Category: 259808-67-8

259808-67-8, 1-Boc-3,3-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

80.1: 4-(6-Methoxy-pyridine-2-carbonyl)-3,3-dimethyl-piperazine-1-carboxylic acid tert-butyl ester A mixture of 410 mg (2.28 mmol) 6-methoxy-2-pyridinecarboxylic acid and 400 muL (3.02 mmol) 1-chloro-N,N,2-trimethylpropenylamine in 10 mL THF was stirred at RT. After 1.5 h, 600 mg (2.66 mmol) 3,3-dimethyl-piperazine-1-carboxylic acid tert-butyl ester and 1.00 mL (5.81 mmol) DIPEA was added and the reaction mixture was stirred at RT for 30 min The reaction mixture was diluted with saturated NaHCO3 solution and extracted with EtOAc. The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by flash chromatography (PE/EtOAc=1/1).Yield: 780 mg (84%)ESI-MS: m/z=350 (M+H)+ Rt(HPLC): 1.23 min (method 3), 259808-67-8

259808-67-8 1-Boc-3,3-Dimethylpiperazine 22710387, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; HEIMANN, Annekatrin; DAHMANN, Georg; GRUNDL, Marc; MUELLER, Stephan Georg; WELLENZOHN, Bernd; US2013/158042; (2013); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

259808-67-8, 1-Boc-3,3-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirring solution of tert-butyl 3,3-dimethylpiperazine-1-carboxylate (300 mg, 1.4 mmol) in DCM (3 mL) was added MsCl (321 mg, 2.8 mmol) and K2CO3(425 mg, 4.2 mmol). After being stirred at 20 C for 4 hrs, the resulting mixture was diluted with DCM (80 mL), then washed with water (30 mL) and brine (30 mL), dried over anhydrous Na2S04and concentrated in vacuo. The residue was purified by column chromatography (eluting with PE/EA=5/1, v:v) to give tert-butyl 3,3-dimethyl-4-methylsulfonyl-piperazine-l-carboxylate (270 mg) as a colorless oil.

259808-67-8, The synthetic route of 259808-67-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; CHENG, Zhanling; HAN, Xingchun; JIANG, Min; WANG, Jianhua; WANG, Yongguang; YANG, Song; (211 pag.)WO2018/1952; (2018); 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.259808-67-8,1-Boc-3,3-Dimethylpiperazine,as a common compound, the synthetic route is as follows.

8-tert-butyl-6-(4-fluorophenyl)imidazo[l,2-b]pyridazine-2-carboxylic acid (5g, 16 mmol), DMF (l20mL), HATU (7.3g, 19.2 mmol), tert-butyl 3, 3 -dimethylpiperazine-l -carboxylate (4.lg, 1.92 mmol) and DIPEA (lOmL, 57.4 mmol) afforded tert-butyl 4-(8-(tert-butyl)-6- (4-fluorophenyl)imidazo [l,2-b]pyridazine-2-carbonyl)-3 ,3 -dimethylpiperazine- 1 – carboxylate that was dissolved in 4N HC1 solution in l,4-dioxane (60 mL) affording 4-(8- (tert-butyl)-6-(4-fluorophenyl)imidazo[l,2-b]pyridazine-2-carbonyl)-3,3- dimethylpiperazine hydrochloride (6.5g, 97%) as a solid. 1H NMR (401 MHz, DMSO) d 9.71 (bs, 2H), 8.57 (s, 1H), 8.17 – 8.10 (m, 2H), 7.50 (s, 1H), 7.44 – 7.36 (m, 2H), 4.16 – 4.08 (m, 2H), 3.35 – 3.27 (m, 2H), 3.23 – 3.14 (m, 2H), 1.61 (s, 6H), 1.59 (s, 9H)., 259808-67-8

As the paragraph descriping shows that 259808-67-8 is playing an increasingly important role.

Reference£º
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; AURELIO, Luigi; BUNNETT, Nigel; FLYNN, Bernard Luke; GIANG, Le; (125 pag.)WO2019/124567; (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.259808-67-8,1-Boc-3,3-Dimethylpiperazine,as a common compound, the synthetic route is as follows.

2,2-dimethylpiperazine (1 1 .5 kg, 101 mol) was dissolved in ethanol (48.5 L) and the solution was cooled to approximately 9C. Di-tert-butyl dicarbonate (21 .9 kg, 100 mol) was dissolved in ethanol (41 .7 L). The solution of di-tertbutyl dicarbonate was added to the solution of dimethylpiperazine over a period of 2 h 30 min, keeping the temperature of the reaction below 15C. Ethanol (12.4 L) was added and the solution was stirred overnight at a temperature between 12-25C. The reaction was warmed to reflux and 75 L were distilled off. Ethanol (76 L) was added to the reaction and the solution was heated to 52C and transferred to a suspension of D,L-tartaric acid (7.5 kg, 50.0 mol) in ethanol (25.2 L), and warmed to 51 C. Ethanol (25.3 L ) was added and the reaction was kept at 20C overnight. The precipitate was filtered off and washed with ethanol (28.1 L). The solid was dried in a vacuum oven at 50C overnight to yield compound (XVIII) (27.1 kg, 93%) with 99% purity according to GC analysis.

259808-67-8, As the paragraph descriping shows that 259808-67-8 is playing an increasingly important role.

Reference£º
Patent; H. LUNDBECK A/S; JACOBSEN, Mikkel Fog; BRANDES, Sebastian; WO2014/96151; (2014); 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.259808-67-8,1-Boc-3,3-Dimethylpiperazine,as a common compound, the synthetic route is as follows.

Reference Example 46 2-(2,2-Dimethyl-piperazin-l-yl)-acetamideTo a solution of 3,3-dimethyl-piperazine-l-carboxylic acid tert-butyl ester (0.55 g, 2.57 mmol) in acetonitrile (10 mL) were added 2-bromoacetamide (0.42 g, 3.08 mmol), potassium carbonate (1.06 g, 7.70 mmol) and tetrabutylammonium iodide (95 mg, 0.257 mmol). The reaction mixture was heated at 60 C for 18 h, then concentrated in vacuo. The resulting residue was partitioned between DCM and water. The organic layer was separated, dried (Na2SO4), and concentrated in vacuo to give 4-carbamoylmethyl-3,3-dimethyl- piperazine-1-carboxylic acid tert-butyl ester as a cream solid. 4-Carbamoylmethyl-3,3- dimethyl-piperazine-1-carboxylic acid tert-butyl ester was subsequently BOC-deprotected by using the general method to give the title compound as a white solid (0.43 g, 97 %). [M + H]+ 172.1, 259808-67-8

259808-67-8 1-Boc-3,3-Dimethylpiperazine 22710387, apiperazines compound, is more and more widely used in various fields.

Reference£º
Patent; F.HOFFMANN-LA ROCHE AG; WO2009/53716; (2009); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics

259808-67-8, 1-Boc-3,3-Dimethylpiperazine is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

j00268j 8-Cyclopropyl-6-(4-fluorophenyl)imidazo[ 1 ,2-b]pyridazine-2-carboxylic acid (80 mg, 0.27 mmol) was dissolved in DMF (3.4 mL) and DIPEA (121.7 mg, 164 tL, 0.94 mmol) followed by tert-butyl 3,3-dimethylpiperazine-1-carboxylate (69.20 mg, 0.3229 mmol) were successively added at r. t. After 2 mi HATU (153.5 mg, 0.40 mmol) was added and the reaction mixture was stirred at r.t. ON. Water was added and the reaction mixture and the mixture was extracted with EtOAc. The resulting organic phase was washed twice with a 1:1 mixture of water and brine, dried over anhydrous Mg504, filtered and evaporated under reduced pressure. The resulting crude product was used as such in the next reaction. LC-MS:mlz = 494.26 (M+Hj.

259808-67-8, 259808-67-8 1-Boc-3,3-Dimethylpiperazine 22710387, apiperazines compound, is more and more widely used in various.

Reference£º
Patent; VERTEX PHARMACEUTICALS INCORPORATED; FARMER, Luc J.; FOURNIER, Pierre-Andre; LESSARD, Stephanie; LIU, Bingcan; ST-ONGE, Miguel; STURINO, Claudio; SZYCHOWSKI, Janek; YANNOPOULOS, Constantin; WO2015/48245; (2015); A1;,
Piperazine – Wikipedia
Piperazines – an overview | ScienceDirect Topics