MolSynapsequestion bank

MolSynapse / Question bank / Hydrocarbons / Conjugated dienes and Diels-Alder reaction

JEE Main levelSingle correct optionDifficulty 2 of 3hc193

Reductive ozonolysis ( $O X_{3}$ then $Zn / H X_{2} O$ ) of cyclohexa-1,3-diene gives:

AGlyoxal ( $OHC - CHO$ ) and butanedial
BHexanedial only
CTwo molecules of butanedial
DGlyoxal and hexane-2,5-dione

Answer: A

Number the ring C1=C2-C3=C4-C5-C6. Cleaving both double bonds separates C2-C3 as

OHC - CHO

and leaves C4-C5-C6-C1 as

OHC - CH X_{2} - CH X_{2} - CHO

. The products are glyoxal and butanedial.

Practice Hydrocarbons More on Conjugated dienes and Diels-Alder reaction

Previous questionNext question

More questions on Conjugated dienes and Diels-Alder reaction