Heterocyclic Building Blocks-Isoquinoline

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.119-65-3,Isoquinoline,as a common compound, the synthetic route is as follows.

General procedure: To an 8 mL dram vial was added iodobenzene diacetate (0.6 mmol, 1.5 equiv), and heteroarene(0.4 mmol, 1 eq.), anhydrous dichloroethane (1 mL), then chloride source (5 equiv). The solutionwas allowed to stir (1000 rpm) at 50 C for the indicated amount of time. After which the solutionwas washed with saturated sodium bicarbonate, followed by saturated sodium thiosulfate andconcentrated. The crude mixture was then purified by column chromatography.

As the paragraph descriping shows that 119-65-3 is playing an increasingly important role.

Reference£º
Article; Fosu, Stacy C.; Hambira, Chido M.; Chen, Andrew D.; Fuchs, James R.; Nagib, David A.; Chem; vol. 5; 2; (2019); p. 417 – 428;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.119-65-3,Isoquinoline,as a common compound, the synthetic route is as follows.

5-Bromo-8-nitroisoquinoline. Isoquinoline (15 ml; 128 mmol) was slowly added to a mechanically stirred solution of concentrated H2SO4 (130 ml) (Note 1) at -20 C., at such a speed that the temperature did not exceed +8 C. The reaction mixture was then re-cooled to -20 C., and solid N-bromosuccinimide (27.29 g; 153 mmol) (Note 2 and 3) was added at such a speed that the reaction temperature did not exceed -15 C. (Note 4). The reaction mixture was stirred at -20 C. until all isoquinoline was consumed (Note 5). Solid KNO3 (13 g; 128 mmol) was added in one portion, whereby the reaction temperature warmed up to -12 C. to -10 C. The reaction was stirred at -10 C. to -20 C. for 2 hours and then allowed to warm up to rt. The reaction mixture was poured onto 650 g of crushed ice and pH adjusted to 7.0 (Note 6) using 25% NH3 (aq.), while the temperature was kept below +30 C. The mixture was left for precipitation for 1 h at rt. The yellow precipitate was isolated by filtration, washed on the filter with H2O (3*500 ml) and then dried by suction followed by air drying to give 27.1 g crude product. (Note 7).

As the paragraph descriping shows that 119-65-3 is playing an increasingly important role.

Reference£º
Patent; NeuroSearch A/S; US6500954; (2002); B1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

486-73-7, Isoquinoline-1-carboxylic acid is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A. 1,2,3,4-Tetrahydro-1-isoquinolinecarboxylic acid A solution of 1-isoquinolinecarboxylic acid (1.67 g) in glacial acetic acid (25 ml,) was hydrogenated at 60 p.s.i. over PtO2 (270 mg). When the reaction was complete, the mixture was filtered through diatomaceous earth (Celite), washing the solid pad with MeOH, and the filtrate was concentrated to dryness. The resultant white solid was triturated with cold water and filtered to provide the title compound (775 mg).

486-73-7 Isoquinoline-1-carboxylic acid 68092, aisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; ProScript, Inc.; US5780454; (1998); A;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

23687-26-5, 6-Aminoisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Synthetic Example 84b 6-(4-Chlorobenzenesulfonylamino)-1-cyanoisoquinoline The compound obtained using 6-aminoisoquinoline (0.5 g, Synthesis, 733 (1975)) and 4-chlorobenzenesulfonyl chloride (0.88 g) in the same method as in Synthetic Example 1b was dissolved in chloroform (150 ml). Under ice-cooling, m-chloroperbenzoicacid (0.9 g) was added theterto, followed by stirring at room temperature overnight. The solvent was evaporated, and the resulting crystals were washed with diethyl ether, collected by filtration and dried, to give 6-(4-chlorobenzenesulfonylamino)isoquinoline-N-oxide (1.072 g).

The synthetic route of 23687-26-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Eisai Co., Ltd.; EP1258252; (2002); 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.23687-26-5,6-Aminoisoquinoline,as a common compound, the synthetic route is as follows.

Compound 7A (10.9 g, 25 mmol) at room temperature6-aminoisoquinoline (4.32 g, 30 mmol)And EDCI (6.68g, 35mmol)Add pyridine (100ml), nitrogen protection,Then DMAP (4-dimethylaminopyridine) (4.2 g, 35 mmol) was added,Reaction overnight,The reaction was monitored by TLC (DCM:MA=20:1) until the disappearance of starting compound 7A, evaporated to dryness under reduced pressure, 3 mol of acetic acid aqueous solution was adjusted to pH=4-5, extracted with DCM (100 ml*4), and combined to obtain compound 8. (11.02 g), yield 78percent; LC-MS (M+1) 566, purity: 97.4percent.

As the paragraph descriping shows that 23687-26-5 is playing an increasingly important role.

