Ethyl isocyanate on hydrolysis with water partially gives

Options

A. Ehtyl amine
B. N-ethyl carbamic acid
C. Ethyl carbylamine
D. Propane nitrile

Answer

To solve the question regarding the hydrolysis of ethyl isocyanate with water, we will follow these steps:

### Step 1: Draw the Structure of Ethyl Isocyanate
Ethyl isocyanate has the following structure:
- It consists of an ethyl group (C2H5) attached to an isocyanate functional group (N=C=O).
- The complete structure can be represented as:
\[ \text{C}_2\text{H}_5\text{N=C=O} \]

### Step 2: Hydrolysis Reaction
When ethyl isocyanate reacts with water, the oxygen atom in water, which is more electronegative, will attack the electrophilic carbon atom in the isocyanate group. This leads to the formation of a tetrahedral intermediate.

### Step 3: Formation of N-Ethylcarbamic Acid
In the tetrahedral intermediate, the carbon atom becomes positively charged, and the bond between carbon and nitrogen will shift. This results in the formation of N-ethylcarbamic acid:
- The structure of N-ethylcarbamic acid can be represented as:
\[ \text{C(=O)(OH)(N-C}_2\text{H}_5\text{)} \]

### Step 4: Complete Hydrolysis
If hydrolysis continues, the N-ethylcarbamic acid can further react with water. The carbon-oxygen double bond can break, leading to the formation of carbon dioxide (CO2) and a nitrene intermediate.

### Step 5: Formation of Ethylamine
The nitrene intermediate can then react with water, leading to the formation of ethylamine (C2H5NH2):
- The structure of ethylamine is:
\[ \text{C}_2\text{H}_5\text{NH}_2 \]

### Conclusion
- **Partial Hydrolysis** of ethyl isocyanate results in the formation of **N-ethylcarbamic acid**.
- **Complete Hydrolysis** leads to the formation of **ethylamine**.

### Final Answer
Ethyl isocyanate on hydrolysis with water partially gives **N-ethylcarbamic acid**.

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