Question

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Best Reagent to remove -Br group and add -NH2 ?
Elaborate the mechanism...

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@BeardoBoy ​

Answer 1

Answer:

Water drives to the carbonyl side; removal of water drives to ... Biologically amine + acid → amide is routine, and is facilitated by complex enzyme ... The carbonyl reactant can be an aldehyde or a ketone.

PhMgBr+H2O=PhH+Mg(OH)Br (or some other Magnesium species, doesn't really matter. Alternatively you could use BuLi for metal-halogen exchange and then do an aqueous workup.

Elimination of hydrogen bromide to form alkenes [ E1 and E2]. ... (electron pair donor), by removing a proton from the halogenoalkane to form water.

The electrophilic addition of bromine to ethene. Alkenes react in the cold with pure liquid bromine, or with a solution of bromine in an organic solvent like tetrachloromethane. The double bond breaks, and a bromine atom becomes attached to each carbon.

Answer 2

heya.. your Answer ⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇

The answer is amine.

The answer is amine.It is the reagent can provide distinction between aliphatic −NH2 group and aromatic - NH2.

hope this helps you