Tag: M.W:200-300

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.30459-17-7,1-(4-Trifluoromethylphenyl)piperazine,as a common compound, the synthetic route is as follows.

General procedure: Compound 6 (1mmol) was dissolved in freshly distilled dichloromethane (5mL) under nitrogen atmosphere. Then HOBt (1.1mmol), EDC,HCl (1.1mmol) were added to it. The reaction mixture was stirred for 5min, secondary amine 7a-l (1.2mmol) was added in a slow stream and followed by the addition of triethylamine (2mmol) and the reaction mixture was stirred for 24hat room temperature. The progress of the reaction was monitored by TLC. After completion of the reaction, water (10mL) was added to the reaction mixture and extracted with dichloromethane. Organic layer was collected and dried over anhydrous Na2SO4. After filtration, the solvent was removed under reduced pressure and the crude product was purified by silica gel chromatography using an eluent of 50% ethyl acetate in hexane., 30459-17-7

The synthetic route of 30459-17-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Banu, Saleha; Bollu, Rajitha; Bantu, Rajashaker; Nagarapu, Lingaiah; Polepalli, Sowjanya; Jain, Nishant; Vangala, Radhika; Manga, Vijjulatha; European Journal of Medicinal Chemistry; vol. 125; (2017); p. 400 – 410;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

129799-08-2, 1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The compound (S) -5- (1 – ((tert-butoxycarbonyl) amino) ethyl) -2- (3- (cyclopropylmethoxy) -4-(difluoromethoxy) phenyl ) -oxazole-4-carboxylic Acid (0.6g, 1.28mmol), 1-Boc-3- methyl piperazine (376mg,1.54mmol), 1- ethyl-3- (3-dimethylaminopropyl) carbodiimide salts Salt (368mg, 1.92mmol) and N- hydroxy-7-aza-benzotriazole (435mg, 3.20mmol) was dissolved in dichloromethane (20mL) The conditions at 0 C tothis solution was added dropwise N, N- diisopropylethylamine (0.89mL, 5.12mmol), stirred at rt for 6h,Saturated chlorinated Sodium solution (15mL ¡Á 3) washing the organic phase dried over Na 2 SO 4 anhydrous,solvent was removed concentrate was subjected to column chromatography (eluent: Petroleumether / EtOAc (v/ v) = 4/1), to give 714mg white solid, yield: 80%.

129799-08-2, 129799-08-2 1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate 2756819, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Guangdong East Sunshine Pharmaceutical Co., Ltd; Zhang, Ying jun; Liu, Bing; Yu, Tian Zhu; Zhang, Xiang Yu; (348 pag.)CN105399698; (2016); A;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

84477-85-0, Benzyl 3-methylpiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 49 4-Benzyloxycarbonyl-1-(4-methyl-5-isoquinolinesulfonyl)-2-methylpiperazine To a solution of 1-benzyloxycarbonyl-3-methylpiperazine (5.09 g) in chloroform (150 ml), a solution of triethylamine (3.0 ml) and 4-methyl-5-isoquinolinesulfonyl chloride (6.05 g) in chloroform (50 ml) was gradually added dropwise. After completion of the dropwise addition, the resultant mixture was continuously stirred at 60C for 20 hours.The reaction mixture was washed first with water (100 ml x 2) and then with a saturate aqueous solution of sodium chloride (100 ml), and was then dried over anhydrous magnesium sulfate. The solvent was then distilled off under reduced pressure. The resulting residue was purified by chromatography on a silica gel column (chloroform), whereby 3.95 g of the target compound were obtained. 1H-NMR (270 MHz, CDCl3) delta: 9.15(1H,s), 8.54(1H,s), 8.37(1H,dd,J=7.92,1.32Hz), 8.17(1H,dd,J=7.92,1.32Hz), 7.61(1H,t,J=7.59Hz), 7.36(5H,m), 5.17(2H,dd,J=14.85,12.21Hz), 4.05-4.18(3H,m), 3.33-3.55(3H,m), 3.04(3H,s), 1.34(3H,d,J=6.60Hz)., 84477-85-0

As the paragraph descriping shows that 84477-85-0 is playing an increasingly important role.

