Heterocyclic Building Blocks-Isoquinoline

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.34784-07-1,8-Chloroisoquinoline,as a common compound, the synthetic route is as follows.

20a) 1, 8-DICHLORO-ISOQUINOLINE To a solution of 8-chloro-isoquinoline (J. Org. Chem. 1977,42 (19), 3208-9.) (11 G, 54 MMOL) in CH2CI2 (200 mL) is added MCPBA (25 g, 112 MMOL) in several portions. After stirring for 3 hours, ether (400 mL) is added, followed by addition of hexanes (1 L). Solution stirred overnight and conc in vacuo, ether (200 mL) and hexanes (400 mL) is added, stirred overnight. The ppt is filtered, air dried and mixed with 20 g of POS and toluene (150 mL). The solution is heated to reflux for 3 h, neutralized with NAHCO3. Extracted the solution with CH2CI2. Organic layer then dried with sodium sulfate and conc in vacuo, yield 8 g (72%) of 1, 8-Dichloro-isoquinoline. MS: 198

34784-07-1, The synthetic route of 34784-07-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; NOVARTIS AG; NOVARTIS PHARMA GMBH; WO2005/28444; (2005); A1;,
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34784-07-1, 8-Chloroisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 2: 8-chloro-5-nitroisoquinolineTo a solution of 8-chloroisoquinoline (1 mmol) in concentrated sulfuric acid at 0 0C was added potassium nitrate (1.1 mmol) .The reaction mixture was warmed to room temperature and stirred at room temperature for 5 hours. The reaction mixture was basified .Solid precipitated was column purified to afford a pale yellow solid.1H NMR (DMSO- d6): delta /77.76 – 7.79 ( IH, d , J = 8.4 Hz ); 8.48 – 8.51 ( IH, d , J = 8.4 Hz ); 8.53 – 8.55 ( IH, d , J = 6 Hz ); 8.86 – 8.88 ( IH, d , J = 6.3 Hz ); 9.84 ( IH , s )

34784-07-1, As the paragraph descriping shows that 34784-07-1 is playing an increasingly important role.

Reference£º
Patent; GLENMARK PHARMACEUTICALS S.A.; WO2007/42906; (2007); A1;,
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34784-04-8, 5-Bromoisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 57B 5-bromo-8-nitroisoquinoline The diethyl ether solution from Example 57A was treated with potassium nitrate (10.1 g, 100 mmol). After stirring for one hour, The mixture was poured onto ice and neutralized with concentrated ammonium hydroxide (300 ml). The crude product was collected by filtration, dried, and recrystalization from methanol to provide the title compound (8.83 g).

34784-04-8, The synthetic route of 34784-04-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Lee, Chih-Hung; Bayburt, Erol K.; DiDomenico JR., Stanley; Drizin, Irene; Gomtsyan, Arthur R.; Koenig, John R.; Perner, Richard J.; Schmidt JR., Robert G.; Turner, Sean C.; White, Tammie K.; Zheng, Guo Zhu; US2003/158188; (2003); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6624-49-3,Isoquinoline-3-carboxylic acid,as a common compound, the synthetic route is as follows.

General procedure: To the resin 13 (560 mg) in DMF (2.5 mL) were added a solutionof the appropriate Fmoc-protected amino acid (see Tables 1?3)(0.3 M), PyBOP (0.3 M) and HOBt (0.3 M) in dry DMF (4.2 mL). Thesuspensions were stirred for 3 min and then DIPEA (0.6 M) wasadded. The suspensions were stirred for 3 h under an argon atmosphereat rt. The resins were washed successively with DCM(150 mL), MeOH (120 mL), DCM (75 mL) and dried overnight undervacuum to give resins 14, each bearing an appropriate Fmoc-protectedamino acid. To the resins 14 (161 mg, 0.13 mmol) wereadded a solution of piperidine (20percent, v/v) in DCM (2.1 mL) and themixtures were stirred for 1 h at rt. After filtration, the resins werewashed successively with DCM (50 mL), MeOH (45 mL), DCM(25 mL) and dried under vacuum to give resins 15. Portions(65 mg) of resins 15 were placed in reactor wells (12 mL) of anautomated synthesizer reaction block (40-well format) (AdvancedChemTech). To each well was added a solution of appropriate carboxylicacid (see Tables 1?3) (0.3 M), PyBOP (0.3 M) and HOBt 6-Cl(0.3 M) and DIPEA (0.6 M) in dry DMF (2 mL). The suspensionswere vortexed at 300 rpm over a period of 5 h under an argonatmosphere. The wells were then filtered to remove the reactivesolution from the resins 16 and washed successively with THF,DCM, MeOH and DCM., 6624-49-3

Big data shows that 6624-49-3 is playing an increasingly important role.

