Month: August 2020

25834-16-6,25834-16-6, 1,3-Isobenzofurandione, 4,7-dibromo is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

4.7- dibromoisobenzofuran- l ,3-dione (34d) (1.6 g, 5.23 mmol), urea (0.47 g, 7.86 mmol) and xylene (15 ml) were mixed together and heated in a microwave for 30 min at 150C. The resulting reaction mixture was cooled at room temperature and the precipitate so obtained was filtered, washed with water and dried under reduced pressure to afford 4,7-dibromoisoindoline- l ,3-dione (34e) ( 1 g, 62.5%) as a solid. MS (EI) m/z: 305.9 (M+ l). ? NMR (400 MHz, DMSO): 8 1 1.69 (s, 1H), 7.86 (d, J = 8.4 Hz, 2H)..

The synthetic route of 25834-16-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; LUPIN LIMITED; KUKREJA, Gagan; PHUKAN, Samiron; KODAM, Jawahar; MORE, Dattatray, Maruti; URAVANE, Mahesh, Vilas; PALLE, Venkata, P.; KAMBOJ, Rajender, Kumar; WO2013/5157; (2013); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

28418-88-4, 4-Iodoisobenzofuran-1,3-dione is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,28418-88-4

A solution of 3.5 g of 4-heptafluoro-isopropyl-2-methylaniline in 3 ml of acetonitrile was slowly dropped into a suspension of 3.5 g of 1-iodophthalic anhydride in 30 ml of acetonitrile under ice-cooling. After completion of the dropwise addition, the reaction was carried out with stirring at room temperature for 3 hours. After completion of the reaction, the crystals precipitated were collected by filtration and washed with a small volume of acetonitrile to obtain 4.0 g of the desired compound. [0086] Physical property: m.p. 174-181 C. Yield: 57%.

The synthetic route of 28418-88-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Tohnishi, Masanori; Kohno, Eiji; Nakao, Hayami; Nishida, Tateki; Furuya, Takashi; Shimizu, Toshiaki; Seo, Akira; Sakata, Kazuyuki; Fujioka, Shinsuke; US2004/9982; (2004); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.3199-61-9,Ethyl benzofuran-2-carboxylate,as a common compound, the synthetic route is as follows.,3199-61-9

General procedure: To ethyl-1-benzofuran-2-carboxylate (2) (1mmol) containing ethanol was added water (2:1, 30mL) and otassium hydroxide (2mmol). The mixture refluxed for 2h. The reaction was monitored by thin layer chromatography. After completion of the reaction, the reaction mixture was decanted into ice water and extracted the ethyl acetate ayer to give target compounds 3a and 3b. 4.1.2.1. Benzofuran-2-carboxylic acid (3a) White crystal; yield: 85%; mp 190C [mp lit. 191-192C] [50]; 1H NMR (500MHz, DMSO-d6): 7.35 (t, J=7.5Hz, 1H, H5-benzofuran), 7.50 (t, J=7.5Hz, 1H, H6-benzofuran), 7.66 (s, 1H, H3-benzofuran), 7.69 (d, J=8.5Hz, 1H, H7-benzofuran), 7.79 (d, J=7.5Hz, H4-benzofuran), 13.5 (bs, 1H, -OH).

The synthetic route of 3199-61-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Abedinifar, Fahimeh; Farnia, S. Morteza F.; Mahdavi, Mohammad; Nadri, Hamid; Moradi, Alireza; Ghasemi, Jahan B.; Kuecuekk?l?nc, Tuba Tueylue; Firoozpour, Loghman; Foroumadi, Alireza; Bioorganic Chemistry; vol. 80; (2018); p. 180 – 188;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

496-41-3, Benzofuran-2-carboxylic acid is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,496-41-3

General procedure: A mixture of the corresponding carboxylic acid (12.3mmol) and thionyl chloride (6 ml, 83 mmol) in 40 ml of dry dichloromethane (DCM) was stirred under reflux for 6 h. After cooling to room temperature, DCM and excess thionyl chloride were evaporated under reduced pressure. The residue was treated without further purification.

