The reaction, `Ph-CH_(2)-CH=CH-overset(OH)overset(|)(CH)-CH_(3) underset("ketone(excess)"//Delta)overset(Al(BuO)_(3))rarrPhCH_(3)CH=CH-overset(O)overset(||)(C)-CH_(3)` is known as :

Options

A. Wolff-kishner reduction
B. Oppenauer oxidation
C. Meerwein - Ponndorf reaction
D. Clemmensen reduction

Explanation

To determine the name of the reaction given in the question, we will analyze the components and transformations involved in the reaction step by step.

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactants are `Ph-CH2-CH=CH-CH(CH3)-OH` (an alcohol) and an excess of ketone in the presence of `Al(BuO)3`.
- The product is `Ph-CH3-CH=CH-CO-CH3` (a ketone).

2. **Determine the Type of Reaction**:
- The reaction involves the conversion of an alcohol to a ketone, which indicates that it is an oxidation reaction. In this case, the hydroxyl group (-OH) is being oxidized to a carbonyl group (C=O).

3. **Evaluate the Options**:
- The options provided are:
- Wolf-Kishner Reduction
- Clemenson Reduction
- Marwin Reaction
- Open Air Oxidation
- Since we established that the reaction is an oxidation, we can eliminate the reduction reactions (Wolf-Kishner, Clemenson, and Marwin).

4. **Identify the Correct Reaction**:
- The only option left that corresponds to an oxidation reaction is "Open Air Oxidation." This is a known reaction where alcohols are oxidized to ketones or aldehydes in the presence of oxidizing agents.

5. **Conclusion**:
- Therefore, the correct answer to the question is that the reaction is known as **Open Air Oxidation**.