3-(3-(1,3-Dioxoisoindolin-2-yl)propyl)benzaldehyde → HCID 68938969, compound

Participants

Reaction Steps

2,6-Dimethoxybenzyltriphenylphosphonium bromide was coupled with phthalimide 29 following the method used in Example 44, except that the reaction was stirred overnight after warming up to room temperature. After concentration under reduced pressure, the residue was partitioned between EtOAc and water. The combined organics were washed with brine, dried over MgSO4 and concentrated under reduced pressure. Purification by flash chromatography (7 to 60% EtOAc-hexanes gradient) gave (E)-2-(3-(3-(2,6-dimethoxystyryl)phenyl)propyl)isoindoline-1,3-dione as a light yellow oil. Yield (0.317 g, 82%): NMR (400 MHz, DMSO-d6) δ 7.79-7.84 (m, 4H), 7.42 (d, J=17.2 Hz, 1H), 7.17-7.32 (m, 5H), 7.06-7.09 (m, 1H), 6.58 (d, J=8.4 Hz, 2H), 3.83 (s, 6H), 3.61 (t, J=7.2 Hz, 2H), 2.63 (t, J=8.0 Hz, 2H), 1.88-1.96 (m, 2H).

Provenance & Evidence