Halogenoalkanes undergo nucleophilic substitution with aqueous alkali, ethanolic potassium cyanide, and ammonia to form alcohols, nitriles, and primary amines, respectively. Additionally, elimination reactions occur with hot ethanolic KOH to produce alkenes, with reactivity increasing in the order C-Cl < C-Br < C-I. For the full resource, visit Chemsheets . REACTIONS OF HALOGENOALKANES 1 | Chemsheets
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| Reaction | Reagent & conditions | Product | Mechanism | |----------|----------------------|---------|------------| | 1-bromopropane + NaOH(aq) | NaOH(aq), warm | propan-1-ol | SN2 | | 2-bromo-2-methylpropane + NaOH(aq) | NaOH(aq), room temp | 2-methylpropan-2-ol | SN1 | | 1-chlorobutane + KCN | KCN in ethanol/water, reflux | pentanenitrile | SN2 | | 2-bromobutane + NH₃(excess) | conc NH₃ in ethanol, sealed tube, heat | butan-2-amine | SN2 (with excess NH₃ to avoid further substitution) | | 2-bromopropane + NaOH/ethanol | NaOH in ethanol, heat | propene | E2 | | 1-bromo-2-methylpropane + H₂O | H₂O, slow hydrolysis | 2-methylpropan-1-ol | SN2 (very slow) | reactions of halogenoalkanes 1 chemsheets answers exclusive