Category: indole-building-block

393553-57-6, 6-Bromo-4-methoxy-1H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Description 8. 6-Ethenyl-4-(methyloxy)-1 H-indole (D8) To a solution of 6-bromo-4-(methyloxy)-1 H-indole (900 mg, 3.98 mmol) in 1 ,2- dimethoxyethane (20 ml_) was added tributylvinyltin (1.74 ml_, 5.96 mmol). The reaction mixture was degassed with argon and then treated with dichlorobis(tri-o tolylphosphine)palladium (153 mg, 0.19 mmol). The mixture was heated at 9O0C for 65 hours. The mixture was filtered through a pad of celite, washed with ethyl acetate and then the filtrate concentrated in vacuo. The product was purified by silica gel chromatography eluting with 2-50% ethyl acetate in hexane to yield the title compound (D8), (781 mg). LC-MS: MH+ = 174 (CnH11NO = 173), 393553-57-6

The synthetic route of 393553-57-6 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; GLAXO GROUP LIMITED; WO2009/103710; (2009); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

7506-66-3, cis-Hexahydro-1H-isoindole-1,3(2H)-dione is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

7506-66-3, Under a nitrogen atmosphere, the temperature was controlled at 20 to 30 C. 300 mL of a three-necked flask was successively added with 300 mL of tetrahydrofuran and 24.0 g of zinc chloride. After 1 hour, 8.2 g of potassium borohydride was added, and stirring was continued for 1 hour. Then, 7.8 g of cis-hexahydrophthalimide was added, and the reaction was stirred for two hours. 2. OmL of concentrated sulfuric acid was added, the temperature was slowly raised, and the mixture was heated to reflux for two hours. 400 mL of toluene was added, and the mixture was distilled to an internal temperature of about 94 C, and refluxed for 3 hours. The distillation was continued at a temperature, and a portion of tetrahydrofuran was distilled off to an internal temperature of about 105 C to stop the distillation. After cooling to 30 C or less, 100 mL of 15% by mass hydrochloric acid was slowly added dropwise, and after the completion of the dropwise addition, the mixture was heated to distill off, and a part of the solvent was distilled off until the internal temperature reached about 107 C to stop. After cooling to below 30 C, 150 mL of 30% by mass sodium hydroxide was added dropwise to adjust the pH to 13-14. The steam was distilled, and the distillate was collected. The distillate was extracted with 3×100 mL of dichloromethane, and then dried over anhydrous sodium sulfate. The desiccant was filtered off, and the solvent was evaporated under reduced pressure to give 6.0 g of pale yellow transparent liquid,cis-perhydroisoindole

As the paragraph descriping shows that 7506-66-3 is playing an increasingly important role.

Reference：
Patent; Jiangxi Jimin Trustworthy Pharmaceutical Co., Ltd.; Jiangxi Jimin Trustworthy Group Co., Ltd.; Guo Linfeng; Wen Wanjiang; Peng Changchun; Zhang Keqin; He Pingqing; Li Yibao; (6 pag.)CN108752260; (2018); A;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.101495-18-5,4,6-Dichloro-1H-indole,as a common compound, the synthetic route is as follows.

To a mixture of 4,6-dichloro-1H-indole (0.5 g, 2.69 mmol) in AcOH (5 mL) was added NaBH3CN (557 mg, 8.87 mmol) at 0 C., and then the mixture was stirred at 25 C. for 12 h under an N2 atmosphere. The reaction mixture was quenched by the addition of ice water (20 mL) at 0 C., and then saturated aq. NaOH was added to the mixture to adjust the pH to 8. The reaction mixture was extracted with DCM (100 mL*2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to give a residue. The residue was purified by column chromatography (SiO2, petroleum ether/ethyl acetate=30:1 to 5:1), 4,6-Dichloroindoline (0.1 g, 531.7 mumol, 19.7% yield) was obtained as yellow oil.

