Day: March 15, 2022

900514-08-1, 5-Chloro-3-iodo-7-azaindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

900514-08-1, To a solution of 5-chloro-3-iodo-1H-pyrrolo[2,3-b]pyridine (2, 5.00 g, 18.0 mmol) in 80.0 mL of N,N-dimethylformamide, sodium hydride (1.1 g, 60% in mineral oil, 27.0 mmol) was added slowly. A solution of benzenesulfonyl chloride (11, 2.40 mL, 18.8 mmol) in 10.0 mL of N,N-dimethylformamide was added dropwise at 0 C. The reaction mixture was stirred at room temperature for 15 hours, then poured into ice water and extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, filtered and the filtrate concentrated under vacuum. The resulting solid was washed with 5% ethyl acetate in hexane, isolated by filtration, and dried to provide the desired compound (12, 5.9 g). 1H NMR was consistent with the compound structure. 1-Benzenesulfonyl-3-iodo-5-methyl-1H-pyrrolo[2,3-b]pyridine 13

900514-08-1 5-Chloro-3-iodo-7-azaindole 24229220, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; Plexxikon Inc.; Zhang, Jiazhong; Ibrahim, Prabha N.; Bremer, Ryan; Spevak, Wayne; Cho, Hanna; US9096593; (2015); B2;,
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

A synthetic procedure was based on the literature method [15] with some modifications. A solution of 5-methoxy-2,3,3-trimethyl-3H-indole (0.502 g, 1.60 mmol) and 2-bromoethanol (0.198 g, 2.00 mmol) in MeCN (20 mL) was maintained under N2 and heated under reflux for 1 day. After the mixture was cooled to ambient temperature, the solvent was distilled off under reduced pressure. The resulting solid was recrystallized from CHCl3 (35 mL), then filtered and dried, to afford the targeted compound in high yield (68%)., 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：
Article; Li, Hong; Pang, Meili; Wu, Bianpeng; Meng, Jiben; Journal of Molecular Structure; vol. 1087; (2015); p. 23 – 29;,
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

4792-71-6,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4792-71-6,5,7-Dichloro-1H-indole-2-carboxylic acid,as a common compound, the synthetic route is as follows.

EXAMPLE 102 R-Methyl 2-[(5-7-dichloro-1H-indole-2-carbonyl)-amino]-3-phenyl-propionate From 5,7-dichloro-1H-indole-2-carboxylic acid and D-phenylalanine methyl ester. 1 H NMR (300 MHz, CDCl3) delta 3.25 (m, 2H), 3.80/3.95 (s, 3H), 5.10 (m, 1H), 6.62 (d, 6 Hz, 1H), 6.69 (d, 2 Hz, 1H), 7.10-7.15 (m, 2H), 7.25-7.35 (m, 3H), 7.50-7.56 (s, 1H), 9.35 (br, 1H).

As the paragraph descriping shows that 4792-71-6 is playing an increasingly important role.

Reference：
Patent; Pfizer, Inc.; US6107329; (2000); 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.1065181-58-9,Ethyl 5-bromo-1H-indole-7-carboxylate,as a common compound, the synthetic route is as follows.

Intermediate 25:Ethyl 5-bromo-3-(tetrahydro-3-thienyl)-1H-indole-7-carboxylate.Dihydro-3(2H)-thiophenone (0.381 g, 3.73mmol) was dissolved in dichloromethane (50ml) in an oven dried flask containing 3A molecular sieves and stirred under Argon at O0C. TMS-OTf (0.826g, 3.73mmol, 0.67 ml.) was added slowly to the mixture over 10 min. Ethyl 5-bromo-1 /-/-indole-7-carboxylate (1 g, 3.73mmol) was dissolved in DCM (6 ml.) and added to the reaction via syringe pump over 2 hours, after which it was stirred for 30 min at 0 0C. Triethylsilane (0.651 g, 0.89ml, 5.59mmol) was then added all at once and the reaction was stirred at room temperature for 18 hours. The reaction was then quenched with a saturated sodium bicarbonate solution (35 ml.) and extracted with DCM (2 x 50 ml_). The combined organics were washed with water (2 x 100 ml_), brine, dried with MgSO4, and concentrated. The crude compound was purified on Combiflash silica column with 10% EA/Hexane to give 0.62Og (47%) of the title compound. LCMS m/z =355 (M+H), RT = 1.34 min., 1065181-58-9

The synthetic route of 1065181-58-9 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; SMITHKLINE BEECHAM CORPORATION; WO2008/118724; (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.5192-03-0,1H-Indol-5-amine,as a common compound, the synthetic route is as follows.

A mixture of 2-amino-4,6-dichloropyrimidine (1.64 g, 10 mmol), 5-aminoindole (1.32 g, 10 mmol), diisopropylethylamine (5.23 ml, 30 mmol) and N,N-dimethylformamide (30 ml) was heated at 60C and stirred overnight under nitrogen atmosphere. The reaction mixture was partitioned between ethyl acetate and water after cooled to room temperature; and the organic layer was washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was distilled off; the obtained residue was dissolved in tetrahydrofuran (100 ml); 10% Palladium on carbon (50% wet, 1.0 g) was added thereto under nitrogen atmosphere; and the reaction mixture was stirred for 4 days under hydrogen atmosphere at atmospheric pressure. The reaction system was purged with nitrogen; the catalyst was filtered off; the filtrate was concentrated under reduced pressure; the residue was purified by NH silica gel column chromatography (eluent; ethyl acetate: methanol = 95: 5); diethyl ether was added to the residue to crystallize; and the crystals were filtered off, and dried under aeration to yield the title compound (852 mg, 3.8 mmol, 38%) as pale brown crystals. 1H-NMR Spectrum (DMSO-d6) delta (ppm): 5.89 (1H, d, J=5.6 Hz), 5.99 (2H, brs), 6.34 (1H, s), 7.12 (1H, d, J=8.4 Hz), 7.20-7.40 (2H, m), 7.70 (1H, d, J=5.6 Hz), 7.79 (1H, s), 8.73 (1H, s), 10.95 (1H, s).

5192-03-0, 5192-03-0 1H-Indol-5-amine 78867, aindole-building-block compound, is more and more widely used in various fields.

Reference：
Patent; Eisai Co., Ltd.; EP1522540; (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