Month: September 2020

The tetrahydroisoquinoline compound, name is 6-Methoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride,cas is 57196-62-0, mainly used in chemical industry, its synthesis route is as follows.

6-methoxytetrahydroisoquinoline hydrochloride (39.9 mg, 0.2 mmol),Molybdenum disulfide (4mg, 0.025mmol),And a stirring bar into the reaction tube,After replacing inert gas,Add 1 ml DMF,Seal the reaction tube.Place the reaction tube in a 150C oil bath reaction pot.Stir the reaction for 18 hours;After cooling to room temperature,Remove the catalyst by filtrationThe filtrate was diluted with 15 mL of water.And extracted three times with ethyl acetate,15mL each time;Combine the extracts,Dry with anhydrous sodium sulfate.filter,The filtrate was concentrated under reduced pressure.With ethyl acetate:The crude product was subjected to column chromatography with petroleum ether=1:3 (containing 1% triethylamine) as eluent to obtain a pure product.Yellow solid,Melting point63-64C,Yield 91%., 57196-62-0

As the rapid development of chemical substances, we look forward to future research findings about 57196-62-0

Reference£º
Patent; Xiangtan University; Gong Xing; Xie Guilin; Cai Changqun; Ma Juan; (19 pag.)CN107827817; (2018); A;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

1029689-82-4, Methyl 1,2,3,4-tetrahydroisoquinoline-8-carboxylate hydrochloride is a tetrahydroisoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of methyl l,2,3,4-tetrahydroisoquinoline-8-carboxylate hydrochloride (12.37 g) and Example 1.1.11 (15 g) in dimethyl sulfoxide (100 mL) was added N,N-diisopropylethylamine (12 mL). The mixture was stirred at 50C for 24 hours. The mixture was then diluted with ethyl acetate (500 mL), washed with water and brine, and dried over NaaSOzi. Filtration and evaporation of the solvent gave a residue that was purified by silica gel chromatography, eluting with 20% ethyl acetate in heptane, to give the title compound. MS (ESI) m/e 448.4 (M+H)+.

1029689-82-4, 1029689-82-4 Methyl 1,2,3,4-tetrahydroisoquinoline-8-carboxylate hydrochloride 45074000, atetrahydroisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; ABBVIE INC.; BOGHAERT, Erwin R.; ACKLER, Scott L.; TAO, Zhi-Fu; WANG, Xilu; DOHERTY, George; MARIN, Violeta L.; SULLIVAN, Gerard M.; SONG, Xiaohong; KUNZER, Aaron R.; WELCH, Dennie S.; BRUNCKO, Milan; JUDD, Andrew S.; SOUERS, Andrew J.; (276 pag.)WO2016/94505; (2016); A1;,
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.

A solution of 35% formaldehyde (2.49 g, 0.034 mol) was added dropwise to 2-(3-methoxyphenyl)ethanamine (5g, 0.033 mol). The warm solution soon deposited an oil and the reaction was completed by heating the mixture for one hour at 100 C. The oil was extracted with toluene (25 ml) and washed with water (3 x 18 ml). The extract was dried over Na2SO4 and the solvent was concentrated to yield a yellow oil. A solution of 20% hydrochloric acid (6 ml) was added to the crude and the mixture was stirred at 100 C for 1 hour. After the evaporation to dryness, the residue was dissolved in a little water, made alkaline with concentrated potassium hydroxide, extracted with dichloromethane (3 x 90 ml) and dried over Na2SO4. After the evaporation of the solvent, the oil was dissolved in ethyl acetate and concentrated hydrochloric acid was added to form the hydrochloride, which was filtered to yield a white solid identified as 6-methoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride (5.1 g, 80 % yield). 1H NMR (300 MHz, CHLOROFORM-D) delta ppm 2.80 (t, J=6.01 Hz, 2 H) 3.14 (t, J=6.01 Hz, 2 H) 3.78 (s, 3 H) 3.97 (s, 2 H) 6.63 (d, J=2.50 Hz, 1 H) 6.71 (dd, J=8.42, 2.56 Hz, 1 H) 6.93 (d, J=8.42 Hz, 1H) MS (APCI (M+H)+): 164

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

Reference£º
Patent; LABORATORIOS DEL DR. ESTEVE, S.A.; EP1676844; (2006); A1;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

215798-14-4, 6-(Trifluoromethyl)-1,2,3,4-tetrahydroisoquinoline hydrochloride is a tetrahydroisoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,215798-14-4

