The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is:
Hydrocarbons · Class 11 · JEE Main Previous Year Question
The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is:
- a
, , ,
- b
, , ,
- c
, , ,
- d✓
, , ,
, , ,
Key Points:
- Use acylation then reduction (not direct alkylation) to get ethyl group cleanly
- Clemmensen: Zn-Hg/HCl reduces C=O to CH2
- Order of substitution determines regioselectivity of final product
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