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What is the LUCAS reagent? Explain its significance in the manufacturing of haloalkanes.

What is the LUCAS reagent? Explain its significance in the manufacturing of
haloalkanes.

Grade:12

1 Answers

Arushi Sharma
askIITians Faculty 24 Points
2 years ago
Dear Student,
Mechanism of the Lucas Test
An SN1 nucleophilic substitution is the mechanism used in this reaction. It may be split down into the two steps below.

1st step:
The hydrochloric acid protonates the alcohol's OH group. Because chlorine is a stronger nucleophile than water, it now takes the place of the water molecule that was previously connected to the carbon. A carbocation is formed as a result of this.
2nd Step:
The carbocation is now attacked by the chloride anion, resulting in the formation of an alkyl chloride. Because this alkyl chloride is insoluble, the solution becomes murky. The Lucas test's net mechanism is depicted in the diagram below:
728-1320_Lucas-Reagent-Mechanism.jpg

Thank you

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