Day: March 3, 2022

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.223671-15-6,7-Bromoisoquinolin-1-ol,as a common compound, the synthetic route is as follows.

A suspension [OF 7-BROMO-1-HYDROXYISOQUINOLINE] (7.02g, 28. [2MMOL)] in dimethylformamide [(75ML)] was treated with 4-bromomethylbenzoic acid tert- butyl ester (12.5g, 36.7mmol) and cesium carbonate [(11.] 94g, 36.7mmol), then stirred overnight at room temperature. The dimethylformamide was evaporated in vacuo, the residue diluted with ethyl acetate, washed with IN HC1, the organic portion washed with brine, dried over [MGS04] and evaporated to dryness. The residue was triturated with hot hexanes/ethyl acetate, cooled to room temperature, and the solid collected by filtration and dried to give 8.77g of the product as white crystals (75.7% yield). [1H-NMR] [(CDC13)] ; d 8.58 (d, 1H), 7.95-7. 93 (d, 2H), 7.73-7. 71 (dd, 1H), 7.39- 7.32 (m, [3H),] 7.07-7. 05 (d, [1H),] 6.46-6. 44 (d, 1H), 5.24 (s, [2H),] 1.57 (s, 9H). MS: [M+ +1] = 414.0/416. 0 Da

223671-15-6, As the paragraph descriping shows that 223671-15-6 is playing an increasingly important role.

Reference：
Patent; WARNER-LAMBERT COMPANY LLC; WO2004/14379; (2004); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

1242157-15-8, 6-Bromo-8-fluoro-3,4-dihydroisoquinolin-1(2H)-one is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1242157-15-8, Step 5: To a mixture of 144e (24.0 g, 98.3 mmol) in CH3CN (300 mL) was added (Boc)20 (25.75 g, 118.0 mmol) and DMAP (24.0 g, 196.7 mmol) in one portion at RT. See Figure 3. The mixture was stirred at room temperature for lOh. The mixture was poured into ice-water (w/w = 1/1) (150 mL) and stirred for 20 min. The aqueous phase was extracted with EtOAc (400 mL x 3). The combined organic phase was washed with saturated critic acid (100 mL x 2), sat. aq. NaHCC^ solution (100 mL), brine (200 mL x 2), dried with anhydrous sodium sulfate, filtered, and concentrated under reduced pressure to give crude ieri-butyl 6-bromo-8- fluoro-l-oxo-3,4-dihydroisoquinoline-2(lH)-carboxylate 144f (36 g, 106%). *H NMR (400 MHz, CDCI3) delta 7.24-7.28 (m, 2H), 3.94-3.97 (m, 2H), 2.95-2.99 (m, 2H), 1.59 (s, 9 H).

1242157-15-8 6-Bromo-8-fluoro-3,4-dihydroisoquinolin-1(2H)-one 59473776, aisoquinoline compound, is more and more widely used in various fields.

Reference：
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; CRAWFORD, James John; LEE, Wendy; YOUNG, Wendy B.; WO2015/949; (2015); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.223671-15-6,7-Bromoisoquinolin-1-ol,as a common compound, the synthetic route is as follows.

Example 5; Synthesis of (109); Step A; Synthesis of (110); [0186] A mixture of 7-bromo-1-hydroxyisoquinoline (1 g, 4.47 mmol) and phosphorus oxychloride (20 mL) was heated at reflux for 20 min, cooled to room temperature, and concentrated in vacuo. The residue was treated with ice (100 g) and adjusted to pH 7 with 0.5M aqueous NaOH. The resulting mixture was extracted with EtOAc. The combined organic phases were washed with brine, dried over MgS04, and concentrated. The residue was crystallized from EtOAc/hexane to provide 110 (865 mg, 80%) as an off-white powder., 223671-15-6

223671-15-6 7-Bromoisoquinolin-1-ol 11276133, aisoquinoline compound, is more and more widely used in various fields.

Reference：
Patent; AMPHORA DISCOVERY CORPORATION; WO2005/120509; (2005); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1242157-15-8,6-Bromo-8-fluoro-3,4-dihydroisoquinolin-1(2H)-one,as a common compound, the synthetic route is as follows.

1242157-15-8, To a solution of 6-bromo-8-fluoro-3,4-dihydro-2H-isoquinolin-l-one (CAS 1242157-15-8; 200 mg, 0.82 mmol) in DMAC (4.0 mL) are added methylamine hydrochloride (CAS 593-51-1; 166 mg, 2.46 mmol) and DIPEA (856 pL, 4.92 mmol). The vial is sealed and the mixture is stirred at 100 C for 2 days. The reaction medium is quenched with water and precipitation occurred. The mixture is stirred for 10 min and then filtered. The solid is rinsed with water and is dried under reduced pressure overnight to afford the expected 6-bromo-8-(methylamino)-3,4-dihydro-2H-isoquinolin-l-one. LCMS: MW (calcd): 255.1; m/z MW (obsd): 255.1/257.1 (M+H)

1242157-15-8 6-Bromo-8-fluoro-3,4-dihydroisoquinolin-1(2H)-one 59473776, aisoquinoline compound, is more and more widely used in various fields.

Reference：
Patent; GALAPAGOS NV; DESROY, Nicolas; JONCOUR, Agnes, Marie; PEIXOTO, Christophe; TEMAL-LAIB, Taoues; TIRERA, Amynata; BUCHER, Denis; AMANTINI, David; DE VOS, Steve, Irma, Joel; BRYS, Reginald, Christophe, Xavier; (396 pag.)WO2019/238424; (2019); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1215767-89-7,5-Bromo-1,3-dichloroisoquinoline,as a common compound, the synthetic route is as follows.

Step B. 5-Bromo-3-cMoro-l-methoxyisoqmnolme20 A mixture of 5-bromo-l,3-dichloroisoquinoline (580 mg, 2.1 mmol) and NaOMe (0.5 M in MeOH, 5.0 mL, 2.5 mmol) was heated at 7O0C for one hour. The mixture was poured into water then extracted with EtOAc. The organic layer was dried over Na2S O4, filtered, then concentrated to afford the title compound: 1H NMR (500 MHz, CDCl3): delta 8.23 (d, J = 9.0 Hz, 1 H), 7.96 (d, J – 7.5 Hz, 1 H); 7.65 (s, 1 H), 7.39 (t, J = 8.5 Hz, 1 H), 4.20 (s, 3 H). LC6: 3.8625 min. (M+H) 272. MRL DOB-00, 1215767-89-7

As the paragraph descriping shows that 1215767-89-7 is playing an increasingly important role.

Reference：
Patent; MERCK SHARP & DOHME CORP.; LIN, Songnian; STEVENSON, Christian, P.; PARMEE, Emma, R.; XU, Libo; LIAO, Xibin; METZGER, Edward; LIANG, Rui; ZHANG, Fengqi; STELMACH, John, E.; WO2010/30722; (2010); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem