Category: 17347-61-4

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17347-61-4,2,2-Dimethylsuccinicanhydride,as a common compound, the synthetic route is as follows.

General procedure: A mixture of the above intermediates (8, 9, 10 or 11), 2,2-dimethylsuccinic anhydride (10 equiv) and DMAP (1 equiv) in anhydrous pyridine (20 mL/mmol) was refluxed overnight. The mixture was then concentrated under vacuum and the residue was chromatographed on silica gel to yield the derivatives 12, 13, 14 and 15., 17347-61-4

As the paragraph descriping shows that 17347-61-4 is playing an increasingly important role.

Reference£º
Article; Coric, Pascale; Turcaud, Serge; Souquet, Florence; Briant, Laurence; Gay, Bernard; Royer, Jacques; Chazal, Nathalie; Bouaziz, Serge; European Journal of Medicinal Chemistry; vol. 62; (2013); p. 453 – 465;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17347-61-4,2,2-Dimethylsuccinicanhydride,as a common compound, the synthetic route is as follows.

To a stirred solution of ((1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9- hydroxy-5a,5b,8,8,11a-pentamethyl-1-(1-methylcyclopropyl)icosahydro-1H-cyclopenta[a]chrysen-3a-yl)(piperidin-1-yl)methanone (step 2, 0.16 g, 0.29 mmol, 1.0 eq) in ethyl acetate (2 ml) 2,2-dimethylsuccinicanhydride (0.114 g, 0.89 mmol, 3.0 eq) and DMAP (0.109 g, 0.89 mmol, 3.0 eq) were added sequentially then refluxed at about 100 ¡ãC for overnight. After completion of the reaction monitored by TLC, the reaction mixture was cooled to 0 ¡ãC, acidified with 1.0 N citric acid solution, organic layer was separated and extracted with ethyl acetate (2×30 ml). The combined organic layers were washed with water, brine solution, dried over Na2S04, filtered, evaporated and purified by silicagel column chromatography using 10percent EtOAc: hexane as eluent to afford the title compound (50 mg, 25percent yield) as an off-white solid. 1H NMR (300 MHz, DMSO-d6): delta 12.1 (s, 1H), 4.37 (dd, 1H, J= 10.8, 4.8 Hz), 3.52-3.37 (m, 4H), 2.82-2.72 (m, 1H), 2.45-2.39 (m, 2H), 2.12-2.04 (m, 1H), 1.98-1.85 (m, 2H), 1.70-1.50 (m, 8H), 1.48-1.28 (m, 12H), 1.28-1.22 (m, 5H), 1.18-1.15 (m, 6H), 1.12-1.07 (m, 1H), 0.95 (s, 3H), 0.90-0.73 (m, 16H), 0.37-0.27 (m, 2H), 0.23-0.13 (m, 2H); Mass: [M+H]+ 666.5 (70percent); HPLC: 98.6percent., 17347-61-4

The synthetic route of 17347-61-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; HETERO RESEARCH FOUNDATION; PANDURANGA ADULLA, Reddy; PARTHASARADHI REDDY, Bandi; MANOHAR SHARMA, Vedula; RATHNAKAR REDDY, Kura; PREM KUMAR, Mamnoor; BHASKAR REDDY, Kasireddy; NARSINGAM, Mogili; VENKATI, Mukkera; VL SUBRAHMANYAM, Lanka; MALLIKARJUN REDDY, Ravi; WO2013/160810; (2013); A2;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

17347-61-4, 2,2-Dimethylsuccinicanhydride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Compound 5 (16 mg, 0.032 mmol), 2,2-dimethyl succinic anhydride(41 mg, 0.32 mmol), DMAP (8 mg, 0.064 mmol), and pyridine (1.5 mL)were placed in a 10 mL glass tube and sealed. The mixture was stirred at120 C for about 12 h. The reaction mixture was then transferred into a50 mL flask. Pyridine was removed under reduced pressure. HCl (3 N,10 mL) was added, the mixture was extracted three times with EtOAc,and the organic layer washed with 3 N HCl for a second time. Then theorganic layer was washed with brine, dried over anhydrous Na2SO4,and concentrated in vacuo. The residue was purified by silica gelcolumn chromatography (hexane/EtOAc as eluent) to provide targetproduct 7 (11 mg). White solid, yield: 54%.

