Cesium carbonate → HCID 25013658, compound

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Reaction Steps

The 1[4-(methylsulfonyl)phenyl]-4,4′-bipiperidine (70 mg, 0.22 mmol) and cesium carbonate (212 mg, 0.65 mmol) were slurried in NMP (0.43 ml) and the Chlorobenzoxazole (20.3 mmol) added. The mixture was stirred at 120 C overnight. The slurry was diluted with 15% saturated sodium bicarbonate:water (40 ml) and extracted with DCM (3×25 ml). The combined organic fraction was washed with brine, dried over magnesium sulfate, filtered, and the volatiles removed in vac. The crude material was purified by chromatography on silica gel with 5% acetone:DCM to yield the titled compound. LRMS calc: 478.1 obs: 478.8, 480.8 (M+H).

Provenance & Evidence