Month: February 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

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

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.

EXAMPLE 6 2-[(1,1′-Biphenyl)-4-yl]-imidazo[2,1-a]isoquinoline A solution of 4.32 g. (0.03 mole) of 1-amino-isoquinoline and 8.25 g. (0.03 mole) of [(1,1′-biphenyl)-4-yl]-bromomethyl-ketone in 100 ml. of chloroform was heated on a boiling water bath for about 10 minutes until a precipitate separated. The solvent was distilled off at atmospheric pressure and the residue was heated under vacuum for 30 minutes at 100 C. It was subsequently taken up with 50 ml of water and the resulting solution was made alkaline by means of 70 ml. of aqueous 10% sodium hydroxide. After extracting with 500 ml. of methylene chloride and evaporating the solvent, a residue was obtained which was re-crystallized from ethylene glycol monomethylether. Yield 3.0 g. M.p. 221-22 C., 1532-84-9

As the paragraph descriping shows that 1532-84-9 is playing an increasingly important role.

Reference：
Patent; Gruppo Lepetit S.p.A.; US4275066; (1981); A;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

1532-84-9, Isoquinolin-1-amine is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 6 A heterogenous mixture containing 14.4 g of 1-isoquinolinamine (0.1 m) and 14.12 g of dihydro-3-[(dimethylamino)methylene]-2(3H)-furanone was heated to 200 C. for 4 hours to yield a homogenous yellow orange solution which solidified upon cooling to ambient temperature. The solidified reaction mixture was titurated with methanol and ethyl acetate to yield 3-(2-hydroxyethyl)-4H-pyrimido[2,1-a]isoquinolin-4-one as a tan solid (18.0 g; 75% yield) of the formula STR26 having a melting point of 185.2-187.0 C. and the following elemental analysis: C14 H12 N2 O2 (MW=240.25): Calculated: C, 69.98; H, 5.04; N, 11.66. Found: C, 69.87; H, 5.00; N, 11.52., 1532-84-9

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

Reference：
Patent; G. D. Searle & Co.; US4661592; (1987); A;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem