1,3-Propanediol → HCID 22722411, compound

Participants

Reaction Steps

To a solution of 5-methyl-3-(2-nitrophenylsulfonyloxy)phenol (1.1 g, 4.0 mmol), as prepared in the preceding step, tri-n-butylphosphine (1.22 g, 6.0 mmol) and 1,3-propanediol (1.52 g, 20 mmol) in anhydrous tetrahydrofuran (40 mL) was added 1,1'-(azodicarbonyl)dipiperidine (1.51 g, 6.0 mmol). The mixture was stirred at ambient temperature overnight. Hexane (60 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 (5% ethyl acetate in dichloromethane) to give the title compound as a pale yellow oil (1.05 g, 71%). 1H-NMR (300 MHz, CDCl3) δ 7.99 (d, J=7.7 Hz, 1H), 7.84 (m, 2H), 7.70 (m, 1H), 6.65 (s, 1H), 6.61 (s, 1H), 6.58 (s, 1H), 4.03 (t, J=6.0 Hz, 2H), 3.82 (t, J=5.9 Hz, 2H), 2.27 (s, 3H), 2.00 (t, J=6.0 Hz, 2H), 1.67 (br s, 1H).

Provenance & Evidence