Category: indole-building-block

676273-39-5, 3-Iodo-1-tosyl-1H-indole-5-carbonitrile is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

676273-39-5, 3-Iodo-1-(toluene-4-sulfonyl)-1H-indole-5-carbonitrile (5.0 g, 11.8 mMol) was added to a solution of bis(tributyltin) (6.27 mL, 12.4 mMol) in DMF (50 mL). Triphenyl phosphine (310 mg, 0.10 mMol) and palladium(II)acetate (133 mg, 0.59 mMol) were added and the reaction was heated to 60 C. for 40 min. The reaction was cooled in a water bath, then poured into brine (500 mL), and extracted with ethyl acetate (3×50 mL). The organic phase was dried with magnesium sulfate and the solvent was removed in vacuo. The reaction was purified by chromatography on silica gel with hexanes to remove tin byproducts followed by elution with ethyl acetate/hexanes (8%) to give the product as an off-white solid (5.67 g, 82%). 1H NMR (400 MHz, CDCl3) delta 8.02 (1H, d, J=8.6 Hz), 7.75 (3H, m), 7.52 (1H, dd, J=8.6, 1.5 Hz), 7.49 (1H, s), 7.24 (2H, m), 2.35 (3H, s), 1.05-1.82 (18H, m), 0.89 (9H, m); MS m/e 587.3 (M+H).

The synthetic route of 676273-39-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Denhart, Derek John; Ditta, Jonathan L.; King, Dalton; Macor, John E.; Marcin, Lawrence R.; Mattson, Ronald J.; Meng, Zhaoxing; US2004/63768; (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

6127-17-9,6127-17-9, 6-Chloro-2-methyl-1H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of 6-chloro-2-methyl-1H-indole (5.00 g, 30.3 mmol) and TEBAC (0.60 g, 0.300 mmol) in CHCl3 (150 ml) was added, at 0 C., NaOH in water. The mixture was stirred at 0 C. for 3 h and then at RT for 14 h. The reaction mixture was then added gradually to ice-water and extracted with chloroform. The organic phase was washed with water, dried over Na2SO4 and concentrated on a rotary evaporator. The residue was purified by column chromatography purification with a hexane/ethyl acetate gradient as eluent. MH+: 214; 1H-NMR (400 MHz, CDCl3): delta 2.79 (s, 3H), 7.44-7.47 (dd, J=2.08 & 8.72 Hz, 1H), 7.63-7.65 (d, J=8.72 Hz, 1H), 7.99-8.00 (d, J=1.92 Hz, 1H), 8.07 (s, 1H).

As the paragraph descriping shows that 6127-17-9 is playing an increasingly important role.

Reference：
Patent; BAYER CROPSCIENCE AKTIENGESELLSCHAFT; FISCHER, Ruediger; HAGER, Dominik; HOFFMEISTER, Laura; KAUSCH-BUSIES, Nina; WILCKE, David; WILLOT, Matthieu; GOeRGENS, Urich; ILG, Kerstin; MOSRIN, Marc; PORTZ, Daniela; TURBERG, Andreas; US2018/305353; (2018); 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.10601-19-1,5-Methoxy-1H-indole-3-carbaldehyde,as a common compound, the synthetic route is as follows.

To a suspension of NaH (8.9 g, 0.223 mol) in DMF (300 mL) was cooled in an ice-bath. To this, a solution of the starting amine (30 g, 0.171 mol) in DMF (150 mL) was added dropwise. The reaction mixture was stirred at rt for 60 minutes. Then iodomethane (31.5 g, 0.223 mol) was added. The reaction mixture was stirred at rt for 1 hour. Then the mixture was poured onto 10% aqueous solution of NaHCO3, extracted with EA. The combined organicphases were washed with 10% aqueous solution of NaHCO3, brine and dried. The solution was concentrated to get crude product, which was triturated from EAHex to afford product as a light-yellow solid (29.5 g, 91.2%), 10601-19-1

10601-19-1 5-Methoxy-1H-indole-3-carbaldehyde 82758, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; GENENTECH, INC.; DRAGOVICH, Peter; PEI, Zhonghua; PILLOW, Thomas; SADOWSKY, Jack; VERMA, Vishal; ZHANG, Donglu; (268 pag.)WO2018/31662; (2018); 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

16732-69-7, Ethyl 7-bromo-1H-indole-2-carboxylate is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of ethyl 7-bromo-1H-indole-2-carboxylate (100 mg, 0.37 mmol) in dioxane (3 mL) and H20 (0.5 mL) were added 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-1H-pyrazole (93 mg, 0.45 mmol), K3P04 (198 mg, 0.93 mmol) andXPhos- G2-Pd-preCat (14.7 mg, 0.0 19 mmol) at rt. The reaction was stirred under N2 at100 C for 1 h. The reaction was cooled to rt. The solvent was removed. Purification by normal phase chromatography provided Intermediate 136 (94 mg, 94%) as a white solid. ?H NMR (400MHz, CDC13) oe 8.92 (br. s., 1H), 7.82 (s, 1H), 7.69 (s, 1H), 7.61 (d, J=7.9 Hz, 1H), 7.31 (dd,J=7.3, 1.1 Hz, 1H), 7.27 (d,J2.2 Hz, 1H), 7.18 (dd,J7.9, 7.3 Hz,1H), 4.41 (q, J=7.2 Hz, 2H), 4.03 (s, 3H), 1.42 (t, J=7.2 Hz, 3H). LC-MS(ESI) m/z: 270.1 [M+H].

16732-69-7, 16732-69-7 Ethyl 7-bromo-1H-indole-2-carboxylate 7017885, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; BRISTOL-MYERS SQUIBB COMPANY; LADZIATA, Vladimir; GLUNZ, Peter W.; HU, Zilun; WANG, Yufeng; (0 pag.)WO2016/10950; (2016); 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.227960-12-5,Methyl 5-methylindole-3-carboxylate,as a common compound, the synthetic route is as follows.

1.63 g (11.8 [MMOL)] of potassium carbonate are added at [25C] under an argon atmosphere to 0.895 g (4.73 [MMOL)] of [3-METHOXYCARBONYL-5-METHYL-1 H-INDOLE] in 10 cm3 of dimethyl sulphoxide. After stirring at [25C] for 0.5 hour, 0.774 g (4.73 [MMOL)] of 2-chloroquinoline is added. After stirring at [100C] for 48 hours, the reaction mixture is cooled and diluted with 100 cm3 ethyl acetate and then washed with 3 times 50 cm3 of water and 25 cm3 of saturated aqueous sodium chloride solution. After separating the phases by settling, the organic phase is dried over anhydrous magnesium sulphate, filtered and concentrated to dryness under reduced pressure (2.7 kPa) to give 1.2 g of a residue which is recrystallised under hot conditions from 30 cm3 of cyclohexane and 6 cm3 of ethyl acetate to give 0. 8 g of [3-METHOXYCARBONYL-5-METHYL-] [1-(QUINOL-2-YL)-1 H-INDOLE] in the form of a white solid melting at [143C.], 227960-12-5

227960-12-5 Methyl 5-methylindole-3-carboxylate 2759866, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; AVENTIS PHARMA DEUTSCHLAND GMBH; WO2004/7480; (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.118959-44-7,1-Methyl-1H-indole-3-carboxamide,as a common compound, the synthetic route is as follows.

General procedure: Lawesson?s reagent (0.38 g, 0.96 mmol for compound 7f or 0.80 g, 2 mmol for compounds 8a-f and 9a-e) was added to a solution of appropriate derivatives 7f (0.17 g, 0.95 mmol) or 8a-f and 9a-e (4 mmol) in anhydrous toluene or benzene (20 mL). The mixture was heated at reflux under nitrogen atmosphere for 0.5-24 h. After cooling the solvent was evaporated under reduced pressure and the residue was purified by column chromatography using ethyl acetate (for compound 10f), dichloromethane /ethyl acetate (98/2) (for compounds 11a-f) or dichloromethane (for compounds 12a-e) as eluent. For compounds 10f, 11a-f and 12a,c-e see supplementary material., 118959-44-7

118959-44-7 1-Methyl-1H-indole-3-carboxamide 823187, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Article; Carbone; Pennati; Barraja; Montalbano; Parrino; Spano; Lopergolo; Sbarra; Doldi; Zaffaroni; Cirrincione; Diana; Current Medicinal Chemistry; vol. 21; 14; (2014); p. 1654 – 1666;,
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

434958-85-7,434958-85-7, N-Boc-5-Hydroxyindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A solution of compound III-2 (3.2 g, 13.7 mmol)Was dissolved in 20 mL of CH2Cl2,Diisopropylethylamine (1.77 g, 13.7 mmol)Was dissolved in 120 mL of tetrahydrofuran,Mixed with both,The mixed solution was then slowly added to triphosgene (1.3 g, 4.38 mmol)In CH2Cl2 (100 mL)After stirring at room temperature for 1 h,A mixture of 1,4-diazabicyclo [3.2.2] nonane (1.72 g, 13.7 mmol)Of the CH2Cl2 solution was slowly added thereto,Reaction at room temperature for 4 h;After completion of the reaction, add H2O dilution withCHCl3, the organic phase was collected, washed with saturated aqueous NaCl solution, dried over anhydrous Na2SO4, the solvent was removed to give the crude product;CHCl3 and CH3OH (90:10) as the developing solvent. The product III-3 (2.4 g, 45%) was isolated.

434958-85-7 N-Boc-5-Hydroxyindole 22596220, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; Beijing Normal University; Zhang Huabei; Wang Huan; Fang Yu; Liu Jianping; Wang Shuxia; (32 pag.)CN107188900; (2017); 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

7506-66-3,7506-66-3, 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

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

7506-66-3 cis-Hexahydro-1H-isoindole-1,3(2H)-dione 6992236, aindole-building-block compound, is more and more widely used in various fields.

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.1065181-58-9,Ethyl 5-bromo-1H-indole-7-carboxylate,as a common compound, the synthetic route is as follows.,1065181-58-9

Intermediate 46: Ethyl 5-bromo-3-(4-thiepanyl)-1H-indole-7-carboxylate.To a solution of 4-thiepanone (900 mg, 6.9 mmol, 1.1 eq) in dry dichloromethane (30 ml.) was added activated molecular sieves (4 A, beads, spatula tip full) and the solution was cooled to O 0C using an ice water bath. Trimethylsilyl trifluromethanesulfonate (1.25 ml_, 6.9 mmol, 1.1 eq) was added dropwise to the ketone solution, followed by the dropwise addition of ethyl 5-bromo-1 /-/-indole-7-carboxylate (1.69g, 6.3 mmol, 1 eq) as a solution in dichloromethane (10 ml_). The reaction mixture was stirred at rt for 2h, then warmed to 35 0C for 45 minutes. The deep red reaction mixture was cooled to 0 0C and triethylsilane (2 ml_, 12.6 mmol, 2 eq) was added. The mixture was warmed to rt for 30 minutes, then was quenched by the addition of saturated aq. sodium bicarbonate. The aqueous layer was extracted with dichloromethane (2×50 ml_), and the combined organic extracts were dried over sodium sulfate, filtered through a thin pad of silica gel (to remove baseline impurities), eluting with 50% ethyl acetate in hexanes, and concentrated to afford the crude product as a yellow residue. The crude material was purified by lsco Combiflash, eluting with 0-30% ethyl acetate in hexanes (120 gram column). The title compound was obtained as a yellow residue (540 mg, 24%).

As the paragraph descriping shows that 1065181-58-9 is playing an increasingly important role.

Reference：
Patent; SMITHKLINE BEECHAM CORPORATION; WO2008/118724; (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

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

393553-57-6, To a solution of 6-bromo-4-methoxy-lH-indole A.85 (2.0 g, 8.85 mmol) in DMF (9 mL) was added (chloromethylene)dimethylamrnonium chloride (1.699 g, 13.27 mmol) and the mixture was stirred at room temperature for 24 hours. To the mixture was added water (50 mL) and 10 N aqueous NaOH (10 mL) and the mixture was heated at reflux for 1 hour. The mixture was cooled to 0 0C. The resulting precipitate was collected by filtration to give 6-bromo-4- methoxy-lH-indole-3-carbaldehyde A.140 (1.392 g, 61.9% yield) as a brown solid: 1H NMR (400 MHz, DMS0-d6) delta ppm 12.26 (1 H, s), 10.26 (1 H, s), 8.05 (1 H, s), 7.30 (1 H, d, J=I .5 Hz), 6.89 (1 H, d, J=I .1 Hz), 3.95 (3 H, s); Mass Spectrum (ESI) m/e = 253.9 [M+l (79Br)] and 255.9 [M+l (81Br)].

As the paragraph descriping shows that 393553-57-6 is playing an increasingly important role.

Reference：
Patent; AMGEN INC.; WO2009/158011; (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