18-Crown-6 → HCID 90411955, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of product of Example 1E (250 mg, 0.573 mmol) in toluene (5 mL) was added potassium tert-butoxide (161 mg, 1.434 mmol) followed by 18-crown-6 (15 mg, 0.057 mmol) and the mixture was heated at 65° C. for 12 hours. The mixture was dissolved in ethyl acetate (25 mL), washed with water and brine, and dried over anhydrous sodium sulfate. Filtration followed by concentration of the filtrate afforded crude product which was purified by column chromatography (silica gel, 40% ethyl acetate in hexane) to afford the title compound. LCMS: 336.0 (M+H-Boc)+.

Provenance & Evidence