Hexanedial, $OHC (CH X_{2}) X_{4} CHO$ , is treated with dilute NaOH and warmed so that the intramolecular aldol product dehydrates. The product is

Acyclohex-1-ene-1-carbaldehyde
Bcyclohex-2-en-1-one
Ccyclopent-1-ene-1-carbaldehyde
Dcyclobut-1-ene-1-carbaldehyde

Answer: C

The enolate at C2 attacks the C6 aldehyde, forming a ring of C2 to C6, which is five-membered. Loss of water gives a C=C conjugated with the remaining CHO. The product is cyclopent-1-ene-1-carbaldehyde.

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Hexanedial, OHC(CHX2​)X4​CHO, is treated with dilute NaOH and warmed so that the intramolecular aldol product dehydrates. The product is

Answer: C

More questions on Aldol, Cannizzaro, Perkin, Claisen and related condensations

Hexanedial, $OHC (CH X_{2}) X_{4} CHO$ , is treated with dilute NaOH and warmed so that the intramolecular aldol product dehydrates. The product is