Category: benzofuran

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.10035-16-2,Benzofuran-5-carbaldehyde,as a common compound, the synthetic route is as follows.

To a solution of aldehyde (400 g) in ether (10 ml) was added LiN(TMS)2 (1 M in THF, 3.3 ml) at 0 C. dropwise. The solution was stirred at 0 C. for 30 min and EtMgBr (3M in THF, 1.83 ml) was added dropwise. The reaction was refluxed overnight, cooed to 0 C., quenched with saturated ammonium chloride and extracted with ether. The ether was stirred with 3N HCl (20 ml), then the aqueous layer was basified with NaOH pellets and extracted with ether. The ether layer was washed with brine, dried with MgSO4, filtered and concentrated in vacuo to give 220 mg of product (46%).

The synthetic route of 10035-16-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Schering Corporation; US2004/106794; (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.66826-78-6,5-Bromo-2,3-dihydrobenzofuran,as a common compound, the synthetic route is as follows.

(i) Production of Ethyl 2,3-Dihydronaphtho[2,3-b]furan-6-carboxylate 5-Bromo-2,3-dihydrobenzofuran (38.86 g), which was prepared according to the literature (Alabaster, Ramon J. et al., Synthesis, 1988, vol. 12, pp950.), was dissolved in THF (300 mL) and cooled to -78 C. n-Butyl-lithium in hexane (1.6M; 160 mL) was added to the solution and stirred for 30 min. DMF (40 mL) was added to the mixture and was allowed to warm to room temperature. Water was added to the mixture and the solvent was evaporated. The residue was diluted with ethyl acetate, washed with water and brine, dried and concentrated to give crude product of 5-formyl-2,3-dihydrobenzofuran (28.47 g) as an oil.

As the paragraph descriping shows that 66826-78-6 is playing an increasingly important role.

Reference£º
Patent; Takeda Chemical Industries, Ltd.; US6649643; (2003); B1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

59434-19-4, 4-Aminophthalide is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred mixture of 3-(diethoxymethyl)benzaldehyde (3.75 g, 18 mmol) and anhydrous sodium sulfate (21.3 g, 150 mmol) in anhydrous dichloromethane (300 mL) was added 4-aminoisobenzofuran-1(3H)-one (2.24 g, 15 mmol) at 0 C. After the addition, the mixture was stirred at room temperature for 6 days. The mixture was filtered and the cake was washed with dichloromethane (50 mL¡Á3). The filtrate was concentrated to give crude product. The crude product was washed with petroleum ether to give (E)-4-(3-(diethoxymethyl)benzylideneamino)isobenzofuran-1(3H)-one (3.1 g, yield 61%) as a white solid. LC-MS (ESI) m/z: 340 (M+1)+

59434-19-4 4-Aminophthalide 12284649, abenzofuran compound, is more and more widely used in various.

Reference£º
Patent; LEAD THERAPEUTICS, INC.; US2010/35883; (2010); 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.77095-51-3,Benzofuran-6-carboxylic acid,as a common compound, the synthetic route is as follows.

l-benzofuran-6-carboxylic acid (5.0 g) was charged in dichloromethane and added thionyl chloride (4.5 g) followed by stirring to get clear solution. The solvent was removed under reduced pressure, MDC (20 ml) was charged to the residue. The acid chloride, in methylene chloride was added slowly to a solution of (S)-2-(5,7-dichloro-l,2,3,4- tetrahydroisoquinoline-6-carboxamido)-3-(3-(methyl sulfonyl)phenyl)propanoic acid (13.8 g) and diisopropylethyl amine (10 ml) below 5C. Reaction mass was stirred at 0-5C till, completion of reaction. Reaction mass was then quenched with water 25ml. Layers were separated and organic layer washed with sodium bicarbonate solution. Organic layer concentrated to get crude Lifitegrast. Crude lifitegrast was recrystaliized in acetone. (13 g, yield-72.8%)

77095-51-3 Benzofuran-6-carboxylic acid 17867234, abenzofuran compound, is more and more widely used in various.

Reference£º
Patent; MANKIND PHARMA LTD.; BHAVSAR, Jigar Tarun Kumar; TIWARI, Rakesh; BHASHKAR, Bhuwan; KUMAR, Anil; (30 pag.)WO2019/73325; (2019); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

1914-60-9, 2,3-Dihydrobenzofuran-2-carboxylic acid is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To Intermediate 7 (0.05 g, 0.14 mmol) were added HATU (0.11 g, 0.28 mmol) and the appropriate carboxylic acid (0.18 mmol). The mixture was dissolved in DMF (5 mL) and DIPEA (0.11 mL, 0.64 mmol) was added. The mixture was stirred under nitrogen at r.t. for 72 h. The residue was concentrated in vacuo and purified by preparative HPLC, to yield the title compound as an off-white solid.

1914-60-9 2,3-Dihydrobenzofuran-2-carboxylic acid 2776555, abenzofuran compound, is more and more widely used in various.

Reference£º
Patent; UCB PHARMA S.A.; KATHOLIEKE UNIVERSITEIT LEUVEN, K.U.LEUVEN R&D; FORD, Daniel James; FRANKLIN, Richard Jeremy; GHAWALKAR, Anant Ramrao; HORSLEY, Helen Tracey; HUANG, Qiuya; REUBERSON, James Thomas; VANDERHOYDONCK, Bart; WO2014/96423; (2014); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

66826-78-6, 5-Bromo-2,3-dihydrobenzofuran is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

PREPARATION 108 2,3-Dihydrobenzofuran-5-ylboronic Acid Obtained as a colourless solid (38%), m.p. >240 C.(decomp.), from 5-bromo-2,3-dihydrobenzofuran (Synthesis, 1988, 952) and trimethyl borate, using the procedure of Preparation 101. delta(DMSOd6): 3.33 (t,2H), 4.48 (t,2H), 6.68 (d,1H), 7.56 (d,1H), 7.63 (s,1H), 7.70 (brs,2H).

66826-78-6 5-Bromo-2,3-dihydrobenzofuran 2776159, abenzofuran compound, is more and more widely used in various.

Reference£º
Patent; Pfizer INC; US6387931; (2002); B1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7169-34-8,Benzofuran-3(2H)-one,as a common compound, the synthetic route is as follows.

General procedure: A mixture of benzofuran-3(2H)-one (2.0 mmol), benzaldehyde (2.2mmol) and water (5 mL) was stirred at reflux temperature for 6-10 h. Completion of the reaction was checked on TLC. Then the mixture was allowed to rt and stirred for 1 h. The precipitated solids were filtered, washedwith water (2 ¡Á 5 mL) and dried to give the product.

The synthetic route of 7169-34-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Venkateswarlu, Somepalli; Murty, Gandrotu Narasimha; Satyanarayana, Meka; Arkivoc; vol. 2017; 4; (2017); p. 303 – 314;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.77095-51-3,Benzofuran-6-carboxylic acid,as a common compound, the synthetic route is as follows.

An oven-dried flask was charged with 2 (40 mg, 0.103 mmol), EDC.HCl (29.5 mg, 0.154 mmol), DMAP (18.8 mg, 0.154 mmol), and the appropriate acid (0.154 mmol). To the flask was added CH2CI2 (8 mL). After stirring overnight at RT the reaction was quenched with HC1 (1 M, 8 mL) and the organic layer rinsed sequentially with saturated NaHCCh (8 mL) and brine (8 mL) then dried over NarSOu The solvent was removed in vacuo and the resulting residue purified by flash column chromatography (?FCC?) eluting with 30-35% EtOAc/Pent. Compounds <95% pure as indicated by HPLC were further purified by reverse phase semi -preparatory HPLC. 77095-51-3 Benzofuran-6-carboxylic acid 17867234, abenzofuran compound, is more and more widely used in various. Reference£º
Patent; UNIVERSITY OF KANSAS; VICTORIA LINK LIMITED; PRISINZANO, Thomas E.; CROWLEY, Rachel Saylor; DAKEN, Bronwyn Maree; (56 pag.)WO2019/99588; (2019); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

174775-48-5, Ethyl 5-aminobenzofuran-2-carboxylate is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: An oven-dried Schlenk tube (A) equipped with a magnetic stir bar was charged with AgF (132.2 mg, 1.05 mmol, 3.5 equiv), sealed with a septum, and degassed by alternating vacuum evacuation and nitrogen backfill (three times) before freshly distilled EtCN (3 mL)was added. To the resulting suspension, which was precooled to -78 C (dry ice-acetone bath), was added TMSCF3 (149.3 mg, 1.05 mmol, 3.5 equiv) by microsyringe. The mixture was allowed towarm to r.t. and stirring was continued for an additional 15 min. In due course, AgF solid dissolved and a gray, dark solution of [Ag-CF3] formed. Another Schlenk tube (B) equipped with a magnetic stir bar was charged with the aniline (ArNH2; 0.30 mmol, 1.0 equiv) in freshly distilled EtCN (1.5 mL). To the resulting solution, which was precooled to 0 C (ice bath), aq HCl (12 M; 50.0 muL, 0.60mmol, 2.0 equiv) was added; precipitate formed immediately. After 5 min stirring, t-BuONO (37.7 mg, 0.33 mmol, 1.1 equiv) was added by microsyringe, and the mixture was allowed to stir at 0 C for 15 min. The resulting suspension in Schlenk tube (B) was degassed by alternating vacuum evacuation at -196 C (liquid nitrogen), then the solution was allowed to warm to r.t. under a nitrogen atmosphere (three times), and finally cooled to -78 C (dry ice-acetone bath). The gray, dark solution of [AgCF3] in Schlenk tube (A), which was precooled to -78 C (dry ice-acetone bath), was added to Schlenk tube (B) (ArN2+Cl-) by syringe at -78 C (dry ice-acetone bath) over a period of 1 h. After the addition was complete, the reaction mixture was stirred for 3 h at -78 C (dry ice-acetone bath), allowed to warm to r.t., and stirring was continued for an additional 1 h. An off-white precipitate was observed, and the reaction mixture was diluted with EtOAc (3 mL) and filtered through a short silica gel column. The solvent was removed under reduced pressure with a rotatory evaporator, and the crude residue was purified by silica gel column chromatography to give the desired trifluoromethylation product 3. The yields of products 3a, 3f, 3g, 3l, 3o, 3r, 3x, and 3zb are based on the 19F NMR spectra with 4-F3COC6H4OMe as internal standard. Analytical data for the representative product ethyl 4-(trifluoromethyl)benzoate (3i) are provided below. Data for other products can be found in the literature.

#N/A

Reference£º
Article; Wang, Xi; Xu, Yan; Zhou, Yujing; Zhang, Yan; Wang, Jianbo; Synthesis; vol. 46; 16; (2014); p. 2143 – 2148;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

128851-73-0, 6-Bromobenzofuran is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a mixture of 6-bromobenzofuran ( 1.0 g, 5.1 mmol) in tetrahydrofuran (15 mL) was added magnesium (0.19 g, 7.6 mmol) and 1,2-dibromoethane (95 mg, 0.51 mmol). The mixture was stirred at 70 C for 2 hours, and then the reaction was stirred at -40 C under carbon dioxide gas overnight. On completion, the mixture was poured into water and washed with ethyl acetate. The aqueous phase was adjusted to pH=5.0 with hydrochloric acid, resulting in formation of a solid. The solid was collected by filtration and dried in vacuo to give compound B-128 (0.20 g, 24% yield) as a yellow solid.

The synthetic route of 128851-73-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; FORUM PHARMACEUTICALS, INC.; ACHARYA, Raksha; BURNETT, Duane, A.; BURSAVICH, Matthew, Gregory; COOK, Andrew, Simon; HARRISON, Bryce, Alden; KOENIG, Gerhard; MCRINER, Andrew, J.; (400 pag.)WO2016/100184; (2016); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem