Strecker's synthesis.

Explanation

**Strecker's Synthesis: Step-by-Step Solution**

Strecker's synthesis is a method used to synthesize amino acids from aldehydes or ketones. The process involves the reaction of an aldehyde or ketone with ammonia and hydrogen cyanide (HCN). Here’s a step-by-step breakdown of the reaction:

### Step 1: Formation of an Imines
1. **Starting Material**: Begin with an aldehyde (RCHO) or ketone (RCOR').
2. **Reaction with Ammonia**: Add ammonia (NH₃) to the aldehyde or ketone. This will lead to the formation of an imine (RCH=NH₂).
- **Reaction**: RCHO + NH₃ → RCH=NH₂ + H₂O
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