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------------------------------------------------ Given a Grignard reagent, draw a ketone that can be used to produce each of the following compounds:

1. Compound: 3-methyl-3-pentanol
- Grignard Reagent: MeMgBr
- Ketone: __________

2. Compound: 1-ethylcyclohexanol
- Grignard Reagent: EtMgBr
- Ketone: __________

3. Compound: triphenylmethanol
- Grignard Reagent: PhMgBr
- Ketone: __________

4. Compound: 5-phenyl-5-nonanol
- Grignard Reagent: PhMgBr
- Ketone: __________

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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