If one of the three groups on 2-(tert-butyl)-4-ethyl-N-methylcyclohexanamine must be on the opposite face of the...
If one of the three groups on 2-(tert-butyl)-4-ethyl-N-methylcyclohexanamine must be on the opposite face of the other two, determine the lowest energy stereoisomers, draw them in their lowest energy conformation and name them with stereochemistry.
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If one of the three groups on
2-(tert-butyl)-4-ethyl-N-methylcyclohexanamine must be on the
opposite face of the...
5) a) Because of the presence of three very bulky tert-butyl groups (t-Bu) both coumpounds 1...
5) a) Because of the presence of three very bulky tert-butyl groups (t-Bu) both coumpounds 1 and 2 exist as a single conformer. Draw the only existing conformer for 1 and 2 Br OH t-Bu **74-Bu t-Bu 1 OH -Bu Bu b) Which of these two isomers 10 2 leads to the formation of an epoxide when reacted with NaOH ? Draw the structure of the resulting epoxide 3 showing the stereochemistry. NaOH
Question 1.) Which of the following describes the most stable conformation of trans-1-tert-butyl-3-methylcyclohexane? a.) Both groups...
Question 1.) Which of the following describes the most stable conformation of trans-1-tert-butyl-3-methylcyclohexane? a.) Both groups are equatorial. b.) Both groups are axial. c.) none of these d.) The tert-butyl group is axial and the methyl group is equatorial. e.) The tert-butyl group is equatorial. Question 2.) Alkanes with one to four carbons exists as gases at room temperature. a.) True b.) False Question 3.) How many monochlorination products would be obtained from the chlorination of pentane a.) 1 b.)...
29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl...
29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl C) Isopropyl D) Isobutyl 30) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the highest boiling point first. A) II > III >I C D B) I > III >II ) IIT >II> I ) I>II> III 31) - 31) Which of the following statements about the conformations of acyclic alkanes is true? A) A staggered conformation with...
A molecule was incorrectly named 3-n-butyl-5-ethyl-4-isopropylhexane. The correct name would be: OA) 1-sec-butyl-2-ethyl-1-isopropylhexane O B) 3-sec-butyl-4-ethyl-2-methyl-octane...
A molecule was incorrectly named 3-n-butyl-5-ethyl-4-isopropylhexane. The correct name would be: OA) 1-sec-butyl-2-ethyl-1-isopropylhexane O B) 3-sec-butyl-4-ethyl-2-methyl-octane OC) 6-isopropyl-5-diethyl-7-methylnonane O D) 5-ethyl-4-isopropyl-3-methylnonane OE) 4-n-butyl-2,2-diethyl-3-isopropylhexane
7. (13 points) For the compound 1-tert-butyl-4-methylcyclohexane: a. Draw the two possible chair conformations for the...
7. (13 points) For the compound 1-tert-butyl-4-methylcyclohexane: a. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one b. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one trans: C. Between the two more stable isomers circled above, which is more stable? Why?
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether,...
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether, (CH)1COCH CH, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? A) The rate remains the same. B) The rate decreases by a factor of 2 C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. Circle the following alkyl halide that will undergo the fastest...
sodium borohydide reduction of 4 tert butylcyclohexanone. need help confirming top answers are correct and help...
sodium borohydide reduction of 4 tert
butylcyclohexanone. need help confirming top answers are correct
and help with lower section. thanks
& Draw your two products (each in the most stable chair conformation) below using the numbering provided. Show only the -OH and tert-butyl groups on the ring. a) label each group as equatorial (eq) or axial (ax). b) label each group as top face (top) or bottom face (bot). OH (ax, top) (ax, bot) .OH (Eq, top 7 (Er, top...
H5.31 - Level 2 Consider the most stable chair conformation of all cis-4-tert-butyl-1,2-dimethylcyclohexane (all substituents are...
H5.31 - Level 2 Consider the most stable chair conformation of all cis-4-tert-butyl-1,2-dimethylcyclohexane (all substituents are cis on the molecule). What is the bond angle between the two methyl groups when looking down the C1-C2 bond? A 45˚ B 60˚ C 109.5˚ D 120˚ E 180˚
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest...
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest boiling point? (a) 3-methylpentane (b) 2-methylpentane (c) hexane (d) 2,2-dimethylbutane 4. A CH3 In the lowest energy conformation of the compound to the right, how many alkyl substituents are axial? (a) 0 (c) 2 (b) 1 (d) 3 (CH),CHWV CH.CH 5. Identify the correct IUPAC name for the structure shown below. (a) 1-tert-butyl-2-chloro-5-bromocyclooctane (b) 5-bromo-1-tert-butyl-2-chlorocyclooctane (c) 1-bromo-4-chloro-5-tert-butylcyclooctane (d) 1-bromo-4-tert-butyl-5-chlorocyclooctane (e) 1-tert-butyl-4-bromo-7-chlorocyclooctane 6. Which of...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also 1) contain? A) 2n +2 C) n -2 D) n+2 E) 2n 2) Identify the number of tertiary carbons in the following structure 2) A) 3 C) 5 D) 6 E) 2 3) Give the IUPAC name for the following structure 3) A) 2-methyl-3-ethylheptane B) 2-methyl-3-propylheptane C) 3-ethyl-2-methylheptane...
5) a) Because of the presence of three very bulky tert-butyl groups (t-Bu) both coumpounds 1 and 2 exist as a single conformer. Draw the only existing conformer for 1 and 2 Br OH t-Bu **74-Bu t-Bu 1 OH -Bu Bu b) Which of these two isomers 10 2 leads to the formation of an epoxide when reacted with NaOH ? Draw the structure of the resulting epoxide 3 showing the stereochemistry. NaOH
29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl C) Isopropyl D) Isobutyl 30) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the highest boiling point first. A) II > III >I C D B) I > III >II ) IIT >II> I ) I>II> III 31) - 31) Which of the following statements about the conformations of acyclic alkanes is true? A) A staggered conformation with...
A molecule was incorrectly named 3-n-butyl-5-ethyl-4-isopropylhexane. The correct name would be: OA) 1-sec-butyl-2-ethyl-1-isopropylhexane O B) 3-sec-butyl-4-ethyl-2-methyl-octane OC) 6-isopropyl-5-diethyl-7-methylnonane O D) 5-ethyl-4-isopropyl-3-methylnonane OE) 4-n-butyl-2,2-diethyl-3-isopropylhexane
7. (13 points) For the compound 1-tert-butyl-4-methylcyclohexane: a. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one b. Draw the two possible chair conformations for the cis isomer, Which conformation, if either, is more stable? Circle one trans: C. Between the two more stable isomers circled above, which is more stable? Why?
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether, (CH)1COCH CH, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? A) The rate remains the same. B) The rate decreases by a factor of 2 C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. Circle the following alkyl halide that will undergo the fastest...
sodium borohydide reduction of 4 tert
butylcyclohexanone. need help confirming top answers are correct
and help with lower section. thanks
& Draw your two products (each in the most stable chair conformation) below using the numbering provided. Show only the -OH and tert-butyl groups on the ring. a) label each group as equatorial (eq) or axial (ax). b) label each group as top face (top) or bottom face (bot). OH (ax, top) (ax, bot) .OH (Eq, top 7 (Er, top...
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest boiling point? (a) 3-methylpentane (b) 2-methylpentane (c) hexane (d) 2,2-dimethylbutane 4. A CH3 In the lowest energy conformation of the compound to the right, how many alkyl substituents are axial? (a) 0 (c) 2 (b) 1 (d) 3 (CH),CHWV CH.CH 5. Identify the correct IUPAC name for the structure shown below. (a) 1-tert-butyl-2-chloro-5-bromocyclooctane (b) 5-bromo-1-tert-butyl-2-chlorocyclooctane (c) 1-bromo-4-chloro-5-tert-butylcyclooctane (d) 1-bromo-4-tert-butyl-5-chlorocyclooctane (e) 1-tert-butyl-4-bromo-7-chlorocyclooctane 6. Which of...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also 1) contain? A) 2n +2 C) n -2 D) n+2 E) 2n 2) Identify the number of tertiary carbons in the following structure 2) A) 3 C) 5 D) 6 E) 2 3) Give the IUPAC name for the following structure 3) A) 2-methyl-3-ethylheptane B) 2-methyl-3-propylheptane C) 3-ethyl-2-methylheptane...
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