Dimethylformamide → HCID 58753263, compound

Participants

Reaction Steps

Trans-2-(3-hydroxy-5-methylsulfonyl-4-propyloxyphenyl)-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran (242), 130 mg, 0.28 mmol) was dissolved in dry DMF (1.5 mL) and K2CO3 (58 mg, 0.42 mmol) was added to it. Stirred, at room temperature under argon, for 30 min and a solution of 241, made above, in 1.0 mL of dry DMF was added. The resulting reaction mixture was stirred at 70° C. overnight. The reaction mixture was diluted with methylene chloride (25 mL) and washed with water (25 mL). The water layer was extracted once with 25 mL of methylene chloride. The combined methylene chloride extracts were dried over magnesium sulfate and concentrated in vacuo to obtain trans-2-[3-methylsulfonyl-5-(4-phthalimido-but-2-ynyloxy)-4-propyloxyphenyl]-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran, 244, which was used without further purification. 1H-NMR (CDCl3) δ7.85 (2H, dd, J=5.3, 3.2 Hz), 7.73 (2H, dd, J=5.3, 3.2 Hz), 7.55 (1H, d, J=2.0 Hz), 7.32 (1H, d, J=2.0 Hz), 6.62 (2H, s), 5.16-5.21 (2H, m), 4.77 (2H, s), 4.49 (2H, s), 4.11 (2H, t, J=6.8 Hz), 3.89 (6H, s), 3.84 (3H, s), 3.24 (3H, s), 2.41-2.46 (2H, m), 1.80-2.01 (4H, m), 1.04 (3H, t, J=6.8 Hz).

Provenance & Evidence