HCID 11475844, compound → HCID 11450791, compound

Participants

Reaction Steps

Under N2-atmosphere, methyl tert-butyl ether (MTBE, 80 mL) was added to LiAlH4 (0.67 g, 17.65 mmol) and the suspension was stirred under cooling with an ice-water bath. A solution of 209i (3.0 g, 7.03 mmol) in MTBE (20 mL) was added dropwise, followed by additional MTBE (40 mL). After 2 h at 0° C., the reaction mixture was carefully quenched by addition of ethyl acetate (8 mL) and allowed to warm to room temperature overnight. The mixture was cooled with an ice-water bath and carefully hydrolyzed by addition of crushed ice (15 g) and water (15 mL). The pH was adjusted to 1 by addition of 2 N aqueous sulfuric acid (28 mL) and the solution was stirred at room temperature for 15 min. The layers were separated and the aqueous layer was extracted with MTBE (40 mL). The combined organic layers were washed with deionized water (50 mL), saturated NaHCO3 solution (40 mL), and brine (40 mL), dried over anhydrous MgSO4, concentrated in vacuo and dried in high vacuo. The crude product (2.65 g) was purified by recrystallization from hot CH2Cl2 (20 mL). The crystals were filtered, washed with ice-cold CH2Cl2 (20 mL) and dried in high vacuo to furnish 211i (1.59 g, 66%) as a white solid. Mp 75-77° C. 1H NMR (CDCl3): δ (ppm): 3.57 (m, 1 H), 3.30 (s, 4 H), 1.72 (br, 2 H), 1.50-1.16 (m, 25 H), 0.85 (s, 12 H). 13C NMR (CDCl3): δ (ppm): 72.09, 38.79, 37.61, 35.21, 30.70, 29.85, 25.78, 24.06, 23.92. HRMS (LSIMS, gly): Calcd for C21H45O3 (MEP): 345.3369, found: 345.3364. HPLC: 95.0% pure.

Provenance & Evidence