Diisopropylethylamine → HCID 178427593, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of Boc-(D)-Arg(Tos)-OH (1 g, 2.34 mmol) in CH2Cl2 (10 mL) was added DIEA (1 mL) at 0° C. To the clear solution was added Gly-OBn.eHCl (0.52 g, 2.58 mmol) and BOP (1.2 g, 2.8 mmol). The solution was stirred for 4 h at 0° C. Solvents were evaporated and residue was dissolved in a mixture of EtOAc (100 mL) and water (20 mL). The organic layer was washed with sat. NaHCO3 (10 mL), water (10 mL), 1N HCl (10 mL) and sat. NaCl (3×10 mL), dried with MgSO4, filtered and evaporated. The solid residue was purified by column chromatography on silica gel (EtOAc) to give 1.12 g of the title compound as a powder. ES-MS (M+H)+=576.3

Provenance & Evidence