Heterocyclic Building Blocks-piperidine

79099-07-3, 1-Boc-4-Piperidone is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Reference Example 88iV-Methyl-iV-piperidiii-4-yl-methanesulfonainideTo a solution of l-BOC-4-piperidone (1.0 g) in methanol (10 mL) was added a solution of freshly prepared methylamine in methanol (1.0 mL). The reaction mixture was stirred for 1 hour and then sodium cyanoborohydride (0.315 g) was added. After stirring for 24 hours the reaction mixture was then diluted with dichloromethane, washed with sodium bicarbonate solution, dried (MgSO4) and the solvent removed in vacuo. The residue was purified by flash chromatography to yield 4-methylamino-piperidine-l-carboxylic acid tert- butyl ester (0.6Og).To a solution of 4-methylamino-piperidine-l-carboxylic acid tert-butyl ester (0.59g) in dichloromethane (10 mL) was added triethylamine (0.42 mL) followed by methane sulfonyl chloride (0.23 mL). After stirring for 3 hours the reaction mixture was then diluted with dichloromethane, washed with sodium bicarbonate solution, dried (MgSO4) and the solvent removed in vacuo. The residue was purified by flash chromatography to yield 4- (methanesulfonyl-methyl-amino)-piperidine-l-carboxylic acid tert-butyl ester (0.738 g). Treatment of this compound with HCl in dichloromethane/methanol gave the title compound, which was isolated as the hydrochloride salt (0.57 g). deltaH (400 MHz, de-dmso) 1.78 (m, 2H), 1.95 (m, 2H), 2.70 (s, 3H), 2.94 (s, 3H), 2.97 (m, 2H), 3.34 (m, 2H), 3.89 (m,lH), 8.74 (br s, 2H).

As the paragraph descriping shows that 79099-07-3 is playing an increasingly important role.

Reference£º
Patent; F.HOFFMANN-LA ROCHE AG; WO2009/53716; (2009); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5382-16-1,4-Piperidinol,as a common compound, the synthetic route is as follows.

Example 2 Preparation of 4-Hydroxy-Piperidine-1-Carboxylic Acid Isopropyl Ester Intermediate (2) To a stirred mixture of 4-hydroxypiperidine (53.8 g, 1.000 eq), triethylamine (71.8 g, 1.334 equivalents), and ethyl acetate (498.8 g) was added neat isopropyl chloroformate (78.0 g, 1.1966 equivalents) at a rate sufficiently slow to maintain the reaction mixture temperature at 10-17 C. with reactor jacket cooling. After the addition had been completed, the reaction mixture was stirred at 20 C. for 18 hours. Then water (100 g) was added, and the resulting mixture was stirred for 15 minutes before the phases were separated. The organic phase was washed with two 100-gram-portions of 20 wt % aqueous NaCl by stirring for 15 min at 150 rpm before separating the aqueous wash. After a final wash with water (100 g), the organic phase was concentrated by distillation on a rotary evaporator at reduced pressure to provide product (2) (91.1 g, 92.0% yield) as light amber oil of 96.8% purity by GC.

As the paragraph descriping shows that 5382-16-1 is playing an increasingly important role.

Reference£º
Patent; Gharbaoui, Tawfik; Fritch, John R.; Krishnan, Ashwin M.; Throop, Beverly Wolgast; Kato, Naomi S.; US2006/155129; (2006); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

503614-91-3, Ethyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The Mixture of product of example-VIII (25 g, 0.051 mol) and Methanolic solution of ammonia (200 ml, 15-18%, w/w) were heated at 65-70 C. in a Autoclave for 24 hrs. The solvent was evaporated under low pressure and solid residue obtained was suspended in 175 ml water and left under stirring for 2 hr. solid filtered through Buchner funnel and washed with water (50 ml*2), dried in vacuum at 60 C. to afford the desired product. Yield: 21.5 g, 91.48%

503614-91-3 Ethyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate 22240488, apiperidines compound, is more and more widely used in various.

