Category: tetrahydroisoquinoline

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.99365-69-2,7-Nitro-1,2,3,4-tetrahydroisoquinoline hydrochloride,as a common compound, the synthetic route is as follows.

(a) 2-benzyl-7-nitro-1,2,3,4-tetrahydroisoquinoline monohydrochloride To a solution of 7-nitro-1,2,3,4-tetrahydroisoquinoline monohydrochloride (2.50 g, 11.6 mmol) and potassium carbonate (2.0 g) in acetonitrile (100 ml) was added benzyl bromide (2.22 g, 13.0 mmol) in acetonitrile (10 ml). The solution was stirred overnight and the solid was then removed by filtration. The solvent was removed in vacuo to give a solid which was partitioned between methylene chloride and water. The dried (MgSO4) organic phase was concentrated and the resulting oil was taken up in ethanol (50 ml). This solution was made acidic with hydrochloric acid in ethanol. The precipitate which formed had set up solid and an additional 150 ml of ethanol and 50 ml of ether was added. The solid was collected and air dried to give 2-benzyl-7-nitro-1,2,3,4-tetrahydroisoquinoline hydrochloride as an off white solid (2.78 g (79percent)), m.p. 256¡ã-8¡ã C. (dec).

99365-69-2 7-Nitro-1,2,3,4-tetrahydroisoquinoline hydrochloride 13521670, atetrahydroisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; Astra Aktiebolag; US5807886; (1998); A;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

42923-79-5, 7-Nitro-1,2,3,4-tetrahydroisoquinoline is a tetrahydroisoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 8 (5.4g, 26mmol), Et3N (9. 8mL, 70mmol) and acetic anhydride (5. 0ml, 51mmol) in CH2C12 (70mL) is stirred at reflux temperature for 1 hour, cooled, and the reaction mixture is poured onto ice. The resulting solution is extracted three times with methylene chloride. The organic layer is dried over sodium sulfate and evaporated in vacuo. The residue is chromatographed on flash silica gel to give 5.3g of 13 (94% YIELD). 1H NMR (300MHz, CDCl3) delta 8.05-8. 03 (2H, M, H-6,8), 7.43-7. 30 (1H, M, H-5), 4.83 (1.2H, s, ArCH2N), 4.72 (0.8H, s, ArCH2N), 3.87 (0.8H, t, ArCH2CH2N), 3.74 (1.2H, t, ArCH2CH2N), 3.02 (1.2H, t, ArCH2CH2N), 2.95 (0.8H, t, ArCH2CH2N), 2.21 (1.2H, s, COCH3), 2.20 (1.8H, s, COCH3).

42923-79-5 7-Nitro-1,2,3,4-tetrahydroisoquinoline 6424833, atetrahydroisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; BUOLAMWINI, John, K,; WO2004/60902; (2004); A2;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.42923-77-3,6-Methoxy-1,2,3,4-tetrahydroisoquinoline,as a common compound, the synthetic route is as follows.

6-Methoxy-l,2,3,4-tetrahydroisoquinoline (14.7 g, 90 mmol) is dissolved in hydrobromic acid (48%, 300 ml), and the mixture is heated at 120 0C for 16 h. The solvent is removed under reduced pressure to give the title compound as the hydrobromate.

The synthetic route of 42923-77-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; NEUROGEN CORPORATION; WO2007/146122; (2007); A2;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

22990-19-8, 1-Phenyl-1,2,3,4-tetrahydroisoquinoline is a tetrahydroisoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1. 4 will be 43. 63g (0.208mol) 1.3 Phenyl-1,2,3,4-dihydroisoquinoline obtained in the above step (1) was dissolved 305 ml of isopropanol and 130 ml of water,Heated to 70 C, the raw materials completely dissolved,Then, 31. 28 g (0.208 m?) of D-tartaric acid was added,And the reaction temperature 30min, to tartaric acid completely dissolved, stop heating and cooling to room temperature, continue stirring for 3h, a white crystal precipitation, filtration, and washing with isopropanol, the white solid drying at 50 C,(S) -l-phenyl-1,2,3,4-tetrahydroisoquinoline tartrate 32. 75 g, yield 43.7%.

The synthetic route of 22990-19-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Jinan Healtang Biotech Co,Ltd; Meng, Qingwen; Wang, Wubao; Zhao, Haifeng; (11 pag.)CN103159677; (2016); B;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.81237-69-6,5-Bromo-1,2,3,4-tetrahydroisoquinoline,as a common compound, the synthetic route is as follows.

