Choose the correct missing reagent/condition for the following reaction. To preview the image cliick here O A. 1. Sia2BH.THF 2. H202/-OH B. HgSO4/H2SO4/H20 OC. A or B O D. H30+ is H

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Chapter1: Chemical Foundations
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**Question:**

Choose the correct missing reagent/condition for the following reaction.

**Reaction:**

An alkyne attached to a phenyl group (\( \text{C}_6\text{H}_5-C\equiv C- \)) is converted to an aldehyde group (\( \text{C}_6\text{H}_5-CHO \)).

**Options:**

- A. 1. Sia\(_2\)BH, THF  2. H\(_2\)O\(_2\)/-OH
- B. HgSO\(_4\)/H\(_2\)SO\(_4\)/H\(_2\)O
- C. A or B
- D. H\(_3\)O\(^+\)

**Explanation:**

The question asks which reagents or conditions are needed to transform a terminal alkyne to an aldehyde. The arrow in the reaction indicates the transformation of an alkyne to a carbonyl group, specifically an aldehyde, which is located at the end of the carbon chain.
Transcribed Image Text:**Question:** Choose the correct missing reagent/condition for the following reaction. **Reaction:** An alkyne attached to a phenyl group (\( \text{C}_6\text{H}_5-C\equiv C- \)) is converted to an aldehyde group (\( \text{C}_6\text{H}_5-CHO \)). **Options:** - A. 1. Sia\(_2\)BH, THF 2. H\(_2\)O\(_2\)/-OH - B. HgSO\(_4\)/H\(_2\)SO\(_4\)/H\(_2\)O - C. A or B - D. H\(_3\)O\(^+\) **Explanation:** The question asks which reagents or conditions are needed to transform a terminal alkyne to an aldehyde. The arrow in the reaction indicates the transformation of an alkyne to a carbonyl group, specifically an aldehyde, which is located at the end of the carbon chain.
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