Category: indole-building-block

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.14618-45-2,3-(Trifluoroacetyl)indole,as a common compound, the synthetic route is as follows.

General procedure for preparation of XY; A solution of XInt01 (1 eq), K2CO3 (5 eq) and alkyl halides Y such as methyl iodide, ethyl iodide, n-propyl bromide, iso-propyl bromide, n-butyl bromide, isobutyl bromide (1.5 eq, 1 h) or O-t-butyldimethylsilyl-2-chloroethanol (10 eq, 24 h) or O-t-butyldimethylsilyl-2-chloropropanol in acetone was stirred and heated to reflux. After completion of the reaction (monitored by thin layer chromatography (TLC)), the mixture was concentrated in vacuo and the residue treated with dichloromethane. The insoluble impurities were removed by filtration and the filtrate was concentrated to afford compound XY (60-95% yield).; Example 6; N-(cyclopentylmethyl)-1-methyl-1H-indole-3-carboxamide; Synthesised according to the procedure disclosed in Example 1 where X is indole, Y is methyl iodide and Z is cyclopentylmethyl amine. Formula: C16H20N2O; Molecular Weight: 256.3; Mass/charge ratio: 256.2 (100.0%), 257.2 (18.3%), 258.2 (1.8%); Elemental analysis: C, 74.97; H, 7.86; N, 10.93; O, 6.24.

14618-45-2, 14618-45-2 3-(Trifluoroacetyl)indole 589126, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; AFFECTIS PHARMACEUTICALS AG; US2009/312366; (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.118414-82-7,MK-886,as a common compound, the synthetic route is as follows.

Step 1: 3-[3-tert-Butylsulfanyl-1-(4-chloro-benzyl)-5-isopropyl-1H-indol-2-yl]-2,2-dimethyl-propionyl chloride To 3-[3-tert-butylsulfanyl-1-(4-chloro-benzyl)-5-isopropyl-1H-indol-2-yl]-2,2-dimethyl-propionic acid (prepared according to the procedures described in U.S. Pat. No. 5,081,138 issued Jan. 14, 1992; 0.25 g, 0.53 mmol) suspended in CH2Cl2 (5 mL) was added oxalyl chloride (48 uL, 0.56 mmol) and catalytic DMF. The reaction was stirred at room temperature for 3 hours, and then concentrated to give I-1, which was used without further purification.

118414-82-7, As the paragraph descriping shows that 118414-82-7 is playing an increasingly important role.

Reference：
Patent; Amira Pharmaceuticals, Inc.; US2007/105866; (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

7506-66-3,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7506-66-3,cis-Hexahydro-1H-isoindole-1,3(2H)-dione,as a common compound, the synthetic route is as follows.

Cis-8-azabicyclo[4,3,0]nonane To a slurry of lithium aluminium hydride (17.1 g) in dry diethyl ether (375 ml) under a nitrogen atmosphere, cis-hexahydrophthalimide (23.0 g) in dry tetrahydrofuran (300 ml) was added over a two-hour period. The mixture was refluxed for 2.5 hours, cooled and treated very slowly with excess of water. The precipitate was filtered off and the filtrate was evaporated to yield the title compound as a viscous oil, which was used in the next step without purification.

The synthetic route of 7506-66-3 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Leo Pharmaceutical Products Ltd. A/S; US4181659; (1980); 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.343-90-8,1-(5-Fluoro-1H-indol-3-yl)-N,N-dimethylmethanamine,as a common compound, the synthetic route is as follows.

A. 5-Fluoroindole-3-acetonitrile A mixture of 38 g of 3-dimethylaminomethyl-5-fluoroindole (0.198 mole; cf. Hoffman et al. J. Heterocyclic Chem. 2, 298 (1965); of the 5-fluorogramine therein) in 500 ml of methanol was prepared. Then a solution of 25.7 g of KCN (0.396 mole) in 50 ml of water was added, with stirring. The stirred mixture was cooled to 20 C. and 34.6 ml of methyl iodide (0.556 mole) was added over a 20 minute period. The mixture was then stirred at about 20 C. for 16 hours. The solvent was removed by evaporation and the residue was partitioned between ether and water. The ether portion was washed with water, 5% HCl, saturated NaHCO3 solution, water, and brine, dried over MgSO4 and evaporated to leave a liquid residue. This residue was distilled at reduced pressure in a Kugelrohr apparatus. The fraction distilling at 134-140 C. and 0.3 to 0.1 Torr was collected and crystallized from ethyl acetate-petroleum ether, mp 58-59, yield 5.3 g (44%).

