write the methods of preparation of amino acid.

Dear Nikulas,

Methods of preparation of amino acids:         

(i)            Elimination of α - haloacids.

(ii)          Gabriel phthalimide synthesis:

α - halogenated acid or ester combines with potassium phthalimide. Product on hydrolysis gives α - amino acid.

(iii) Knoop synthesis:

α - keto acid on treatment with NH₃ forms an imine which on catalytic reduction gives amino acid.

(iv) Strecker synthesis:

Aldehydes react with HCN and ammonia or NH₄CN and the product on hydrolysis yields α - aminoacids.

Some of the reactions given by amino acids are as follows:

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Dear Student,
Please find below the solution to your problem.
Methods of preparation of amino acids:
(i)Elimination of α - haloacids.

(ii)Gabriel phthalimide synthesis:α-halogenatedacid or ester combines with potassium phthalimide. Product on hydrolysis givesα - amino acid.

(iii)Knoop synthesis:α -keto acid on treatment with NH3forms an imine which on catalytic reduction gives amino acid.

Thanks and Regards