General procedure: step 1:The non-lipid compound (see Table 1 for specific substances) and the 1,2,3,4-tetrahydroisoquinoline compound (specificThe substance is shown in Table 1) added to the reaction vessel,Copper-containing compounds (see Table 1 for specific substances),Additives (see Table 1 for specific substances) and organic solvents (see Table 1 for specific substances) were added to the reaction vessel.Step 2: uniformly heat the reaction vessel (such as oil bath) to the temperature described in Table 1,The oxime compound and the 1,2,3,4-tetrahydroisoquinoline compound are reacted in an organic solvent and continue for the time described in Table 1;The reaction atmosphere to be described can be reacted by selecting air.Of course, the amount of oxygen required is 15-30%.Step 3: Purification step.

The synthetic route of 81237-69-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Xiangtan University; Huang Huawen; Qu Zhonghua; Deng Guojun; Xiao Fuhong; Chen Shanping; (32 pag.)CN110294758; (2019); A;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

170097-67-3, 2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-6-carboxylic acid is a tetrahydroisoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 24: 1 ,1-Dimethylethyl 6-r({1-r(3,4-dichlorophenyl)methvH-1 /-/-pyrazol-4- yl}amino)carbonyll-3,4-dihvdro-2(1 H)-isoquinolinecarboxylate;To a solution of 2-{[(1 ,1-dimethylethyl)oxy]carbonyl}-1 ,2,3,4-tetrahydro-6-isoquinoline carboxylic acid (138 mg, 0.5 mmol), N-(3-dimethylaminopropyl)-N’-ethylcarbodiimide hydrochloride (114 mg, 0.6 mmol), 1-hydroxybenzotriazole hydrate (81 mg, 0.6 mmol) and triethylamine (60 mg, 0.6 mmol) in DCM (10 ml.) was added 1-[(3,4- dichlorophenyl)methyl]-1 H-pyrazol-4-amine (Intermediate 7) (120 mg, 0.5 mmol) and the reaction mixture was stirred at room temperature overnight. The organic phase was then washed with a 1 N sodium hydroxide solution, with brine, dried over Na2SO4, filtered and evaporated under reduced pressure. The residue was purified by flash column chromatography eluting with DCM/MeOH: 95/5 to give the title compound as a white solid (190 mg, 77%) after recrystallization from CH3CN. LC/MS: m/z 501 (M+H)+, Rt: 3.65 min.

As the paragraph descriping shows that 170097-67-3 is playing an increasingly important role.

Reference£º
Patent; SMITHKLINE BEECHAM CORPORATION; WO2008/74824; (2008); A2;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.99365-69-2,7-Nitro-1,2,3,4-tetrahydroisoquinoline hydrochloride,as a common compound, the synthetic route is as follows.

7-nitro-l,2,3,4-tetrahydro-isoquinoline hydrochloride (2.57 g) was stirred inCH2Cl2/satd. NaHCO3 for 40 min. After separation of the layers (hydrophobic frit) the solvent was evaporated and the resulting solid dissolved in EtOH (80 ml), PtO2 (112 mg) was added and the mixture was stirred under an atmosphere of hydrogen for 3h. The catalyst was removed by filtration and solvent evaporated to give 7-amino-l,2,3,4-tetrahydro-isoquinoline as a brown solid (1.73 g).

99365-69-2 7-Nitro-1,2,3,4-tetrahydroisoquinoline hydrochloride 13521670, atetrahydroisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; PIRAMED LIMITED; THE INSTITUTE OF CANCER RESEARCH; WO2008/125839; (2008); A2;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.151838-62-9,2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid,as a common compound, the synthetic route is as follows.

The compound (6.27 g) of Example 27 (1) was dissolved in methylene chloride (50 mL), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (6.48 g) and n-pentylamine (3.1 mL) were successively added under ice-cooling, and the mixture was stirred at the same temperature for 1.5 hr. After the reaction mixture was washed successively with 10% aqueous citric acid solution and saturated brine, and dried over sodium sulfate. Then, methylene chloride was evaporated under reduced pressure. The obtained residue was dissolved in formic acid (20 mL), 10M hydrogen chloride – isopropanol solution (6.8 mL) was added under ice-cooling, and the mixture was stirred at the same temperature for 15 min. The reaction mixture was neutralized with saturated aqueous sodium hydrogen carbonate, extracted with ethyl acetate (50 mL), washed with saturated brine, and dried over sodium sulfate. Then, ethyl acetate was evaporated under reduced pressure. The obtained residue was washed with n-hexane, and the precipitate was collected by filtration to give a powder (2.58 g).

151838-62-9 2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 2735649, atetrahydroisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; Kyoto Pharmaceutical Industries, Ltd.; EP1857444; (2007); A1;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem