answers AMINES: REACTIONS WITH NITROUS ACID - Chemguide
Chemguide – answers. AMINES: REACTIONS WITH NITROUS ACID. 1. Acidify the amine with dilute hydrochloric acid and then add sodium or potassium nitrite
questions AMINES: REACTIONS WITH NITROUS ACID - Chemguide
Chemguide – questions. AMINES: REACTIONS WITH NITROUS ACID. 1. Nitrous acid is unstable and has to be produced in the same test tube as the reaction is
questions AMINES: PREPARATION - Chemguide
a) To make a primary amine like ethylamine you can react a halogenoalkane like bromoethane with ammonia. State the conditions for this reaction. b) The
questions ACYL CHLORIDES: REACTIONS WITH - Chemguide
Chemguide – questions. ACYL CHLORIDES: REACTIONS WITH AMMONIA AND PRIMARY. AMINES. 1. Draw structures for ethylamine and phenylamine and explain how these
answers AMINES: PREPARATION - Chemguide
In the second reaction another ammonia molecule removes a hydrogen ion from the nitrogen in the salt to leave the free amine and produce the ammonium ions
questions PHENYLAMINE: AS A PRIMARY AMINE - Chemguide
Phenylamine is a much weaker base than a primary amine like ethylamine or than ammonia. Explain why. 2. The flow diagram below shows some reactions of
answers AMINES: AS NUCLEOPHILES - Chemguide
In the second reaction an equilibrium is set up involving a reaction between another ethylamine molecule which removes a hydrogen ion from the
questions ACID ANHYDRIDES: REACTIONS WITH - Chemguide
Reactions of acid anhydrides with these compounds involve two stages. In the first there is a reaction between the anhydride and ammonia or the amine
questions HALOGENOALKANES: REACTIONS WITH - Chemguide
Halogenoalkanes react with ammonia to form amines which come in three kinds – primary Give the conditions for the reaction of bromoethane with ammonia.
questions AMINES: AS BASES - Chemguide
b) Explain why the compounds are acting as bases in these reactions with water. c) Describe what happens when ammonia gas and methylamine gas come into contact
C h em g u id e - q u e s tio n s
AMINES: PREPARATION
1.a) To make a primary amine like ethylamine you can react a halogenoalkane like bromoethane with
ammonia. State the conditions for this reaction. b) The equations for the reaction (taken from the Chemguide page to save me time) are Describe in words what is happening in these two equations. c) Unfortunately the reaction doesn't stop there, and you end up with a mixture of several organic products rather than the two (the amine salt and the free amine) shown above. By writing equations like the ones in part (b), show what happens to make the next lot of products from those in the reactions above. d) The reaction wouldn't stop there either. There are three further organic products that you could get. Draw their structures. e) What would your major product be if you had a large excess of bromoethane in the original reaction mixture? f) What would your major product be if you had a large excess of ammonia in the original reaction mixture?2.Primary amines can be made from nitriles avoiding the complicated mixtures formed above. The
reaction can be done with either lithium tetrahydridoaluminate (lithium aluminium hydride), or hydrogen in the presence of a metal catalyst. a) Give the conditions for the reaction involving LiAlH4. b) This reaction is a reduction, and the equation is commonly given using the symbol [H] for the reducing agent. Write the equation for the reduction of CH3CH2CN using LiAlH4. c) Suggest a suitable catalyst for the reduction of CH3CH2CN with hydrogen gas. d) Write the equation for that reduction. www.chemguide.co.ukquotesdbs_dbs17.pdfusesText_23[PDF] amine reactions practice problems
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