Category: 112257-12-2

112257-12-2, tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A suspension of tert-butyl 4-(2-azidoacetyl)pipera-zine-1-carboxylate (2.92 g, 9.51 mmol) and sodium azide(1.54 g, 23.7 mmol) in CH3CN (47 mE) was refluxed for 1hour and cooled to room temperature. The reaction mixturewas diluted with EtOAc, washed with water and brine, driedover Na2504, filtered and concentrated in vacuo. The residuewas purified by recrystallization from EtOAc and hexanes toafford tert-butyl 4-(2-azidoacetyl)piperazine- 1 -carboxylate(2.28 g, 89%) as a white solid. ?H-NMR (CDC13, Varian, 400MHz): oe 1.47 (9H, s), 3.33-3.38 (2H, m), 3.42-3.50 (4H, m),3.58-3.66 (2H, m), 3.95 (2H, s)., 112257-12-2

As the paragraph descriping shows that 112257-12-2 is playing an increasingly important role.

Reference£º
Patent; HANDOK INC.; CMG Pharmaceutical Co., Ltd.; Kim, Moonsoo; Lee, Chaewoon; Lee, Gilnam; Yoon, Cheolhwan; Seo, Jeongbeob; Kim, Jay Hak; Lee, Minwoo; Jeong, Hankyul; Choi, Hyang; Jung, Myung Eun; Lee, Ki Nam; Kim, Hyun Jung; Kim, Hye Kyoung; Lee, Jae Il; Lee, MinWoo; Kim, Misoon; Choi, Soongyu; (124 pag.)US2016/168156; (2016); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

112257-12-2, tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Compound D_1 (477 mg, 3 mmol), compound G_1 (1 ¡¤ 38 g, 4.5 mmol), 15 mL of acetonitrile was added to a 50 mL single-mouth flask, and the mixture was heated under argon atmosphere. The mixture was heated under reflux, followed by TLC. Acetonitrile, the residue was dissolved with as little CH2CI2 as possible. A large amount of ether was added to precipitate a solid. The solid was carefully sucked out into an Erlenmeyer flask. It was necessary to allow ether to remain on the surface. The ether was immediately blown dry with argon, and the cone was dried. The bottle is sealed with a sealing membrane and kept out of the air. The product was a pink solid 700 mg (compound H-1) with a yield of 50%., 112257-12-2

112257-12-2 tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate 15829155, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; East China University of Science and Technology; Qian Xuhong; Xu Yufang; Jia Xiaotong; Zhu Weiping; Yang Youjun; (14 pag.)CN107619397; (2018); A;,
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.112257-12-2,tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate,as a common compound, the synthetic route is as follows.

4-(2-Oxo-2-piperazin-1-ylethyl)morpholine (42-2) Morpholine (0.22 g, 2.59 mmol), 42-1 (0.61 g, 1.99 mmol) and DIEA (0.33 g, 2.59 mmol) were dissolved in DMF (2 mL) and stirred for 18 hours at room temperature. The DMF was then removed under reduced pressure and the residue partitioned between water and methylene chloride. The methylene chloride was drawn off, dried and evaporated to a solid to afford 42-2. This recovered product was treated with neat trifluoroacetic acid and the excess trifluoroacetic acid evaporated off. The resulting residue was partitioned between methylene chloride and aqueous Na2CO3. The free base did not extract from the aqueous so the aqueous was evaporated to dryness, washed the methanol, and the solids filtered off to afford 42-2. 1H-NMR(CD3O): 3.69(t, 4H); 3.59 (t, 2H); 3.54(t, 2H); 3.22(s, 2H); 2.83(t, 2H); 2.77(t, 2H); 2.49(t, 4H).

112257-12-2, 112257-12-2 tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate 15829155, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; Bilodeau, Mark T.; Hartman, George D.; Hoffman JR., Jacob M.; Sisko, John T.; Manley, Peter J.; Smith, Anthony M.; Tucker, Thomas J.; Lumma JR., William C.; Rodman, Leonard; US2002/137755; (2002); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

112257-12-2, tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step G. 6-Chloro-12-(2-oxo-2-piperazin-1-ylethoxy)-2,4,8,22-tetraazatetracyclo[14.3.1.1(3,7).1(9,13)]docosa-1(20),3(22),4,6,9(21),10,12,16,18-nonaene bis(trifluoroacetate) 6-Chloro-2,4,8,22-tetraazatetracyclo[14.3.1.1(3,7).1(9,13)]docosa-1(20),3(22),4,6,9(21),10,12,16,18-nonaen-12-ol (100 mg, 0.30 mmol), potassium carbonate (102 mg, 0.74 mmol), and tert-butyl 4-(bromoacetyl)piperazine-1-carboxylate (181 mg, 0.59 mmol) were stirred in N,N-dimethylformamide (2 mL) for 16 hours at 70 C. Purification by preparative LCMS (pH 2) and treatment with 1:1 trifluoroacetic acid and methylene chloride followed by evaporation gave the desired compound (33 mg, 19%). LCMS for C24H26ClN6O2 (M+H)+: m/z=465.2.

