Benzoylation is introduction of benzoyl group (C6H5CO−) by replacement of H− attached to 'O' or 'N' or to aromatic nucleus.
The −NH2 group of glycine reacts with benzoyl chloride to form benzoyl glycine also known as hippuric acid.
C6H5COCl+H2NCH2COOH→C6H5CO.NHCH2COOH+HCl