Reference£º
Patent; Unichem Laboratories Limited; Sathe, Dhananjay D.; Das, Arijit; Surve, Yashwant; Ahire, Ramdas N.; (22 pag.)US2017/15663; (2017); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.106-52-5,1-Methylpiperidin-4-ol,as a common compound, the synthetic route is as follows.

Compound 1-methyl-4-piperidinol (1.26 g, 11 mmol) and NaH (240 mg, 12 mmol), were added into a round-bottom flask using DMF as a solvent. The mixture was stirred in ice water bath for 30 min, and 2-fluoro-5-nitrotrifluorotoluene (2.09 g , 10 mmol) was added, and the reaction was carried out at room temperature for 12 hours. The product 1-methyl-4-(4-nitro-2-(trifluoromethyl)phenylhydroxy)piperidine (2.9 g, yield: 95%) was obtained by purification.

The synthetic route of 106-52-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Shanghai Institute of Materia Medica, Chinese Academy of Sciences; HU, Youhong; GENG, Meiyu; REN, Wenming; DING, Jian; GUAN, Xiaocong; AI, Jing; WANG, Lang; PENG, Xia; LIU, Yang; DAI, Yang; ZENG, Limin; (45 pag.)EP3584239; (2019); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5382-16-1,4-Piperidinol,as a common compound, the synthetic route is as follows.

4-chloronitrobenzene (31.5 g, 200 mmol) was dissolved in N,N-dimethylacetamide (80 ml), and potassium carbonate (35.9 g, 260 mmol) and 4-hydroxypiperidine (22.3 g, 220 mmol) were added thereto, followed by stirring under heat at 130 C. for 3 hours. After cooling to room temperature, water was added to the mixture, and the precipitate was collected by filtration. The obtained solid was dried under reduced pressure, thereby obtaining 4-hydroxy-N-(4-nitrophenyl)piperidine (41.3 g, 93%) as a yellow solid.1H-NMR (CDCl3): delta (ppm) 1.52-1.74 (m, 2H), 1.92-2.04 (m, 2H), 3.14-3.35 (m, 2H), 3.73-4.08 (m, 3H), 6.82 (d, J=9.6 Hz, 2H), 8.11 (d, J=9.6 Hz, 2H)

The synthetic route of 5382-16-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; TAIHO PHARMACEUTICAL CO., LTD.; US2011/319413; (2011); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.79099-07-3,1-Boc-4-Piperidone,as a common compound, the synthetic route is as follows.

A stirred solution of 60percent aqueous sodium hydroxide solution (117 mg, 2.92 mmol) in dimethyl sulfoxide (2 ml) was added with trimethyl sulfoxinium iodide (627 mg, 2.79 mmol) under a nitrogen atmosphere. The mixture was stirred for 45 minutes in ice-water bath, added slowly with 4-oxo-piperidine-1-carboxylic acid tert-butyl ester (500 mg, 2.5 mmol) while maintaining the temperature below 10¡ã C. Upon completion of the addition, the mixture was stirred for 5 minutes in the ice-water bath and stirred for another 2 hours at 25¡ã C. in an oil bath. The resulting mixture was added with cold water (20 ml) and extracted with ethyl ether (20 ml.x.3). The combined organic extracts were dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure to give 1-oxa-6-aza-spiro[2.5]octane-6-carboxylic acid tert-butyl ester (479 mg, 85.5percent) as a white solid.MS m/z (ESI): 213 [M+1]

79099-07-3 1-Boc-4-Piperidone 735900, apiperidines compound, is more and more widely used in various.

Reference£º
Patent; Tang, Peng Cho; Su, Yidong; Zhang, Lei; Xiao, Lu; US2010/4239; (2010); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

79099-07-3, 1-Boc-4-Piperidone is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

BAST (222.4 g, 1.01 mol, 20.00 equiv) was added dropwise into a solution of tert-butyl 4- oxopiperidine- 1 -carboxylate (10 g, 50.19 mmol, 1.00 equiv) in dichloromethane (200 mL) at 0C under nitrogen. The resulting solution was stuffed overnight at 25C. The reaction was then quenched by saturated sodium bicarbonate, extracted with dichloromethane, washed with brine, dried over sodium sulfate, and concentrated under vacuum. The residue was purified by a silica gel column eluting with ethyl acetate/petroleum ether (1/10). This resulted in the title compound (9.7 g, 87%) as a light yellow solid.

79099-07-3 1-Boc-4-Piperidone 735900, apiperidines compound, is more and more widely used in various.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; CHEN, Huifen; CHU, Yanyan; DO, Steven; ESTRADA, Anthony; HU, Baihua; KOLESNIKOV, Aleksandr; LIN, Xingyu; LYSSIKATOS, Joseph P.; SHORE, Daniel; VERMA, Vishal; WANG, Lan; WU, Guosheng; YUEN, Po-wai; WO2015/52264; (2015); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5382-16-1,4-Piperidinol,as a common compound, the synthetic route is as follows.

Step: 3A-1Synthesis of l-(4-Nitro-phen -piperidin-4-ol.Procedure:K2C03 (2.44g, 0.0177mol) followed by l-Fluoro-4-nitro-benzene (lg, 0.00708mol) was added to a stirred solution of Piperidin-4-ol (0.86g, 0.00850mol) in DMF (5ml) and stirred at RT. The resulting reaction mixture was heated at 60C. The reaction was monitored by the TLC (50% EtOAc: hexane). The reaction mixture was cooled to RT, and ice was added into it to precipitate a solid which was collected to afford 1.45g (92% yield) of l-(4- Nitro-phenyl)-piperidin-4-ol.

The synthetic route of 5382-16-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; AURIGENE DISCOVERY TECHNOLOGIES LIMITED; SENGUPTA, Saumitra; RAJAGOPALAN, Srinivasan; BELAVAGI, Ningaraddi; RAMACHANDRA, Muralidhara; WO2012/59932; (2012); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

79099-07-3, 1-Boc-4-Piperidone is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

In a reaction flask, 20 g (0.1 mol) of N-Boc-4-piperidone was added to 200 mL of toluene,Then, 18 g (0.2 mol) of dimethyl carbonate and 22 g (0.2 mol) of potassium t-butoxide were added, heated to 70 ¡ã C for 1 h, cooled to room temperature, The reaction solution was adjusted to pH 7 with 1 mol / L HCl, extracted with ethyl acetate, dried over anhydrous sodium sulfate and spin dried to give a yellow oilN-Boc-3-carboxylate-4-piperidone 25 g;

79099-07-3 1-Boc-4-Piperidone 735900, apiperidines compound, is more and more widely used in various.

Reference£º
Patent; Mu Kairui; (17 pag.)CN107163045; (2017); A;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.55695-51-7,(4-Chlorophenyl)(piperidin-4-yl)methanone hydrochloride,as a common compound, the synthetic route is as follows.

To a stirred suspension of (4-chlorophenyl) (4-piperidyl) methanone hydrochloride [(100MG,] 0.41mmol) in DCM [(5ML)] was added triethylamine (104mg, 1. [03MMOL)] and 2- [BROMO-L- (2-THIENYL)-L-ETHANONE] (76mg, 0. [37MMOL).] The reaction was stirred at room temperature for 1 hour. The crude reaction mixture was transferred to a separating funnel and washed with 2M hydrochloric acid. The organic layer was separated and washed with water then evaporated to yield an impure solid. This material was partitioned between DCM and saturated sodium hydrogencarbonate solution. The organic layer was separated and washed with brine then dried [(MGS04),] filtered and evaporated to give a solid. This solid was dissolved in ether and treated with hydrochloric acid in ether. The resulting solid was filtered off to yield the product as a solid (24mg, 17%). NMR (DMSO-d6): 2.00 [(M,] 4H), 3.20 [(M,] 2H), 3.50 [(M,] 1H), 3.60 [(M,] 2H), 5.00 (s, 2H), 7.35 (s, 1H), 7.60 (d, 2H), 8.05 (d, 2H), 8.10 (s, 1H), 8.20 (d, [1H),] 10.20 (br s, 1H) ; m/z: 348.

The synthetic route of 55695-51-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2004/11410; (2004); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem