`B overset(CO,H_2)underset("Oxo method")rarr CH_3CH=CH_2 overset(O_2,PdCl_2,CuCl_2)underset(H_2O("Wacker method"))rarr A`
What is relation between A and B?

Options

A. Analogues
B. Homologues
C. Both (1) and (2)
D. None of these

Answer

To determine the relationship between compounds A and B in the given reactions, we will analyze the reactions step by step.

### Step 1: Identify the starting compound B
The starting compound B is represented as an alkene, specifically CH₃CH=CH₂ (propene).

**Hint:** Look for the structure of the starting compound in the reaction.

### Step 2: Understand the Oxo method
The Oxo method involves the hydroformylation of alkenes, where an alkene reacts with carbon monoxide (CO) and hydrogen (H₂) in the presence of a catalyst (like Cu) to form an aldehyde. In this case, propene (B) will react to form two possible aldehyde products.

- The reaction can be represented as:
- CH₃CH=CH₂ + CO + H₂ → CH₃CH₂CHO (butanal) or CH₃CHO (propanal)

**Hint:** Remember that the Oxo method adds an aldehyde group to the alkene.

### Step 3: Understand the Wacker method
The Wacker method involves the oxidation of alkenes using oxygen (O₂) in the presence of palladium chloride (PdCl₂) and copper chloride (CuCl₂) to form ketones.

- For propene, the reaction can be represented as:
- CH₃CH=CH₂ + O₂ → CH₃COCH₃ (acetone)

**Hint:** The Wacker method typically converts alkenes to ketones.

### Step 4: Identify the products A and B
From the above steps:
- Product A is formed from the Wacker method and is a ketone (acetone).
- Product B is formed from the Oxo method and can be an aldehyde (butanal or propanal).

### Step 5: Determine the relationship between A and B
Both products A and B are derived from the same starting alkene (propene) but through different reactions. They are not homologous (not the same compound with a different number of carbon atoms), but they are analogous (they are both carbonyl compounds, one being a ketone and the other an aldehyde).

**Conclusion:** A and B are analogous compounds derived from the same alkene through different reactions.

**Final Answer:** A and B are analogous compounds.