Answer :
Grignard reagents are organometallic compounds that are commonly used in organic synthesis to form new carbon-carbon bonds. When a Grignard reagent is reacted with a ketone, the result is typically a tertiary alcohol. In the given examples, MeMgBr, EtMgBr, and PhMgBr are Grignard reagents based on methyl, ethyl, and phenyl groups respectively.
3-methyl-3-pentanol:
Grignard Reagent: MeMgBr
Ketone: 2-butanone
1-ethylcyclohexanol:
Grignard Reagent: EtMgBr
Ketone: 1-phenylpropanone
triphenylmethanol:
Grignard Reagent: PhMgBr
Ketone: benzophenone
5-phenyl-5-nonanol:
Grignard Reagent: PhMgBr
Ketone: 3-phenyl-3-pentanone
Grignard reagents are versatile and widely used in organic synthesis, and their use in combination with appropriate ketones allows for the production of a wide range of alcohols.
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