give answer in 2 step with explanation at the end of each step and final answer at the end:8. (4 poi n :
paints) Sa the following synthesis by adding the synthetic intermediate and appropriate
ns. C

Question

give answer in 2 step with explanation at the end of each step and final answer at the end:8. (4 poi n :
paints) Sa the following synthesis by adding the synthetic intermediate and appropriate
ns. Clearly show stereochemistry where appropriate. Balance the reactions.
OH o
gr? N
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© walrOy > | ol -
7 — eo
o
\ Nt i HO
O
9. (4 points) Complete the following reaction by showing all of the reactants necessary for the
transformation. Clearly identify stereochemistry where appropriate. Balance the reaction.
Io) aqueous "
Ys ac 2 B
| HO —» HC c
acetal hi a ~cws, +H0 ag ~Z
L's Hz H
10. (4 points) Which molecule in each pair (1 or 2) is more easily hydrolyzed?
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HC.
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Ha bod Hy H [4 EC] Ha &
11. (4 points) Draw the hydrolysis products of the following molecule.
o
D »
EPID: mA
Cc y
we” EZ No Fo Nn, *2H0 — we ~
Hy \
O 12. (4 points) Complete the following reactions by showing all of the products produced by the
transformation. Balance the reaction.
Fr X=
Ii iF ji H n
WC c
ame BCC”
HC” © wo 0 5 IN
oH No G7 CANN \
| . Lod oy
” CHy

VIPSolutions · Accepted Answer

Let's break down **question 8** as requested, into **2 steps** with explanations and a final answer:

---

## Question 8: Synthesis of Cyclopentanone Cyclopentanol

### **Step 1: Oxidation of Cyclopentanol- **Reaction:** Cyclopentanol (a secondary alcohol) is oxidized to cyclopentanone (a ketone).
- **Reagent:** $ \text{H}_2\text{CrO}_4 $ (chromic acid)
- **Explanation:** Chromic acid is a strong oxidizing agent that converts secondary alcohols into ketones.

**Reaction:**
$$
\text{Cyclopentanol} + \text{H}_2\text{CrO}_4 \rightarrow \text{Cyclopentanone} + \text{H}_2\text{O}
$$

---

### **Step 2: No Further Reaction Required**

- **Explanation:** The desired product (cyclopentanone) is already obtained after the oxidation step. No further transformation is needed.

---

## **Final Answer**

The overall synthesis is:
$$
\text{Cyclopentanol} \xrightarrow{\text{H}_2\text{CrO}_4} \text{Cyclopentanone}
$$

**Explanation:** The secondary alcohol (cyclopentanol) is oxidized to a ketone (cyclopentanone) using chromic acid. No further steps are necessary for this transformation.

---

**Summary Table:**

| Step | Starting Material | Reagent         | Product          |
|------|------------------|-----------------|------------------|
| 1    | Cyclopentanol    | $ \text{H}_2\text{CrO}_4 $ | Cyclopentanone   |

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