Electric Literature of 3676-85-5, These common heterocyclic compound, 3676-85-5, name is 5-Aminoisoindoline-1,3-dione, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
Example 50 1-(7-(3,4-Dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)-N-(1,3-dioxoisoindolin-5-yl)piperidine-3-carboxamide Procedure: To a solution of 1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)piperidine-3-carboxylic acid (50 mg, 0.12 mmol) and 5-aminoisoindoline-1,3-dione (19 mg, 0.12 mmol) in pyridine (8 mL) was added POCl3 (0.3 mL, 3.23 mmol) at 0 C., the reaction mixture was stirred at room temperature for 4 hours, a sat.NaHCO3 solution was added slowly, the solvent was removed in vacuo, water (5 mL) and methanol (2 mL) were added. The precipitate was collected by filtration and washed with water (5 mL) and methanol (5 mL) to afford 1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)-N-(1,3-dioxoisoindolin-5-yl)piperidine-3-carboxamide (27 mg, 40.0%) as an orange solid. 1H NMR (300 MHz, DMSO): delta 11.20 (s, 1H), 10.59 (s, 1H), 9.64 (s, 1H), 8.83 (s, 1H), 8.13 (s, 1H), 7.86-7.73 (m, 2H), 7.63 (s, 1H), 7.38-7.29 (m, 1H), 6.78 (s, 1H), 4.77 (d, 1H, J=12.0 Hz), 4.62 (d, 1H, J=12.3 Hz), 3.66 (s, 3H), 3.61 (s, 3H), 3.16-2.94 (m, 2H), 2.60-2.55 (m, 1H), 2.04-2.01 (m, 1H), 1.76-1.72 (m, 2H), 1.52-1.41 (m, 1H). LC-MS: 560 [M+H]+, tR=1.49 min. HPLC: 99.49% at 214 nm, 99.47% at 254 nm, tR=5.33 min.
The synthetic route of 3676-85-5 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Hermann, Johannes Cornelius; Lowrie, JR., Lee Edwin; Lucas, Matthew C.; Luk, Kin-Chun Thomas; Padilla, Fernando; Wanner, Jutta; Xie, Wenwei; Zhang, Xiaohu; US2012/252777; (2012); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem