Chapter 12: Q48E (page 354)
Rank the double bonds below in terms of increasing stability:

Short Answer

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Chapter 12: Q48E (page 354)
Rank the double bonds below in terms of increasing stability:


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Aprobarbital, a barbiturate once used in treating insomnia, is synthesized in three steps from diethyl malonate. Show how you would synthesize the necessary dialkylated intermediate, and then propose a mechanism for the reaction of this intermediate with urea to give aprobarbital.

Nitriles, R - C = N , undergo a hydrolysis reaction when heated with
aqueous acid. What is the structure of the compound produced by hydrolysis of propanenitrile, CH3CH2C=N , if it has IR absorptions from 2500-3100cm-1 and at 1710cm-1 , and has M+ = 74?
Beginning with acetylene and any alkyl halide needed, how would you synthesize the following compounds?
(a)Decane
(b)2,2-Dimethylhexane
(c)Hexanal
(d)2-Heptanone
Question: At what approximate positions might the following compounds show
IR absorptions?
(A)

(b)

(c)

(d)

(e)

The Favorskii reactioninvolves the treatment of an -bromo ketone with a base to yield a ring-contracted product. For example, the reaction of 2-bromocyclohexanone with aqueous NaOH yields cyclopentanecarboxylic acid. Propose a mechanism.

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