4-methyl-2-pentene 9) trans-8-ethyl-3-undecen h) E-5-bromo-4-chloro-7,7-dimethyl-4-undecene i) Z-1,2-difluoro-cyclohexene i) 4-ethenylcyclohexano Predict the major organic product or products of each of the following reactions. a) (CH3),CHCH-CH: H2SO4 HO b) (CH3),CHCH-CH, 1. Hg(OAc), H20 2. NaBH4 1. BH-THF c) (CH3),CHCH-CH2 2. H,O, NaOH
1 2 References] Draw a structural formula for the alkene you would use to prepare the...
1
2
References] Draw a structural formula for the alkene you would use to prepare the alcohol shown by hydroboration/oxidation CH3 CH3CHCH2CH2OH . You do not have to consider stereochemistry. . You do not have to explicitly draw H atoms In cases where there is more than one answer, just draw one. An alkene having the molecular formula CsHis is treated sequentially with ozone (0:) and zinc/acetic acid to give the product/s shown. 0% Draw a structural formula for the...
What is answer of #6??? Lab Section: 0 2 Report: Hydroboration of 1-Methylcyclohexene Mechanism / GC...
What is answer of #6???
Lab Section: 0 2 Report: Hydroboration of 1-Methylcyclohexene Mechanism / GC Analysis / Calculations 1. After reviewing the GC and 'H NMR spectra, what is the major product of the reaction? a. BHS. THF, OH O a. BH3. THE OH + b. 3 H2O2 3 + 3 c. NaOH OH ОН racemic racemic major 2. Draw the complete curved arrow mechanism for the reaction to produce the major product, including both the hydroboration and oxidation...
Alkyne Draw the product of the reaction below. (References) 1. BH3. THE 2. H2O2, OH HO...
Alkyne Draw the product of the reaction below. (References) 1. BH3. THE 2. H2O2, OH HO 1 pt cholesterol 1 pt 1 pt • You do not have to consider stereochemistry • You do not have to explicitly draw H atoms. • Should you want to restart the exercise, the drop-down menu labeled starting points can be used to redraw the co- oooo-1 Memo NOV 5 55 PM [References] In the box below draw the organic product() expected when this...
[Re OCH3 OCH3 HBr The above reaction proceeds to yield only a single product. Draw the...
[Re OCH3 OCH3 HBr The above reaction proceeds to yield only a single product. Draw the structure(s) of the carbocation intermediate, including resonance contributors, to show why this is the case. . You do not have to consider stereochemistry . Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. . Separate resonance structures using the symbol from the drop-down menu. . . A (CH12; reacts with 1 molar equivalent of H2 over...
Draw the structure of the final product(s) of this series of reactions 1pt ernces 1 pt...
Draw the structure of the final product(s) of this series of reactions 1pt ernces 1 pt 1. Br 1 pt 2.3 equivalents of NaNH 3. mild acid 1 pt 4. BH 5. H202/ NaOH 1 pt 1 pt 1 pt Use the wedge/hash bond tools to indicate stereochemistry where it exists Include H atoms at chiral centers only If a group is achiral, do not use wedged or hashed bonds on it Draw organic species only. Do not include lone...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total)...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total) Which is NOT true of the aldol condensation? A. It accomplishes the formation of a new carbon-carbon bond B. The enolate is favored at equilibrium (assume NaOH as the base) C. The key step is the mechanism is attack of the enolate ion on a carbonyl carbon atom D. Dehydration of the aldol product is often observed and is irreversible. _Which sets of hydrogen...
D. (4 pts) Hydroboration of 1-methylcyclopentene (1) is regioselective, trans-2-methylcyclopentyl borane (2) is the major product. Draw two transition state structures for the hydroboration of 1 in the boxes provided that account for each alkyl borane 2 & 3. Use dotted lines (-----) to indicate partial bond formation and partial bond cleavage. Indicate partially positive and partially negative atoms with delta signs (+ & 6-). BH2 H 2 CH3 BH3 -CH3 H BH2 -V CH3 6 E. (4 pts) Two...
Question 20 7.33 pts Identify the major product resulting from the following reaction. 1) BH3-THE 2) CH,CO,D CH3 c) D D сн. CH CH3 CH3 ОА OB oc OD Question 21 7.33 pts Which of the following compounds would you expect to be the MAJOR product under the reaction conditions shown? (adapted from Droblem 21 Question 21 7.33 pts Which of the following compounds would you expect to be the MAJOR product under the reaction conditions shown? (adapted from Problem...
for f - j draw structures pls help with #1 as well
f) 4-methyl-2-pentene 9) trans-8-ethyl-3-undecen h) E-5-bromo-4-chloro-7,7-dimethyl-4-undecene i) Z-1,2-difluoro-cyclohexene i) 4-ethenylcyclohexano Predict the major organic product or products of each of the following reactions. a) (CH3),CHCH-CH: H2SO4 HO b) (CH3),CHCH-CH, 1. Hg(OAc), H20 2. NaBH4 1. BH-THF c) (CH3),CHCH-CH2 2. H,O, NaOH
1
2
References] Draw a structural formula for the alkene you would use to prepare the alcohol shown by hydroboration/oxidation CH3 CH3CHCH2CH2OH . You do not have to consider stereochemistry. . You do not have to explicitly draw H atoms In cases where there is more than one answer, just draw one. An alkene having the molecular formula CsHis is treated sequentially with ozone (0:) and zinc/acetic acid to give the product/s shown. 0% Draw a structural formula for the...
What is answer of #6???
Lab Section: 0 2 Report: Hydroboration of 1-Methylcyclohexene Mechanism / GC Analysis / Calculations 1. After reviewing the GC and 'H NMR spectra, what is the major product of the reaction? a. BHS. THF, OH O a. BH3. THE OH + b. 3 H2O2 3 + 3 c. NaOH OH ОН racemic racemic major 2. Draw the complete curved arrow mechanism for the reaction to produce the major product, including both the hydroboration and oxidation...
Alkyne Draw the product of the reaction below. (References) 1. BH3. THE 2. H2O2, OH HO 1 pt cholesterol 1 pt 1 pt • You do not have to consider stereochemistry • You do not have to explicitly draw H atoms. • Should you want to restart the exercise, the drop-down menu labeled starting points can be used to redraw the co- oooo-1 Memo NOV 5 55 PM [References] In the box below draw the organic product() expected when this...
[Re OCH3 OCH3 HBr The above reaction proceeds to yield only a single product. Draw the structure(s) of the carbocation intermediate, including resonance contributors, to show why this is the case. . You do not have to consider stereochemistry . Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. . Separate resonance structures using the symbol from the drop-down menu. . . A (CH12; reacts with 1 molar equivalent of H2 over...
Draw the structure of the final product(s) of this series of reactions 1pt ernces 1 pt 1. Br 1 pt 2.3 equivalents of NaNH 3. mild acid 1 pt 4. BH 5. H202/ NaOH 1 pt 1 pt 1 pt Use the wedge/hash bond tools to indicate stereochemistry where it exists Include H atoms at chiral centers only If a group is achiral, do not use wedged or hashed bonds on it Draw organic species only. Do not include lone...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total) Which is NOT true of the aldol condensation? A. It accomplishes the formation of a new carbon-carbon bond B. The enolate is favored at equilibrium (assume NaOH as the base) C. The key step is the mechanism is attack of the enolate ion on a carbonyl carbon atom D. Dehydration of the aldol product is often observed and is irreversible. _Which sets of hydrogen...
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