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Solved: Show how the following compounds could be
Chapter 7, Problem 54P(choose chapter or problem)
Problem 54P
Show how the following compounds could be synthesized starting with ethyne:
a. Cis-2-octene b. trans-3-heptene
Questions & Answers
QUESTION:
Problem 54P
Show how the following compounds could be synthesized starting with ethyne:
a. Cis-2-octene b. trans-3-heptene
ANSWER:
Solution 54P:
Here, we are going to write the synthesizing steps to prepare the following product by using the appropriate reagents.
Step 1:
a. Cis-2-octene
Here, acetylene reacts with amide to form acetylide ion which on react with corresponding methyl bromide to form 1-propyne. Secondly, in similar way, 1-propyne reacts with amide to form acetylide ion which react with alkyl halide to form 2-octyne. Finally, 2-octyne undergo hydrogenation reaction in presence of Lindlar’s catalyst to form the cis-2-octene as a product.
The reaction steps are given below: