Category: indole-building-block

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.525593-33-3,3-Bromo-5-nitroindole,as a common compound, the synthetic route is as follows.

To a stirred solution of 3-bromo-5-nitro-lH-indole (2) (100.0 g, 0.414 mol) in DMF (1 L) was added NaH (19.9 g, 0.829 mol) at 0 C and the solution was stirred for 0.5 h. Methyl iodide (87.7 g, 0.622 mol) was then added to the reaction mixture and the solution was stirred at RT for another 2 h. After completion of reaction the mixture was quenched with water and extracted with ethyl acetate. The organic extract was dried over anhydrous sodium sulphate, filtered and solvents evaporated from the filtrate under reduced pressure to obtain a crude, which was purified by column chromatography on silica gel (100-200 mesh), eluted with 10-15% gradient of EtOAc in pet-ether, to afford 3 -bromo-l -methyl-5 -nitro-lH- indole (101.0 g, 95%)., 525593-33-3

Big data shows that 525593-33-3 is playing an increasingly important role.

Reference：
Patent; COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH; SRIVARI, Chandrasekhar; MAINKAR, Prathama Satyendra; REDDY, Chada Raji; KOTAMRAJU, Srigiridhar; TOGAPUR, Pavan Kumar; MUPPIDI, Subbarao Mohan Venkata; SHARMA, Somesh; JHA, Ashok Kumar; ARUMUGAM, Prem Kumar; (27 pag.)WO2019/102488; (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

162100-95-0, 6-Fluoro-5-methyl-1H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Synthesis of intermediate 8a: Diethylaluminum chloride 1 M in hexane (17.0 mL, 17.0 mmol) was added dropwise, at 0C and under N2-atmosphere, to a solution of 6-fluoro-5-methyl- 1 H-indole [CAS 162100-95-0] (1 .69 g, 1 1 .3 mmol) in CH2CI2 (150 mL). After 15 min at 0C, a solution of 2-(2-(2-(benzyloxy)ethoxy)-4-chlorophenyl)acetyl chloride 1e (5.37 g, 15.8 mmol, synthesis: see Example 1 ) in CH2CI2 (100 mL) was slowly added. The reaction mixture was stirred at 0C for 1 h and at room temperature for 2 h. The reaction mixture was poured out into an ice/Rochelle salt solution and the mixture was vigorously stirred. The layers were separated. The organic layer was dried over MgSO4 and filtered over a short pad of dicalite. The filter cake was rinsed a few times with THF and the combined filtrates were concentrated under reduced pressure. The solid residue was suspended in CH3CN (20 mL), filtered off, washed with a small amount of CH3CN, and dried under vacuum at 50 C to give 2-(2-(2-(benzyloxy)ethoxy)-4- chlorophenyl)-1 -(6-fluoro-5-methyl-1 H-indol-3-yl)ethanone 8a (2.39 g) as a white solid., 162100-95-0

As the paragraph descriping shows that 162100-95-0 is playing an increasingly important role.

Reference：
Patent; JANSSEN PHARMACEUTICALS, INC.; KATHOLIEKE UNIVERSITEIT LEUVEN; KESTELEYN, Bart Rudolf Romanie; RABOISSON, Pierre Jean-Marie Bernard; BONFANTI, Jean-Francois; JONCKERS, Tim Hugo Maria; BARDIOT, Dorothee Alice Marie-Eve; MARCHAND, Arnaud Didier M; (75 pag.)WO2017/46255; (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

938465-52-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.938465-52-2,1-Chloro-5H-pyrido[4,3-b]indole-4-carboxamide,as a common compound, the synthetic route is as follows.

To a solution of 1,4,8-triazaspiro[5.Sjundecan-5-one (30 mg, 0.l8mmol) inNMPmL) was added 1-chloro-5H-pyrido[4,3-bjindole-4-carboxamide (44 mg, 0.l8mmol) andDIEA (70 mg, 0.S4mmol), and the mixture was heated under microwave irradiation for 1.5 h at150 C. The reaction solution was purified by prep-HPLC to afford 1-(5-oxo-1,4,8-triazaspiro[5 . Sjundecan-8-yl)-5H-pyrido[4,3-bjindole-4-carboxamide. MS: 379.3 [M+Hjt 1HNMR (400 MHz, DMSO-d6) 3 11.93 (s, 1H), 9.67 (br. s., 1H), 8.70 (s, 1H), 8.54 (br. s., 1H),8.19 (br. s., 1H), 8.05 (d, J=7.8 Hz, 1H), 7.83 (d, J=8.0 Hz, 1H), 7.54 (br. s., 1H), 7.48 (t, J7.4Hz, 1H), 7.38 – 7.31 (m, 1H), 4.39 (d, J=14.1 Hz, 1H), 3.93 (d, J=12.5 Hz, 2H), 3.56 – 3.49 (m,2H), 3.45 (br. s., 2H), 2.98 (t, J=11.5 Hz, 1H), 2.40 -2.21 (m, 2H), 2.20 – 2.05 (m, 1H), 1.84 (d,J13.1 Hz, 1H) ppm.

938465-52-2 1-Chloro-5H-pyrido[4,3-b]indole-4-carboxamide 59198457, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; MERCK SHARP & DOHME CORP.; LIU, Jian; KOZLOWSKI, Joseph; KIM, Ronald; GAO, Xiaolei; BOGA, Sobhana Babu; YU, Younong; WU, Hao; LIU, Shilan; YANG, Chundao; (102 pag.)WO2016/164284; (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.101861-63-6,4,6-Dichloroindole-2-carboxylic acid,as a common compound, the synthetic route is as follows.

In the reaction bottle,22 g of 4,6-dichloroindolecarboxylic acid was added to 150 mL of DMSO, and then 3 g of copper chloride was added.The reaction was heated at 120 C for 1 h,TLC monitors the reaction of the starting material completely, and the reaction solution is filtered, and then 200 mL of dichloromethane is added to extract the reaction solution three times.The organic phases were combined, washed with 200 mL of water and concentrated.Then in a mixture of acetone and n-hexane (V acetone: V-hexane = 3:1)Recrystallization from 100 mL gives 4,6-dichloroanthracene 14g, 101861-63-6

101861-63-6 4,6-Dichloroindole-2-carboxylic acid 127988, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; Henan Normal University; Xu Guiqing; Wang Jiahao; Ren Baoqi; Zhou Yingjie; Mao Longfei; (9 pag.)CN109160895; (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

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

To the foregoing solution, under reflux, was added cis-cyclohexane-1,2-dicarboximide (10.6 g) portionwise over 10 minutes. The reaction mixture was heated to reflux for 3 hours. After cooling to 0 C., water (7 ml) was added followed by 4N sodium hydroxide (7.6 ml) and water (23 ml). The white suspension was stirred whilst warming to room temperature. The solid was removed by filtration then the filtrate dried (sodium sulphate) and evaporated to give a cream oil.

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

Reference：
Patent; Merck Sharp & Dohme, Ltd.; US5618812; (1997); 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.5192-03-0,1H-Indol-5-amine,as a common compound, the synthetic route is as follows.

A solution of 5-amino indole (2 g, 15.2 mmol) and di-tert-butyl dicarbonate (3.49 g. 15.2 mmol) in dichloromethane (20 ml) was stirred at ambient temperature overnight. The reaction mixture was concentrated under reduced pressure to yield crude (1H-indol-5-yl)-carbamic acid tert-butyl ester (3.47 g) which was used in the next step without further purification. MS: 250.3 (M+NH4)+., 5192-03-0

The synthetic route of 5192-03-0 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Ackermann, Jean; Aebi, Johannes; Binggeli, Alfred; Grether, Uwe; Hirth, Georges; Kuhn, Bernd; Maerki, Hans-Peter; Meyer, Markus; Mohr, Peter; Wright, Matthew Blake; US2005/96353; (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

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.

