(а) HBr

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Draw the structural formula(s) for the major product(s) of each of the following reactions. Unless required, ignore stereochemical details.

 

**Chemical Reaction Illustration (a)**

This image depicts a chemical reaction involving an alkene structure. The structure on the left is a cyclohexene with an attached side chain ending in a vinyl group (an ethene group). Adjacent to this structure, there is a "plus" sign followed by the chemical formula HBr, indicating the presence of hydrogen bromide. An arrow points to the right, signifying the direction of the reaction, from left to right. This setup suggests an electrophilic addition reaction, such as the addition of HBr across the double bond of the alkene.
Transcribed Image Text:**Chemical Reaction Illustration (a)** This image depicts a chemical reaction involving an alkene structure. The structure on the left is a cyclohexene with an attached side chain ending in a vinyl group (an ethene group). Adjacent to this structure, there is a "plus" sign followed by the chemical formula HBr, indicating the presence of hydrogen bromide. An arrow points to the right, signifying the direction of the reaction, from left to right. This setup suggests an electrophilic addition reaction, such as the addition of HBr across the double bond of the alkene.
The image presents several chemical reactions involving a cyclohexene derivative and various reagents. Below is a transcription of each reaction step:

**(b)**

A cyclohexene derivative reacts with hydrobromic acid (HBr) in the presence of hydrogen peroxide (H₂O₂). This reaction is likely an anti-Markovnikov addition of HBr to the double bond.

**(c)**

A cyclohexene derivative reacts with hydrochloric acid (HCl). This reaction suggests the addition of HCl across the double bond, typically following Markovnikov’s rule.

**(d)**

A cyclohexene derivative reacts with chlorine (Cl₂) in dichloromethane (CH₂Cl₂). This reaction indicates the halogenation of the double bond to form a vicinal dihalide.

**(e)**

A cyclohexene derivative reacts with water (H₂O) in the presence of sulfuric acid (H₂SO₄). This reaction is an acid-catalyzed hydration, adding water across the double bond to form an alcohol.

**(f)**

Cyclohexene reacts with hydrogen gas (H₂). This reaction involves the hydrogenation of the double bond, typically resulting in an alkane.

Each diagram depicts a different functional group transformation characteristic of organic chemistry reactions involving alkenes.
Transcribed Image Text:The image presents several chemical reactions involving a cyclohexene derivative and various reagents. Below is a transcription of each reaction step: **(b)** A cyclohexene derivative reacts with hydrobromic acid (HBr) in the presence of hydrogen peroxide (H₂O₂). This reaction is likely an anti-Markovnikov addition of HBr to the double bond. **(c)** A cyclohexene derivative reacts with hydrochloric acid (HCl). This reaction suggests the addition of HCl across the double bond, typically following Markovnikov’s rule. **(d)** A cyclohexene derivative reacts with chlorine (Cl₂) in dichloromethane (CH₂Cl₂). This reaction indicates the halogenation of the double bond to form a vicinal dihalide. **(e)** A cyclohexene derivative reacts with water (H₂O) in the presence of sulfuric acid (H₂SO₄). This reaction is an acid-catalyzed hydration, adding water across the double bond to form an alcohol. **(f)** Cyclohexene reacts with hydrogen gas (H₂). This reaction involves the hydrogenation of the double bond, typically resulting in an alkane. Each diagram depicts a different functional group transformation characteristic of organic chemistry reactions involving alkenes.
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