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  • When , CH3-CH2MgBr is treated with CO2 , CH3CH2COOH is formed , The C of -COOH group comes from -Option: 1

When , CH3-CH2MgBr is treated with CO2 , CH3CH2COOH is formed , The C of -COOH group comes from -

Option: 1

methylene group


Option: 2

-CH3 group


Option: 3

from CO2 gas


Option: 4

None of these


Answers (1)

best_answer

As we learnt ,

Grignard reagent with CO2 (dry ice) forms carboxylic acid via carboxylic acid salt as intermediate.

\mathrm{RMgX+CO_{2}\rightarrow RCOOMgX\rightarrow RCOOH}

Carbon of -COOH group comes from CO2 gas.

Hence, the correct answer is Option (3)

Posted by

mansi

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