Reference£º
Patent; Shanghai Taoqin Bio-pharmaceutical Technology Co., Ltd.; Li Yu; (18 pag.)CN107434780; (2017); A;,
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Isoquinoline | C9H7N – PubChem

105627-79-0, Isoquinoline-5-sulfonyl chloride hydrochloride is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Reference Preparation Example Homopiperazine (3.413 g) was dissolved in tetrahydrofuran (57 ml) with stirring. After cooling the solution to -5 C, 5-isoquinolinesulfonyl chloride hydrochloride (3.00 g) was added while maintaining the intemal temperature at 10 C or less. The mixture was stirred at 5 C or less for four hours. The reaction mixture was allowed to stand to reach room temperature and filtered to remove insoluble matter. The filtrate was concentrated under reduced pressure, followed by the addition of ethyl acetate (57 ml), water (17 ml), and 3 N hydrochloric acid aqueous solution (6.4 ml). The mixture was separated into layers to obtain a water layer. After washing the water layer with ethyl acetate (7 ml), water (6 ml), ethyl acetate (57 ml), and 6 N sodium hydroxide aqueous solution (3 ml) were added to separate the mixture into layers and obtain an organic layer. The organic layer was concentrated under reduced pressure and the residue was dried under reduced pressure to obtain fasudil (1.36 g). The yield was 41%. The fasudil is processed by the method described in JP-A-9-71582 to obtain fasudil hydrochloride. Fasudil can also be obtained in the same manner using the solvents listed below instead of tetrahydrofuran used in the Reference Preparation Example at yields described in the parentheses. Acetone (22%), acetonitrile (30%), 1,2-dimethoxyethane (31%), 2-butanone (24%), anisole (34%), isopropyl ether (10%), ethyl acetate (38%), toluene (18%), etc. Concentration of the filtrate was unnecessary when anisole, isopropyl ether, ethyl acetate, and toluene were used as the solvent.

The synthetic route of 105627-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Asahi Kasei Pharma Corporation; EP1726306; (2006); 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.39989-39-4,7-Methoxyisoquinoline,as a common compound, the synthetic route is as follows.

TMPMgCl¡¤LiCl (1.0 M in THF/toluene; 5.65 mL, 5.65 mmol) was added dropwise at roomtemperature to a solution of 7-methoxyisoquinoline (600 mg, 3.77 mmol) in dry THF (11 mL).After 4 h the reaction mixture was cooled to 0C, a solution of iodine (1.43 g, 5.65 mmol) indry THF (6.65 mL) was added dropwise and the resulting mixture stirred while warming to room temperature over 1 h. Sat. aq. NH4Cl (6 mL) and sat. aq. Na2S2O3 (6 mL) were addedand the organic materials extracted using DCM (3 x 50 mL). The combined organic layerswere dried over Na2SO4 and concentrated in vacuo. The resulting crude product was purifiedby flash column chromatography (EtOAc/hexanes 1:9) to give 1-iodo-7-methoxyisoquinoline(S1) (469 mg, 1.64 mmol, 44%) as a yellowish solid.

The synthetic route of 39989-39-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Kraus, Yvonne; Glas, Carina; Melzer, Benedikt; Gao, Li; Heise, Constanze; Preusse, Monique; Ahlfeld, Julia; Bracher, Franz; Thorn-Seshold, Oliver; European Journal of Medicinal Chemistry; vol. 186; (2020);,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.3336-43-4,1-Chloroisoquinolin-4-ol,as a common compound, the synthetic route is as follows.

To a solution of l-chloro-4-hydroxyisoquinoline (1.Og, 5.6 mmol) in DMF (16mL), was added 6-chloronicotmonitrile (0.55g, 4.0mmol) and K2CO3 (1.65g, 11.9mmol). The reaction mixture was heated at 7O0C for 6.5h. Solvent was removed in vacuo and residue partitioned between EtOAc (10OmL), THF (10OmL) and water (6OmL). The organic phase was washed with water (2x60mL), IM NaOH (2x40mL), brine (4OmL) and dried (MgSO4). Solvent was removed in vacuo to give the title compound: RT = 3.66min; m/z (ES+) = 282.0 [M + H]+.

3336-43-4 1-Chloroisoquinolin-4-ol 4281882, aisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; PROSIDION LIMITED; WO2008/142454; (2008); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

1075-11-2, 6-Fluoroisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Dimethylsulfamoyl chloride (34; 0.144 mL, 1.34 mmol) was added to a solution of isoquinoline (5; 157 mg, 1.22 mmol) and 1H-indol-7-yl acetate (33; 213 mg, 1.22 mmol) in toluene (4 mL) at r.t. The mixture was concentrated to a thick but stirrable paste (1.5 mL), which was stirred at 50 C for 3 h. TLC and LCMS showed reaction was largely complete by this time. The mixture was diluted with EtOAc (40 mL), washed with H2O (40 mL) and sat. brine (20 mL), dried (Na2SO4), filtered and evaporated to dryness. The residue was purified by flash silica gel chromatography (loading in CH2Cl2) (eluent: gradient 20 to 50% EtOAc in heptane). Fractions containing the desired product were evaporated to afford the title compound 37a (208 mg, 42%) as a white solid

As the paragraph descriping shows that 1075-11-2 is playing an increasingly important role.

Reference£º
Article; Pearson, Stuart E.; Fillery, Shaun M.; Goldberg, Kristin; Demeritt, Julie E.; Eden, Jonathan; Finlayson, Jonathan; Patel, Anil; Synthesis; vol. 50; 24; (2018); p. 4963 – 4981;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

491-30-5, 1-Hydroxyisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 2.90 g, 19.07mMol of isocarbostyril and 14.40 g, 33.68mMol of phosphorus pentabromide were allowed to melt together at 140 C. The melt turned into a red liquid and after about 10 minutes the reaction mixture solidified and was cooled. The reaction mixture was crushed up and dumped into ice water. The resulting solid was filtered and air-dried. wt. 5.50 g, 96% yield, mp.=94-96. Rf=0.66 in 40% ethyl acetate in hexanes.

491-30-5 1-Hydroxyisoquinoline 10284, aisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; BAYER CORPORATION; EP1228063; (2009); B1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem