Which of the following is not a correct match ?

Options

A. Isoprene - `CH_(2) = CH - CH = CH_(2)`
B. Diacetoneamine `- (CH_(3))_(2) underset(NH_(2))underset(|)(C ) - CH_(2) - COCH_(3)`
C. Pyrene - `"CCl"_(4)`
D. Chloretone `-(CH_(3))_(2) C- "CCl"_(3)`

Answer

To determine which of the following is not a correct match, we will analyze each option provided in the question.

### Step 1: Analyze Isoprene
Isoprene is known chemically as 2-methyl-1,3-butadiene.
- Structure: It consists of four carbon atoms with two double bonds. The structure can be represented as:
\[ \text{CH}_2=C(CH_3)-CH=CH_2 \]
- Isoprene is indeed a major component of natural rubber.

**Conclusion:** This match is correct.

### Step 2: Analyze Diacetone Amide
When two moles of acetone react in the presence of ammonia, they form diacetone amide.
- Structure of acetone: \(\text{CH}_3COCH_3\)
- The reaction leads to the formation of diacetone amide, which has the structure:
\[ \text{(CH}_3)_2C(=O)NHC(=O)(CH_3)_2 \]
- This indicates that the match is correct.

**Conclusion:** This match is correct.

### Step 3: Analyze Pyrene
Pyrene is a polycyclic aromatic hydrocarbon, but the question states that it is represented by CCl4 (carbon tetrachloride).
- CCl4 is used as a fire extinguisher and in the production of dyes and plastics, but it is not pyrene.
- Pyrene has a different structure and is not represented by CCl4.

**Conclusion:** This match is incorrect.

### Step 4: Analyze Chloritron
Chloritron is referred to as trichloro-2-methylpropane.
- The structure of trichloro-2-methylpropane can be represented as:
\[ \text{C(CH}_3)(\text{Cl})_3 \]
- It does not contain an alcoholic group (OH group), which is a key feature of alcohols.

**Conclusion:** This match is also incorrect.

### Final Conclusion
From the analysis:
- The incorrect matches are:
- C: Pyrene (CCl4 is not pyrene)
- D: Chloritron (trichloro-2-methylpropane does not have an OH group)

Thus, the answer to the question "Which of the following is not a correct match?" is:
- **C: Pyrene (CCl4)** and **D: Chloritron (trichloro-2-methylpropane)**.