Category: 115761-79-0

115761-79-0, 1-(2,4-Difluorophenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A suitable commercial phenylpiperazine (2.00-5.10 mmol), K2CO3 (0.9-2.00 g) and acetone (7-16 mL) were stirred and refluxed for 30 min. Then, correspondingly substituted bromopentyl 3-benzyl-5,5-hydantoin derivatives 37-39 (2.20-5.70 mmol) in acetone (9-20 mL) were added and the mixture was refluxed for 6 h, left at room temperature overnight and separated from the inorganic precipitate by filtration. The solvent was evaporated from the filtrate. The pure product (14a-24a) was obtained from the residue using method C or D.

115761-79-0, 115761-79-0 1-(2,4-Difluorophenyl)piperazine 2734637, apiperazines compound, is more and more widely used in various fields.

Reference£º
Article; Handzlik, Jadwiga; Bojarski, Andrzej J.; Sata?a, Grzegorz; Kubacka, Monika; Sadek, Bassem; Ashoor, Abrar; Siwek, Agata; Wi?cek, Ma?gorzata; Kucwaj, Katarzyna; Filipek, Barbara; Kie?-Kononowicz, Katarzyna; European Journal of Medicinal Chemistry; vol. 78; (2014); p. 324 – 339;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.115761-79-0,1-(2,4-Difluorophenyl)piperazine,as a common compound, the synthetic route is as follows.

A mixture of the 2- (5-amino-2- (furan-2-yl) -8H-pyrazolo [4, 3-e] [1, 2, 4] triazolo [1, 5-c] pyrimidin-8-yl) -4-methylpentanoic acid (35.5 mg, 0.1 mmol) , 1- (2, 4-difluorophenyl) piperazine (19.8 mg, 0.1 mmol) , HATU (46 mg, 0.12 mmol) and DIPEA (25.8 mg, 0.2 mmol) in DMF (3 mL) was stirred overnight. The reaction mixture was poured into H2O (15 mL) and extracted with EtOAc (20 mL x 3) . The combined organic layers were washed with brine, dried over Na2SO4, concentrated and purified by column chromatography (petroleum ether/EtOAc = 10: 1 3: 1) to give the target compound (20 mg, 37.3%) .1H NMR (400 MHz, DMSO-d6) delta 8.78 (s, 1H) , 7.94 (s, 1H) , 7.65 (s, 2H) , 7.25 -7.17 (m, 2H) , 7.03 (m, 2H) , 6.74 (dd, J = 3.2, 1.6 Hz, 1H) , 5.69 (m, 1H) , 3.76 (s, 2H) , 3.64 (m, 2H) , 3.05-2.93 (m, 2H) , 2.91 -2.79 (m, 2H) , 2.28 -2.17 (m, 1H) , 1.89 -1.78 (m, 1H) , 1.35 (m, 1H) , 0.97 (d, J = 6.4 Hz, 3H) , 0.88 (d, J = 6.4 Hz, 3H) ppm. MS: M/e 536 (M+1)+., 115761-79-0

The synthetic route of 115761-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BEIGENE, LTD.; ZHANG, Guoliang; SUN, Hanzi; ZHOU, Changyou; (253 pag.)WO2020/20097; (2020); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.115761-79-0,1-(2,4-Difluorophenyl)piperazine,as a common compound, the synthetic route is as follows.

The dimethyl acetal intermediate (40 mg, 0.13 mmol) from subpart (a) above was suspended in 2 mL of CH2Cl2 and 0.2 mL of 2: 1 solution of TFA/H2O was added. The resulting reaction mixture was stirred at room temperature for 4 hours. It was then neutralized with 0.25 mL of triethylamine. 1-(2,4-Difluoro-phenyl)-piperazine (40 mg, 1.5 eq. , prepared by reacting piperazine with 1-bromo-2,4-difluorobenzene according to the procedure described in WO 01/92264 A1), was added, followed by 140 mg of Na(OAc)3BH. The resulting reaction mixture was stirred at room temperature for 2 hours. It was then concentrated and then purified by preparative HPLC to afford N5-{2-[4-(2,4-difluoro-phenyl)-piperazin-1-yl]-ethyl}-2-furan-2-yl-[1,2,4]triazolo[1,5-a][1,3,5]triazine-5,7-diamine. 1H NMR (DMSO-d6) delta 7.90 (br s, 2 H), 7.80 (d, J = 1.0 Hz, 1 H), 7.05 (d, J = 3.6 Hz, 1 H), 7.10-7.50 (m, 3 H), 6.68 (dd, J = 3.6 Hz, 1.0 Hz, 1 H) 3.20-2.75 (m, 12 H) ppm. MS: m/z: 442 [M + H] +., 115761-79-0

115761-79-0 1-(2,4-Difluorophenyl)piperazine 2734637, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; BIOGEN IDEC MA INC.; WO2004/92170; (2004); A2;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.115761-79-0,1-(2,4-Difluorophenyl)piperazine,as a common compound, the synthetic route is as follows.

5-(4-Fluorophenyl)-5-methyl-3-(oxiran-2-ylmethyl)imidazolidine-2,4-dione 17 (3.5 mmol, 1.2 eq) with appropriate piperazine derivative (3.0 mmol, 1.0 eq) in 50 mL flat-bottom flask were irradiated in household microwave: 300 MW (1 min), 450 MW (1 min), 300 MW (2 min). Progress of reaction was controlled by TLC (DCM/MeOH 95:5). Pure products were obtained from crude glue-reactants after microwave reaction by: crystallization from methanol (Method A), column chromatography with DCM/MeOH (98:2) as eluent (Method B) and/or dissolving in ethanol and saturating with gaseous HCl to provide product in form of hydrochloride (Method C)., 115761-79-0

As the paragraph descriping shows that 115761-79-0 is playing an increasingly important role.

Reference£º
Article; Kucwaj-Brysz, Katarzyna; Warszycki, Dawid; Podlewska, Sabina; Witek, Jagna; Witek, Karolina; Izquierdo, Andrea Gonzalez; Sata?a, Grzegorz; Loza, Maria I.; Lubelska, Annamaria; Latacz, Gniewomir; Bojarski, Andrzej J.; Castro, Marian; Kie?-Kononowicz, Katarzyna; Handzlik, Jadwiga; European Journal of Medicinal Chemistry; vol. 112; (2016); p. 258 – 269;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.115761-79-0,1-(2,4-Difluorophenyl)piperazine,as a common compound, the synthetic route is as follows.,115761-79-0

Take 50mL single-mouthed flask, was successively added 2-(1-(hydroxymethyl)cyclopropyl)methoxy-5-(methylsulfonyl)benzoic acid (150mg, 0.50mmol), 1-(2,4-difluorophenyl)piperazine (120mg, 0.60mmol), HATU (285mg, 0.75mmol), TEA (0.25mL, 1.5mmol), DMF (10mL), the reaction at room temperature overnight, saturated sodium chloride (20 mL), and extracted with ethyl acetate (20mL * 3). The organic phase was dried over anhydrous sodium sulfate and concentrated to dryness to give crude, the crude product was purified by preparative plate 130mg, yield: 55%.

The synthetic route of 115761-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Shanghai Hansoh BioMedical Co., Ltd.; Jiangsu Stockhausen Pharmaceutical Group Co., Ltd.; Liao, Jianchun; Yu, Hongping; Xu, Yaochang; Chen, Jianghua; Zhang, Shaobao; Xiu, Wenhua; Liu, Zhaomin; (48 pag.)CN105712952; (2016); A;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

115761-79-0, 1-(2,4-Difluorophenyl)piperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A reaction mixture of 8 (0.235 g, 1.0 mmol), l-(2,4-difluorophenyl)piperazine (0.208 g, 1.1 mmol), Pd(OAc)2 (28.8 mg, 0.13 mmol), BINAP (0.135 g, 0.22 mmol), and CS2CO3 (0.427 g, 1.3 mol) in dry toluene (5 mL) was stirred at 50 C for 48 h. After cooling, the palladium catalyst was removed by filtration through Celite pad. The product mixture was diluted with ethyl acetate (50 mL) and washed with aqueous NaHCCte (10 mL x 2) and brine (10 mL x 2). The organic layer was dried over magnesium sulfate, filtered, and concentrated in vacuo. The resulting product was purified by flash chromatography to yield 9 as a white solid (0.252 g, 0.72 mmol, 72%); Rf = 0.36 (20% ethyl acetate in hexane). NMR (400 MHz, CDCb) delta 7.83 (t, J = 8.8 Hz, 1H), 6.95 – 6.87 (m, 1H), 6.86 – 6.76 (m, 2H), 6.65 (dd, J = 9.0, 2.5 Hz, 1H), 6.54 (dd, J = 14.6, 2.5 Hz, 1H), 3.86 (s, 3H), 3.49 – 3.41 (m, 4H), 3.13 (dd, J = 6.2, 4.0 Hz, 4H). 13C NMR (101 MHz, CDCb) delta 165.09, 164.93, 164.89, 162.53, 159.53, 159.42, 157.1 1, 157.06, 157.00, 156.95, 155.53, 155.42, 154.59, 154.47, 136.30, 136.26, 136.21, 136.17, 133.44, 133.41, 119.80, 1 19.76, 1 19.71, 119.67, 1 1 1.02, 1 10.99, 1 10.81, 1 10.78, 109.50, 109.48, 107.70, 107.60, 105.16, 104.92, 104.90, 104.66, 101.75, 101.48, 77.16, 51.84, 50.60, 50.57, 47.43. MS (ESI) m/z 351 [M+H]+., 115761-79-0

The synthetic route of 115761-79-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; THE SCRIPPS RESEARCH INSTITUTE; THE REGENTS OF THE UNIVERSITY OF CALIFORNIA; ROUSH, William R.; CHOI, Jun Yong; PODUST, Larissa; WO2015/48306; (2015); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics