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Haloalkanes and Haloarenes
Question
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Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
2-Chloro-2-methylbutane

Answer

In the given compound, there are two different sets of equivalent  b -hydrogen atoms. Thus, dehydrohalogenation of the compound yields two alkenes.

Saytzeff’s rule implies that in dehydrohalogenation reaction, the alkene having a greater number of alkyl groups attached to doubly bonded carbon atoms is preferably produced.

Thus, 2methylbut-2-ene is the major product in this reaction.

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Some More Questions From Haloalkanes and Haloarenes Chapter

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:

i) A single monochloride.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Arrange each set of compounds in order of increasing boiling points:
Bromomethane, Bromoform, Chloro-methane, Dibromomethane.