反应详情

To a 0.40 M solution of acetic acid (46 μL, 0.800 mmol) in EtOAc (2.00 mL, filtered through activated alumina) were added pentafluorophenol (162 mg, 0.880 mmol) and 1,3-dicyclohexylcarbodiimide (182 mg, 0.88 mmol). The reaction mixture was stirred for 12 h at rt at which time it was filtered (washing with EtOAc) and concentrated. Ester 19 was used immediately without further purification.

1. filtrationwas filtered
2. wash(washing with EtOAc)
3. concentrationconcentrated
4. customEster 19 was used immediately without further purification