343-90-8, The synthetic route of 343-90-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Miles Laboratories, Inc.; US4283336; (1981); 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

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

6127-17-9, Example 6Synthesis of CBX0044-(2-(6-chloro-2-methyl-lH-indol-l-yl)ethyl)morpholine[0161] To a solution of 2-chloroethylmorpholine HC1 (134 mg, 0.72 mmol) in 0.3 mL DMSO was added pulverized KOH (102 mg, 1.81 mmol), then after 10 min, a solution of 6- chloro-2-methylindole (100 mg, 0.60 mmol) in 0.2 mL DMSO was added and the reaction stirred at room temperature overnight. Additional 2-chloroethylmorpholine (22 mg, 0.12 mmol) and KOH (17 mg, 0.3 mmol) added and stirred overnight. The reaction mixture was partitioned between ?0 and toluene, and the organic extract washed two times with ?0, dried over MgS04, filtered, and concentrated in vacuo. The crude product was purified via silica gel chromatography using a gradient from 0 to 50% ethyl acetate in hexane to give a final yield of 149 mg (0.54 mmol). XH NMR (500 MHz, CDC13, delta): 2.44 (s, 3H), 2.49 (t, J = 4.4 Hz, 4H), 2.62 (t, J = 7.2 Hz, 2H), 3.73 (t, J = 4.5 Hz, 4H), 4.11 (t, J= 7.2 Hz, 2H), 6.23 (s, 1H), 7.06 (dd, J = 8.4 Hz, 1.7 Hz, 1H), 7.28 (s, 1H), 7.42 (d, J = 8.3 Hz, 1H). 13C NMR (500 MHz, CDC13, delta): 12.79, 41.18, 54.11, 57.83, 67.5, 100.30, 108.95, 119.90, 120.53, 126.40, 126.70, 137.06, 137.37. MS m/z 279.3 [M + H]+.

The synthetic route of 6127-17-9 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; UNIVERSITY OF WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATION; STELLA, Nephi; KLINE, Toni; WO2012/24670; (2012); 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

640735-23-5, 4-Fluoro-7-azaindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

640735-23-5, To a solution of 4-fluoro-1H-pyrrolo[2,3-b]pyridine (4.07 g, 29.9 mmol) in N,N- dimethylformamide (250 mL) was added N-bromosuccinimide (6.20 g, 34.8 mmol) in portions at 0 C. The reaction mixture was stirred at 0 C for 1 h. The reaction was quenched with water (200 mL) and the precipitate was collected to afford the title compound (4.06 g, 18.9 mmol, 63%) as an off-white solid.LCMS Method A: 99%, tR 1.328 min, m/z = 215.0 [M+H]+

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

Reference：
Patent; BIOBLOCKS, INC.; VISIONARY PHARMACEUTICALS; MEYER, Stephen Todd; WADE, Warren Stanfield; ZAPF, James W.; GERENCSER, Janos; GYIMOTHY, Balazs; (282 pag.)WO2020/23393; (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

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.16732-69-7,Ethyl 7-bromo-1H-indole-2-carboxylate,as a common compound, the synthetic route is as follows.

a (R)-7-Bromo-1-(2-tert-butoxycarbonylamino-1-methyl-ethyl)-1H-indole-2-carboxylic acid ethyl ester The title compound was produced in accordance with the general method of example 12b) from 7-bromo-1H-indole-2-carboxylic acid ethyl ester and (S)-5-methyl-2,2-dioxo-[1,2,3]oxathiazolidine-3-carboxylic acid tert-butyl ester. Yellow oil. ISP-MS: m/e=425.3 and 427.3 (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; Bentley, Jonathan M.; Hebeisen, Paul; Muller, Marc; Richter, Hans; Roever, Stephan; US2002/35110; (2002); 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.935269-27-5,3-Oxoisoindoline-4-carboxylic acid,as a common compound, the synthetic route is as follows.

935269-27-5, To a stirred solution of 4a-d, f-j (1.0 eq) in DMF was added HOBt (2.0 eq), HBTU (2.0 eq), and DIPEA (3.0 eq) followed by 3-oxo-2,3-dihydro-lH-isoindole-4-carboxylic acid (1.0 eq) and allowed to stir at rt for 12 h. The reaction mixture was then diluted with water. The product was filtered, washed with water, dried under vacuum, and obtained in 62-71percent yield. This product was then treated with 2 MHO in Et^O to remove the Boc group giving the Oxoisoindoline-Orn- benzimidazole intermediate. The solvent was then evaporated to dryness and the crude material was dried in vacuo. To a stirred solution of the corresponding Oxoisoindoline-Orn-benzimidazole intermediate in dry MeOH was added TEA (4.0 eq) followed by ethyl haloacetimidate HCl (2.0 eq). The reaction was stirred under N2 at rt for 3 h. Solvents were then evaporated under reduced pressure and the crude product was purified by reverse phase HPLC using MeCN:H20 (0.5percent TFA) as an eluent to give compounds 7a-v in 41-57percent yield.

As the paragraph descriping shows that 935269-27-5 is playing an increasingly important role.

Reference：
Patent; UNIVERSITY OF MASSACHUSETTS; THOMPSON, Paul, R.; MUTH, Aaron; SUBRAMANIAN, Venkataraman; (129 pag.)WO2018/102262; (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.89245-41-0,4-Bromoindole-3-acetic Acid,as a common compound, the synthetic route is as follows.

89245-41-0, Example 7 methyl (4-bromo-1H-indol-3-yl)acetic acid To methanol (10 mL), thionyl chloride (0.76 mL) was added dropwise at -15 to -10C, followed by stirring for 30 minutes. To the mixture, (4-bromo-1H-indol-3-yl)acetic acid (, 1.32 g) was added, followed by stirring at room temperature for 2 hours. To the reaction mixture, an aqueous saturated sodium hydrogen carbonate solution was added, followed by extraction with ethyl acetate. The organic layer was washed in turn with water and saturated saline, dried and then concentrated. The residue was washed with diisopropyl ether/n-hexane (1:2) to obtain the titled compound having the following physical properties (1.26 g). TLC: Rf 0.41 (n-hexane: ethyl acetate = 1:1); 1H-NMR(CDCl3): delta 3.74 (s, 3H), 4.06 (s, 2H), 6.98 (t, 1H), 7.10 (d, 1H), 7.23-7.27 (m, 2H), 8.25 (brs, 1H).

As the paragraph descriping shows that 89245-41-0 is playing an increasingly important role.

Reference：
Patent; ONO PHARMACEUTICAL CO., LTD.; EP1852420; (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

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

5-Benzyloxy-1-tert-butoxycarbonyl-1H-indole (3.14 g) was dissolved in 10% THF/methanol (80 mL), and 10% palladium hydroxide/carbon (50 mg) was added to the solution at room temperature. The mixture was stirred for 30 minutes under a stream of hydrogen at ambient pressure. The reaction mixture was filtered through a Celite pad, and the catalyst was washed with methanol. The filtrate was concentrated under reduced pressure, and ethyl acetate (50 mL) was added to the residue. The precipitated solid was collected by filtration, whereby the title compound (1.85 g) was yielded. NMR (DMSO-d6) delta: 1.47(9H,s),2.95(2H,t,J=8.4Hz),3.83(2H,t,J=8.5Hz)6.51(1H,d,J=8 5Hz),6.60(1H,s),7.53-7.22(1H,m),9.00(1H,s)., 170147-29-2

170147-29-2 tert-Butyl 5-(benzyloxy)-1H-indole-1-carboxylate 10663688, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; Daiichi Sankyo Company, Limited; EP2017263; (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