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Grignard reagents and organolithium compounds on addition to dry ice separately, followed by hydrolysis gives |
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Answer» KETONES and carboxylic acids respectively `R-MgX+O=C=Oto[R-overset(O)overset(||)(C)-OMgX] underset(-Mg(OH)X)overset(H^(+)//H_(2)O)to underset("Carboxylic acids")(R-overset(O)overset(||)(C)-OH)` Organolithium compounds being more nucleophilic add to C=O of addition product (I) to GIVE addition product (II) which upon SUBSEQUENT hydrolysis gives a ketone. `R-Li+O=C=Otounderset((I))([R-overset(O)overset(||)(C)-Oli ]) overset(R-Li)to [R-underset(R)underset(|)overset(O" "Li)overset(|)(C)-OLi]overset(H^(+)//H_(2)O)to[R-underset(R)underset(|)overset(OH)overset(|)(C)-OH underset(-H_(2)O)to]underset("Ketone")(R-overset(O)overset(||)(C)-R)`. |
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