halogenoalkanes Flashcards
two types of mechanisms that halogenoalkanes do
nucleophilic substitution
elimination
what does the rate of a substitution reaction depend on
the strength of the C-X bond
weaker bond = easier to break = faster reaction
halogenoalkane + aqueous hydroxide ions reagents, conditions and mechanism and products
pottasium/sodium hydroxide, aqueous solution, heat under reflux, nucleophilic substitution, alcohol formed
halogenoalkane + cyanide reagents, conditions and mechanism and products
KCN reagent dissolved in ethanol/water mixture, heated under reflux, nucleophilic substitution, nitrile formed
halogenoalkane + ammonia all info
NH3 dissolved in ethanol, heated under pressure in a sealed tube, nucleophilic substitution, forms amine
how to maximise yield of halogenoalkane + ammonia products
use excess ammonia to prevent further substitution
elimination reaction of halogenoalkanes reaction info
potassium/sodium hydroxide reagent, ethanolic and heat conditions, forms alkene
definition of elimination reaction
removal of a small molecule (often water) from the organic molecule