What does HgSO4 and H2SO4 do?
What is the function of the reagent HgSO4 and dilute H2SO4? – Quora. It is basically used to convert an Alkyne into a Ketone. The reaction is called Kucherov Reaction. The reaction can be understood by following mechanism.
What does nanh2 do in synthesis?
As a strong base, NaNH2 will deprotonate alkynes, alcohols, and a host of other functional groups with acidic protons such as esters and ketones. As a base, it’s often used in situations where a strong, small base is required.
What happens in oxymercuration Demercuration?
In an oxymercuration–demercuration reaction, an alkene is treated with mercury(II) acetate, Hg(OAc)2, and the product is treated with sodium borohydride. The net result is a Markovnikov addition product in which the OH group bonds to the more substituted carbon atom of the alkene.
What is the use of HgSO4?
Mercuric sulfate appears as odorless white granules or crystalline powder. Denser than water. It is toxic by inhalation and by ingestion. It is used in medicine, for gold and silver extraction, and to make other mercury compounds.
When propyne reacts with HgSO4 and H2SO4 the product is?
Acetone
The major product obtained by the treatment of propyne with aqueous H2SO4 in the presence of HgSO4 is Acetone.
Does alkene react with HgSO4?
Why Mercuric sulfate (HgSO4) is used with sulfuric acid? In alkene hydration, only dilute H2SO4 is used. But due to slow reaction rate of alkynes and H2SO4, we have to use a catalyst. Therefore we use HgSO4 as the catalyst to increase the reaction rate.
Is Oxymercuration syn or anti?
Stereochemically, oxymercuration is an anti addition. As illustrated by the second step, the nucleophile cannot attack the carbon from the same face as the mercury ion because of steric hindrance.
What is the name of the following reaction NaNH2?
Sodium amide, commonly called sodamide (systematic name sodium azanide), is the inorganic compound with the formula NaNH2.
What is the final product of Oxymercuration Demercuration reaction?
Study Notes. Oxymercuration is the reaction of an alkene with mercury(II) acetate in aqueous THF, followed by reduction with sodium borohydride. The final product is an alcohol.
What happens when H2SO4 reacts with HgSO4 for hydration?
Concentrated H 2 SO 4 is used to dehydrate alcohols to produce alkenes. Therfore dilute H 2 SO 4 is used with HgSO 4 for hydration. What happens when propyne reacts with water in the presence of H 2 SO 4 /HgSO 4 Propyne is hydrolyzed to give propanone.
Why do we use HgSO4 as a catalyst in alkene hydration?
In alkene hydration, only dilute H 2 SO 4 is used. But due to slow reaction rate of alkynes and H 2 SO 4, we have to use a catalyst. Therefore we use HgSO 4 as the catalyst to increase the reaction rate. Products of alkyne with HgSO 4 and H 2 SO 4 reaction
What happens when amines react with esters?
How about reactions between amines and esters. Here, the reaction is accelerated by heating it moderately. Notice that a stronger base (amine) is used up and a weaker base (alcohol) is produced. Notice also that before the alcohol (leaving group) portion of the ester departs, it picks up an H +…
What is the reaction between ethyne and propyne and H2SO4?
Ethyne, dilute H 2 SO 4 and HgSO 4 react to give ethanal. This is the only reaction giving an aldehyde by the reaction of alkyne hydration. Ethyne is symmetrical and we do not need the Morkovnikv’s rule to find the addition places. Propyne, dilute H 2 SO 4 and HgSO 4 react to give propanone. Propanone is a ketone compound.