N-Butylpyrrolidinone as Alternative Solvent for Solid-Phase Peptide Synthesis

By means of a systematic approach, several green solvent candidates were tested for their feasibility to replace the reprotoxic dimethylformamide (DMF) as a solvent used in solid-phase peptide synthesis (SPPS). According to the results presented in this paper, it is clear that N-butylpyrrolidinone (NBP) is the best green solvent candidate to replace DMF in SPPS.