Water → 3-(1-hydroxyethyl)-4-(morpholinomethyl)-1H-isochromen-1-one

Participants

Reaction Steps

3-(1-((tert-butyldimethylsilyl)oxy)ethyl)-4-(morpholinomethyl)-1H-isochromen-1-one (Intermediate B59.3, 0.203 g, 0.503 mmol) was dissolved in THF (7 mL); TBAF (1.0 M solution in THF, 0.33 ml, 0.33 mmol) was added drop-wise and the resulting mixture was stirred at room temperature for 2 hrs. Water (10 ml) was added and the mixture was extracted twice with DCM; the combined organic layers were dried over sodium sulfate and evaporated to dryness. The crude was purified by reverse phase flash chromatography on C18 Biotage cartridge ((H2O:CH3CN=95:5 to 80:20, with 0.1% HCOOH) to afford the title compound (0.145 g). The product was used in the next step without further purifications.

Provenance & Evidence