Tag: M.W:100-200

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1074-86-8,1H-Indole-4-carbaldehyde,as a common compound, the synthetic route is as follows.

Example 1 ethyl 2-(1H-indol-4-yl)-8,9-dimethoxy-3-methyl-5,6-dihydropyrrolo[2,1-a]isoquinoline-1-carboxylate A mixture of 500 mg (1.8 mmol) of ethyl (6,7-dimethoxy-3,4-dihydro-1(2H)-isoquinolinylidene)-ethanoate (Intermediate 2.1), 523 mg (3.61 mmol) of indole-4-carbaldehyde, 281 mg (3.61 mmol) of nitroethane and 61.4 mg (0.72 mmol) of piperidine in 10 ML of ethanol/isopropanol (1:1) was stirred at 80¡ã C. overnight. 40 ML of isopropanol were added, the mixture was cooled to 0¡ã C., and the resulting precipitate was filtered off.The solid was washed with ethanol and dried in vacuo to give the title compound as a white solid.The title compound was readily recrystallized from ethyl acetate to furnish white needles. Yield: (487 mg, 63percent) Melting point [¡ã C.]: 246-247 _

1074-86-8, As the paragraph descriping shows that 1074-86-8 is playing an increasingly important role.

Reference£º
Patent; Niewohner, Ulrich; Niewohner, Maria; Bauser, Marcus; Erguden, Jens-Kerim; Flubacher, Dietmar; Naab, Paul; Repp, Thorsten-Oliver; Stoltefuss, Jurgen; Burkhardt, Nils; Sewing, Andrea; Schauer, Michael; Schlemmer, Karl-Heinz; Weber, Olaf; Boyer, Stephen J.; Miglarese, Mark; Fan, Jianmei; Phillips, Barton; Raudenbush, Brian C.; Wang, Yamin; US2003/236276; (2003); 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.19012-02-3,3-Acetyl-1-methylindole,as a common compound, the synthetic route is as follows.,19012-02-3

General procedure: To a solution of N-methyl-3-acetylindol (1 mmol) and the benzaldehyde derivative (1 mmol) in methanol (10 ml) was added KOH (1 ml from a 50% solution in H2O). The mixture was heated at 60 C for 12 h then evaporated to dryness. The crude was dissolved in ethyl acetate (30 ml) then washed with HCl (1N, 10 ml) and H2O (10 ml), respectively. The organic layer was separated, dried over Na2SO4 and evaporated. The product was purified by chromatography column eluted with hexane:ethyl acetate (8:2) to yield the title compound as a yellow powder.

19012-02-3 3-Acetyl-1-methylindole 594156, aindole-building-block compound, is more and more widely used in various fields.

Reference£º
Article; Martel-Frachet, Veronique; Kadri, Malika; Boumendjel, Ahcne; Ronot, Xavier; Bioorganic and Medicinal Chemistry; vol. 19; 20; (2011); p. 6143 – 6148;,
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

4769-96-4, 6-Nitro-1H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

a) 6-Aminoindole was prepared from 6-nitroindole in a manner similar to that described in Example 5b.

4769-96-4, 4769-96-4 6-Nitro-1H-indole 78502, aindole-building-block compound, is more and more widely used in various fields.

Reference£º
Patent; Hoffmann-La Roche Inc.; US6228877; (2001); B1;,
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

6146-52-7,6146-52-7, 5-Nitroindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Nitro-lH-indole (325 mg, 2.0 mmol)In dichloromethane (6 mL) was added di-tert-butyl dicarbonateEster (524 mg, 2.4 mmol),Stirred at 0 C for 5 minutes,A further catalytic amount of 4-dimethylaminopyridine (3 mg, 0.025 mmol) was added,Stirring is then continued for 30 minutes at room temperature.Quenched by adding water (2 mL)Extract with dichloromethane (15 mL x 3).The combined organic phase was washed with water (20 mL)Saturated brine (15 mL ¡Á 2)Dried over anhydrous sodium sulfate,The solvent was distilled off under reduced pressure,Obtained as a gray solid (526 mg, 100%),Directly used for the next reaction.

As the paragraph descriping shows that 6146-52-7 is playing an increasingly important role.

Reference£º
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; Wen Liang; Zheng Jinfu; Zhang Jin; Wu Shoutao; Yuan Xiaofeng; Lin Runfeng; Wang Xiaojun; Zuo Yinglin; Zhang Yingjun; (21 pag.)CN104311541; (2017); B;,
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

29906-67-0, 1-Methyl-5-nitro-1H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Silver (I) oxide (1 eq.) was added to a stirred solution of indole (1eq.) and benzyl bromide (1 eq.) in dioxane (1 mL/mmol of indole) ina microwave tube under nitrogen gas. The reaction was sealed andstirred at 60 C for 20 h. EtOAc (2 mL/mmol of indole) was added tothe reaction. The reaction was then filtered through celite and thefiltrate was rotovapped. Product was purified by column chromatographyto give a yellow solid; 25-45%; 1H NMR (DMSO): delta 8.42 (d,J 2.3 Hz, 1H), 8.02 (dd, J 9.1, 2.3 Hz, 1H), 7.93e7.84 (m, 2H), 7.60(d, J 9.1 Hz, 1H), 7.44 (d, J 8.3 Hz, 3H), 4.21 (s, 2H), 3.83 (d,J 4.1 Hz, 6H); 13C NMR (DMSO): delta166.59, 147.18, 140.80, 140.05,132.12, 129.82, 129.25, 127.93, 126.82, 116.99, 116.29, 116.03, 110.86,52.45, 33.30, 30.65

29906-67-0, As the paragraph descriping shows that 29906-67-0 is playing an increasingly important role.

Reference£º
Article; Martinez, Anastasia A.; Espinosa, Bianca A.; Adamek, Rebecca N.; Thomas, Brent A.; Chau, Jennifer; Gonzalez, Edwardo; Keppetipola, Niroshika; Salzameda, Nicholas T.; European Journal of Medicinal Chemistry; vol. 157; (2018); p. 1202 – 1213;,
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

245-08-9, 5H-Pyrido[3,2-b]indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

One 100 mLThe flask Intermediate (4) (0.5 g, 1.005 mmol), delta-carboline(d-carboline)0.2 g (1.105mmol), CuI 24 mg (0.126 mmol), 1,10 phenanthroline (1,10 phenanthroline) 45mg (0.251 mmol), cesium carbonate (cesium carbonate, Cs2CO3) 0.7 g (2.010 mmol) and dimethylformamide (dimethylformamide, DMF) (40 mL) and mixed, and then,stirred for 12 hours at 120 ~ 130C. The reaction was cooled to room temperature and then terminated and purified by silica gel column chromatography to give compound (4-33) 0.2 g (Yield: 40%) of a white solid was obtained., 245-08-9

As the paragraph descriping shows that 245-08-9 is playing an increasingly important role.

Reference£º
Patent; WS Co.,Ltd; Ko, Byung Soo; Oh, Yu Jin; (61 pag.)KR2016/50891; (2016); 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.4769-96-4,6-Nitro-1H-indole,as a common compound, the synthetic route is as follows.,4769-96-4

AddiV-bromosuccinamide (NBS) to 6-nitroindole 1 (22.72 g, 140.12 mmol) dissolved in tetrahydrofuran (600 mL) and allow the resulting mixture to stir for 18 hours. Quench the reaction mixture with saturated aqueous sodium thiosulfate solution (600 mL), dilute with ethyl acetate (EtOAc) (600 mL), and separate the layers. Sequentially, wash the organic layer with saturated aqueous sodium bisulfate (100 mL), saturated aqueous sodium bicarbonate (100 mL), water (100 mL), and brine (100 mL). Dry the resulting organic layer over Na2SO4 and filter. Concentrate the filtrate to give a yellow solid. Recrystallize the solid from dichloromethane and hexane to give 29.21 g of the title compound (86 %). LRMS (API ES+) = 263.0 (M+Na).