101495-18-5, The synthetic route of 101495-18-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Cervello Therapeutics LLC; Lee, Matthew Randolph; Varano, JR., Anthony Joseph; (53 pag.)US2020/140412; (2020); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

14618-45-2, 3-(Trifluoroacetyl)indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of 2,2,2-trifluoro-1-(1H-indol-3-yl)ethanone (0.20 g, 0.938 mmol) in THF (1 mL) inan ice-bath was added sodium borohydride (71.00 mg, 1.877 mmol) under N2. Then boron trifluoridediethyl ether (0.357 mL, 2.815 mmol) was added dropwise. The reaction was let stirred for 2 h whilewarmed to room temperature. The mixture was poured into a mixture of ice-water and 5% aqueousNaHCO3 and extracted with ethyl acetate. The combined organics were concentrated. The residue waspurified by silica gel column chromatography to give the title compound (90 mg). LCMS m/z = 200.4[M+H]+; 1H NMR (400 MHz, CD3OD) delta ppm 3.57 (q, 2H, J = 11.1 Hz), 7.04 (t, 1H, J = 7.4 Hz), 7.12 (t, 1H, J= 7.3 Hz), 7.20 (s, 1H), 7.37 (d, 1H, J = 8.0 Hz), 7.54 (d, 1H, J = 7.9 Hz).

14618-45-2, As the paragraph descriping shows that 14618-45-2 is playing an increasingly important role.

Reference：
Article; Dang, Huong; Feichtinger, Konrad; Frazer, John; Grottick, Andrew J.; Kasem, Michelle; Le, Minh; Lehman, Juerg; Morgan, Michael E.; Ren, Albert; Sage, Carleton R.; Schrader, Thomas O.; Semple, Graeme; Unett, David J.; Whelan, Kevin T.; Wong, Amy; Zhu, Xiuwen; Bioorganic and medicinal chemistry letters; (2020);,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1008-07-7,7-Chloro-1H-indole-3-carbaldehyde,as a common compound, the synthetic route is as follows.

General procedure: To a solution of an appropriate indole, azaindole or alternative heterocycles (1.0 eq) and di-ferf-butyl dicarbonate (1eq. to 2 eq., more in particular 1.2 eq) in acetonitrile was added DMAP (0.1 to 0.5 eq. more in particular 0.1 eq). The reaction mixture was stirred overnight at room temperature. The reaction mixture was concentrated under reduced pressure. The residue was dissolved in dichloromethane and washed with a saturated sodium bicarbonate solution. The phases were separated. The aqueous phase was extracted with dichloromethane. The organic phases were combined, washed with a saturated ammonium chloride solution, water and brine, dried over magnesium sulfate, filtered and concentrated under reduced pressure. The BOC-protected compound was used in the next step without further purification.

1008-07-7, The synthetic route of 1008-07-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; KATHOLIEKE UNIVERSITEIT LEUVEN; BARDIOT, Dorothee; CARLENS, Gunter; DALLMEIER, Kai; KAPTEIN, Suzanne; McNAUGHTON, Michael; MARCHAND, Arnaud; NEYTS, Johan; SMETS, Wim; WO2013/45516; (2013); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

1059630-08-8, (4aS,9bR)-Ethyl 6-bromo-3,4,4a,5-tetrahydro-1H-pyrido[4,3-b]indole-2(9bH)-carboxylate is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1059630-08-8, (4aS,9bR)-ethyl 5-(2-amino-2-oxoethyl)-6-bromo-3,4,4a,5-tetrahydro-lH- pyrido[4,3-b]indole-2(9bH)-carboxylate may be prepared by heating to a reflux a suspension of (4aS,9bR)-ethyl 6-bromo-3,4,4a,5-tetrahydro-lH-pyrido[4,3-b]indole- 2(9bH)-carboxylate (5.648g, l7.4mmol), 2-chloroacetamide (7.32g, 78.2mmol), potassium iodide (19.2g, 77.7mol) and diisopropylethylamine (l9mL, H5mmol) in acetonitrile (80mL) for 27 hours. The solvent is removed in a vacuo and water (200mL) is added to the residue and stirred for 1 hour. The resulting white solid is filtered off, washed with ethanol and dried.

As the paragraph descriping shows that 1059630-08-8 is playing an increasingly important role.

Reference：
Patent; INTRA-CELLULAR THERAPIES, INC.; LI, Peng; ZHANG, Qiang; (113 pag.)WO2019/241278; (2019); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5192-03-0,1H-Indol-5-amine,as a common compound, the synthetic route is as follows.

Glacial acetic acid (1.3 mL, 22.7 mmol) and sodium triacetoxyborohydride (6.73 g, 31.7 mmol) were added to a solution of 5-aminoindole (3 g, 22.7 mmol), 4-oxo-piperidine-1-carboxylic acid tert-butyl ester (4.52 g, 22.7 mmol) in 1,2-dichloroethane (100 mL). The reaction mixture was stirred for 4 hours at room temperature; an aqueous solution of NaOH (1 M, 100 mL) was then added. The organic layer was separated, dried over MgSO4, filtered and evaporated under reduced pressure to give 6.9 g (96% yield) of 4-(1H-indol-5-ylamino)-piperidine-1-carboxylic acid tert-butyl ester as a black foam; this material was used without further purifications for the next step., 5192-03-0

5192-03-0 1H-Indol-5-amine 78867, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; Iyer, Pravin; Lucas, Matthew C.; Schoenfeld, Ryan Craig; Weikert, Robert James; US2009/247568; (2009); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

170147-29-2, tert-Butyl 5-(benzyloxy)-1H-indole-1-carboxylate is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

In a 250 mL flask was placed tert-butyl 5-(BENZYLOXY)-1H-INDOLE-1-CARBOXYLATE (3.3 g, 14 MMOL) in 100 mL of acetone. 1,3-Dibromopropane (5.74 mL, 56.6 MMOL) was added, followed by cesium carbonate (5.5 g, 17 MMOL). The reaction was heated to reflux for 5 h. The reaction was cooled to room temperature and diluted with water (200 mL). The mixture was transferred to a separatory funnel and extracted with ethyl acetate (2 x 150 mL). The combined organics were dried (MGS04), filtered, and evaporated. The residue was then purified via flash chromatography to provide 4.7 g of TERT-BUTYL 5- (3- BROMOPROPOXY)-1H-INDOLE-1-CARBOXYLATE (94%). 1H-NMR (DMSO-D6) No. 7.99-7. 89 (d, 1H), 7.61 (s, 1H), 7.17 (s, 1H), 6.98-6. 91 (d, 1H), 6.62 (s, 1H), 4.16-4. 05 (t, 2H), 3.64 (t, 2H), 2.37-2. 20 (m, 2H). LCMS RT= 3.55 min; [M] += 254. 1., 170147-29-2

The synthetic route of 170147-29-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; BAYER PHARMACEUTICALS CORPORATION; WO2004/43950; (2004); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.640735-23-5,4-Fluoro-7-azaindole,as a common compound, the synthetic route is as follows.,640735-23-5

Example 44 2-(2, 3-DIFLUORO-PHENYL)-1-(4-FLUORO-LH-PYRROLO [2S3-B] PY ridin-3-yl)-ethanone [0256] 4-FLUORO-LH-PYRROLO [2, 3-B] PYRIDINE (230mg, 1. 69MMOL) (ORG. Lett. 2003,5 (26), 5023) and AlCl3 (678, 5. lmmol) in methylene chloride (30mL) were stirred for 0.5hr. To this mixture was added 2,3-Difluoro-phenyl)-acetyl chloride (644mg, 3. 38MMOL) and the reaction solution was stirred for 14HR. Quenched with methanol (50mL) and water (50mL) and extracted with ethyl acetate, dried (NA2SO4). Flash chromatography (methylene chloride/methanol) afforded 2- (2, 3-Difluoro-phenyl)-l- (4-fluoro-lH-pyrrolo [2, 3-B] PY ridin-3-yl)-ethanone (448mg, 91% YIELD). LC/MS : RT 3.16mins. ; m/e 287.1 (M+H), 285.2 (M-H).

As the paragraph descriping shows that 640735-23-5 is playing an increasingly important role.

Reference：
Patent; VERTEX PHARMACEUTICALS INCORPORATED; WO2005/28475; (2005); A2;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

900514-08-1,900514-08-1, 5-Chloro-3-iodo-7-azaindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1 Preparation of 5-Chloro-3-iodo-1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridine (40)5-Chloro-3-iodo-1H-pyrrolo[2,3-b]pyridine (39, 31.2 g, 0.112 mmol) was dissolved in N-methylpyrolidinone (800 mL) and NaH (60% dispersion, 4.93 g, 0.123 mol) was added at room temperature. The resulting mixture was stirred for 30 minutes. To this mixture was then added triisopropylsilylchloride (24.0 mL, 0.112 mol) and the resulting mixture was stirred for 2 hours. The reaction was quenched with water and extracted with ethyl acetate three times, washed by brine, dried, filtered, and concentrated in vacuo. The residue was subjected to silica gel flash chromatography (eluted by heptane to 5% ethyl acetate/heptane) to afford the desired compound (43 g, 88%) as a pale-yellow solid

The synthetic route of 900514-08-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Spevak, Wayne; Cho, Hanna; Ibrahim, Prabha N.; Shi, Shenghua; Mamo, Shumeye; Gillette, Samuel J.; Zhu, Hongyao; US2008/167338; (2008); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles