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Which of the following does not form Grignard reagent on reaction with Mg in the presence of ether?(1)Chloroethane (2) 1-chloropropane (3)Bromobenzene (4) Vinyl chloride.The answer is 4 but how because vinyl halides also form grignard reagent?

Which of the following does not form Grignard reagent on reaction with Mg in the presence of ether?(1)Chloroethane (2) 1-chloropropane (3)Bromobenzene (4) Vinyl chloride.The answer is 4 but how because vinyl halides also form grignard reagent?

Grade:12th pass

1 Answers

Pooja
askIITians Faculty 477 Points
5 years ago
Dear Student,
In vinyl chloride CH2=CH-Cl the lone pair of Cl is in resonance with the double bond. So there is a partial double bond between C and Cl. In other options there is just a single bond. Single bonds are weaker than double bonds. Double bonds are difficult to break

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