Sodium hydrosulfide hydrate → HCID 178470127, compound

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Reaction Steps

Compound 14 (1.6 g, 2.93 mmol) is dissolved in DMF (40 mL) under an atmosphere of argon. Sodium hydrosulfide hydrate crystals (Aldrich, 72.6% by titration, 330 mg, 5.88 mmol) are added to this solution. The resulting mixture is sparged slowly with argon for 30 min. The progress of the reaction is monitored by HPLC-MS, and judged to be complete (≦2% of 14 remains) after 5 h. Excess sodium hydrosulfide is quenched upon addition of aq. HCl (4.5 mL, 4 N). The resulting orange solution (pH ˜2) is sparged with argon (30 min) to remove the generated hydrogen sulfide. DMF is removed under reduced pressure to give orange oil.

Provenance & Evidence