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Show the reaction of 1 mole of bromine in CCl4 with cis-1,2-diphenylethyne. underneath this reaction, show...

Show the reaction of 1 mole of bromine in CCl4 with cis-1,2-diphenylethyne. underneath this reaction, show the mechanism of this reaction. also, include the purpose of the CCl4.

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1,2 diphenyl ethyne reacts with 1 mole of Br2 there forms trans product. 1 st step addition of Bromine forms cyclic bromonium ion .another Br- attacks opposite site hence anti directlion and forms trans product.

The ccl4 used in this reaction is used as solvent purpose.if Br2 is directly add to reaction there is chances of free radical reactions and may get different products.ccl4 can not react with Bromine . After adding ccl4 in Bromine there is increasing dipole dipole interaction in Bromine Wich makes formation of Br+ bond easily .

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