Methanol → HCID 10273078, compound

Participants

Reaction Steps

To a suspension of 4-amino-2-(2,6-dioxo(3-piperidyl))isoindoline-1,3-dione (0.55 g, 2 mmol) in THF (30 ml) was added 3-chlorobenzoyl chloride (0.51 ml, 4 mmol). The mixture was heated to reflux for 18 hours. The reaction was cooled to room temperature, methanol (2 ml) was added, and the mixture stirred for 1 hour. The solvent was evaporated in vacuo leaving a solid which was slurried in diethyl ether (20 ml) and filtered to give 0.82 g (100%) of product as an off-white solid: mp 257-259° C.; 1H NMR (DMSO-d6) d 11.06 (s, 1H), 10.43 (s, 1H), 8.50 (d, J=8.4 Hz, 1H), 7.99-7.88 (m, 3H), 7.75-7.61 (m, 3H), 5.17 (dd, J=5.5 and 12.7 Hz, 1H), 2.99-2.84 (m, 1H), 2.67-2.49 (m, 2H), 2.12-2.07 (m, 1H); 13C NMR (DMSO-d6) d 172.36, 169.78, 169.36, 167.59, 166.39, 163.57, 135.99, 135.31, 133.59, 132.11, 131.33, 130.73, 127.07, 126.76, 125.78, 118.93, 118.55, 48.91, 30.77, 21.85; Anal. Calcd. For C20H14ClN3O5: C, 58.33; H, 3.43; N, 10.20. Found: C, 58.38; H, 3.23; N, 9.95.

Provenance & Evidence