1,1'-Carbonyldiimidazole → 3-Phthalimido-3-(4-butoxy-3-methoxyphenyl)propionamide

Participants

Reaction Steps

By following the procedure of Example 65 utilizing 3-phthalimido-3-(4-butoxy-3-methoxyphenyl)propionic acid and carbonyldiimidazole, there is obtained 0.742 g (74%) of crude product as a pale yellow powder. The crude product was recrystallized from ethyl acetate (16 mL) to afford 0.517 (52%) of 3-phthalimido-3-(4-butoxy-3-methoxyphenyl)propionamide as fine fluffy white needles: HPLC 99.1%; 1H NMR (DMSO-d6) δ7.95-7.75 (m, 4H, Ar), 7.54 (br s, 1H, CONH), 7.04 (s, 1H, Ar), 7.0-6.75 (m, 2H), 6.86 (br s, 1H, CONH), 5.67 (t, 1H, J=8 Hz), 3.90 (t, 2H, J=6 Hz), 3.73 (s, 3H), 3.20 (d, 1H, J=8 Hz, CH2CO), 1.8-1.55 (m, 2H) 1.5-1.3 (m, 2H), 0.91 (t, 3H, J=7 Hz); 13C NMR (DMSO-d6) δ171.2, 167.6, 148.8, 147.7, 134.5, 131.6, 131.2, 123.0, 119.4, 112.8, 111.4, 67.8, 55.5, 50.3, 36.9, 30.7, 18.6, 13.6.

Provenance & Evidence