Here, we are going to synthesis butanoic acid from ethanol and learn the reaction between ethanol and butanoic acid.
Derive butanoic acid by starting from Ethanol. You can only use ethanol as an organic compound and following reagents during the conversion.
Other reactants : Na , Concentrated H2SO4 , H+/KMnO4 , Br2 , Pd/BaSO4/Quinolene , dilute NaOH , organic peroxides , HBr , Alcoholic KOH
In this tutorial, we study about
Steps of preparation of butanoic acid from ethanol is explained below.
Ethanol is heated with concentrated sulfuric acid to give ethene. Ethene is an alkene compound.
Ethene reacts with liquid bromide ( Br2 / CCl4 ) and give 1-2-dibromoethane compound which is an alkyl halide.
1-2-dibromoethane is heated with alcoholic KOH to get ethyne.
Less amount of Na is added to ethyne. Sodium salt of alkyne is formed. This can be used to extend carbon chain.
Ethene reacts with HBr and give bromoethane.
Sodium salt of alkyne and bromoethane react to give the compound with extended carbon chain. That is 1-butyne. This is also an alkyne compound with four carbon atoms.
1-butyne reacts with H2 / Lindlar's catalyst to give 1-butene
1-butene reacts with HBr in the presence of organic peroxides to give 1-bromobutane.
1-butanol is given by 1-bromobutane with reaction of dilute NaOH.
Butanol is oxidized to butanoic acid by acidic potassium permanganate ( H+ / KMnO4 ).
Ethanol is an alcohol compound. Butanoic acid is a carboxylic acid. Therefore in the presence of concentrated H2SO4, ester product is given. This reaction is a reversible one. Ester product is ethyl butanoate.
Ethanol is an alcohol and butanoic acid is carboxylic acid. Ethanol, butanoic acid reacts when in the presence of sulfuric acid. It gives the ester, ethyl butanoate as the product.
Ethanol + butanoic acid reactions happens in considerable amount if only in the presence of concentrated sulfuric acid. This reaction is a reversible one. Ethanol and butanoic acid reaction form a pleasant smell due to formation of ester.
Butanol is oxidized to butanoic acid by following reagants. These are very strong oxidizing agents.
No. Ethanol reacts with butanoic acid in the presence of concentrated H2SO4 acid and give ester and water as products. If an acid reacts with a base, a salt and water are the products. But ester is not a salt. Therefore ethanol + butanoic acid reaction is not a acid - base reaction.
Butanoic acid is a carboxylic acid. If you want to prepare a carboxylic acid from an alcohol, it should be a primary alcohol. So butanoic acid has four carbon atoms. Then we know we want a primary alcohol which has four carbon atoms. Butanol is the primary alcohol which has four carbon atoms.
By heating with strong oxidizing agent, butanoic acid is oxidized to butanoic acid.