Reference£º
Article; Talbot, Amelie; Maltais, Rene; Kenmogne, Lucie Carolle; Roy, Jenny; Poirier, Donald; Steroids; vol. 107; (2016); p. 55 – 64;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.891785-28-7,6-Bromoisoquinolin-3-amine,as a common compound, the synthetic route is as follows.

891785-28-7, Step 1 To a solution of 6-bromoisoquinolin-3-amine (XX)(3.0 g, 13.45 mmol)and 2-((1-(tert-butoxycarbonyl)piperidin-4-yl)oxy)isonicotinic acid (XII)(10.62 g, 32.94 mmol)in DCE was added DMAP (1.64 g, 13.45 mmol), DIPEA (7.03 mL, 40.35 mmol), HATU (12.32 g, 32.4 mmol)to DCE (67.2 mL)stirred at 75 C. for 16 hours. The solvent was removed under vacuum and putified by silica gel (40 g)using 0 to 50% EtOAc/hexanes to produce tert-butyl 4-((4-((6-bromoisoquinolin-3-yl)carbamoyl)pyridin-2-yl)oxy)piperidine-1-carboxylate (XLIV)as an off-white solid (4.37 g, 8.29 mmol, 61.6% yield). ESIMS found for C25H27BrN4O4 m/z 426.1 (M-Boc).

As the paragraph descriping shows that 891785-28-7 is playing an increasingly important role.

Reference£º
Patent; Samumed, LLC; KC, Sunil Kumar; Mak, Chi Ching; Eastman, Brian Walter; Cao, Jianguo; Bollu, Venkataiah; Mittapalli, Gopi Kumar; Chiruta, Chandramouli; (218 pag.)US2017/313682; (2017); A1;,
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23687-26-5, 6-Aminoisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

K3P04 (0.449 g, 2.117 mmol), Pd2(dba)3 (0.040 g 0.0441 mmol) and Xantphos (0.043 g, 0.0735 mmol) were added to a solution of intermediate 16 (0.153 g, 0.809 mmol) in THF (4 mL) while nitrogen was bubbling through the mixture. After 10 min, isoquinolin-6-amine (0.106 g, 0.735 mmol) was added and the mixture was stirred at rt for 10 min. Then, the mixture was heated at 100 ¡ãC for 16 h. The mixture was washed with aq. sat. NaHC03 and extracted with EtOAc. The combined org layers were dried over MgSC , filtered and the solvent was evaporated in vacuo. The crude product was purified by flash column chromatography; (silica; EtOAc in Heptane, 0/100 to 35/65). The desired fractions were collected and concentrated in vacuo. The residue was dissolved in DCM, HC1 (5 N in 2-propanol) was added and the mixture was concentrated in vacuo. The residue was triturated with DIPE and filtered to yield compound 10 as a yellow solid (0.147 g, 47percent). ‘H NMR (300 MHz, DMSO-d6) delta ppm 2.00 – 2.23 (m, 2 H) 4.16 (t, J=6.2 Hz, 2 H) 4.63 (dt, J=47.3, 5.8 Hz, 2 H) 7.18 (d, J=8.9 Hz, 1 H) 7.51 (dd, J=8.9, 3.0 Hz, 1 H) 7.91 (dd, J=9.2, 1.4 Hz, 1 H) 8.07 (d, J=6.7 Hz, 1 H) 8.13 (d, J=2.7 Hz, 1 H) 8.28 (d, J=9.1 Hz, 1 H) 8.34 (d, J=6.6 Hz, 1 H) 8.63 (s, 1 H) 9.41 (s, 1 H) 10.44 (s, 1 H), 23687-26-5

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

Reference£º
Patent; JANSSEN PHARMACEUTICA NV; ANDRES-GIL, Jose, Ignacio; BORMANS, Guy, Maurits, R.; DECLERCQ, Lieven, Denis, Herwig; FIERENS, Katleen; LEENAERTS, Joseph, Elisabeth; MOECHARS, Diederik, Willem, Elisabeth; ROMBOUTS, Frederik, Jan, Rita; KOLB, Hartmuth; ZHANG, Wei; (67 pag.)WO2018/15307; (2018); A1;,
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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.

Example 7 Preparation of (R)-tert-butyl 2-(isoquinolin-6-ylamino)-2-oxo-1-phenylethyl(methyl)carbamate (E7) To (R)-2-(tert-butoxycarbonyl(methyl)amino)-2-phenylacetate (E6) in DMF was added EDC, DMAP and 6-aminoisoquinoline. This mixture was stirred for 4 hours and the reaction was washed with NaHCO3 (sat), extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, Hexanes/EtOAc) gave pure (R)-tert-butyl 2-(isoquinolin-6-ylamino)-2-oxo-1-phenylethyl(methyl)carbamate (E7)., 23687-26-5

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

Reference£º
Patent; Aerie Pharmaceuticals, Inc.; US2009/186917; (2009); A1;,
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Isoquinoline | C9H7N – PubChem

3336-43-4, 1-Chloroisoquinolin-4-ol is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1: Preparation of 1-chloro-4-methoxyisoquinoline To a solution of 1-chloroisoquinolin-4-ol (5.0 g, 27.8 mmol) in acetonitrile (50 mL) was added TMS-diazomethane (12.73 g, 111.2 mmol) at 0 C. The reaction mixture was allowed to come to room temperature and stirred for 2 h. Solvent was evaporated under reduced pressure to get crude compound. The crude compound was purified by silica gel chromatography to get 1-chloro-4-methoxyisoquinoline (2.5 g, 46.4%) as off-white solid. 1H NMR (400 MHz, CD3OD): delta ppm 8.29-8.17 (m, 2H), 7.97 (s, 1H), 7.91-7.82 (m, 2H), 4.05 (s, 3H); MS: MS m/z 194.7 (M++1)., 3336-43-4

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

Reference£º
Patent; Bristol-Myers Squibb Company; Rajamani, Ramkumar; Renduchintala, Kishore V.; Sarkunam, Kandhasamy; Nagalakshmi, Pulicharla; Meanwell, Nicholas A.; Scola, Paul Michael; US2013/142754; (2013); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.34784-02-6,3-Bromoisoquinoline,as a common compound, the synthetic route is as follows.

General procedure: A suspension of intermediate 15(104.0 mg, 0.4 mmol), 7-bromoquinoline (124.8 mg, 0.6 mmol), t-BuONa (96.0 mg, 1.0 mmol), Pd2(dba)3 (18.0 mg, 0.019 mmol) andX-phos (9.6 mg, 0.02 mmol) in PhMe (2.8 ml) was degassed under astream of nitrogen over 10 min. The mixture was heated to 110 Cand stirred overnight. The resulting mixturewas filtered off and thesolution was concentrated under vacuum. The crude product waspurified by column chromatography on silica using a solvent of 60%ethyl acetate in hexanes. Compound 3l was obtained as a lightgreen solid (Yield: 60.0 mg, 38.8%).

34784-02-6, The synthetic route of 34784-02-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Yu, Jiang; Zhou, Peiting; Hu, Mingxing; Yang, Liuqing; Yan, Guoyi; Xu, Ruixue; Deng, Yufang; Li, Xinghai; Chen, Yuanwei; European Journal of Medicinal Chemistry; vol. 182; (2019);,
Isoquinoline – Wikipedia
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.34784-04-8,5-Bromoisoquinoline,as a common compound, the synthetic route is as follows.

Commercially available 5-bromoisoquinoline (4.85 g, 23.3 mmol) was dissolved in dichloromethane (78 mL), and m-CPBA (9.28 g, 35.0 mmol) was added. The mixture was stirred at room temperature for 0.5 hours. The reaction mixture was diluted by adding chloroform, and washed with a saturated sodium bicarbonate aqueous solution and saturated brine. The organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was dissolved in acetic anhydride (78.0 mL), and stirred for 1 hour under reflux. A 2.0 mol/L sodium hydroxide aqueous solution (156 mL) was added to the residue obtained by concentrating the reaction mixture under reduced pressure, and the mixture was stirred for 2 hours under reflux. The reaction mixture was cooled to room temperature, and neutralized with a 2.0 mol/L hydrochloric acid aqueous solution. The precipitated crystals were collected by filtration, and dried under reduced pressure to give 5-bromoisoquinolin-1(2H)-one (2.28 g, 10.1 mmol, 43%)., 34784-04-8

34784-04-8 5-Bromoisoquinoline 736487, aisoquinoline compound, is more and more widely used in various fields.

Reference£º
Patent; Kyowa Hakko Kirin Co., Ltd.; OTSUBO, Nobumasa; OKAZAKI, Shuko; TSUKUMO, Yukihito; IIDA, Kyoichiro; NAKOJI, Masayoshi; EP2708540; (2014); A1;,
Isoquinoline – Wikipedia
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