Lithium Hydroxide → HCID 57978223, compound

Participants

Reaction Steps

Lithium hydroxide solution (1M in water, 16.2 mL, 16.2 mmol) was added to a solution of methyl (3-{2-[((2R)-2-[4-(benzyloxy)-3-(hydroxymethyl)phenyl]-2-{[tert-butyl(dimethyl)silyl]oxy}ethyl)amino]-2-methylpropyl}phenyl)acetate (preparation 147), (4.80 g, 8.1 mmol) in tetrahydrofuran (49 mL) and methanol (17 mL) and the mixture was stirred at room temperature for 18 hours. The reaction mixture was then concentrated in vacuo and the residue was diluted with water and acidified to pH 7 with 1M hydrochloric acid. The resulting precipitate was filtered off and washed with water to afford the title compound as a pale yellow solid in 94% yield, 4.37 g 1H NMR (400 MHz, DMSO-d6) δ: 7.45-7.38 (6H, m), 7.31 (2H, m), 7.13 (1H, m) 7.02 (3H, m), 5.04 (3H, m), 4.52 (2H, d), 3.52 (2H, d), 2.43 (2H, d), 3.37 (2H, d), 1.24 (6H, m), 0.78 (9H, s), 0.02 (3H, s), -0.92 (3H, s) ppm; LRMS ESI m/z 659 [M+H]+

Provenance & Evidence