Reference of 17702-83-9, These common heterocyclic compound, 17702-83-9, name is 2-(8-Bromooctyl)isoindoline-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.
step 1 8-Morpholin-4-yloctylamine To a solution of N-(8-bromooctyl)phthalimide (8.46 g, 25.0 mmol) in CH3CN (70 mL) at room temperature wag added morpholine (4.80 g, 55.0 mmol). After 18 h at this temperature, the reaction mixture was concentrated and then diluted with EtOAc (100 mL). The organic layer was washed with 10percent aq. Na2CO3 (3*30 mL), H2O (2*20 mL), and brine (2*20 mL) and then dried (Na2SO4). After concentration, the residue was purified by the flash chromatography (5 to 10percent MeOH/CH2Cl2 gradient) to afford the substituted morpholine intermediate. To this substituted morpholine intermediate (7.40 g, 21.5 mmol) in MeOH (70 mL) at room temperature was added hydrazine monohydrate (1.28 mL, 25.8 mmol) and the resulting mixture was heated to reflux. After 2 h at this temperature, the reaction was concentrated and then diluted with 1N HCl (100 mL). The mixture was stirred for 1 h, and the precipitate that formed during this time was filtered and washed with excess 0.5 N HCl. The filtrate was basified with 50percent aq. NaOH (~7 mL) and stirred about 15 min. This aqueous solution was extracted with CHCl3 (4*50 mL) and the combined organic layers were washed with H2O (3*50 mL) and brine (1*50 mL). The organic layer was then dried (Na2SO4) and concentrated to afford the product (4.16 g, 77percent) as an oil; 1H NMR (DMSO-d6) delta81.18-1.34 (m, 12H), 1.34-1.43 (m, 2H), 2.21 (t, J=7.0 Hz, 2H), 2.26-2.33 (m, 4H), 2.46-2.52 (m, 2H), 3.53 (t, J=4.6 Hz, 4H); IR (film) 3390, 2930, 2860, 2820, 2790, 2710, 2180, 1640, 1610, 1460, 1390, 1375, 1360, 1320, 1300, 1275, 1200, 1135, 1120, 1080, 1040, 1010, 900, 870, 815, 800, and 725 cm-1; mass spectrum [(+) APCI], m/z 215 (M+H)+.
The synthetic route of 17702-83-9 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Butera, John A.; Caufield, Craig E.; Graceffa, Russell F.; Greenfield, Alexander; Gundersen, Eric G.; Havran, Lisa Marie; Katz, Alan H.; Lennox, Joseph R.; Mayer, Scott C.; McDevitt, Robert E.; US6214877; (2001); B1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem