Category: 32703-79-0

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.32703-79-0,5-(tert-Butyl)isobenzofuran-1,3-dione,as a common compound, the synthetic route is as follows.

EXAMPLE I Preparation of dimethyl 4-amino-5-t-butylphthalate A mixture of 70 g. of 4-t-butylphthalic anhydride and 65 ml. of concentrated sulfuric acid was stirred at room temperature while adding 60 ml. of 90% nitric acid. The rate of addition was slow and controlled such that the temperture of the mixture did not go above 60 C, although the nitration reaction can be carried out at any temperature within the range of -20 to 120 C. After the addition was complete (2 hours) an additional 50 ml. of concentrated nitric acid was added over a 20 minute period. The reaction mixture was allowed to cool and was then stirred for 4 days. The mixture was then poured onto 800 g. of ice and the layers allowed to separate. The upper layer (water and acid) was decanted off and the residue dissolved in 500 ml. of ether. The ether solution was washed five times with 100 ml. of water, dried with MgSO4, filtered, and the ether removed under reduced pressure. The residual oil was esterified with 150 ml. of trimethyl orthoacetate by mixing the two and distilling off methanol, methyl acetate, and the excess reagent. The crude product was mixed with 400 ml. of methanol and cooled to 10 C. for 20 hours. Filtering and drying gave 33.2 g. of crystalline material. Recrystallization from methanol (125 ml.) gave 30.1 g. of pure dimethyl 4-nitro-5-t-butylphthalate, m.p. 80 -81 C.

32703-79-0, The synthetic route of 32703-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Standard Oil Company; US4078142; (1978); A;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

32703-79-0, 5-(tert-Butyl)isobenzofuran-1,3-dione is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of 4-tert-butylphthalic anhydride (4.39 g, 21.5 mmol) in acetic acid (40 mL), 3-bromo-2-methylaniline(2.65 mL, 21.5 mmol) was added and stirred at 100 C for 1 h. The reaction mixture was concentrated under reducedpressure, and diluted with ethyl acetate (300 mL), washed with water (100 mL), saturated sodium hydrogen carbonatesolution (100 mL) and brine (100 mL), dried over sodium sulfate, filtered and concentrated. The crude material was suspended in hexane, then the precipitate was collected by filtration, washed with hexane then dried to afford 2-(3-bromo-2-methylphenyl)-5-(tert-butyl)isoindoline-1,3-di one (7.0 g). 1H NMR (400 MHz, CDCl3) delta 8.00 (dd, J = 1.7, 0.7 Hz, 1H), 7.93 – 7.77 (m, 2H), 7.67 (dd, J = 7.6, 1.8 Hz, 1H),7.24 – 7.12 (m, 2H), 2.27 (s, 3H), 1.42 (s, 9H)., 32703-79-0

As the paragraph descriping shows that 32703-79-0 is playing an increasingly important role.

Reference£º
Patent; Carna Biosciences, Inc.; KAWAHATA, Wataru; ASAMI, Tokiko; SAWA, Masaaki; ASAMITSU, Yuko; IRIE, Takayuki; MIYAKE, Takahiro; KIYOI, Takao; EP2824099; (2015); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

32703-79-0, 5-(tert-Butyl)isobenzofuran-1,3-dione is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Zinc phthalocyanine (6) (40 mg, 0.05 mmol) and pyridine.HCl (1 g, 8.7 mmol) were dissolved in 5 mL of pyridine and the mixture was refluxed under N2 for 16 h. After the reaction mixture was cooled to room temperature, 10 mL of water was added and the product was precipitated. The precipitate was washed first with water and then with methanol. After drying in vacuo the product was puried by column chromatography on silica gel by using ethyl acetate/hexane (1/3) eluent. The product was obtained as a dark blue solid. Yield 74%, FTIR ( , cm1) : 3283, 3071, 2956, 2907, 2866, 1617, 1485, 1258, 1089, 1000, 827, 741.1H NMR (500 MHz, CDCl3) : , ppm 9.14{8.62 (8H, m, Pc-H), 8.17{8.04 (4H, m, Pc-H), 1.94{1.89 (36H, m,C-(CH3)3) , {2.67{ {3.46 (2H, m, N-H), MS: m/z 747.079 [M+H]+., 32703-79-0

32703-79-0 5-(tert-Butyl)isobenzofuran-1,3-dione 122930, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Article; Atsay, Arma?an; Guel, Ahmet; Burkut Kocak, Makbule; Turkish Journal of Chemistry; vol. 40; 1; (2016); p. 163 – 173;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

32703-79-0, 5-(tert-Butyl)isobenzofuran-1,3-dione is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

4-Isobutylphthalic anhydride (500 mg, 2.45 mmol) and 4-aminobutyric acid (260 mg, 2.5 mmol) were added to glacial acetic acid (10 mL), and the mixture was heated to 100 C for 3 h. The reaction was quenched with water (10 mL) and the NaOH solution (0.1 mol/L) was adjusted to pH 6-8. Dichloromethane extraction (10mL ¡Á 3), washed with saturated NaHCO3 solution, washed with water, combined with organic phase, dried over anhydrous sodium sulfateDry and dry, 640mg of yellow solid,LC-MS and 1 H-NMR confirmed the expected intermediate compound, yield 87.5%.

32703-79-0, As the paragraph descriping shows that 32703-79-0 is playing an increasingly important role.

Reference£º
Patent; Chinese Academy Of Medical Sciences Pharmaceutical Institute; Chinese Academy Of Sciences Animal Institute; Wu Song; Zhou Qi; Zhang Wenxuan; Wu Jun; Wu Hongna; Hao Jie; Wang Liu; (88 pag.)CN109867661; (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.32703-79-0,5-(tert-Butyl)isobenzofuran-1,3-dione,as a common compound, the synthetic route is as follows.

A solution of amine salt 1-127 (36 mg, 0.117 mmol), 5-(/er/-butyl)isobenzofuran- l,3-dione (29 mg, 1.2 equiv.) and potassium acetate (11 mg, 1.0 equiv.) in AcOH was heated to 100 C for 18 hours. The reaction mixture was then cooled to ambient temperature and concentrated in vacuo. The residue was dissolved in EtOAc and the solution was washed with 1 M HC1 then brine, and the combined aqueous washes were back-extracted with EtOAc. The combined organic extracts were dried over sodium sulfate and concentrated in vacuo. The resulting residue was purified by flash chromatography using 15% MeOH in DCM with 1% AcOH to afford 49 mg of intermediate acid 1-138 containing dicarboxylic acid impurities. This material was dissolved in DCM along with pentafluorophenol (18.4 mg, 0.100 mmol) and EDC (19 mg, 0.100 mmol). The resulting reaction mixture was stirred for 2 hours, concentrated in vacuo , and the residue was re- dissolved in EtOAc. The resulting solution was washed with 1 M HC1 and brine, dried over sodium sulfate, and concentrated in vacuo. Purification of the residue by flash chromatography using EtOAc in hexanes afforded 22 mg of 1-139 (37% yield over two steps).

32703-79-0, The synthetic route of 32703-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CARMOT THERAPEUTICS, INC.; ENQUIST, Johan; KRISHNAN, Shyam; ATWAL, Suman; ERLANSON, Daniel; FUCINI, Raymond V.; HANSEN, Stig; SAWAYAMA, Andrew; SETHOFER, Steven; (719 pag.)WO2019/183577; (2019); 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.32703-79-0,5-(tert-Butyl)isobenzofuran-1,3-dione,as a common compound, the synthetic route is as follows.

4.1.38 2-(3-Bromo-2-methylphenyl)-5-(tert-butyl)isoindoline-1,3-dione (7l) A mixture of 5-(tert-butyl)isobenzofuran-1,3-dione (93 mg, 0.5 mmol), 3-bromo-2-methylaniline (100 mg, 0.5 mmol) in AcOH (2 mL) was stirred at 100 C for 2 h. The reaction mixture was cooled down to room temperature and diluted with water (10 mL), and then the NaHCO3 solution was added. The product was extracted three times with EtOAc (30 mL) and the combined organic layer was dried over Na2SO4. The solvent was removed in vacuo and the residue product was purified on a silica gel column using petroleum ether/EtOAc (4:1, v/v) as eluent to afford 7l (83 mg, 45.2%) as a gray solid. MS (ESI) m/z 372.1 [M+H]+; 1H NMR (400 MHz, DMSO-d6): delta 7.97-7.95 (m, 1H), 8.42 (s, 1H), 7.93-7.91 (d, J = 8.60 Hz, 1H), 7.77-7.75 (d, J = 8.00 Hz, 1H), 7.44-7.43 (d, J = 7.72 Hz, 1H), 7.33-7.29 (t, J = 15.90 Hz, 1H), 2.17 (s, 3H), 1.38 (s, 9H)., 32703-79-0

32703-79-0 5-(tert-Butyl)isobenzofuran-1,3-dione 122930, abenzofuran compound, is more and more widely used in various fields.

Reference£º
Article; Zhao, Xinge; Xin, Minhang; Huang, Wei; Ren, Yanliang; Jin, Qiu; Tang, Feng; Jiang, Hailong; Wang, Yazhou; Yang, Jie; Mo, Shifu; Xiang, Hua; Bioorganic and Medicinal Chemistry; vol. 23; 2; (2015); p. 348 – 364;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.32703-79-0,5-(tert-Butyl)isobenzofuran-1,3-dione,as a common compound, the synthetic route is as follows.

General procedure: A reaction vessel was charged with phthalic anhydride (1.0 mmol), alkyl acrylate (2.0 mmol), ruthenium catalyst (0.015 mmol, 9mg), Cu(OAc)2*H2O (400 mg, 2.0 mmol), and NMP (3ml) in air. The reaction vessel was then sealed and stirred at 120 C for 20 h. Then, the mixture was cooled to room temperature and diluted with ethyl acetate and washed with brine. The organic layer was dried over anhydrous MgSO4, filtered and concentrated in vacuo. The resulting residue that was purified by column chromatography using ethyl acetate-hexane (15:85) as the solvent, and then recrystallized in ethyl acetate-hexane (15:85).

32703-79-0, As the paragraph descriping shows that 32703-79-0 is playing an increasingly important role.

Reference£º
Article; Kianmehr, Ebrahim; Fardpour, Maryam; Darvish, Ali; Kharat, Ali Nemati; Weng Ng, Seik; Tetrahedron Letters; vol. 60; 10; (2019); p. 699 – 702;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.32703-79-0,5-(tert-Butyl)isobenzofuran-1,3-dione,as a common compound, the synthetic route is as follows.

Into a 500 ml three-necked flask, 36 g (176 mmole) of 4-t-butylphthalic anhydride, 27 g (200 mmole) of t-butylbenzene and 100 ml of dichloroethane were placed under a stream of argon and cooled to 0C. To the obtained mixture, 56 g (420 mmole) of aluminum chloride was slowly added. After the addition was completed, the resultant mixture was stirred at the room temperature for one night. After the reaction was completed, ice was added slowly, and then concentrated hydrochloric acid was added. The formed precipitates were separated by filtration and washed well with water, and 32 g of the benzoic acid compound of the object compound was obtained (the yield: 54%; a white powder)., 32703-79-0

The synthetic route of 32703-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; IDEMITSU KOSAN CO., LTD.; EP1440959; (2004); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem