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.

To a stirred solution of t-butylamine (16.4 mL, 157 mmol, 5 eq.), in THF (56 mL) at -78C under nitrogen was added slowly n-BuLi (62.6 mL, 157 mmol, 2.5 M in hexanes, 5 eq.). The solution was stirred at -78 oC for 1 h. To the anion was added a solution of 3-trifluoroacetylindole (6) (6.67 g, 31.3 mmol, 1 eq.) in THF (50 mL) at 0 C. The reaction mixture was allowed to gradually warm to rt over 12 h. This was poured onto ice H2O (100 mL) and stirred for 2 h before the aqueous solution was extracted with CH2Cl2 (1 x 65 mL). The entire solution was filtered through Celite to separate the emulsion that formed. The aqueous layer was further extracted with CH2Cl2 (3 x 65 mL). The organic layers were combined, washed with brine (1 x 100 mL), dried (Na2SO4), and concentrated in vacuo to give a dark yellow oil. The oil was purified by flash chromatography (2:1 hexanes: EtOAc) to give 9 as a pale yellow solid (6.76 g, 79%): 1H-NMR (CDCl3) 9.60 (s, 1H), 7.89-7.85 (m, 1H), 7.68 (d, 1H, J 2.8 Hz), 7.41-742 (m, 1H), 7.26-7.21 (m, 2H), 5.94 (s, 1H), 1.55 (s, 9H); 13C-NMR (CDCl3) 165.5, 136.7, 128.5, 124.3, 122.5, 121.3, 119.1, 113.0, 112.5, 51.5, 29.3; IR (film) 3399, 3231, 2964, 1627, 1538, 1449, 1231, 737 cm-1; MS m/z 216 (M+), 161, 144, 116, 89. An analytical sample was obtained via iterative recrystallizations from Et2O: mp 188-190 C. Anal. Calcd for C13H16N2O: C, 72.19; H, 7.46; N, 12.95. Found: C, 72.14; H, 7.41; N, 12.87., 14618-45-2

As the paragraph descriping shows that 14618-45-2 is playing an increasingly important role.

Reference：
Article; Badenock, Jeanese C.; Fraser, Heidi L.; Gribble, Gordon W.; Arkivoc; vol. 2018; 5; (2018); p. 140 – 149;,
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

10075-48-6, 5-Bromo-3-methyl-1H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

10075-48-6, Product is prepared according to procedure described in literature (Fraile, J. M.; Le Jeune, K.; Mayoral, J. A.; Ravasio, N.; Zaccheria, F.; Org. Biomol. Chem. 2013, v:11 , pp: 4327-4332). A solution of 5-bromo-3-methyl-1 H-indole (0.30 g; 1.437 mmol; 1.00 eqf.) in dry THF (5.0 ml), is cooled to 0-5C then NaH (60% immersion in mineral oil) (0.14 g; 2.86 mmol; 2.00 eqf.) is added in small portions over 10 min. RM is stirred for 1 h then lodoethane (0.21 ml; 2.86 mmol; 2.0 eqf.) is added dropwise. Reaction mixture is stirred for next 30 min at 0C and 18 h at rt. After mentioned time RM is poured onto ice and extracted with diethyl ether. Organic layers is washed with brine and dried over Na2S04. Solvent is evaporated in vacuo to provide desired product 5- bromo-1 ,3-dimethyl-1 H-indole (0.355 g; 1.33 mmol; yield 93.2%; 84% by UPLC) is obtained as light yellow oil.

As the paragraph descriping shows that 10075-48-6 is playing an increasingly important role.

Reference：
Patent; SELVITA S.A.; FABRITIUS, Charles-Henry Robert Yves; NOWAK, Mateusz Oktawian; WIKLIK, Katarzyna Anna; SABINIARZ, Aleksandra Barbara; BIE?, Marcin Dominik; BUDA, Anna Ma?gorzata; GUZIK, Pawel Szczepan; JAKUBIEC, Krzysztof Roman; MACIUSZEK, Monika; KWIECI?SKA, Katarzyna; TOMCZYK, Mateusz Micha?; GA??ZOWSKI, Micha? Miko?aj; GONDELA, Andrzej; DUDEK, ?ukasz Piotr; (681 pag.)WO2016/180536; (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.938465-52-2,1-Chloro-5H-pyrido[4,3-b]indole-4-carboxamide,as a common compound, the synthetic route is as follows.

938465-52-2, A mixture of 4-((tert-butyldimethylsilyl)oxy)-2,7-diazaspiro [4.5j decan- 1-one (300 mg, 1.22 mmol), 1-chloro-5H-pyrido[4,3-bjindole-4-carboxamide (417 mg, 1.46 mmol) and DIPEA (630 mg, 4.88 mmol) in 1-methylpyrrolidin-2-one (4 mL) was stirred in a microwave at15OC for 1.5 h. To the mixture was added water (10 mL) and DCM (50 mL). After partition, the aqueous layer was extracted with DCM/i-PrOH (v:v=3: 1, 20 mL x 3). The combined organic layers were washed with brine (10 mL), dried over sodium sulfate, filtered and concentrated to afford the cmde product, which was purified by silica gel columnchromatography (MeOH / DCM = 0% 10 %) to give 1-(4-((tert-butyldimethylsilyl)oxy)- 1 -oxo-2,7-diazaspiro[4. 51 decan-7-yl)-5H-pyrido[4,3-bj indole-4- carboxamide. MS: 494.2 [M+Hf?.

The synthetic route of 938465-52-2 has been constantly updated, and we look forward to future research findings.

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

31241-19-7, 5-Methoxy-2,3,3-trimethyl-3H-indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1.70 g (9.00 mmol) of 2,3,3-trimethyl-6-methoxyindole 1 were weighed and 2.61 g (18.0 mmol) of 2-formylbenzopyrrole was weighed and 0.15 L of a toluene solution was measured.Take organic acid 0.24mL, 0.30mL organic base were heated and stirred, refluxed at 120 for 2 hours, dried and filtered to give a yellow compound 3.Take 1.99 g (4.50 mmol) of the above compound 3, take 35 mL of toluene solution and 2.80 mL of triethylamine, add 2.10 mL (17.50 mmol) of boron trifluoride etherate solution dropwise with stirring under electromagnetic agitation and raise the temperature to 120 C.,Condensing reflux 8 hours, TLC point plate test, the product was washed, extracted, dried, rotary evaporation, filtered to give compound 4:, 31241-19-7

31241-19-7 5-Methoxy-2,3,3-trimethyl-3H-indole 11095392, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; China Three Gorges University; Zhang Nuonuo; Li Yujiao; Yan Jiaying; Cheng Kai; Li Dejiang; (12 pag.)CN105925004; (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

399-67-7, 7-Fluoro-1H-indole-2-carboxylic acid is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: (5-Chloro-7-fluoro-1H-indole-2-yl)-carboxylic acid (5a) (50 mg, 0.23 mmol), N,N-diisopropylethylamine (82 mul, 0.47 mmol) and 2-(7-Aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (89 mg, 0.23 mmol) were dissolved in 550 mul N,N-dimethylformamide. After stirring for 10 min 4-methyl-piperazin 6a (26 mul, 0.23 mmol) was added and the reaction mixture was stirred for 16 h at 20 C. The solvent was evaporated under reduced pressure and the crude product was purified using chromatography method P1, yielding 37 mg (53%) of the title compound.

399-67-7, The synthetic route of 399-67-7 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Engelhardt, Harald; De Esch, Iwan J.P.; Kuhn, Daniel; Smits, Rogier A.; Zuiderveld, Obbe P.; Dobler, Julia; Mayer, Moriz; Lips, Sebastian; Arnhof, Heribert; Scharn, Dirk; Haaksma, Eric E.J.; Leurs, Rob; European Journal of Medicinal Chemistry; vol. 54; (2012); p. 660 – 668;,
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.76644-74-1,1H-Isoindol-3-amine hydrochloride,as a common compound, the synthetic route is as follows.,76644-74-1

To a solution of 3-amino-1H-isoindole hydrochloride (3.25 g, 19.3 mmol) and 5-methyl-3-oxo-hexanoic acid methyl ester (3.35 g, 21.2 mmol) in MeOH (96 mL) was added a 30 wt % sodium methoxide solution in methanol (7.2 mL, 38.5 mmol). The mixture was stirred at room temperature overnight. The volatiles were evaporated and the solid material was washed with hexane/ether to give 3.4 g of 2-isobutylpyrimido[2,1-a]isoindol-4(6H)-one. LC-MS (M+H): 241.1.

76644-74-1 1H-Isoindol-3-amine hydrochloride 2795203, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; TaiGen Biotechnology Co., Ltd.; US2008/292626; (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

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2795-41-7,6-Fluoroindole-3-carboxaldehyde,as a common compound, the synthetic route is as follows.

General procedure: A solution of indol-3-aldehyde 8 (1 mmol) and appropriate acetophenone (1 mmol) in ethanol (25 mL) was refluxed in the presence of piperidine (0.5 mL) for 24 h. After completion of reaction as confirmed by TLC, the mixture was poured into crushed ice (20 g), neutralized with acetic acid. Obtained solid was filtered, washed with cold water (20 mL) and dried and recrystallized from ethanol to obtain pure indolylchalcones 9a-m in 60-70% yields.

2795-41-7, 2795-41-7 6-Fluoroindole-3-carboxaldehyde 262903, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Article; Chaitanya; Reddy, P.O. Venkataramana; Nikhil, Kumar; Kumar, Anil; Shah, Kavita; Kumar, Dalip; Bioorganic and Medicinal Chemistry Letters; vol. 28; 17; (2018); p. 2842 – 2845;,
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.20289-27-4,7-(Benzyloxy)-1H-indole,as a common compound, the synthetic route is as follows.

EXAMPLE 5 Preparation of 3(Pyridin-3-yl)-7-(7-phenylmethoxyindol-3-yl)carbonyl-1H,3H-pyrrolo[1,2-c]thiazole The title compound was prepared by the procedure described in Example 1 using 7-phenylmethoxyindole instead of indole. The crude product was purified by flash chromatography (15 p.s.i.) on 250 g silica gel eluding with 1:1 THF/hexane and then recrystallized from ethyl acetate/ether to afford the title compound. m.p. 184-188 C. 1 H NMR (DMSO-d6, 300 MHz) delta4.45 (d, J=15 Hz, 1H), 4.62 (dd, J=15, 2 Hz, 1H), 6.68 (d, J=3 Hz, 1H), 6.76 (d, J=1 Hz, 1H), 6.85 (d, J=3 Hz, 1H), 6.89 (d, J=8 Hz, 1H), 7.08 (t, J=8 Hz, 1H), 7.31-7.46 (m, 4H), 7.56-7.67 (m, 3H), 7.83 (d, J=8 Hz, 1H), 8.03 (d, J=3 Hz, 1H), 8.53-8.58 (m, 2H), 12.06 (d, J=3 Hz). Anal calcd for C27 H21 N3 O2 S: C, 71.82; H, 4.69; N, 9.31. Found: C, 71.33; H, 4.70; N, 9.16. MS (DCI/NH3) m/e 452 (M+H)+.

20289-27-4, The synthetic route of 20289-27-4 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Abbott Laboratories; US5459152; (1995); 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

923197-75-5, (6-Bromo-1H-indol-2-yl)methanol is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

923197-75-5, To a suspension of (6-bromo-1H-indol-2-yl)methanol (696 mg, 3.00 mmol) in THF (25.0 mL) was added MnO2 (3.20 g, 37.0 mmol) at 0 C. The reaction mixture was stirred for 24 h at room temperature. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure to give the title compound (371 mg, 55%) as an orange solid: 1H NMR (500 MHz, CDCl3) delta 9.86 (s, 1H), 9.07 (br s, 1H), 7.64 (s, 1H), 7.61 (d, J=8.5 Hz, 1H), 7.29 (dd, J=8.5, 1.5 Hz, 1H), 7.24 (d, J=1.0 Hz, 1H).

The synthetic route of 923197-75-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; ALBANY MOLECULAR RESEARCH, INC.; US2012/157469; (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

14618-45-2, 3-(Trifluoroacetyl)indole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a chilled (-780C) solution of 241 mg (1.13 mmol) of 2,2,2-trifluoro-l-(lH-indol-3- yl)ethanone in 5 mL of anhydrous TetaF was added 45 mg (1.13 mmol) of 60% NaH in mineral oil. In another flask, 452 muL (1.13 mmol) of n-BuLi was then added to a chilled (-780C) solution of 310 mg (1.13 mmol) of 5-bromo-l-pyridin-3-yl-lH-indazole in 10 mL of TetaF. After 1 minute, the sodium salt of 2,2,2-trifluoro-l-(lH-indol-3-yl)ethanone was added to the indazole anion via a cannula. After 1 hour, the mixture was diluted with 25 mL of saturated aqueous ammonium chloride and extracted with three 15 mL portions of ethyl acetate. The combined organic layers were washed with three 10 mL portions of brine, dried over magnesium sulfate, filtered and concentrated. The crude material was purified using Combiflash chromatography using EtOAc -hexanes (0-70% gradient) to afford 45 mg (10%) of 2,2,2-trifluoro-l-(lH-indol-3-yl)-l-(l-pyridin-3-yl-lH-indazol-5-yl)ethanol as a colorless solid.

14618-45-2, As the paragraph descriping shows that 14618-45-2 is playing an increasingly important role.

Reference：
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG; WO2008/70507; (2008); 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