Explain the preparation of carboxylic acids from Grignard reagent.
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Grignard reagents react with dry ice (solid CO2) followed by aqueous acid work-up to give carboxylic acids. CO2 can be thought of as a being a dicarbonyl compound : O=C=O. Note that the carboxylic acid contains one extra C atom compared to the original halide from which the Grignard reagent was prepared....
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