Concept explainers
(a)
Interpretation: The diene that has the larger heat of hydrogenation is to be identified.
Concept introduction: Diene is a hydrocarbon that contains two
Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two more carbon atoms.
The example that shows the basic difference between conjugated diene and isolated diene is shown below.
Figure 1
The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.
(b)
Interpretation: The diene that has the larger heat of hydrogenation is to be identified.
Concept introduction: Diene is a hydrocarbon that contains two
Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two more carbon atoms.
The example that shows the basic difference between conjugated diene and isolated diene is shown below.
Figure 1
The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.
Want to see the full answer?
Check out a sample textbook solutionChapter 16 Solutions
Organic Chemistry
- Draw the products formed when each diene is treated with one equivalent of HCI. a. b. d.arrow_forwardWhich undergoes electrophilic substitution on the ring most rapidly? a. b. CHO d. e.arrow_forwardProblem 13.28 What reagent is needed to convert (CH3)2CHCH₂ COCI to each compound? a. b. C. d. но Ho ГОНarrow_forward
- Draw the product of each Diels-Alder reaction and indicate the stereochemistry at all stereogenic centers. A a. b.arrow_forwardWhat diene and dienophiles are used to make the following compounds? of a. b.arrow_forwardRank the following in order of decreasing Diels-Alder reactivity. A B Carrow_forward
- Rank the following alkenes from most to least stable. A. В. С. D. B.arrow_forward25.38 Draw the product of each intramolecular cycloaddition. а. hv [2 + 2] b. A [4 + 2] OSIR3 с. A [6 + 4] d. hv [2 + 2] Rage 11arrow_forwardDraw the products of radical chlorination and bromination of each compound. For which compounds is a single constitutional isomer formed for both reactions? What must be true about the structure of a reactant for both reactions to form a single product? a. b. C. d. е.arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning