Tag: M.W:100-200

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.

77095-51-3, 16.05 g (0.10 mol) of benzofuran-6-carboxylic acid (compound III) were added over a suspension of 16.05 g (0.10 mol) of 1 ,T-carbonyldiimidazole in 400 mL of ethyl acetate at 20-25 C, under nitrogen atmosphere. The mixture was stirred at 20-25 C for 1 hour, and the resulting solution was added over a mixture of 53.8 g (0.09 mol) of crude hydrochloride salt of benzyl (S)-2-(5,7-dichloro-1 ,2,3,4-tetrahydroisoquinoline-6- carboxamido)-3-[3-(methylsulfonyl)phenyl]propanoate (compound IV) as obtained in Example 1 and 37.6 ml. (0.22 mol) of /V,/V-diisopropylethylamine in a mixture of 200 ml. of ethyl acetate and 55 ml. of dimethylsulfoxide at 20-25 C. The resulting mixture was stirred at this temperature for 18 hours. 1.05 L of 0.5 M hydrochloric acid and 500 ml. of ethyl acetate were added. The organic phase was extracted, washed with 2 x 500 ml. of 4% (w/w) aqueous sodium bicarbonate and with 500 ml. of deionized water, in sequence. The organic layer was concentrated to dryness under reduced pressure, to give 63.1 g of benzyl (S)-2-[2-(benzofuran-6-carbonyl)-5,7-dichloro-1 ,2,3,4-tetrahydroisoquinoline-6- carboxamido]-3-[3-(methylsulfonyl)phenyl]propanoate (compound II) as a yellowish solid.

As the paragraph descriping shows that 77095-51-3 is playing an increasingly important role.

Reference£º
Patent; MEDICHEM, S.A.; BIN, Zhu; LINGXIANG, Rao; PUIG SERRANO, Jordi; DURAN LOPEZ, Ernesto; (28 pag.)WO2019/96996; (2019); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

23145-07-5, 5-Bromobenzofuran is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

23145-07-5, A solution of 5-bromobenzofuran (950 mg, 4.82 mmol) in anhydrous ether (12 mL) was cooled to-78 ¡ãC. 1.7 M tert-BuLi solution in pentane (6 ml, 10.2 mmol) was added dropwise under argon. After addition, the mixture was stirred at-78 ¡ãC for 20 min, followed by addition of a mixture of DMF (0.8 mL) and ether (1 mL). The mixture was allowed to warm to rt and stirred for 0.5 h. Ethyl acetate was added. The mixture was poured to saturated ammonium chloride solution. The organic layer was separated and concentrated. The residue was purified by column chromatography (ethyl acetate-hexanes, 1: 5 v/v) to give the title compound as a pale yellow solid (490 mg, 70percent).

The synthetic route of 23145-07-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SCHERING CORPORATION; PHARMACOPEIA DRUG DISCOVERY, INC.; WO2005/68460; (2005); 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.54008-77-4,2-Bromobenzofuran,as a common compound, the synthetic route is as follows.

54008-77-4, General procedure: In a hot oven-dried Schlenk tube under N2 atmosphere were added Ph3Bi (0.25 mmol, 110 mg, 1.0 equiv), 2-bromobenzofuran (0.825 mmol, 163 mg, 3.3 equiv), Cs2CO3 (0.75 mmol, 244 mg, 3.0 equiv), Pd(OAc)2 (0.025 mmol, 5.6 mg, 0.1 equiv), PPh3 (0.1 mmol, 26 mg, 0.4 equiv), and NMP (3 mL) solvent. The resulting mixture was stirred in preheated oil bath at 90 C for 1 h. After the reaction is over, the mixture was cooled, quenched with dil HCl and extracted with ethyl acetate. The combined organic extract was washed with water, brine, and dried over MgSO4 and concentrated. The crude was subjected to silica gel column chromatography (230-400 mesh) using petroleum ether as the eluent to obtain the pure 2-phenylbenzofuran (2.1) as a white solid (140 mg, 96%). The product was characterized by spectroscopy and in comparison with the literature data.

54008-77-4 2-Bromobenzofuran 2776264, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Article; Rao, Maddali L.N.; Awasthi, Dheeraj K.; Talode, Jalindar B.; Tetrahedron Letters; vol. 53; 21; (2012); p. 2662 – 2666;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1914-60-9,2,3-Dihydrobenzofuran-2-carboxylic acid,as a common compound, the synthetic route is as follows.

General procedure: To a mixture of 7 (1 eq) and 1,1?-carbodiimidazole (1.2 eq) in anhydrous THF was stirred for 1h then substituted aniline (0.9 eq) was added at room temperature. After stirring for 14 h, solvent was evaporated then the mixture acidified with 6N HCl to pH 2. The mixture was extracted with EtOAc (3 ¡Á 20 mL). The combined extracts were dried over anhydrous Na2SO4and the solvent was evaporated. After evaporation, the residue was purified by column chromatography (EtOAc/hexane = 1:3 – 1:50).

1914-60-9, The synthetic route of 1914-60-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Choi, Minho; Jo, Hyeju; Park, Hyun-Jung; Sateesh Kumar, Arepalli; Lee, Joonkwang; Yun, Jieun; Kim, Youngsoo; Han, Sang-Bae; Jung, Jae-Kyung; Cho, Jungsook; Lee, Kiho; Kwak, Jae-Hwan; Lee, Heesoon; Bioorganic and Medicinal Chemistry Letters; vol. 25; 12; (2015); p. 2545 – 2549;,
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, 3-fluoropurine (5.0 g, 30 mmol),3-aminopiperidine-2,6-dione hydrochloride (5.0 g, 30 mmol) andSodium acetate(3.7g, 45mmol)Add 100 mL of acetic acid. Heat to reflux for 12 h.Cool to room temperature and evaporate the acetic acid. Add 100 mL of water, extract 100 mL¡Á3 of ethyl acetate, and combine the organic phases with evaporated toluness.The compound (1a) was obtained in an amount of 7.5 g, and the yield was 90%.

652-39-1 4-Fluoroisobenzofuran-1,3-dione 69551, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Patent; Jilin University; Lu Haibin; Mu Xupeng; Bai Liting; Gao Zhuolin; Wang Ying; Zhao Linxuan; (23 pag.)CN109879877; (2019); A;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.610-93-5,6-Nitroisobenzofuran-1(3H)-one,as a common compound, the synthetic route is as follows.,610-93-5

(a) 6-Nitrophthalide (14.0 g; J A Houbion, J A Miles and J A Paton, Organic Preparations and Procedures International, 11 (1), 27, 1979) in solution in acetic acid was hydrogenated over a palladium on carbon catalyst to give 6-aminophthalide (12.0 g; W R Vaughan and S L Baird, J. Amer. Chem. Soc. 68, 1314, 1946).

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

Reference£º
Patent; ICI Australia Limited; US4409017; (1983); A;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

16859-59-9, 3-Hydroxyisobenzofuran-1(3H)-one is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 4: Alternative synthesis of Compound DE ED D(a) 2-Fluoro-5-[(E/Z)-(3-oxo-2-benzofuran- 1 (3H)-ylidene)methyl]benzonitrile (E) Sodium t-amylate (99.00 g, 0.854 mol) and 2-methyltetrahydrofuran (960 ml) were cooled to 2¡ãC under a nitrogen atmosphere. Diethyl phosphite (110 ml, 0.855 mol) was added dropwise maintaining the temperature at <5¡ãC. 2-Methyltetrahydrofuran (40 ml) was added as line wash. The reaction was stirred at 2¡ãC for 1 hour 40 minutes. A solution of 2-carboxybenzaldehyde (H)(80 g, 0.533 mol) in 2-methyltetrahydrofuran (200 ml) was added, maintaining the temperature at <7¡ãC throughout the addition. A line wash of 2-methyltetrahydrofuran (40 ml) was added. The reaction mixture was warmed to 200C and held at 200C for 20 minutes. Methanesulphonic acid (66 ml, 1.01 mol) was added over 1 hour and 10 minutes, followed by 2- methyltetrahydrofuran (40 ml). The reaction mixture was stirred at 20¡ãC over night. Methanesulphonic acid (7 ml, 0.101 mol) was added, followed by 2-methyltetrahydrofuran (7 ml) and the reaction stirred at 2O0C for a further 4 hours. Water (400 ml) was added at room temperature and the resulting biphasic mixture stirred at room temperature for 20 minutes. The lower aqueous layer was removed and a solution of potassium bicarbonate (53.50 g, 0.534 mol) in water (400 ml) was added to the organic layer. The biphasic mixture was stirred at room temperature for 20 minutes and then the lower aqueous solution was removed. The organic fraction was retained (solution of diethyl (3-oxo1 ,3-dihydro-2-benzofuran-1-yl)phosphonate). 16859-59-9, As the paragraph descriping shows that 16859-59-9 is playing an increasingly important role.

Reference£º
Patent; KUDOS PHARMACEUTICALS LIMITED; WO2008/47082; (2008); A2;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

10242-10-1, 5-Chlorobenzofuran-2-carboxylic acid is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Toa solution of (3S, 3aS) -3- (aminomethyl) -8- (3-oxomorpholino) -3, 3a, 4,5-tetrahydro-1H-benzo [b] oxazolo [3, 4-d] [1, 4] oxazepin-1-one (30 mg, 0.090mmol) and 5-chlorobenzofuran-2-carboxylic acid (20 mg, 0.10 mmol) indichloromethane (10 mL) were added 4-dimethylaminopyridine (28 mg, 0.23 mmol)and 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride (35 mg, 0.18mmol) . The mixture was reacted at rt for 10 hours. The reaction mixture wasconcentrated in vacuo to remove the solvent, and the residue was purified bysilica gel chromatography eluted with PE/EtOAc (V/V) 1/4 to give the titlecompound as a white solid (11 mg, 24) . The compound was characterized by thefollowing spectroscopic data: MS (ESI, pos. ion) m/z: 512.2 (M+1) and 1HNMR (400 MHz, CDCl3) : delta 7.68 (d, J 1.8 Hz, 1H) , 7.53 -7.40 (m,4H) , 7.15 (t, J 6.3 Hz, 1H) , 7.12 (d, J 2.3 Hz, 1H) , 7.02 (dd, J 8.6,2.4 Hz, 1H) , 4.55 -4.47 (m, 2H) , 4.33 (s, 2H) , 4.05 -4.00 (m, 2H) , 3.89 -3.69(m, 6H) , 2.35 -2.14 (m, 2H) ., 10242-10-1

10242-10-1 5-Chlorobenzofuran-2-carboxylic acid 937838, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Patent; SUNSHINE LAKE PHARMA CO., LTD.; ZHANG, Jiancun; ZUO, Yinglin; ZHANG, Yingjun; WANG, Xiaojun; ZHANG, Jin; WEN, Liang; CHENG, Guanjun; WO2015/110024; (2015); 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.10242-08-7,5-Methoxybenzofuran-2-carboxylic acid,as a common compound, the synthetic route is as follows.

Example 137 Preparation of 5-Methoxybenzofuran-2-carboxylic acid {(S)-1-[1-(2-cyano-benzenesulfonyl)-3-oxo-azepan-4-ylcarbamoyl]-3-methyl-butyl}-amide Following the procedure of Example 75, except substituting 2-cyanophenylsulfonyl chloride for thiazole-2-sulfonyl chloride and 5-methoxybenzofuran-2-carboxylic acid for benzofuran-2-carboxylic acid, the title compound was prepared. The residue was purified by HPLC. First eluding diastereomer; MS (M+H+): 581.4; 1H-NMR (400 MHz, CDCl3):. 8.15-8.13(d, 1H), 7.92-7.90(d, 1H), 7.81-7.74(m, 2H), 7.42-7.40(m, 2H), 7.08-7.03(m, 3H), 6.96(d, 1H), 5.10(m, 1H), 4.72-4.60 (m, 2H), 4.17 (d, 1H), 3.85(s, 3H), 3.75-3.70(d, 1H), 2.83-2.76(t, 1H), 2.27(m, 2H), 1.92-1.51(m, 5H), 1.02-1.01(m, 6); and the second eluding diastereomer: MS (M+H+) 581.2., 10242-08-7

10242-08-7 5-Methoxybenzofuran-2-carboxylic acid 288638, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Patent; SmithKline Beecham Corporation; US2003/144175; (2003); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

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

3-Fluorophthalic anhydride (377 mg, 2.27 mmol) was dissolved in MeOH (6 ml_) and heated to reflux for 15 h. The mixture was concentrated in vacuo and the two products (400 mg, 89percent), 2-fluoro-6-(methoxycarbonyl)benzoic acid and 3-fluoro-2- (methoxycarbonyl)benzoic acid, were taken on to the next step without purification.; Step B: (Z)-Methyl 2-((((1 -aminoethylidene)amino)oxy)carbonyl)-3- fluorobenzoate. To a heterogeneous mixture of the two acids from step A (400 mg, 2 mmol) at 0 ¡ãC in DCM (5 ml_) was added oxalyl chloride (0.244 ml_, 2.32 mmol) followed by DMF (0.05 ml_). Gas evolution commenced immediately and after 5 min the ice bath was removed. When gas evolution had ceased and the mixture was homogeneous an aliquot was removed and quenched with MeOH. Formation of the methyl ester was confirmed by HPLC and the mixture was concentrated in vacuo. The viscous liquid was dissolved in fresh DCM (5 ml_) and treated with solid N-hydroxyacetamidine (165 mg, 2.22 mmol) in several portions followed by TEA (0.351 ml_, 2.52 mmol). After stirring for 14 h at ambient temperature the mixture was concentrated in vacuo.Chromatography (Hex to 100percent EtOAc/Hex) afforded two products (477 mg, 94percent), (Z)-methyl 2-((((1 -aminoethylidene)amino)oxy)carbonyl)-3- fluorobenzoate and (Z)-methyl 2-((((1 -aminoethylidene)amino)oxy)carbonyl)-6- fluorobenzoate, which were taken on to the next step as a mixture. MS (ESI) mass calculated for Cn H FN2O4, 254.07; m/z found, 255.0.

As the paragraph descriping shows that 652-39-1 is playing an increasingly important role.

Reference£º
Patent; JANSSEN PHARMACEUTICA NV; BRANSTETTER, Bryan, James; LETAVIC, Michael, A.; LY, Kiev, S.; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; WO2011/50200; (2011); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem