α-Terpinene, C10H16, is a pleasant-smelling hydrocarbon that has been isolated from oil of marjoram. On hydrogenation over a palladium catalyst, α-terpinene reacts with 2 molar equivalents of H2 to yield a hydrocarbon, C10H20. On ozonolysis, followed by reduction with zinc and acetic acid, α-terpinene yields two products, glyoxal and 6-methyl-2,5- heptanedione.   (a) How many degrees of unsaturation does a-terpinene have?   (b) How many double bonds and how many rings does it have?   (c) Propose a structure for a-terpinene

Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter6: Reactions Of Alkenes
Section: Chapter Questions
Problem 6.31P: When 2-pentene is treated with Cl2 in methanol, three products are formed. Account for the formation...
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α-Terpinene, C10H16, is a pleasant-smelling hydrocarbon that has been isolated from oil of marjoram. On hydrogenation over a palladium catalyst, α-terpinene reacts with 2 molar equivalents of H2 to yield a hydrocarbon, C10H20. On ozonolysis, followed by reduction with zinc and acetic acid, α-terpinene yields two products, glyoxal and 6-methyl-2,5- heptanedione.

 

(a) How many degrees of unsaturation does a-terpinene have?

 

(b) How many double bonds and how many rings does it have?

 

(c) Propose a structure for a-terpinene.

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