An Unexpected Reaction of 2,3-Dimethyl-2,3-butanediol (a)Describe some green fea

Question

An Unexpected Reaction of 2,3-Dimethyl-2,3-butanediol

(a)Describe some green features of your synthesis, and any that aren't s'o green. the picture might help

(b) Write conclusion for this reaction at least minimum of 5 santances.

A. The name of the product compound is pinacalone. The reaction and reagent required for the reaction are given below HO OH 0 -H20 pinacol In IR spectrum, a strong IR band at around 1705-1725 cm1 corresponds to C-o group was seen as well as C-H streatching at 2850-2950 cm was also noticed. B. Common name of the starting material is Pinacol. The name of the reaction is pinacol-pinacalone rearrangment. C. Mechanism for the reaction H

Explanation / Answer

Answer:

Here we are doing the reaction in aqueous medium is a environmently benign solvent.

No need of application heat or any other external energies,so it is energy efficient process.

It is not so green synthesis due to the use of hazardous chemical that is H2SO4(Sulphuric acid)

Conclusion:

1.In pinacol-pinacolone rearrangement 1,2 diol is converted to carbonyl compound.

2.Protanatanation of one of the -OH gives carbocation.

3.If both -OH groups are not alike ,the oe which only gives the stable carbocation involves in protanation.

4.The alkyl group on adjacent carbon which is trans to the leaving group involves in migration.

5.if there is a chiral migrating groups retains its steriochemistry after migration.

6.It is a rearranement of carbon skeleton by the migration of alkyl group to the electron deficient carbon.

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