1). Propene to acetone

2). Bromobenzene to 1-phenyl ethanol

To convert propene to acetone and bromobenzene to 1-phenyl ethanol, specific chemical reactions are employed. Here’s a breakdown of each transformation:

Conversion of Propene to Acetone

The process involves several steps:

• Hydration: Propene can undergo hydration in the presence of an acid catalyst to form isopropanol (isopropyl alcohol).
• Oxidation: Isopropanol is then oxidized using an oxidizing agent like potassium dichromate or chromic acid to yield acetone.

This method effectively transforms propene into acetone through intermediate steps.

Transformation of Bromobenzene to 1-Phenyl Ethanol

This conversion can be achieved through a nucleophilic substitution reaction:

• Grignard Reaction: First, bromobenzene reacts with magnesium to form phenylmagnesium bromide.
• Reaction with Carbonyl Compound: The phenylmagnesium bromide can then react with formaldehyde, followed by hydrolysis, to produce 1-phenyl ethanol.

This sequence allows for the efficient synthesis of 1-phenyl ethanol from bromobenzene.