Trifluoroacetic acid → 3-((5-(1H-indol-2-yl)oxazol-2-yl)amino)phenol

Participants

Reaction Steps

To a stirred solution of tert-butyl 2-(2-((3-hydroxyphenyl)amino)oxazol-5-yl)-1H-indole-1-carboxylate 22 (0.125 g, 0.319 mmol) in anhydrous CH2Cl2 (20 mL) was added 1:1 mixture of CH2Cl2:Trifluoroacetic acid (5 mL) at 0° C. Reaction was stirred for 1 hour at ambient temperature. It was quenched with aq. saturated NaHCO3 and CH2Cl2 layer was separated. After evaporation of solvent, crude product was purified using preparative-TLC to obtain 3-((5-(1H-indol-2-yl)oxazol-2-yl)amino)phenol 23 (0.027 g, 16% yield).

Provenance & Evidence