1,3-Propanediol → HCID 57049612, compound

Participants

Reaction Steps

To a solution of 3-(benzo-2,1,3-thiadiazole-4-sulfonyloxy)-5-methylphenol (645 mg, 2.0 mmol), as prepared in the preceding step, tri-n-butylphosphine (607 mg, 3.0 mmol) and 1,3-propanediol (760 mg, 10 mmol) in anhydrous tetrahydrofuran (20 mL) was added 1,1'-(azodicarbonyl)dipiperidine (757 mg, 3.0 mmol). The mixture was stirred at ambient temperature overnight. Hexane (30 mL) was added to the mixture, and the precipitates were removed by filtration. The filtrate was evaporated in vacuo, and the residue was purified by flash column chromatography (1:1 hexane/ethyl acetate) to give the title compound as a pale yellow oil (615 mg, 82%). 1H-NMR (300 MHz, CDCl3) δ 8.35 (d, J=8.7 Hz, 1H), 8.26 (d, J=7.1 Hz, 1H), 7.72 (t, J=8.8 Hz, 1H), 6.59 (s, 1H), 6.46 (s, 1H), 6.43 (s, 1H), 3.97 (t, J=6.0 Hz, 2H), 3.80 (t, J=6.0 Hz, 2H), 2.21 (s, 3H), 1,96 (m, 2H), 1.65 (br s, 1H).

Provenance & Evidence