(i) Identify $\mathbf{A}$ and provide a mechanism to account for its formation.
i).
$\mathrm{C}_{10} \mathrm{H}_{6} \mathrm{~N}_{2}$
ii). $\mathrm{KCN}$
3
A
(ii) Identify $\mathbf{B}$ and provide a mechanism to account for its formation.
i). $n-\mathrm{BuLi}$
ii). $\mathrm{CO}_{2}$
$\mathrm{C}_{9} \mathrm{H}_{6} \mathrm{O}_{2} \mathrm{~S}$
4
iii). $\mathrm{H}^{\oplus}$
B

Question

Accepted Answer

∻Solution∻ ‖ 1 ⋮ **Identify Compound A**: To identify compound A with the molecular formula $C_{10}H_{6}N_{2}$, we need to consider the reagents used in its synthesis. The use of PhCOCl suggests acylation, and KCN indicates a nucleophilic substitution where a cyano group replaces a leaving group. ‖ ‖ 2 ⋮ **Mechanism for the formation of A**: The mechanism likely involves the formation of a ketone from the starting material 3 via Friedel-Crafts acylation followed by a nucleophilic substitution with KCN to introduce the cyano group. ‖ ‖ 3 ⋮ **Identify Compound B**: To identify compound B with the molecular formula $C_{9}H_{6}O_{2}S$, we need to consider the reagents used in its synthesis. The use of n-BuLi suggests deprotonation, CO2 indicates carboxylation, and H+ suggests an acid work-up, likely leading to the formation of a carboxylic acid. ‖ ‖ 4 ⋮ **Mechanism for the formation of B**: The mechanism likely involves the deprotonation of the starting material 4 by n-BuLi to form a carbanion, followed by carboxylation with CO2 to introduce a carboxyl group, and finally, protonation with H+ to yield the carboxylic acid. ‖ ∻1 Answer∻ ⚹ Compound A is likely a naphthalene derivative with a ketone and a cyano group. The mechanism involves Friedel-Crafts acylation followed by nucleophilic substitution with KCN. ⚹ ∻2 Answer∻ ⚹ Compound B is likely a thiophene derivative with a carboxylic acid group. The mechanism involves deprotonation by n-BuLi, carboxylation with CO2, and acid work-up with H+. ⚹ ∻Key Concept∻ ⚹ The identification of organic compounds and their mechanisms of formation is based on the molecular formula and the reagents used in the synthesis. ⚹ ∻Explanation∻ ⚹ Compound A is synthesized through acylation and nucleophilic substitution, while Compound B is synthesized through deprotonation, carboxylation, and protonation. ⚹◊What are the chemical structures of compounds A and B?⍭ Generate me a similar question◊

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