The synthetic route of 496-41-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Sweidan, Kamal; Engelmann, Joern; Rayyan, Walid Abu; Sabbah, Dima; Zarga, Musa Abu; Al-Qirim, Tariq; Al-Hiari, Yusuf; Sheikha, Ghassan Abu; Shattat, Ghassan; Letters in drug design and discovery; vol. 12; 5; (2015); p. 417 – 429;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

54008-77-4, 2-Bromobenzofuran is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,54008-77-4

Tert-butyl 4-(benzofuran-2-yl)benzoate. To a solution of tert-butyl 4-(4,4,5,5- tetramethyl-l,3,2-dioxaborolan-2-yl) benzoate (1.0 g, 3.3 mmol), 2-bromobenzofuran (0.64 g, 3.3 mmol) and tetrakis(triphenylphosphine) palladium(O) (0.5 g, 0.4 mmol) in a mixed solution of 1 ,4-dioxane (20 mL) and water (2.0 mL) was added sodium carbonate(1.0 g, 7.2 mmol). The reaction mixture was stirred at 90C under nitrogen for 12 hours. After the reaction, it was allowed to cool to room temperature, and concentrated in vacuo, then diluted with ethyl acetate (100 mL), washed with water (100 mL). The organic phase was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and the residue was purified by column chromatography (silica gel, ethyl acetate/ petroleum ether = 1 :20) to give the pure product tert- butyl 4-(benzofuran-2-yl)benzoate as a white solid(0.65 g, 67%). 1H NMR (300 MHz, CDC13): delta 8.06 (d, J= 8.7 Hz, 2H), 7.90 (d, J= 8.4 Hz, 2H), 7.62-7.53 (m, 2H), 7.32-7.25 (m, 2H), 7.14 (s, 1H),1.62 (s, 9H).

The synthetic route of 54008-77-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CONSTELLATION PHARMACEUTICALS; ALBRECHT, Brian, K.; AUDIA, James, Edmund; COOK, Andrew; GAGNON, Alexandre; HARMANGE, Jean-christophe; NAVESCHUK, Christopher, G.; WO2013/75083; (2013); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.57319-65-0,6-Aminoisobenzofuran-1(3H)-one,as a common compound, the synthetic route is as follows.,57319-65-0

Example 68; 2-(3-Oxo-l,3-dihydro-isobenzofuran-5-yIcarbamoyl)-pyrrolidine-l-carboxylic acid benzyl ester (Compound 6068)Using General Procedure C from 0.075 g (0.5 mmol) of 6-Amino-3H- isobenzofuran- 1 -one. MS : 381.1 (M+H4). General Procedure C; A mixture of (S)-Pyrrolidine-l,2-dicarboxylic acid 1-benzyl ester (F.W. = 249.27, 0.15 g, 0.6 mmol), HATU (F.W. = 380.25, 0.209 g, 0.55 mmol), and DIEA (0.1 mL, 0.76 mmol) in DMF (5 mL) was stirred at room temperature for 1 h.. This mixture had to be prepared each time for the reactions of the amines described in the following Examples. The individual mixtures were stirred at room temperature for 20 h., then filtered and separated by reverse phase HPLC (20-100% of buffer B; buffer A: water containing 0.1% TFA; buffer B: MeCN containing 0.1%TFA). The combined fraction was evaporated to dryness to furnish the desired products.

The synthetic route of 57319-65-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; GENELABS TECHNOLOGIES, INC.; WO2007/70556; (2007); A2;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.58546-89-7,Benzofuran-5-amine,as a common compound, the synthetic route is as follows.,58546-89-7

To a suspension of 7-chloro-3-(4-fluorophenyl)pyrazolo[ 1 ,5-a]pyrimidine (350 mg, 1.42 mmol) in anhydrous acetonitrile (10 mL), was added DIPEA (740 muL, 4.25 mmol) and benzofuran-5 -amine (270 mg, 2.03 mmol). The mixture was stirred at 170 0C for 3 x 15 minutes, under microwave activation, then cooled to room temperature. Upon cooling a crystalline solid precipitated, this solid was filtered, washed with acetonitrile and dried in vacuo, giving 320 mg (66 %) of the title compound. LC-MS RT= 2.36 min, MH+ = 345.2. 1H NMR (de-DMSO): 10.15 (IH, s), 8.78 (IH, s), 8.30-8.23 (3H, m), 8.10 (IH, d, J2.2), 7.77 (IH, d, J2.2), 7.73 (IH, d, J 8.6), 7.43 (IH, dd, J 8.6 &; 2.2), 7.28 (2H, t, J 9.0), 7.04 (IH, d, J2.3), 6.25 (IH, d, J5.2).

