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Chapter 8: Q70cE. (page 262)

We’ll see in the next chapter that alkynes undergo many of the same reactions that alkenes do. What product might you expect from each of the following reactions?

Short Answer

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The reaction is an example of electrophilic addition. A brominium ion is formed when alkyne undergoes elecrophilic addition reaction.

Step by step solution

01

Introduction

The reaction is an example of electrophilic addition. A brominium ion is formed when alkyne undergoes elecrophilic addition reaction.

02

Chemical reaction involved

03

Reaction of alkyne with alkyl halide

When alkyne reacts with alkyl halide, they undergo an additional reaction to form halogen substituted alkene.Alkyne followa Markovnikov regiochemistry in which one halogen atom and one hydrogen atom are always added in a trans relationship with each other.

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Most popular questions from this chapter

Compound A has the formula C10H16. On catalytic hydrogenation over palladium, it reacts with only 1 molar equivalent of H2. Compound A also undergoes reaction with ozone, followed by zinc treatment, to yield a symmetrical diketone, B(C10H16O2).

How many rings does A have?

The following alkene undergoes hydroboration–oxidation to yield a single product rather than a mixture. Explain the result, and draw the product showing its stereochemistry.

Question:How would you carry out the following transformations? Tell what

reagents you would use in each case.

(b)

When an unsymmetrical alkene such as propene is treated with N-bromosuccinimide in aqueous dimethyl sulfoxide, the major product has the bromine atom bonded to the less highly substituted carbon atom. Is this Markovnikov or non-Markovnikov orientation? Explain

Which of the reactions below would result in a product mixture thatwould rotate plane-polarized light?

a)
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