反应详情

At 0° C., to a stirred solution of 2′-(2-methoxyethoxymethoxy)-[1,1′;3′,1″]terphenyl-5′-carboxylic acid (1.72 g, 4.55 mmol) in THF (4.55 mL) was added 1,8-diazabicyclo[5.4.0]undec-7-ene. After 0.5 h, to the reaction was added iodomethane and the reaction was stirred for 16 h, eventually warming to ambient temperature. The reaction was filtered and the filtrate concentrated. The crude product was dissolved in EtOAc, washed sequentially with sat. aq. NaHCO3 (3×), with 1 N HCl (3×), brine (3×), dried (K2CO3) and concentrated. Purification on Biotage KP-Sil eluting with 20% acetone/hexane gave 1.641 g (92%) of the title compound as a yellow oil. 1H NMR (DMSO-d6) δ2.77-2.80 (m, 2H), 2.88-2.91 (m, 2H), 3.01 (s, 3H), 3.87 (s, 3H), 4.40 (s, 2H), 7.40-7.53 (m, 6H), 7.60-7.62 (m, 4H), 7.90 (s, 2H).

1. filtrationThe reaction was filtered
2. concentrationthe filtrate concentrated
3. dissolutionThe crude product was dissolved in EtOAc
4. washwashed sequentially with sat. aq. NaHCO3 (3×), with 1 N HCl (3×), brine (3×)
5. dry with materialdried (K2CO3)
6. concentrationconcentrated
7. customPurification on Biotage KP-Sil
8. washeluting with 20% acetone/hexane