To a solution of 5-methyl-1H-indole-3-methyl carboxylate, (CAS 227960-12-5) (3 g, 10.58 mmol) in CH3CN (60 mL) was added cesium carbonate (10.3 g, 31.7 mmol) and the suspension was stirred at reflux temperature for 2 hrs. The mixture was then cooled at 50 C. and 4-(chloromethyl)-1,2-dimethylbenzene, (2.7 g, 17.5 mmol) was added slowly. The reaction mixture was stirred at reflux temperature for 1 hr. The reaction was cooled to room temperature and filtered to remove cesium carbonate, concentrated and gave Intermediate 1 (4.8 g).1H NMR (300 MHz, CDCl3) delta: 7.98 (s, 1H), 7.78 (s, 1H), 7.18-7.28 (m, 1H), 7.01-7.13 (m, 2H), 6.84-6.97 (m, 2H), 5.22 (s, 2H), 3.90 (s, 3H), 2.47 (s, 3H), 2.21 (d, 6H).

227960-12-5, The synthetic route of 227960-12-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; ALLERGAN, INC.; US2012/129829; (2012); 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

13006-59-2, 3-Methyl-1H-indole-2-carbonitrile is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1 : A mixture of 3-methyl-lH-indole-2-carbonitrile (500 mg, 3.2 mmol), 2- fluorobenzonitrile (388 mg, 3.2 mmol) and CS2CO3 (1.05g, 3.2 mmol) in DMF (10 mL) was heated at 60 C overnight. The mixture was poured into H20 and a precipitate formed. The solid was collected by filtration, washed with H20 and hexane, and dried under vacuum to give l-(2- cyanophenyl)-3-methyl-lH-indole-2-carbonitrile (780 mg, 94.6 %) as an off white solid that was used without purification.

13006-59-2, The synthetic route of 13006-59-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; DONNELL, Andrew F.; HAN, Xiaochun; KESTER, Robert Francis; KONG, Norman; LE, Kang; LOU, Yan; MICHOUD, Christophe; MOLITERNI, John Anthony; REMISZEWSKI, Stacy; RUPERT, Kenneth Carey; YUN, Weiya; WO2014/23708; (2014); 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.

Example 93C; 5 -[4-(4-Bromo-phenylcarbamoyl)-2-nitro-phenoxy]-indole- 1-carboxylic acid tert-butyl ester; [0465] The products of Example 1OA (406.5 mg, 1.145 mmol) and Example 93B (267 mg, 1.145 mmol) were dissolved in anhydrous N,N-dimethylformamide (8 mL), treated with potassium carbonate (316 mg, 2.289 mmol), and heated at 80 under a nitrogen atmosphere for 3 hours. The reaction was cooled to room temperature and the solvent removed by rotary evaporation under vacuum. The residue was taken up in water (50 mL) and extracted with ethyl acetate (2 x 50 mL). The combined organic extracts were washed with brine (25 mL), dried over anhydrous sodium sulfate, filtered, and concentrated by rotary evaporation under vacuum. Purification by silica gel flash chromatography using 1% ethyl acetate/methylene chloride as eluent provided the title compound as a yellow foam (519 mg, 82%).

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

Reference：
Patent; ABBOTT LABORATORIES; WO2007/76034; (2007); 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

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.170147-29-2,tert-Butyl 5-(benzyloxy)-1H-indole-1-carboxylate,as a common compound, the synthetic route is as follows.

Example 93B; 5 -Hydroxy-indole- 1-carboxylic acid tert-butyl ester; [0464] A solution of the product of Example 93 A (680 mg, 2.103 mmol) in ethanol (20 mL) was treated with 10% palladium-on-carbon (68 mg) and ammonium formate (265 mg, 4.205 mmol), and stirred at room temperature under a nitrogen atmosphere for 1 hour. The reaction was filtered through a 0.45 mu PTFE membrane and the catalyst washed with methanol. The filtrate was concentrated by rotary evaporation under vacuum and the residue taken up in ethyl acetate (50 mL), washed with water (2 x 25 mL) and brine (25 mL), dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum to provide the title compound as a white solid (475 mg, 96%).

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; ABBOTT LABORATORIES; WO2007/76034; (2007); 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