4-Aminophenylacetic acid → HCID 57977868, compound

Participants

Reaction Steps

A mixture of (S)-Pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester (F.W.=249.27, 1.5 g, 4.0 mmol), HATU (1.6 g, 3.9 mmol), and DIEA (0.7 mL, 4.97 mmol) in DMF (30 mL) was stirred at room temperature for 1 h. (4-Amino-phenyl)-acetic acid (FW=151.17, 0.5 g, 3.31 mmol) was added. The reaction mixture was stirred at room temperature for 20 h. The mixture was filtered and separated by reverse phase HPLC (0-100% of buffer B; buffer A: water containing 0.1% TFA; buffer B: MeCN containing 0.1% TFA). The combined fraction was evaporated to furnish the desired product (S)-2-(4-Carboxymethyl-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester.

Provenance & Evidence