amines DONT UNDERSTAND NEED TO DO WITH MIKE
No description yet. This curated deck is ready for daily study.
Card preview (8)
explain why butyl amine is able to act as a base write an equation for the reaction of butylamine with aqueous HCl
lone pair on nitrogen is able to accept a proton C4H11NH2 + HCl —> C4H11NH3+Cl-
why is phenyl amine one of the weakest bases
• lone pair on Nitrogen is less available • because the lone pair of electrons on the N are with drawn as they overlap with the delocalised electrons in the benzene ring
why are alkyl amines stronger bases
• lone pair on nitrogen is more available/ lone pair on N accepts H+ better • because alkyl groups release electrons (inductive effect)
give the reagents and conditions of the 2 methods to produce an amine
halogenoalkane - halogenoalkane with an excess of ammonia in a sealed tube nitrile - reduction of nitrile using LiAlH4 (lithium aluminium hydride dissolved in ether) - reduction of nitrile
How do you make a primary amine from reducing a nitrile (HINT: 2 step reaction)
• halogenoalkane reacts with cyanide ion in aqueous ethanol (nucleophilic substitution) RBr + CN- —–> RCN + :Br- • nitriles are reduced to primary amines with a Ni/H2 catalyst R - CN + 2H2 —> RCH2NH2 only a primary amine is formed in this reaction
what is the 2 step reaction used to produce phenyl amine from nitrobenzene
• mix nitrobenzene with tin (Sn) and conc HCl leave at room temp it is a reduction reaction • add NaOH to remove H+ from phenylammonium ion
give 3 uses of amines
• dyes • drugs • in polymers (e.g: nylon)
what are quaternary ammonium compounds used for
in the manufacturing of conditioner for hair and fabric they are called cationic surfactants