112257-12-2, 112257-12-2 tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate 15829155, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; INCYTE CORPORATION; US2009/286778; (2009); 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.112257-12-2,tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate,as a common compound, the synthetic route is as follows.

To a stirred solution of 2-((lH-indol-4-yl)oxy)-6-(trifluoromethyl)isonicotinonitrile 1 (150 mg, 0.5 mmol) (from Example 49, Step 1) in DMF (12 mL) at 0 C, were added fert-butyl 4-(2-bromoacetyl)piperazine-l-carboxylate 2 (228 mg, 0.74 mmol), Cs2C03 (324 mg, 0.99 mmol) and n-Bu4NBr (8 mg, 0.02 mmol). The reaction mixture was warmed to RT and stirred for 12 h. The mixture was quenched with water (30 mL) and extracted with EtOAc (2 x 30 mL). The combined organic extracts were washed with brine (20 mL), dried (Na2S04), filtered and concentrated under reduced pressure to obtain the crude. The crude was triturated with Et20 (2 x 10 mL) to afford compound 3 (150 mg, 57%) as white solid. 1H NMR (500 MHz, OMSO-d6): delta 8.32 (s, 1H), 8.09 (s, 1H), 7.47 (d, J= 8.1 Hz, 1H), 7.40 (d, J= 3.2 Hz, 1H), 7.29 (t, J= 8.0 Hz, 1H), 7.03 (d, J= 7.8 Hz, 1H), 6.31 (d, J= 3.2 Hz, 1H), 5.37 (s, 2H), 3.72-3.70 (m, 2H), 3.59-3.56 (m, 4H), 3.48-3.46 (m, 2H), 1.56 (s, 9H); LC-MS (ESI): m/z 474.0 (M+ – Tiu).

112257-12-2, As the paragraph descriping shows that 112257-12-2 is playing an increasingly important role.

Reference£º
Patent; PHARMAKEA, INC.; ROWBOTTOM, Martin W.; HUTCHINSON, John Howard; CALDERON, Imelda; (202 pag.)WO2016/144703; (2016); 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.112257-12-2,tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate,as a common compound, the synthetic route is as follows.

The 4-(2-bromo acetyl)-piperazine-1-carboxylic acid tert butyl ester (2.0 g, 6.5 mmol, 1 eq) was added to a stirred solution of N-[(5S)-{3-(3-fluoro-4-hydroxy-phenyl)}-2-oxo-oxazolidin-5-ylmethyl]-acetamide (step 4, example 1) (1.75 g, 6.5 mmol, 1 eq) and potassium carbonate (1.138 g, 9.75 mmol, 1.5 eq) in DMF (32 ml). The resulting mixture was heated to 80 C. and stirred for 30 min, then cooled and dichloromethane/methanol (100 ml, 9/1) added. The organic layer was then washed with water (2*10 ml) and saturated sodium chloride solution, and then dried over MgSO4. This was then filtered and the solvent is evaporated. The residue was purified by chromatography (dichloromethane/methanol 9/1) to give the product (1.72 g, 55%) as a brown solid.

112257-12-2, As the paragraph descriping shows that 112257-12-2 is playing an increasingly important role.

Reference£º
Patent; Morphochem Aktiengesellschaft Fuer Kombinatorische Chemie; Hubschwerlen, Christian; Specklin, Jean-Luc; Baeschlin, Daniel; Schmitt, Christine; Mueller, Stefan; Cappi, Michael W.; US9133213; (2015); B2;,
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.112257-12-2,tert-Butyl 4-(2-bromoacetyl)piperazine-1-carboxylate,as a common compound, the synthetic route is as follows.

General procedure: To a solution of bromide 3a-g (1.0 eq) in DMSO was added NaN3 (1.2 eq) at room temperature. Then the reaction mixture was heated to 50 C and kept for 3 h. Upon completion, EtOAc and H2O were added. The aqueous layer was extracted with EtOAc; the combined organic layers were washed with H2O for several times to remove the DMSO, and then washed with brine, dried over MgSO4 and evaporated to give the corresponding products 4a-g. Compounds 4d and 4e were known compounds [44] and therefore not characterized in this work., 112257-12-2

The synthetic route of 112257-12-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Yu, Bin; Wang, Sai-Qi; Qi, Ping-Ping; Yang, Dong-Xiao; Tang, Kai; Liu, Hong-Min; European Journal of Medicinal Chemistry; vol. 124; (2016); p. 350 – 360;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics