1,2-Dichlorobenzene → HCID 117986066, compound

Participants

Reaction Steps

To a solution of 1-[(1R,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(4-ethoxy-2,3-difluoro-phenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octan-1-yl]ethanol 23p (530 mg, 0.67 mmol) in a methanol/tetrahydrofuran mixture (v/v=4/1, 10 mL) were added o-dichlorobenzene (0.4 mL, 3.5 mmol) and 10% Pd/C (212 mg, 0.2 mmol) at room temperature. The mixture was stirred at room temperature for 4 hours under H2 and filtered. The filtrate was concentrated in vacuo and the residue was purified by silica gel chromatography eluted with PE/EtOAc(v/v)=3/1 to give a few white solid. Then the solid was further purified by prep-HPLC to give the title compound 23 as a white solid (142 mg, 43%, HPLC: 97.3%). The compound was characterized by the following spectroscopic data: MS (ESI, pos. ion) m/z: 487.1 [M+H]+; and 1H NMR (600 MHz, CDCl3) δ(ppm): 7.43-7.36 (m, 1H), 7.33 (m, 2H), 6.72 (m, 1H), 6.60 (m, 1H), 4.25-4.17 (m, 1H), 4.03 (m, 4H), 3.95 (m, 1H), 3.87 (m, 1H), 3.75 (m, 3H), 1.42 (t, 3H), 1.27 (d, 3H).

Provenance & Evidence