Day: March 15, 2022

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1532-84-9,Isoquinolin-1-amine,as a common compound, the synthetic route is as follows.

To a stirred solution of 1-aminoisoquinoline (2.5 g, 17.3 MMOL) in methylene chloride (50 mi) was added 3-bromopropyl isocyanate (3.13 g, 19 MMOL) dissolved in methylene chloride (15 ML). The mixture was allowed to stir at room temperature overnight. The mixture was partitioned between methylene chloride (20 ml) and aqueous saturated sodium bicarbonate (20 ml). The organic layer was separated and washed with brine, dried over sodium sulfate and concentrated to give 4.97 G of a brown solid (92%). This was used directly in the next step., 1532-84-9

Big data shows that 1532-84-9 is playing an increasingly important role.

Reference：
Patent; GENZYME CORPORATION; WO2004/63181; (2004); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

104704-40-7, 4-Bromo-1-methylisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Prepared by reacting 4-bromo-1-methyl-isoquinoline with lithium-triisopropoxy-2-pyridinyl-boronate in the presence of tetrakis(triphenylphosphine)palladium, triphenylphosphine, sodium carbonate and copper(I)iodide in 1,4-dioxane at reflux temperature. Rf value: 0.22 (silica gel, methylene chloride/methanol=95:5) Mass spectrum (ESI+): m/z=221 [M+H]+, 104704-40-7

The synthetic route of 104704-40-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Boehringer Ingelheim International GmbH; US2005/234108; (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.104704-40-7,4-Bromo-1-methylisoquinoline,as a common compound, the synthetic route is as follows.

Example No. 130Preparation of Compound No. 164[0427] A solution of 2, 8-dimethyl-2, 3, 4, 5-tetrahydro-lH-pyrido[4,3-b]indole (310 mg, 1.55 mmol), K3P04 (0.985 g, 4.65 mmol), Cul (29.4 mg, 0.15 mmol), L-proline (35.6 mg, 0.31 mmol) and 4-bromo-l-methylisoquinoline (0.520 g, 2.35 mmol) in dry DMF (3 mL) was stirred at RT for 10 min and then at 150 C for 16h. Water (50 mL) was added to the reaction mixture and then extracted with EtOAc (150 mL). The organic layer was washed with water (6×30 mL), dried over anhydrous sodium sulfate and evaporated to afford crude material, which was purified by reverse phase HPLC to yield 2,8-dimethyl-5-(l-methylisoquinolin-4- yl)-2,3,4,5-tetrahydro-lH-pyrido[4,3-b]indole as the TFA salt. 1H NMR (CD3OD, TFA salt) d (ppm): 8.6-8.74 (m, 2H), 8.0 (m, 2H), 7.41 (s, IH), 7.38 (bs, IH), 7.0 (d, IH), 6.8 (bs, IH), 4.8 (bs, IH), 4.5 (bs, IH), 3.8 (bs, IH), 3.6 (bs, IH), 3.3 (s, 3H), 3.18 (s, 3H), 3.0 (bs, IH), 2.82 (bs, IH), 2.41 (s, 3H)., 104704-40-7

104704-40-7 4-Bromo-1-methylisoquinoline 613570, aisoquinoline compound, is more and more widely used in various fields.

Reference：
Patent; MEDIVATION TECHNOLOGIES, INC.; CHAKRAVARTY, Sarvajit; HART, Barry, Patrick; JAIN, Rajendra, Parasmal; WO2011/103430; (2011); 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.

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