Reference£º
Patent; Hidaka, Hiroyoshi; EP1074545; (2001); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

112257-24-6, 1-Boc-3-Carbamoylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

tert-Butyl 4-acryloyl-3-carbamoylpiperazine-1-carboxylate To a solution of tert-butyl 3-carbamoylpiperazine-1-carboxylate (300 mg, 1.31 mmol) and Et3N (396 mg, 3.93 mmol) in DCM (5 mL) at 0 C., acryloyl chloride (130 mg, 1.44 mmol) in DCM (1 mL) was added and the resulting mixture was stirred at room temperature for 1.5 h. The mixture was partitioned between DCM and saturated NaHCO3 aqueous solution. The organic layer was washed with saturated NaHCO3 and brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel (DCM/MeOH=30:1) to afford the desired product (200 mg, 53.9% yield) as an off-white solid.

112257-24-6, 112257-24-6 1-Boc-3-Carbamoylpiperazine 11042527, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Ren, Pingda; Liu, Yi; Li, Liansheng; Feng, Jun; Wu, Tao; US2014/288045; (2014); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

129799-08-2, 1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The compound (S) -5- (1 – ((tert-butoxycarbonyl) amino) ethyl) -2- (3- (cyclopropylmethoxy) -4-(difluoromethoxy) phenyl ) -oxazole-4-carboxylic Acid (0.25g, 0.53mmol), the compound 1,3-piperazinecarboxylate hydrochloride (150mg, 0.64mmol), 1- ethyl-3- (3-dimethylamine propyl Yl) carbodiimidehydrochloride (153mg, 0.80mmol) and N- hydroxy-7-aza-benzotriazole (181mg, 1.33mmol) was dissolved indichloromethane Dioxane (20 mL), and under conditions of 0 C to this solution was added dropwise N, Ndiisopropylethylamine(0.37mL, 2.13mmol), stirred at room temperature 17H, The solvent was removed, theconcentrate was subjected to column chromatography (eluent: Petroleumether / EtOAc (v / v) = 2/1), to give260mg yellow viscous Material, yield: 74%., 129799-08-2

129799-08-2 1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate 2756819, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Guangdong East Sunshine Pharmaceutical Co., Ltd; Zhang, Ying jun; Liu, Bing; Yu, Tian Zhu; Zhang, Xiang Yu; (348 pag.)CN105399698; (2016); A;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

120737-59-9, tert-Butyl 3-methylpiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution OF 3-METHYL-PIPERAZINE-L-CARBOXYLIC acid tert-butyl ester (1.0 g, 5.3 mmol) and OF L-BROMO-4-TRIFLUOROMETHYL-BENZENE (1.0 g, 4.4 mmol) in toluene (10 ml) were added sodium-tert butylate (0.6 g, 6.2 mmol), 2- (DICYCLOHEXYLPHOSPHINO) biphenyl (31 mg, 89 mmol), and tris (dibenzylideneacetone) dipalladium-chloroform complex (23 mg, 22 mmol). The reaction mixture was then stirred for 16 hours at 80 ¡ãC. After allowing to cool to room temperature the reaction mixture was concentrated IN VACUO and purified by column chromatography (Si02, 70g, heptane/ethyl acetate 0-30percent) to give the title compound as a light brown solid (0.47 g, 31 percent). MS (m/e): 345.2 (M+HT, 100percent).

120737-59-9, The synthetic route of 120737-59-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; WO2005/23260; (2005); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

630125-91-6, 4-((4-Ethylpiperazin-1-yl)methyl)-3-(trifluoromethyl)aniline is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,630125-91-6

Into a 50-mL round-bottom flask was placed 1-(tert-butoxycarbonyl)-7-((2-methyl-1-(phenylsulfonyl)-1H-pyrrolo[2m3-b]pyridin-4-yl)oxy)-1,2,3,4-tetrahydroquinoline-2-carboxylic acid (300 mg, 0.53 mmol), dichloromethane (20 mL), 4-[(4-ethylpiperazin-1-yl)methyl]-3-(trifluoromethyl)aniline (153 mg, 0.53 mmol), N-[(dimethylamino)-1H-1,2,3- triazolo-[4,5-b]pyridin-1-ylmethylene]-N-methylmethanaminium hexafluorophosphate N-oxide (405 mg, 1.06 mmol) and N,N-diisopropylethylamine (0.37 mL, 2.1 mmol). The solution was stirred at 45 C overnight then concentrated. The residue was purified on a silica gel column eluting with ethyl acetate/petroleum ether (1 : 1) to yield tert-Butyl 2-((4-((4-ethylpiperazin-1-yl)methyl)-3-(trifluoromethyl)phenyl)carbamoyl)-7-((2-methyl-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-4-yl)oxy)-3,4-dihydroquinoline-1(2H)-carboxylate (180 mg, 41%).

As the paragraph descriping shows that 630125-91-6 is playing an increasingly important role.

Reference£º
Patent; LYCERA CORPORATION; AICHER, Thomas Daniel; SKALITZKY, Donald J.; TOOGOOD, Peter L.; VANHUIS, Chad A.; (416 pag.)WO2019/200120; (2019); 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.611225-86-6,4-(4-Ethylpiperazin-1-ylmethyl)phenylamine,as a common compound, the synthetic route is as follows.,611225-86-6

4-((4-ethylpiperazin-1-yl)methyl)phenylamine(3.6g) was added to a solution of Compound 2-5(6.0g) in n-butanol(130ml). The mixture was reacted at 90C for 4.0 hours, cooled to room temperature, filtered, washed and dried to obtain a red solid in a yield of 81.8%. MS m/z(ESI): 426[M+H]+.

611225-86-6 4-(4-Ethylpiperazin-1-ylmethyl)phenylamine 1084996, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Si Chuan University; CSPC Zhongqi Pharmaceutical Technology (Shijiazhuang) Co., Ltd.; YANG, Shengyong; WEI, Yuquan; EP2578584; (2013); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

78818-15-2,78818-15-2, Benzyl 3-oxopiperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A. 4-(2-Chloro-quinolin-6-ylmethyl)-3-oxo-piperazine-1-carboxylic acid benzyl ester. To a solution of 3-oxopiperazine-1-carboxylic acid benzyl ester (4.65 g, 19.8 mmol) and 6-bromomethyl-2-chloroquinoline (5.40 g, 21.0 mmol) in 80 ML of a 3:1 mixture of THF:DMF at 0 C. is added sodium hydride (0.81 g, 20.2 mmol, 60% mineral oil dispersion).The resulting mixture is stirred for 1 hour at 0 C. then at room temperature for 18 hours.The reaction mixture is quenched with saturated NH4Cl solution, then diluted with EtOAc. The organic layer is washed sequentially with 1N HCl, water, saturated NaHCO3 and saturated NaCl, then dried over MgSO4, filtered and concentrated.The crude product is triturated in Et2O/hexanes/EtOAc and filtered to afford the title compound (6.96 g, 17.0 mmol) as a white solid. 1H NMR (CDCl3, 300 MHz) delta8.08 (d, 1H), 8.00 (d, 1H), 7.69 (s, 1H), 7,63 (dd, 1H), 7.41 (d, 1H), 7.35 (s, 5H), 5.15 (s, 2H), 4.78 (s, 2H), 4.28 (s, 2H), 3.70 (m, 2H), 3.32 (bs, 2H).

As the paragraph descriping shows that 78818-15-2 is playing an increasingly important role.

Reference£º
Patent; AVENTIS PHARMACEUTICALS INC.; US2004/102450; (2004); 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.122833-04-9,2-Methoxy-4-(4-methylpiperazin-1-yl)aniline,as a common compound, the synthetic route is as follows.

[00436] 2,5-Dichloro-N-(3-nitrobenzyl)pyrimidin-4-amine (150 mg, 0.5 mmol), 2- methoxy-4-(4-methylpiperazin-l-yl)aniline (166 mg, 0.75 mmol), and trifluoroacetic acid (57 mu, 0.75 mmol) was combined in sec-butanol (5 mL) and stirred overnight at 100 C. The mixture was then concentrated and purified by column chromatography (1087) (dichloromethane: methanol = 10: 1) to yield 184 mg (76%) of the title product as a pale- yellow solid. MS (ESI) m/z 484 (M+H)+.

122833-04-9, 122833-04-9 2-Methoxy-4-(4-methylpiperazin-1-yl)aniline 20136253, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; DANA-FARBER CANCER INSTITUTE, INC.; GRAY, Nathanael; TAN, Li; (219 pag.)WO2015/164614; (2015); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics