Diisopropylethylamine → HCID 58746524, compound

Participants

Reaction Steps

2,2-Difluoropropanoic acid (2.31 mg, 0.0210 mmol) in DMF (1.00 mL) was treated with benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (9.97 mg, 0.0225 mmol). The solution was stirred at ambient temperature for 5 minutes. Methyl 2-[5-((2S)-2-amino-3-[4-(1,1-dioxido-3-oxoisothiazolidin-5-yl)-3-fluorophenyl]-propanoylamino)pentyl]oxy-6-hydroxybenzoate trifluoroacetate (10.0 mg, 0.0150 mmol) in DMF (1.00 mL) was added followed by N,N-diisopropylethylamine (13.1 μL, 0.0751 mmol). The solution stirred at rt for 2 h. The product was directly purified by preparative LCMS to afford product as a white solid (7.1 mg, 73%). LCMS found for C28H33F3N3O9S (M+H)+: m/z=644.

Provenance & Evidence