17347-61-4, The synthetic route of 17347-61-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Li, Jizhen; Chang, Ling-Chu; Hsieh, Kan-Yen; Hsu, Pei-Ling; Capuzzi, Stephen J.; Zhang, Ying-Chao; Li, Kang-Po; Morris-Natschke, Susan L.; Goto, Masuo; Lee, Kuo-Hsiung; Bioorganic and Medicinal Chemistry; vol. 27; 13; (2019); p. 2871 – 2882;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

17347-61-4, 2,2-Dimethylsuccinicanhydride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1: 1-(5-Iodo-pyridin-2-yl)-3,3-dimethyl-pyrrolidine-2,5-dione 5-iodopyridin-2-amine (1 g, 4.55 mmol) was dissolved in DMF (5 ml) and 3,3-dimethyldihydrofuran-2,5-dione (1.28 g, 10.0 mmol, 2.2 equiv.) was added at room temperature. The mixture was stirred for 3 hr at 150¡ã C. The reaction mixture was evaporated to dryness and loaded directly to a silica gel column. The crude material was purified by flash chromatography on silica gel (20 gr, ethyl acetate/heptane gradient, 0:100 to 100:0). The desired 1-(5-iodopyridin-2-yl)-3,3-dimethylpyrrolidine-2,5-dione (1.3 g, 3.94 mmol, 86.6percent yield) was obtained as a yellow solid, MS: m/e=331.0 (M+H+)., 17347-61-4

The synthetic route of 17347-61-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Green, Luke; Guba, Wolfgang; Jaeschke, Georg; Jolidon, Synese; Lindemann, Lothar; Ricci, Antonio; Rueher, Daniel; Stadler, Heinz; Vieira, Eric; US2011/251169; (2011); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17347-61-4,2,2-Dimethylsuccinicanhydride,as a common compound, the synthetic route is as follows.

Step F: Compound 19-1 To a solution of the intermediate 18-1 (70 mg, 0.13 mmol) in pyridine (3 mL) were added 3,3-dimethyldihydro-2, 5-furandione (159 mg, 1.302 mmol) and DMAP (334 mg, 2.6 mmol). After it was heated at 90 ¡ãC overnight, the reaction mixture was extracted with DCM. The organic phase was washed with HC1 (2 N, 25 mL), water (50 mL x 2), dried over sodium sulfate, and evaporated under reduced pressure to give a residue, which was purified by column chromatography on silica gel (PE:EtOAc = 3: 1 to 2: 1) to give the compound 19-1 (30 mg, 34.6 percent) as a white solid product. 1H NMR (400 MHz, CDC13) delta ppm 4.54-4.42 (2H, m), 4.28-4.35 (1H, m), 4.05-4.15 (2H, m), 3.17-3.25 (1H, m), 2.75- 2.62 (4H, m), 2.60-2.52 (2H, m), 2.35(1H, quint, J= 8.0 Hz), 2.17 (1H, d, J= 19.2 Hz), 2.10-2.00 (1H, m), 1.96-1.82 (1H, m), 1.78-0.78 (42H, m). LC/MS: m/z calculated 665.9, found 664.4 (M – 1)-., 17347-61-4

The synthetic route of 17347-61-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; GLAXOSMITHKLINE LLC; GAO, Daxin; HAN, Nianhe; JIN, Zhimin; NING, Fangxian; TANG, Jun; WU, Yongyong; YANG, Heping; WO2011/100308; (2011); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

17347-61-4, 2,2-Dimethylsuccinicanhydride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

a) 2,2-Dimethyl-4-oxo-4-piperidin-l-yl-butyric acid; To solution of 2,2-dimethylsuccinic anhydride (1.0 g, 7.8 mmol) and triethylamine (0.79 g, 078 mmol) in CH2Cl2 (40 mL) was slowly added a solution of piperidine (0.66 g, 7.8 mmol) in CH2Cl2 (10 mL) at RT. The mixture was stirred for 4 hrs. NaOH 1.0M solution was added and the aqueous layer collected and subsequently acidified to pH 4 using HCl 2.0 M solution. Extraction with CHCI3 and evaporation of the solvent gave a crude product clean enough to be used without further purification.1.63 g; 98percentC11H19NO3 calculated 213; found M+ 214/M- 212Lc Rt (5 min)= 1.56 NMR (400 MHz, dmso-d6): 1.10 (6H, s); 1.32-1.37 (2H, m); 1.40- 1.44(2H, m); 1.50- 1.55 (2H, m); 2.50 (2H, s); 3.31-3.35 (4H, m); 11.7 (IH, br s)., 17347-61-4

The synthetic route of 17347-61-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SIENA BIOTECH S.P.A.; WYETH PHARMACEUTICALS; WO2007/98826; (2007); A2;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

17347-61-4, 2,2-Dimethylsuccinicanhydride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

4-(4-Bromophenyl)-2, 2-dimethyl-4-oxo-butyric acid 67. To a stirred suspension of 2,2-dimethylsuccinic anhydride (0.641 g, 5.0 mmol) in bromobenzene (3.3 mL), cooled to -10¡ã C (ice/acetone bath) was added aluminium trichloride (1.34 g, 10 mmol) and the reaction was allowed to warm slowly to rt with stirring overnight. The resulting brown solution was poured into cooled (ice bath) aqueous HCl (10 mL, 18percent) and stirred for a further 30 min while the solution was allowed to warm to r.t. No precipitate formed therefore DCM (10 mL) was added and the organic layer was separated and concentrated under reduced pressure to give a solution of the product in PhBr. To this was added hexane followed by a small amount of DCM and the resulting white needles were collected by filtration. Yield 51percent: 1H NMR delta (270 MHz, DMSO-d6) 1.24 (6H, s), 3.29 (2H, s), 7.69 (2H5 d, J= 8.7 Hz), 7.88 (2H, d, J= 8.7 Hz), 7.96 (IH5 s); HPLC > 93percent (R1 2.87, 70percent MeCN in H2O); APCI (M-H)” 283.15, 285.10 m/z.

17347-61-4, As the paragraph descriping shows that 17347-61-4 is playing an increasingly important role.

Reference£º
Patent; STERIX LIMITED; WO2007/96647; (2007); A2;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

17347-61-4, 2,2-Dimethylsuccinicanhydride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The compound 6 (349 mg, 0.5 mmol) is dissolved in anhydrous pyridine (8 ml) in, adding 2, 2 – dimethyl succinic anhydride (320 mg, 2.5 mmol), DMAP (61 mg, 0.5 mmol), after dissolving completely, microwave reactor is heated to 160 ¡ãC, reaction 3 h. The end of the reaction, by adding ethyl acetate (50 ml), for 10percent HCl to adjust the pH 4 – 5; organic layer is saturated salt water washing (25 ml ¡Á 3), dried with anhydrous sodium sulfate, filtered, concentrated under reduced pressure to remove the solvent, silica gel column chromatography (hexane: ethyl acetate=1:1), to obtain white solid 302 g, is compound 9, yield 73percent.

17347-61-4, As the paragraph descriping shows that 17347-61-4 is playing an increasingly important role.

Reference£º
Patent; Chen Zhong; Duan Huaqing; Yang Shilin; Li Guoxiong; (26 pag.)CN109485688; (2019); A;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17347-61-4,2,2-Dimethylsuccinicanhydride,as a common compound, the synthetic route is as follows.

Step E: Intermediate 26-2 To a solution of the intermediate 25-2 in pyridine (1 mL) were added DMAP (150 mg, 1.171 mmol) and 3, 3-dimethyldihydro-2,5-furandione (480 mg, 3.93 mmol). The reaction mixture was stirred at 80 ¡ãC for 1.5 h. After cooling down to room temperature, the reaction mixture was extracted with DCM (50 mL x 3). The organic phase was separated, washed with water, brine, and dried with Na2S04. Removal of the solvent provided a crude product, which was purified by column chromatography on silica gel (PE: EtOAc = 3:1 ) to afford the intermediate 26-2 (240 mg, 0.337 mmol, 70.3 percent yield) as a white solid.

17347-61-4, 17347-61-4 2,2-Dimethylsuccinicanhydride 87067, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; GLAXOSMITHKLINE LLC; GAO, Daxin; HAN, Nianhe; JOHNS, Brian; JIN, Zhimin; NING, Fangxian; TANG, Jun; WU, Yongyong; YANG, Heping; WO2013/20245; (2013); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

17347-61-4, 2,2-Dimethylsuccinicanhydride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A stirring solution of compound 17-1 (112 mg, 0.232 mmol), DMAP (28 mg, 0.232 mmol) and 2,2-dimethylsuccinic anhydride (89 mg, 0.695 mmol) in dry pyridine (4 mL) is heated for 4 hours at 120¡ãC. Another 90 mg (0.7 mmol) of anhydride is added and heating is continued overnight. The mixture is concentrated to dryness and the residue is diluted in ethyl acetate, washed twice with HCl 1 N, water and brine, dried over sodium sulfate and concentrated to dryness. The residue is purified by flash chromatography on silica gel (ethyl acetate/hexanes 10percent to 30percent) to yield the title compound 14-1 as a white solid (87 mg, 61percent).1H NMR (400 MHz, DMSOd6): delta [ppm] 12.16 (s, 1 H), 6.33 (s, 1 H), 4.64 (d, 1 H), 4.54 (s, 1 H), 4.35 (d x d, 1 H), 3.47 (s, 3H), 2.73 (m, 1 H), 2.53 (d, 1 H), 2.45 (d, 1 H), 2.42 (m, 1 H), 2.15 (m, 1 H), 1.92 (m, 1 H), 1.75 (m, 1 H), 1.70-0.90 (m, 20H), 1.62 (s, 3H), 1.15 (s, 3H), 1.14 (s, 3H), 0.95 (s, 3H), 0.91 (s, 3H), 0.89 (s, 3H), 0.84 (s, 3H), 0.80 (s, 3H). LC/MS: m/z = 614.72 (M+H+). HPLC (Method A): tR = 31.62 min., 17347-61-4

The synthetic route of 17347-61-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; VIROCHEM PHARMA INC.; WO2009/100532; (2009); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem