Category: 434958-85-7

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.434958-85-7,N-Boc-5-Hydroxyindole,as a common compound, the synthetic route is as follows.

PREPARATION 2 5-[(2,3,4-tri-O-acetyl-5-thio-D-xylopyranosyl)oxy]-1H-indole-1-carboxylic Acid 1,1-dimethylethyl Ester A solution of 1.75 g (7.51 mM) of 5-hydroxy-1H-indole-1-carboxylic acid tert-butyl ester in 25 ml of THF, 2.73 g (13.5 mM) of diisopropylazodicarboxylate and 3.54 g (13.5 mM) of triphenylphosphine are added to a solution of 2.85 g (9.75 mM) of 2,3,4-tri-O-acetyl-5-thio-D-xylopyranose in 50 ml of THF. The reaction mixture is stirred at 45 C. for 3 hours and then concentrated under reduced pressure. The evaporation residue is dissolved in ethyl acetate and the organic phase is washed with a 1N solution of sodium hydroxide, and then with a concentrated aqueous solution of ammonium chloride. The organic phase is subsequently dried over magnesium sulfate and concentrated under reduced pressure. The evaporation residue is purified by C18-grafted silica chromatography, elution being carried out with an acetonitrile/water mixture (7/3; v/v). The desired product is obtained in the form of a pale yellow solid with a yield of 11%. Mp=58-62 C.

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

Reference：
Patent; LABORATOIRES FOURNIER S.A.; US2009/118325; (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

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.434958-85-7,N-Boc-5-Hydroxyindole,as a common compound, the synthetic route is as follows.,434958-85-7

General procedure: A suspension of bismacycle tosylate 1-OTs (1.0 equiv.; initial concentration = 0.05 M),K2CO3 (1.2 equiv.) and arylboronic acid (1.1 equiv.) in toluene/water (99:1,v/v) was stirred at 60 C for 2 h. After cooling to room temperature, substrates(naphthols, 0.90 equiv.; phenols, 3.0 equiv.) and mCPBA (titrated; 1.5 equiv.) were added. The reaction was stirred for 10 min at room temperature and then methanol (2 ml) was added. The mixture was diluted with diethyl ether and washed witha saturated aqueous solution of KHCO3. The organic phase was separated, dried (MgSO4), filtered and concentrated in vacuo before purification by flash column chromatography on silica gel. Following isolation of the desired arylation product, bismacycle acetate 1-OAc can be recovered by flushing the column with diethyl ether to remove organic impurities before elution with 2% acetic acid in methanol.

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

Reference：
Article; Ball, Liam T.; Jurrat, Mark; Lewis, William; Maggi, Lorenzo; Nature Chemistry; vol. 12; 3; (2020); p. 260 – 269;,
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, N-Boc-5-Hydroxyindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1-(tert-Butoxycarbonyl)-5-hydroxyindole (2.33 g, 10.0 mmol) and triphenylphosphine (5.25 g, 20.0 mmol) were dissolved in toluene (46.0 mL), and the solution was added with glycidol (1.32 mL, 20.0 mmol) and 40% DEAD-toluene solution (9.10 mL, 20 mmol) at room temperature, followed by stirring at 80C for 4 hours. The solvent was evaporated under reduced pressure and the residue was purified by flash column chromatography (hexane/ethyl acetate=4/1). A crude product (1.28 g) of 1-(tert-butoxycarbonyl)-5-hydroxyindole (1.28 g) was obtained. The obtained crude product was dissolved in N,N-dimethylacetoamide (20.0 mL), and the solution was added with 2- (ethylamino) ethanol (8.60 mL, 87.8 mmol), followed by stirring at 80C for 4 hours. The reaction mixture was added with water and extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by flash column chromatography (chloroform/methanol =9/1) to obtain 1-(tert-butoxycarbonyl)-5-{3-[N-ethyl(2-hydroxyethyl)amino]-2-hy droxypropoxy}indole (1.53 g, 40%). ESI-MS m/z: 379 [M+H]+; 1H-NMR (CDCl3)delta(ppm): 1.07 (t, J = 7.2 Hz, 3H), 1.66 (s, 9H), 2.61-2.80 (m, 6H), 3.61-3.68 (m, 2H), 3.99-4.14 (m, 3H), 6.48 (d, J = 3.9 Hz, 1H), 6.94 (dd, J = 2.6, 8.7 Hz, 1H), 7.04 (d, J = 2.6 Hz, 1H), 7.56 (d, J = 3.9 Hz, 1H), 8.01 (d, J = 8.7 Hz, 1H).

434958-85-7, The synthetic route of 434958-85-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Kyowa Hakko Kirin Co., Ltd.; EP2108642; (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

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

100 mg (0.4 mmol) of 5-hydroxy-1-tert-butyl ester-1H-indole (a) was dissolved in 1 ml of DMF, and 0.5 ml (4 mmol) of p-fluoroacetophenone and 0.96 g (0.8 mmol) were added.Potassium tert-butoxide, stirred at 100 C for 7 hours, diluted with water, extracted with EA,Wash with saturated sodium chloride, dry over anhydrous sodium sulfate, concentrate under reduced pressure, and thenPE: EA=150:1 to get an oil,The yield was 46%.

434958-85-7, The synthetic route of 434958-85-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Tianjin University of Science and Technology; Yu Peng; Guo Na; Lv Hongbin; Fu Ying; Teng Yuou; Wang Dong; (32 pag.)CN110229091; (2019); 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

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

Example 558 52 mg of tert-butyl 5-hydroxy-1H-indole-1-carboxylate, 79 mg of tripotassium phosphate, 4.7 mg of 2-(di-tert-butylphosphino)-2′,4′,6′-triisopropylbiphenyl and 6.8 mg of tris(dibenzylideneacetone)dipalladium(0) were added to 1.4 mL of toluene solution containing 70 mg of tert-butyl 2-(benzamido)-4-bromobenzoate at room temperature, and the resulting mixture was heated to reflux under nitrogen atmosphere for 2 hours and 30 minutes. After the reaction mixture was cooled to room temperature, ethyl acetate and 10% citric acid aqueous solution were added and insoluble were removed by filtration. The organic layer was separated and dried over anhydrous magnesium sulfate after washed with a saturated sodium chloride aqueous solution, and the solvent was evaporated under reduced pressure. The obtained residue was purified with silica gel column chromatography [PSQ100B (spherical) manufactured by Fuji Silysia Chemical Ltd., eluent; hexane: ethyl acetate = 10:1] to obtain tert-butyl 5-(3-(benzamido)-4-(tert-butoxycarbonyl)phenoxy)-1H-indole-1-carboxylate., 434958-85-7

The synthetic route of 434958-85-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; TOYAMA CHEMICAL CO., LTD.; EP1820795; (2007); 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

434958-85-7,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.434958-85-7,N-Boc-5-Hydroxyindole,as a common compound, the synthetic route is as follows.

2 g (8.6 mmol) of 5-hydroxy-1-tert-butyl ester-1H-indole (a) was dissolved in 5 ml of DMF.3.56 g (25.8 mmol) of potassium carbonate was added and stirred at room temperature for 10 minutes.Then 14.3 ml (172 mmol) of 1-bromo-2-chloroethane was added.After stirring at 100 C for 10 hours, it was diluted with water and extracted with DCM.Wash with saturated sodium chloride, dry over anhydrous sodium sulfate, concentrate under reduced pressure, and thenPE/EA=200:1 gave a white solid1.3 g, yield 52%.

As the paragraph descriping shows that 434958-85-7 is playing an increasingly important role.

Reference：
Patent; Tianjin University of Science and Technology; Yu Peng; Guo Na; Lv Hongbin; Fu Ying; Teng Yuou; Wang Dong; (32 pag.)CN110229091; (2019); 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

434958-85-7,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.434958-85-7,N-Boc-5-Hydroxyindole,as a common compound, the synthetic route is as follows.

Step 4: 1H-indole-1-carboxylic acid 5-[(dichlorophosphinyl)oxy]-1,1-dimethylethyl ester; To tert-butyl 5-hydroxy-1H-indole-1-carboxylate in Et2O (0.11 M) was added TEA (1.0 eq.), this solution was cooled to -78 C., then phosphorous oxychloride (1.0 eq) was added neat at that temperature and the resulting solution was left to warm to room temperature overnight. The white slurry was filtered under an inert atmosphere of N2 and all volatiles removed to yield the title compound as a colorless liquid that was used as is for the next step.31P NMR (300 MHz, CDCl3, 300K): delta4.23.

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

Reference：
Patent; MacCoss, Malcolm; Olsen, David B.; Donghi, Monica; Gardelli, Cristina; Harper, Steven; Meppen, Malte; Narjes, Frank; Pacini, Barbara; US2010/234316; (2010); 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

434958-85-7,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.434958-85-7,N-Boc-5-Hydroxyindole,as a common compound, the synthetic route is as follows.

To a solution of Intermediate 49 (3.00 g, 12.9 mmol, 1.0 eq) in anhydrous MeCN (13 mL) was added a solution of N-bromosuccinimide (2.53 g, 14.2 mmol, 1.1 eq) in anhydrous MeCN (130 mL) dropwise via cannula. After 1.5 h, addition was complete and the reaction mixture was stirred for a further 1 h. The reactionmixture was concentrated in vacuo and purified twice by silica gel chromatography using hexane/CH2CI2 (1 :0-1 .5:1) to yield Intermediate 50 as a white solid (605 mg, 15%).1H NMR (300MHz, DMSO-d5) oH. 9.95 (5, 1H), 7.78-7.91 (m, 1H), 7.61-7.73 (m, 1H), 6.97 (d, J=8.9 Hz, 1H), 6.50-6.59 (m, 1H), 1.54-1.70 (m, 9H).MS (E5) 311.9 (45%, [M-Hfl.

The synthetic route of 434958-85-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; KARUS THERAPEUTICS LTD; SHUTTLEWORTH, Stephen Joseph; SILVA, Franck Alexandre; CECIL, Alexander Richard Liam; ALEXANDER, Rikki Peter; GATLAND, Alice Elizabeth; FINNEMORE, Daniel John; (123 pag.)WO2017/29521; (2017); 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

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

In a 250 mL flask was placed terf-butyl 5-(benzyloxy)-1H-indole-1-carboxylate (3.3g, 14 mmol) in 100 mL of acetone. 1,3-Dibromopropane (5.74 mL, 56.6 mmol) wasadded, followed by cesium carbonate (5.5 g, 17 mmol). The reaction was heated toreflux for 5 h. The reaction was cooled to room temperature and diluted with water (200mL). The mixture was transferred to a separatory funnel and extracted with ethyl acetate(2 x 150 mL). The combined organics were dried (MgSO4), filtered, and evaporated.The residue was then purified via flash chromatography to provide 4.7 g of terf-butyl 5-(3-bromopropoxy)-1H-indole-1-carboxylate (94%). 1H-NMR (DMSO-d6) 5 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.

434958-85-7, As the paragraph descriping shows that 434958-85-7 is playing an increasingly important role.

Reference：
Patent; BAYER PHARMACEUTICALS CORPORATION; WO2005/51957; (2005); 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

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,434958-85-7

To a mixture of N-Boc-5-hydroxyindole (5.0 g), 1-piperidinepropanol (4.95 mL), Toluene (100 mL) and THF (25 mL), cyanomethylenetributylphosphorane (7.3 mL) was added and the mixture was stirred first at 85 C. for 3 hours, then at 100 C. for 3 hours, and finally at room temperature overnight. The reaction mixture was concentrated under reduced pressure and the resulting residue was purified by silica gel column chromatography (SNAP Cartridge KP-Sil, 100 g) to give the titled compound (3.97 g). MS (ESI pos.) m/z: 359([M+H]+)

As the paragraph descriping shows that 434958-85-7 is playing an increasingly important role.

Reference：
Patent; TAISHO PHARMACEUTICAL CO., LTD; Yoshinaga, Mitsukane; Ishizaka, Tomoko; Wakasugi, Daisuke; Shirokawa, Shin-ichi; Hattori, Nobutaka; Kashiwa, Shuhei; Kuwada, Takeshi; Shimazaki, Youichi; US2015/45551; (2015); 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