Acetonitrile `(Meoverset(o+)(N)-=overset(ɵ)(C ))` on reaction with `Cl_(2)` with `DMSO` gives methyl isocyanate `(MeN=C=O)`. Isocyanides can also be oxidised to alkyl isocyanates with:

Options

A. a.`HgO`
B. b.`Hg_(2)O`
C. c.`Ag_(2)O`
D. d.`O_(3)`

Answer

To solve the question regarding the oxidation of isocyanides to alkyl isocyanates, we will break down the process step by step.

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The given reactant is Acetonitrile, which has the structure \( CH_3C \equiv N \).

2. **Reaction with Chlorine and DMSO**:
- Acetonitrile reacts with chlorine (\( Cl_2 \)) in the presence of dimethyl sulfoxide (DMSO).
- The reaction leads to the formation of methyl isocyanate, which has the structure \( CH_3N=C=O \).

3. **Understanding Isocyanates**:
- Isocyanates are compounds that contain the functional group \( -N=C=O \). In this case, methyl isocyanate is formed from acetonitrile.

4. **Oxidation of Isocyanides**:
- The question asks about the oxidation of isocyanides to alkyl isocyanates.
- Isocyanides can be oxidized to alkyl isocyanates using specific oxidizing agents.

5. **Identifying the Oxidizing Agent**:
- One common oxidizing agent for this transformation is mercuric oxide (\( HgO \)).
- The reaction can be represented as:
\[ RNC + HgO \rightarrow RN=C=O + Hg \]
- Here, \( RNC \) represents the isocyanide, and \( RN=C=O \) represents the alkyl isocyanate produced.

6. **Conclusion**:
- Therefore, isocyanides can be oxidized to alkyl isocyanates with mercuric oxide (\( HgO \)).

### Final Answer:
Isocyanides can be oxidized to alkyl isocyanates with **mercuric oxide (HgO)**.