The synthetic route of 58546-89-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BioMarin IGA, Ltd.; WREN, Stephen Paul; WYNNE, Graham Michael; LECCI, Cristina; WILSON, Francis Xavier; WO2010/86040; (2010); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

610-93-5, 6-Nitroisobenzofuran-1(3H)-one is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,610-93-5

General procedure: The catalytic reduction of nitro aromatics was conducted in a 25 mlTelfon-lined stainless steel autoclave with magnetic stirring. In a typicalprocess, 6 mmol nitroarene, and desired amounts of reducing agent andsolvents were introduced in the reactor. The autoclave was transferredinto a water bath at the set temperature with an accuracy of better than0.2 C for ?0.5 h. Then, 10 mg catalyst was added into the reactionmixture and started the reduction at a stirring rate of 450 rpm. After thereaction, the catalyst was rapidly separated by ltration. n-Decane(500 muL) as standard was added into the ltrate and was dried withanhydrous Na 2 SO 4 . The products were analyzed by gas chromato-graphy-mass spectrometry (GC-MS) (Shimadzu GCMS-QP2010 Plus)and GC (Varian CP-3800) with a capillary column (column VF-1 ms,15 m, 0.25 mm, 0.25 mum) and a ame ionization detector (FID).

The synthetic route of 610-93-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Huang, Haigen; Liang, Xiangcheng; Wang, Xueguang; Sheng, Yao; Chen, Chenju; Zou, Xiujing; Lu, Xionggang; Applied Catalysis A: General; vol. 559; (2018); p. 127 – 137;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

652-39-1, 4-Fluoroisobenzofuran-1,3-dione is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,652-39-1

In a 50 ml flask was placed 3-Fluorophthalic anhydride (1.0 g, 6 mmol) and aqueous NH3 (1.6 g, 24 mmol). The mixture was heated to 280 0C within 30 minutes and then the flask was cooled to room temperature. 0.93 g of compound 13 were isolated as a yellow solid. LC-MS (ESI, positive): 166 [M+H]+.

The synthetic route of 652-39-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; PHENOMIX CORPORATION; WO2008/86161; (2008); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

69999-16-2, 2,3-Dihydrobenzofuranyl-5-acetic acid is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,69999-16-2

(A) Preparation of 5-(2-hydroxyethyl)-2,3-dihydrobenzofuran STR76 A solution of (2,3-dihydrobenzofuran-5-yl)acetic acid (4.9 g — see EP-A-132130) in anhydrous tetrahydrofuran (50 ml) was added over 10 minutes, dropwise, to a stirred suspension of lithium aluminium hydride (1.57 g) in anhydrous tetrahydrofuran (50 ml) at 0. The mixture was allowed to warm to room temperature and stirred for 1 hour. Water (1.5 ml) was then added dropwise with caution followed by 10% aqueous sodium hydroxide (1.5 ml) and, finally, water (4.5 ml). The mixture was filtered and the inorganic salts washed with ethyl acetate (2*50 ml). The filtrate and washings were combined and concentrated in vacuo to give the title compound as an oil, yield 3.3 g. 1 H N.M.R. (CDCl3) delta=7.10 (s, 1H); 7.00 (d, 1H); 6.75 (m, 1H); 4.65-4.55 (m, 2H); 3.90-3.75 (m, 2H); 3.30-3.15 (m, 2H); 2.90-2.80 (m, 2H); 1.85-1.75 (brs, 1H) ppm.

The synthetic route of 69999-16-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Pfizer Inc.; US5192765; (1993); A;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem