Select the reaction with the correct major pr | vedclass

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Question

(A) Let us analyze each reaction:$A$: Acetone $(CH_3COCH_3)$ reacts with dry $HCl$ gas to undergo aldol condensation followed by dehydration to form m

Vedclass · Accepted Answer

Acetone $\xrightarrow{	ext{dry } HCl, 25^{\circ}C}$ Mesitylene

Vedclass · Answer

(A) Let us analyze each reaction:$A$: Acetone $(CH_3COCH_3)$ reacts with dry $HCl$ gas to undergo aldol condensation followed by dehydration to form mesitylene ($1,3,5$-trimethylbenzene). This is a standard reaction.$B$: Formaldehyde $(HCHO)$ at $450^{\circ}C$ does not simply decompose into $H_2$ and $CO$ as the major pathway.$C$: Acetaldehyde $(CH_3CHO)$ undergoes aldol condensation with $KOH$,not the Cannizzaro reaction (which requires aldehydes without $\alpha$-hydrogens).$D$: This is a crossed-Cannizzaro reaction between benzaldehyde and formaldehyde. The correct products are sodium benzoate $(PhCOONa)$ and methanol $(CH_3OH)$. Both $A$ and $D$ are chemically correct reactions. However,in the context of standard textbook questions,$A$ is the classic example of acid-catalyzed trimerization of acetone to mesitylene.

Select the reaction with the correct major product.

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