The synthetic route of 4769-96-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ELI LILLY AND COMPANY; WO2007/87488; (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.348640-06-2,4-Bromo-7-azaindole,as a common compound, the synthetic route is as follows.

348640-06-2, A solution of 4-bromo-1H-pyrrolo[2,3-b]pyridine (10.0 g, 0.0508 mol) in DMF (40 mL) was cooled under nitrogen to 0 C. Sodium hydride (3.0 g, 0.075 mol) was added portionwise. The reaction was stirred for 1 hour. To this mixture, [2-(trimethylsilyl)ethoxy]methyl chloride (10.8 mL, 0.061 mol) was added slowly. After being stirred at 0 C. for 1 hour, the reaction was quenched with water and extracted with EtOAc twice. The combined extracts were washed with water, brine, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography, eluting with 0-25% EtOAc/hexanes to afford 15.7 g (94.5%) of the desired product as a yellowish oil. LC/MS found: 327.1, 329.1 (M+H)+.

As the paragraph descriping shows that 348640-06-2 is playing an increasingly important role.

Reference£º
Patent; Huang, Taisheng; Xue, Chu-Biao; Wang, Anlai; Kong, Ling Quan; Ye, Hai Fen; Yao, Wenqing; Rodgers, James D.; Shepard, Stacey; Wang, Haisheng; Shao, Lixin; Li, Hui-Yin; Li, Qun; US2011/224190; (2011); 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.1201-26-9,3-Indolylacetone,as a common compound, the synthetic route is as follows.

[0570] Asymmetric reduction applying transaminase TA-P2-A07 was performed in buffer; iso-propyl amine and organic co-solvents such as DMSO or Acetonitrile on 5 g scale. Compound (XXI) was converted to compound (3) as described herein at a degree above 95% with an enantiomeric excess (EE) above 99% after 1 day.

1201-26-9, As the paragraph descriping shows that 1201-26-9 is playing an increasingly important role.

Reference£º
Patent; GENENTECH, INC.; F. HOFFMANN-LA ROCHE AG; CHUNG, Cheol Keun; XU, Jie; IDING, Hans; CLAGG, Kyle; DALZIEL, Michael; FETTES, Alec; GOSSELIN, Francis; LIM, Ngiap-Kie; ZHANG, Haiming; CHAKRAVARTY, Paroma; NAGAPUDI, Karthik; ROBINSON, Sarah; (241 pag.)WO2019/245974; (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

10242-01-0, 5-Methoxy-1H-indole-3-carboxylic acid is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

10242-01-0, General procedure: 60% NaH (0.91 g, 22.8 mmol) was added in portions to a solution of 1b-h (11.2 mmol) in dry DMF (35 mL) at 0-5 C. After addition, the mixture was stirred for 30 min. Iodomethane (33.6 mmol) was then added at 0-5 C and stirred for 2 h at room temperature. The mixture was then poured into H2O (120 mL) and the resulting solution was extracted with ethyl acetate (50 mL ¡Á 3). The organic phase was combined and washed with brine (150 mL ¡Á 3), dried over anhydrous Na2SO4 and concentrated under reduced pressure. The obtained residue was purified by flash column chromatography on silica gel to afford 2b-h.

As the paragraph descriping shows that 10242-01-0 is playing an increasingly important role.

Reference£º
Article; Hu, Yuanyuan; Ruan, Wenchen; Gao, Anhui; Zhou, Yubo; Gao, Lixin; Xu, Meng; Gao, Jianrong; Ye, Qing; Li, Jia; Pang, Tao; Pharmazie; vol. 72; 12; (2017); p. 707 – 713;,
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