Concept explainers
(a)
Interpretation: The class of given cycloocta-1,4-diene as isolated, conjugated, cumulated, or a combination is to be stated.
Concept introduction: Conjugated systems have alternate single and double bonds that results in lower the energy and increase the stability of a molecule. Isolated dienes or polyenes are the compounds that comprise double bonds at the large distances separated by more than one single bond, whereas cumulated dienes or polyenes are the compounds that do not possess any single bond in between the two double bonds.
(a)
Answer to Problem 15.24SP
The given compound is classified as isolated diene.
Explanation of Solution
The structure of given diene is shown in figure 1.
Figure 1
It is conferred from the above structure of
(b)
Interpretation: The class of given cycloocta-1,3-diene as isolated, conjugated, cumulated, or a combination is to be stated.
Concept introduction: Conjugated systems have alternate single and double bonds that results in lower the energy and increase the stability of a molecule. Isolated dienes or polyenes are the compounds that comprise double bonds at the large distances separated by more than one single bond, whereas cumulated dienes or polyenes are the compounds that do not possess any single bond in between the two double bonds.
(b)
Answer to Problem 15.24SP
The given compound is classified as conjugated diene.
Explanation of Solution
The structure of given diene is shown in figure 2.
Figure 2
It is conferred from the above structure of
(c)
Interpretation: The class of given cycloocta-1,2-diene as isolated, conjugated, cumulated, or a combination is to be stated.
Concept introduction: Conjugated systems have alternate single and double bonds that results in lower the energy and increase the stability of a molecule. Isolated dienes or polyenes are the compounds that comprise double bonds at the large distances separated by more than one single bond, whereas cumulated dienes or polyenes are the compounds that do not possess any single bond in between the two double bonds.
(c)
Answer to Problem 15.24SP
The given compound is classified as cumulated diene.
Explanation of Solution
The structure of given diene is shown in figure 3.
Figure 3
It is conferred from the above structure of
(d)
Interpretation: The class of given cycloocta-1,2,5,7-tetraene as isolated, conjugated, cumulated, or a combination is to be stated.
Concept introduction: Conjugated systems have alternate single and double bonds that results in lower the energy and increase the stability of a molecule. Isolated dienes or polyenes are the compounds that comprise double bonds at the large distances separated by more than one single bond, whereas cumulated dienes or polyenes are the compounds that do not possess any single bond in between the two double bonds.
(d)
Answer to Problem 15.24SP
The given compound is classified as conjugated polyene.
Explanation of Solution
The structure of given polyene is shown in figure 4.
Figure 4
It is conferred from the above structure of
(e)
Interpretation: The class of given cyclohexa-1,3,5-triene as isolated, conjugated, cumulated, or a combination is to be stated.
Concept introduction: Conjugated systems have alternate single and double bonds that results in lower the energy and increase the stability of a molecule. Isolated dienes or polyenes are the compounds that comprise double bonds at the large distances separated by more than one single bond, whereas cumulated dienes or polyenes are the compounds that do not possess any single bond in between the two double bonds.
(e)
Answer to Problem 15.24SP
The given compound is classified as conjugated polyene.
Explanation of Solution
The structure of the given polyene is shown in figure 5.
Figure 5
It is conferred from the above structure of
(f)
Interpretation: The class of given penta-1,2-4-triene as isolated, conjugated, cumulated, or a combination is to be stated.
Concept introduction: Conjugated systems have alternate single and double bonds that results in lower the energy and increase the stability of a molecule. Isolated dienes or polyenes are the compounds that comprise double bonds at the large distances separated by more than one single bond, whereas cumulated dienes or polyenes are the compounds that do not possess any single bond in between the two double bonds.
(f)
Answer to Problem 15.24SP
The given compound is classified as cumulated and conjugated polyene.
Explanation of Solution
The structure of given polyene is shown in figure 6.
Figure 6
It is conferred from the above structure of
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Chapter 15 Solutions
Organic Chemistry (9th Edition)
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- O A. 1,1-dimethyl-1,4-pentadiene B. 2-methyl-2,5-hexadiene OC.5,5-dimethyl-1,4-pentadiene O D.5-methyl-1,4-hexadienearrow_forwardDraw the skeletal structures for the compounds in a. (Z)-1,3,5-tribromo-2-pentene b. (Z)-3-methyl-2-heptenec. (E)-1,2-dibromo-3-isopropyl-2-hexene d. vinyl bromidee. 1,2-dimethylcyclopentene f. diallylaminearrow_forwardDraw the structures for penta-1,4-diene and cyclopenta-1,3-diene.arrow_forward
- Draw structures corresponding to the following IUPAC names: a. 2-methylhexa-1,5-diene b. 3,4-diisopropy;-2,5-dimethyl-3-hexene c. 3-ethyl-2,2-dimethylhept-3-ene d. (4E)-2,4-dimethyl-1,4-hexadiene e. 2,3,3-trimethylocta-1,4,6-triene f. (3E,5Z)-2,6-dimethyl-1,3,5,7- octatetraenearrow_forwardReagents a. C6H5CHO b. NaOH, ethanol h. BrCH2CH=CH2 i. Na* OEt, ethanol j. Br2, H* k. K* t-BuO c. Pyrrolidine, cat. H* d. H2C=CHCN e. H3O* f. I. CH2(CO2ET)2 -CH2CH2CN LDA m. heat g. ELOC(=0)CO2ET Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda).arrow_forwardDescribe (meaning what you would do and observe) simple (not including melting points, boiling points, cleaving reactions, or instrumental analyses) chemical tests(if any) that would distinguish between the compounds named below. [hint doing a table may be helpful] A. 1,3-pentadiene and 1-pentyne B. Ally bromide and 2,3- dimethyl-1,3-butadienearrow_forward
- Which of the following molecules is antiaromatic? A. cycloheptatrieneB. Cyclopentadienyl cationC. cyclopentadienyl anionD. cycloheptatrienyl cationE. silopentadienearrow_forward9. The catalyst used for vinyl chloride production from ethylene is: a. FeCl, b. Ethylene dibromide c. HPO. d. Both (a) or (b) 10. LPG is mainly used for production of a- Ethylene. c-Butadiene. b- Propylene. d- All of these.arrow_forwardShow how to convert 1- Butene into these compounds. a. Butane b. 2- Butanol c. 2- Bromobutane d. 1,2- Dibromobutanearrow_forward
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