Abstract
Amides of Z- and Boc protected amino acids have been prepared by using p-toluenesulphonyl chloride (TsCI) for the activation of carboxyl group. The resulting mixed carboxylic-sulphonic anhydride intermediate was treated in situ with an excess of 25 percent ammonia solution. All the amino acid amides prepared were obtained as crystalline solids in good yield and purity. Keywords: Boc-AMINO ACID, TOLUENESULPHONYL, luteinizing harmone, selective tosylation, layer chromatography, stirred solution, anhydrous sodium sulphate
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