The treatment of `CH_3MgX` with `CH_3C-=C-H `produces

Options

A. a. CH_3 - CH = CH_2`
B. b.`CH_3C -= C - CH_3`
C. c.`CH_3 - oversetunderset(|)(H)(C) = oversetunderset(|)(H)(C) - CH_3`
D. d.`CH_4`

Answer

To solve the question regarding the treatment of `CH3MgX` with `CH3C≡CH`, we will follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are:
- `CH3MgX`: This is a Grignard reagent, where `X` can be a halogen (like Cl, Br, or I).
- `CH3C≡CH`: This is propyne, an alkyne compound.

### Step 2: Understand the Reaction Mechanism
Grignard reagents are strong nucleophiles and react with electrophiles. In this case, the terminal alkyne `CH3C≡CH` has an acidic hydrogen atom (the hydrogen attached to the carbon of the triple bond). Grignard reagents can react with these acidic hydrogens.

### Step 3: Reaction of Grignard Reagent with Terminal Alkyne
When `CH3MgX` reacts with `CH3C≡CH`, the Grignard reagent will deprotonate the terminal alkyne:
- The `CH3` from the Grignard reagent will bond with the terminal hydrogen of the alkyne, forming methane (`CH4`).
- This results in the formation of a new compound: `CH3C≡C-MgX`.

### Step 4: Identify the Product
The product of this reaction is:
- `CH3C≡C-MgX` (the Grignard reagent now bonded to the alkyne) and methane gas is released as a byproduct.

### Step 5: Conclusion
Thus, the treatment of `CH3MgX` with `CH3C≡CH` produces methane gas (`CH4`) and a new Grignard compound (`CH3C≡C-MgX`).

### Final Answer
The treatment of `CH3MgX` with `CH3C≡CH` produces methane gas (`CH4`) and `CH3C≡C-MgX`.

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