Reagents a. HCI b. HBr c. H₂O, H₂SO4 d. Br₂ e. Cl₂ f. H₂, Pd 9. Br₂, H₂O h. Cl₂, H₂O i. OsO4 then NaHSO3 j. k. 1. HC=CH Hg(OAc)2. H₂O then NaBH4 BH3 then H₂O₂, NaOH O3 then (CH3)2S m. n. 0. p. q. r. 2 equivalents of NaNH₂ H₂, Lindlar's catalyst Na/NH3 H₂SO4, HgSO4 (sia) 2BH then H₂O₂, NaOH 1 equivalent of NaNH₂ In this synthesis starting with acetylene, reagents from the table are used to carry out the indicated steps (shown in blue). In the box below, draw the structure of compound h.

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**Organic Chemistry Synthesis Exercise**

**Reagents:**
a. HCl  
b. HBr  
c. H₂O, H₂SO₄  
d. Br₂  
e. Cl₂  
f. H₂, Pd  
g. Br₂, H₂O  
h. Cl₂, H₂O  
i. OsO₄ then NaHSO₃  
j. Hg(OAc)₂, H₂O then NaBH₄  
k. BH₃ then H₂O₂, NaOH  
l. O₃ then (CH₃)₂S  
m. 2 equivalents of NaNH₂  
n. H₂, Lindlar's catalyst  
o. Na / NH₃  
p. H₂SO₄, HgSO₄  
q. (sia)₂BH then H₂O₂, NaOH  
r. 1 equivalent of NaNH₂  

In this synthesis starting with acetylene, reagents from the table are used to carry out the indicated steps (shown in blue). In the box below, draw the structure of **compound h**.

**Instructions:**
- Use the wedge/hash bond tools to indicate stereochemistry where it exists.
- In cases where there is more than one answer, just draw one.
- Show stereochemistry in a meso compound.
- Do not include counter-ions, e.g., Na⁺, I⁻, in your answer.

(Note: Utilize the drawing tools provided below to represent the chemical structure.)

**[Drawing Tools Instructions]**
Transcribed Image Text:**Organic Chemistry Synthesis Exercise** **Reagents:** a. HCl b. HBr c. H₂O, H₂SO₄ d. Br₂ e. Cl₂ f. H₂, Pd g. Br₂, H₂O h. Cl₂, H₂O i. OsO₄ then NaHSO₃ j. Hg(OAc)₂, H₂O then NaBH₄ k. BH₃ then H₂O₂, NaOH l. O₃ then (CH₃)₂S m. 2 equivalents of NaNH₂ n. H₂, Lindlar's catalyst o. Na / NH₃ p. H₂SO₄, HgSO₄ q. (sia)₂BH then H₂O₂, NaOH r. 1 equivalent of NaNH₂ In this synthesis starting with acetylene, reagents from the table are used to carry out the indicated steps (shown in blue). In the box below, draw the structure of **compound h**. **Instructions:** - Use the wedge/hash bond tools to indicate stereochemistry where it exists. - In cases where there is more than one answer, just draw one. - Show stereochemistry in a meso compound. - Do not include counter-ions, e.g., Na⁺, I⁻, in your answer. (Note: Utilize the drawing tools provided below to represent the chemical structure.) **[Drawing Tools Instructions]**
**Synthesis Pathway Using Organic Chemistry Roadmaps**

**Diagram Explanation:**
The diagram provides a synthesis map for transforming various compounds using specific reagents. The process starts with the base compound (HC≡CH) and progresses through multiple steps, resulting in different final compounds.

- **Compound Overview:**
  - **Compound a**: Formed from the base compound HC≡CH using reagent r.
  - **Compound b**: Formed from HC≡CH using reagent n.
  - **Compound c**: Derived from HC≡CH using reagent b.
  - **Compound d**: Produced from compounds a and c.
  - **Compound e**: Created from HC≡CH using reagent a.
  - **Compound f**: Formed from compound d using reagent r.
  - **Compound g**: Obtained from compound e using reagent f.
  - **Compound h**: Synthesized from compounds f and g.
  - **Compound i**: Developed from compound h using reagent n.
  - **Compound j**: Final compound, produced from compound i using reagent i.

**Reagents List:**

a. HCl  
b. HBr  
c. H₂O, H₂SO₄  
d. Br₂  
e. Cl₂  
f. Na, NH₃  
g. (sia)₂BH then H₂O₂, NaOH  
h. O₃, (CH₃)₂S  
i. 1. O₃, 2. H₂O  
j. NaBH₄  
k. H₂, Pd-C  
l. KMnO₄, H₃O⁺  
m. 2 equivalents of NaNH₂  
n. H₂, Lindlar's catalyst  
o. Na / NH₃  
p. H₂SO₄, HgSO₄  

This roadmap illustrates how different reagents are utilized for specific transformations within an organic synthesis pathway. Each step corresponds to a specific reaction, advancing through the synthesis sequence.
Transcribed Image Text:**Synthesis Pathway Using Organic Chemistry Roadmaps** **Diagram Explanation:** The diagram provides a synthesis map for transforming various compounds using specific reagents. The process starts with the base compound (HC≡CH) and progresses through multiple steps, resulting in different final compounds. - **Compound Overview:** - **Compound a**: Formed from the base compound HC≡CH using reagent r. - **Compound b**: Formed from HC≡CH using reagent n. - **Compound c**: Derived from HC≡CH using reagent b. - **Compound d**: Produced from compounds a and c. - **Compound e**: Created from HC≡CH using reagent a. - **Compound f**: Formed from compound d using reagent r. - **Compound g**: Obtained from compound e using reagent f. - **Compound h**: Synthesized from compounds f and g. - **Compound i**: Developed from compound h using reagent n. - **Compound j**: Final compound, produced from compound i using reagent i. **Reagents List:** a. HCl b. HBr c. H₂O, H₂SO₄ d. Br₂ e. Cl₂ f. Na, NH₃ g. (sia)₂BH then H₂O₂, NaOH h. O₃, (CH₃)₂S i. 1. O₃, 2. H₂O j. NaBH₄ k. H₂, Pd-C l. KMnO₄, H₃O⁺ m. 2 equivalents of NaNH₂ n. H₂, Lindlar's catalyst o. Na / NH₃ p. H₂SO₄, HgSO₄ This roadmap illustrates how different reagents are utilized for specific transformations within an organic synthesis pathway. Each step corresponds to a specific reaction, advancing through the synthesis sequence.
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