Step B: N-[2-Chloro-6-methyl-4-(6-trifluoromethyl-3,4-dihydro-1H-isoquinolin-2-yl)-phenyl]-3,3-dimethylbutanamide Bis(dibenzylidineacetone)palladium (2 mg, 0.0035 mmol) and (2′-dicyclohexyl phosphanyl-biphenyl-2-yl)-dimethylamine (3.3 mg, 0.0084 mmol) were added to dry toluene (10 mL purged with argon) and stirred for 15 minutes under argon. Potassium tert-butoxide (197 mg, 1.75 mmol), 6-trifluoromethyl-1,2,3,4-tetrahydroisoquinoline hydrochloride salt (154 mg, 0.65 mmol) and N-(4-bromo-2-chloro-6-methyphenyl)-3,3-dimethylbutanamide (200 mg, 0.63 mmol) were then added and the reaction mixture was stirred at 90 C. overnight. The reaction mixture was then cooled to room temperature, concentrated and purified by thin layer chromatography (dichloromethane:methanol 5%) to afford the title compound as a solid.1H NMR (DMSO-d6, 400 MHz) delta 1.08 (s, 9H), 2.17 (s, 3H), 2.21 (s, 2H), 3.0 (t, J=5.25 Hz, 2H), 3.6 (t, J=5.6 Hz, 2H), 4.5 (s, 2H), 6.9 (s, 1H), 6.95 (s, 1H), 7.3 (m, 1H), 7.5 (m, 2H), 9.13 (s, 1H).

As the paragraph descriping shows that 215798-14-4 is playing an increasingly important role.

Reference£º
Patent; Valeant Pharmaceuticals North America; US2008/139610; (2008); A1;,
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.42923-79-5,7-Nitro-1,2,3,4-tetrahydroisoquinoline,as a common compound, the synthetic route is as follows.,42923-79-5

To a stined solution of 7-nitro-1,2,3,4-tetrahydroisoquinoline (850 mg,4.77 mmol) in MeOH (10 mL) were added oxetan-3-one (152 mg, 0.77 mmol) and ZnC12 (1.7 g, 23.87 mmol) followed by NaCNBH3 (3.2 g, 23.87 mmol) at 0 C. The ice bath was removed, and the reaction was stined at RT for 3 h. The reaction was diluted with water (25 mL) and extracted with EA (3 x 20 mL). The organic layers were dried (Na2SO4), filtered and concentrated in vacuo. The crude compound was purified by column chromatography (neutral alumina) to afford 7-nitro-2-(oxetan-3-yl)- 1,2,3 ,4-tetrahydroisoquinoline (750 mg, 68%) as an off-white solid. MS (ESI) m/z 235.3 [M+H].

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

Reference£º
Patent; ZENO ROYALTIES & MILESTONES, LLC; HUANG, Peter, Qinhua; BOREN, Brant, Clayton; BUNKER, Kevin, Duane; LIU, Hui; PALIWAL, Sunil; (99 pag.)WO2019/28008; (2019); A1;,
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.215798-19-9,6-Bromo-1,2,3,4-tetrahydroisoquinoline hydrochloride,as a common compound, the synthetic route is as follows.,215798-19-9

To a stirred solution of 6-bromo-l,2,3,4-tetrahydro-isoquinoline hydrochloride (3.09 g, 12.4 mmol) in acetonitrile (50.0 ml) is added 2-chloro-(4-cyclobutyl-piperazine)-acetamide (2.69 mg, 12.4 mmol, 1.0 eq.), K2CO3 (5.14 g, 37.3 mmol, 3.0 eq.), and NaI (400 mg). The resulting mixture is stirred at it overnight. Water (40.0 ml) is added to quench the reaction, and then the acetonitrile is evaporated. The residue is extracted with DCM (40 ml x 3). The combined organic phase is dried over sodium sulfate, and the solvent is removed under reduced pressure to give a residue that is purified by flash silica gel chromatography (EtOAc / 4% TEA) to give the title compound. MS (+VE) m/z 392.2 (M+ +1).

The synthetic route of 215798-19-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; NEUROGEN CORPORATION; WO2007/106349; (2007); 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.

Example 23 A. Podophyllotoxin-4-O-ester of N-BOC-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid [000302] ; The mixture of podophyllotoxin (20 mg, 0.048 mmol), N-BOC-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid (22 mg, 0.07 mmol), EDCI (25 mg, 0.13 mmol), DMAP (2 mg, 0.02 mmol) and dichloromethane (3 ml) were stirred in the room temperature for 20 h, then dichloromethane (20 ml) was added to the solution. Organic layer was washed with water (20 ml), saturated NaHCO3 aqueous solution (10 ml) and brine (20 ml), and then dried over MgSO4. After the solvent was removed under reduced pressure, the resulting liquid was separated by column chromatography (eluent: ethyl acetate and petroleum ether) to afford 15 mgPodophyllotoxin-4-O-ester of N-BOC-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid. [0242] The chemical structure analysis was performed by 1HNMR (CDCl3, 600 MHz):, 151838-62-9

As the paragraph descriping shows that 151838-62-9 is playing an increasingly important role.

Reference£º
Patent; Yang, Li-Xi; US2005/4169; (2005); A1;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The tetrahydroisoquinoline compound, cas is 91-21-4 name is 1,2,3,4-Tetrahydroisoquinoline, mainly used in chemical industry, its synthesis route is as follows.

Step 1 Conc. sulfuric acid (80 ml) was added by small portions to tetrahydroisoquinoline (24.4 g, 183 mmol) under ice-cooling for dissolution. Then, 60percent nitric acid (18 ml) was added dropwise from a funnel and the mixture was stirred under ice-cooling for 3 hr. The mixture was stirred at room temperature for 18 hr. The reaction mixture was diluted with water under ice-cooling, and 35percent aqueous sodium hydroxide solution was added to adjust the solution to pH 12. After extraction with chloroform, the organic layer was washed with water, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was dissolved in ethanol (180 ml) and conc. hydrochloric acid (20 ml) was added under ice-cooling. The precipitated brown crystals were collected by filtration with suction to give 7-nitrotetrahydroisoquinoline hydrochloride (7.18 g, 22percent)., 91-21-4

As the rapid development of chemical substances, we look forward to future research findings about 91-21-4

Reference£º
Patent; Japan Tobacco Inc.; US6410561; (2002); B1;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The tetrahydroisoquinoline compound, cas is 923591-51-9 name is 5-Bromo-1,2,3,4-tetrahydroisoquinoline hydrochloride, mainly used in chemical industry, its synthesis route is as follows.

Intermediate O: 5-(2-(l-Methyl-lH-pyrazol-5-yl)-4-(trifluoromethyl)phenyl)-l,2,3,4- tetrahydroisoquinoline A vial was charged with 5-bromo-l,2,3,4-tetrahydroisoquinoline hydrochloride (ASW Medchem, Brunswick, NJ, 400.42 mg, 1.367 mmol), (2-(l- methyl-lH-pyrazol-5-yl)-4-(trifluoromethyl)phenyl)boronic acid (Intermediate B, 443 mg, 1.640 mmol), potassium phosphate (1 160 mg, 5.47 mmol), and Pd(AmPhos)2Ci2 (Sigma- Aldrich, St. Louis, MO, 48.4 mg, 0.068 mmol). The vial was flushed with Ar (g), then dioxane (2928 mu) and water (976 mu) were added in sequence. The mixture was heated in a microwave reactor for 30 min at 90 C. After cooling to room temperature, the mixture was diluted with EtOAc, washed with water (and a small amount of brine to break up emulsions, 2x), washed with brine, dried over sodium sulfate, filtered, and concentrated. The residue was taken up in MeOH, then loaded onto a 10 g SCX-2 ion exchange column. The column was eluted with MeOH, then with 2M ammonia in MeOH. The basic filtrate was concentrated, and the residue was chromatographed on a 40 g silica gel column with 0 to 10% MeOH/DCM to provide 5-(2-(l -methyl- lH-pyrazol-5-yl)-4-(trifluoromethyl)phenyl)-l ,2,3,4- tetrahydroisoquinoline as a pale yellow solid. [M+H]+ = 358.1. XH NMR (400 MHz, DMSO-d6) delta ppm = 7.91 – 7.80 (m, 2 H), 7.56 (d, J= 8.0 Hz, 1 H), 7.28 (d, J= 2.0 Hz, 1 H), 7.09 – 6.95 (m, 2 H), 6.84 (dd, J= 1.3, 7.4 Hz, 1 H), 5.96 (d, J= 1.9 Hz, 1 H), 3.85 (s, 2 H), 3.52 (br. s., 3 H), 2.93 – 2.84 (m, 1 H), 2.79 – 2.67 (m, 1 H), 2.48 – 2.39 (m, 1 H), 2.09 (td, J= 5.3, 16.7 Hz, 1 H)., 923591-51-9

As the rapid development of chemical substances, we look forward to future research findings about 923591-51-9

Reference£º
Patent; AMGEN INC.; DINEEN, Thomas; KREIMAN, Charles; WEISS, Matthew; GEUNS-MEYER, Stephanie; WO2013/134518; (2013); A1;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The tetrahydroisoquinoline compound, cas is 22990-19-8 name is 1-Phenyl-1,2,3,4-tetrahydroisoquinoline, mainly used in chemical industry, its synthesis route is as follows.

Example 1: Preparation of phenyl 1-phenyl-3,4-dihydro-1H-isoquinoline-2-carboxylate (II); A solution of racemic 1-phenyl-1,2,3,4-tetrahydro-isoquinoline (100 mg, 0.48 mmols) in tetrahydrofuran (500 mul) is added with diphenyl carbonate (102.36 mg, 0.48 mmols) and dimethylaminopyridine in catalytic amount and refluxed. After completion of the reaction, the solvent is evaporated off under reduced pressure and the product is isolated by flash chromatography. The title product is obtained as a yellow oil in 75% yield. 1-H-NMR (400 MHz, CDCl3) delta 2.85-2.94 (1H, m), 3.10-3.21 (1H, m), 3.35-3.56 (1H, br s), 4.22-4.31 (1H, m), 6.54-6.59 (1H, s), 7.09-7.44 (15H, m)., 22990-19-8

As the rapid development of chemical substances, we look forward to future research findings about 22990-19-8

Reference£º
Patent; Dipharma Francis S.r.l.; EP2088148; (2009); A2;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem