Proton sponge → HCID 68690847, compound

Participants

Reaction Steps

To a stirring solution of N-(t-butoxycarbonyl)-(R)-1,3,4,10b-tetrahydro-9-hydroxymethyl-7-trifluoromethyl-pyrazino[2,1-a]isoindol-6(2H)-one (30 mg, 0.08 mmol) and proton sponge (26 mg, 0.12 mmol) in dry CH2Cl2 (1.0 mL) was added trimethyloxonium tetrafluoroborate (11.5 mg, 0.08 mmol). The reaction was stir for 16 hr and then quenched with 1M aq. HCl. The reaction was extracted with EtOAc (3×10 mL). The organic layers were combined, dried over Na2SO4, and conc. in vacuo to a pink oil. The oil was purified by flash chromatography (silica gel, 0-40% EtOAc in hexanes) to yield 13 mg of the desired product as a colorless oil. MS (ESI) 401 (M+H).

Provenance & Evidence