Sodium Hydroxide → HCID 135611041, compound

Participants

Reaction Steps

A solution of 50% (w/w) NaOH (3.34 mL, 94 mmol) in CH3OH (34 mL) was added to 12 (2.14 g, 4.85 mmol) in CH3OH (70 mL) with ice bath cooling. The reaction mixture was stirred at room temperature for 18 h, and the bulk of the solvent was removed by rotary evaporation. The residue was treated with dilute NaCl (100 mL) and was extracted with ether (3×50 mL). The basic aqueous phase was cooled in ice, acidified with 2 N HCl to pH=2, and extracted with EtOAc (3×100 mL). After the EtOAc layers were washed with saturated NaCl (100 mL), glassware that was presoaked in 3 N HCl for 15 min was employed henceforth. After solvent removal by rotary evaporation, 1.88 g of 6 (97%) was obtained as an orange oil: [α]20+40.0% 1H NMR (D2O) δ 1.72 (s, 3H), 3.26 (d, 1H, J=11.2), 3.38 (s, 3H), 3.54-3.58 (m, 2H), 3.64-3.71 (m, 4H), 3.72-3.76 (m, 2H), 4.07-4.11 (m, 3H), 6.91-6.95 (m, 2

Provenance & Evidence