Heterocyclic Building Block-benzofuran

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4265-16-1,Benzo[b]furan-2-carboxaldehyde,as a common compound, the synthetic route is as follows.

The 2-(thiophen-2-yl) acetonitrile (1 g, 8.118mmole), benzofuran-2-carbaldehyde (1.2 g, 8.118 mmol), and 2 g ofNaOH were dissolved in 45 ml of ethanol. Then, these reactionmixtures were stirred vigorously at normal room temperature for24 h. The improvement of the reactionwas monitored by TLC. Aftercompletion of the reaction, the mixtures were poured into ice coldwater. The solid product was filtered, washed with cold ethanol toremove excess benzofuran-2-carbaldehyde, and dried in a vacuumchamber to collect the green colouredcrude product. The precipitatewas allowed to purify by column chromatography techniqueusing the mixture of Hexane: Ethyl Acetate (2/8): eluent. Rectangularslabsof green colour crystals (yield was 88%) of the TACNBNFwas grown using slow evaporation method by DCM (2 ml) andmethanol (1 ml) mixture solvents.

4265-16-1, The synthetic route of 4265-16-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Ahamed, J. Irshad; Priya; Vinothkumar; Sathyamoorthy; MuraliManohar; Liu, Jinghe; Valan; Journal of Molecular Structure; vol. 1202; (2020);,
Benzofuran – Wikipedia
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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

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, As the paragraph descriping shows that 1914-60-9 is playing an increasingly important role.

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

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.

As the paragraph descriping shows that 54008-77-4 is playing an increasingly important role.

Reference£º
Article; Rao, Maddali L.N.; Awasthi, Dheeraj K.; Talode, Jalindar B.; Tetrahedron Letters; vol. 53; 21; (2012); p. 2662 – 2666;,
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496-16-2, 2,3-Dihydrobenzo[b]furan is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 44.4 g (0.37 moles) of 2,3-dihydrobenzofuran and 37.8 g (0.37 moles) of acetic anhydride were added with 5.0 g (37 mmoles) of anhydrous zinc chloride. The mixture was heated to 95-105 0C for 10 hrs; after cooling to room temperature the mixture is added with 50 ml of water and 50 ml of dichloromethane. The organic phase was separated and the aqueous phase was extracted twice with dichloromethane (2x 30 ml). The organic phases were collected together, and washed with 50 ml of a saturated aqueous solution of sodium carbonate. The organic phase was separated and evaporated u.v. (20 C/21 mbar). The residue was then distilled at 99-100 C/0.08 mbar obtaining 14.5 g (0.089 moles) of 5-acetyl-2,3- dihydrobenzofuran. 1H NMR (400 MHz; CDCI3): delta: 2.50 (s, 3H); 3.20 (t, 2H, J = 8.7 Hz); 4.64 (t, 2H, J = 8.7 Hz); 6.76 (d, 1 H, J = 8.4 Hz); 7.76 (m, 1 H); 7.81 (m, 1 H).13C-NMR (CDCI3, 100MHz): delta: 26.22; 28.79; 72.02; 108.72; 125.34; 127.50; 130.17; 130.48; 164.19; 196.41., 496-16-2

As the paragraph descriping shows that 496-16-2 is playing an increasingly important role.

Reference£º
Patent; ENDURA S.P.A.; ROTHAMSTED RESEARCH LTD.; BORZATTA, Valerio; CAPPARELLA, Elisa; MORONI, Leni; MOORES, Graham; PHILIPPOU, Despina; WO2011/20848; (2011); A1;,
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Benzofuran | C8H6O – PubChem

6940-49-4, 3-Bromophthalide is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

678.5 mg of material was dissolved in 8 ml of N,N-dimethylacetamide, then 0.172 g of potassium carbonate and 263 mg of 7-bromo-2-benzofuranone were added in turn. The mixture was reacted at 40-45 C. for 4 hours. At the end of the reaction, 30 ml of water was added. The resulting mixture was extracted twice with 25 ml of ethyl ether. The organic phase was dried and concentrated to give 606.4 mg of esterified intermediate with a yield of 75%. The intermediate was dissolved in 15 ml of dioxane and 4 ml of 4N HCl was added. The mixture was reacted at room temperature for 16 hours. The resulting solution was poured into water, extracted with ethyl acetate, dried, concentrated and flash chromatographed (eluent: ethyl acetate/petroleum ether=1/2) to give 284.7 mg of pure product (+/-)2-butyl-4-chloro-1-[2′-(1H-tetrazol-5-yl)1,1′-biphenyl-methyl]imidazole-5-carboxylic acid, 2[C]-benzofuranonyl ester with a yield of 67%.1H-NMR (DMSO-d6) delta H (ppm): 0.88 (t, 3H, J=21.6), 1.26 (m, 4H, J=29.6), 1.58 (m, 2H, J=30.5), 2.50 (t, 2H, J=15.5), 5.34 (s, 2H), 6.95-7.63 (12H), 8.06 (d, 2H, J=9.1)ESI (+) m/z: 569.5Mp: 120.6-124.6 C., 6940-49-4

6940-49-4 3-Bromophthalide 96218, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Patent; Guo, Jianhui; An, Dong; US2009/36505; (2009); A1;,
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7169-34-8, Benzofuran-3(2H)-one is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: To a solution of benzofuran-3(2H)-one (1.0 mmol) and benzaldehyde(1.0 mmol) in dichloromethane (6 mL) was added aluminum oxide (30.0 mmol) at room temperature. After stirring for 6 h, the reaction mixture was filtered off. The filtrate was concentrated under vacuum and the residue was purified by flash chromatography on silica gel to give the desired compound

7169-34-8, 7169-34-8 Benzofuran-3(2H)-one 23556, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Article; Wang, Sheng; Xu, Lei; Lu, Yu-Ting; Liu, Yu-Fei; Han, Bing; Liu, Ting; Tang, Jie; Li, Jia; Wu, Jiangping; Li, Jing-Ya; Yu, Li-Fang; Yang, Fan; European Journal of Medicinal Chemistry; vol. 130; (2017); p. 195 – 208;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.641-70-3,3-Nitrophthalic anhydride,as a common compound, the synthetic route is as follows.,641-70-3

To 580 ml of ammonia (cone, aqueous solution) 400 g (2.07 mol) of 2 were added. The temperature rose to 600C and the mixture was stirred for 1 h. After addition of 200 ml of ethanol the mixture was cooled to 5C. The resulting solid was isolated, washed with MTBE and dried in a vacuum oven at 400C. Yield: 81.6%.

The synthetic route of 641-70-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ABBOTT GMBH & CO. KG; WO2007/6566; (2007); 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.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

As the paragraph descriping shows that 1914-60-9 is playing an increasingly important role.

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

6296-53-3,6296-53-3, N-(1,3-Dioxo-1,3-dihydroisobenzofuran-4-yl)acetamide is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 1 Synthesis of 2-[1-(3-ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-acetylaminoisoindoline-1,3-dione A stirred solution of 1-(3-ethoxy-4-methoxyphenyl)-methylsulfonylethylamine (1.0 g, 3.7 mmol) and 3-acetamidophthalic anhydride (751 mg, 3.66 mmol) in acetic acid (20 mL) was heated at reflux for 15 h. The solvent was removed in vacuo to yield an oil. Chromatography of the resulting oil yielded the product as a yellow solid (1.0 g, 59% yield): mp, 144 C.; 1H NMR (CDCl3) delta1.47 (t, J=7.0 Hz, 3H, CH3), 2.26 (s, 3H, CH3), 2.88 (s, 3H, CH3), 3.75 (dd, J=4.4, 14.3 Hz, 1H, CHH), 3.85 (s, 3H, CH3), 4.11 (q, J=7 Hz, 2H, CH2), 5.87 (dd, J=4.3, 10.5 Hz, 11-1, NCH), 6.82-6.86 (m, 1H, Ar), 7.09-7.11 (m, 2H, Ar), 7.47 (d, J=7 Hz, 1H, Ar), 7.64 (t, J=8 Hz, 1H, Ar), 8.74 (d, J=8 Hz, 1H, Ar), 9.49 (br s, 1H, NH); 13C NMR (CDCl3) delta14.61, 24.85, 41.54, 48.44, 54.34, 55.85, 64.43, 111.37, 112.34, 115.04, 118.11, 120.21, 124.85, 129.17, 130.96, 136.01, 137.52, 148.54, 149.65, 167.38, 169.09, 169.40; Anal Calc’d. for C22H24NO7S: C, 57.38; H, 5.25; N, 6.08. Found: C, 57.31; H, 5.34; N, 5.83.

The synthetic route of 6296-53-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Celgene Corporation; Schafer, Peter H.; Gandhi, Anita; Capone, Lori; (50 pag.)US9272035; (2016); B2;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.115010-11-2,2,3-Dihydro-1-benzofuran-5-sulfonoylchloride,as a common compound, the synthetic route is as follows.

Part B Preparation of carbamic acid, 2R-hydroxy-3-[[(2,3-dihydrobenzofuran-5-yl)sulfonyl](2-methylpropyl)amino]-1S-(phenylmethyl)propyl-, phenylmethyl ester To a solution of 1.11 g (3.0 mmol) of N-[3S-benzyloxy carbonylamino-2R-hydroxy-4-phenyl]-N-isobutylamine in 20 ML of anhydrous methylene chloride, was added 1.3 ML (0.94 g, 9.3 mmol) of triethylamine.. The solution was cooled to 0 C. and 0.66 g of 5-(2,3-dihydrobenzofuranyl) sulfonyl chloride was added, stirred for 15 minutes at 0 C., then for 2 hour at room temperature.. ethyl acetate was added, washed with 5% citric acid, saturated sodium bicarbonate, brine, dried and concentrated to yield 1.62 g of crude material.. This was recrystallized from diethyl ether to afford 1.17 g of pure carbamic acid, [2R-hydroxy-3-[[(2,3-dihydrobenzofuran-5-yl)sulfonyl](2-methylpropyl)amino]-1S-(phenylmethyl)propyl-, phenylmethyl ester., 115010-11-2

115010-11-2 2,3-Dihydro-1-benzofuran-5-sulfonoylchloride 2776154, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Patent; G. D. Searle & Co.; US6388132; (2002); B1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem