What products are formed when zinc reacts with(i) Vicinal C2H4Br2 and (ii) CH3CHBr – CH2Br
Question
What products are formed when zinc reacts with:
- Vicinal C2H4Br2
- CH3CHBr – CH2Br
Solution
(i) When zinc reacts with vicinal C2H4Br2 (1,2-dibromoethane), it forms an organozinc compound known as ethylenezinc bromide (C2H4ZnBr2). This reaction is a type of organometallic synthesis.
Here's the reaction:
C2H4Br2 + Zn → C2H4ZnBr2
(ii) When zinc reacts with CH3CHBr-CH2Br (1,2-dibromopropane), it forms propylenezinc bromide (C3H6ZnBr2). This is also an organometallic synthesis.
Here's the reaction:
CH3CHBr-CH2Br + Zn → C3H6ZnBr2
In both reactions, the zinc replaces the bromine atoms, forming a bond with the carbon atoms.
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