Multiple Choice
In the context of organic chemistry reactions, what is the expected result when bacteria growing on blood agar produce hemolysins?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following reagents is commonly used to convert an alcohol into an alkyl halide in organic chemistry reactions?
A
Lithium aluminum hydride (LiAlH4)
B
Thionyl chloride (SOCl2)
C
Sodium borohydride (NaBH4)
D
Pyridinium chlorochromate (PCC)
Verified step by step guidance1
Identify the functional group transformation: We are converting an alcohol (R-OH) into an alkyl halide (R-X, where X is a halogen).
Understand the role of each reagent: Lithium aluminum hydride (LiAlH4) is a reducing agent, Sodium borohydride (NaBH4) is also a reducing agent, and Pyridinium chlorochromate (PCC) is an oxidizing agent. None of these are typically used for converting alcohols to alkyl halides.
Focus on Thionyl chloride (SOCl2): This reagent is commonly used to convert alcohols into alkyl chlorides. It reacts with the alcohol to replace the hydroxyl group (-OH) with a chlorine atom (Cl).
Consider the mechanism: The reaction with SOCl2 typically involves the formation of an intermediate chlorosulfite ester, which then decomposes to form the alkyl chloride and release sulfur dioxide (SO2) and hydrogen chloride (HCl) gases.
Conclude the reagent choice: Based on the functional group transformation and the typical use of reagents, Thionyl chloride (SOCl2) is the correct choice for converting an alcohol into an alkyl halide.
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