Month: March 2022

189333-49-1, 3-Benzyl-3,9-diazaspiro[5.5]undecane is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Preparation of compound 2The mixture of the compound 1 (2.44 g) (US6291469, page 62, column 123), BoC2O (2 g) in MeOH (30 mL) was stirred overnight. After evaporation, the residue was purified by column to give the compound 2 (3 g, 87%).

189333-49-1, As the paragraph descriping shows that 189333-49-1 is playing an increasingly important role.

Reference：
Patent; ASTRAZENECA AB; WO2007/30061; (2007); 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.1067915-34-7,Ethyl 1-benzyl-5,5-difluoro-4-oxopiperidine-3-carboxylate,as a common compound, the synthetic route is as follows.

1067915-34-7, 10245] A mixture of compound 6 (6.5 g, 21.9 mmol) in hydrochloric acid (6 N, 180 mE) was stirred at 1100 C. for 16 hours. The mixture was adjusted pH to 8 with 1 N aqueous NaOH solution. The mixture was extracted with EtOAc (180 mE), the organic layer was dried over Na2SO4 and concentrated in vacuo to give the crude product compound 7 as whitesolid. ECMS: 244 [M+1].

As the paragraph descriping shows that 1067915-34-7 is playing an increasingly important role.

Reference：
Patent; Novira Therapeutics, Inc.; Hartman, George D.; US2015/274652; (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.141774-61-0,tert-Butyl (piperidin-2-ylmethyl)carbamate,as a common compound, the synthetic route is as follows.

To a solution of Compound L (14.71 g, 46.7 mmol) in THF(250 mE) at -60 C. was added 0.5 M KHMDS solution inTHF (103 mE) dropwise. After stirring at -60 C. for 30 mithe reaction mixture was added to a solution of 4-nitrophenylchloroformate at -60 C. (9.41 g, 46.7 mmol) in THF (200This reaction mixture was then stirred for 30 mm at -60C., followed by addition of piperidine-2-yl-methylcarbamicacid tert-butyl ester, also referred to herein as (R,S)-piperi-dine-2-yl-methylcarbamic acid tert-butyl ester, (5.0 g, 23.3mmol) in portions. The reaction was allowed to warm toambient temperature and then stirred for 18 h. The reactionwas then concentrated under vacuum, and the residue dilutedwith EtOAc (500 mE). The mixture was then washed withwater (2×250 mE) and brine (250 mE). The organic layer wasseparated, dried over Na2504, and filtered. Removal of sol-vents under vacuum afforded crude Compound N. CrudeCompound N was purified by flash chromatography using100% EtOAc. Removal of solvent under vacuum affordedCompound N in 50% yield (6.5 g, 11.7 mmol) as a whitesolid. EC-MS [M+H] 556.1 (C30H41N307+H, calc: 555.3)., 141774-61-0

The synthetic route of 141774-61-0 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Signature Therapeutics, Inc.; Jenkins, Thomas E.; Husfeld, Craig O.; US9139612; (2015); B2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

3612-20-2, 1-Benzylpiperidin-4-one is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Synthesis of 1-Benzyl-3,3-dimethylpiperid-4-one 1-Benzylpiperid-4-one (9.45 g, 8.92 mL, 49.98 mmol, 1.0 eq) was added to a suspension of sodium hydride (3.50 g of a 60% suspension in oil, 87.50 mmol, 1.75 eq) in tetrahydrofuran (100 mL). Iodomethane (9.84 g, 3.93 mL, 62.96 mmol, 1.26 eq) was added and the reaction heated to 60 C. for 5 hours. The reaction was filtered and the filtrate concentrated. The residue was partitioned between EtOAc (150 mL) and water (150 mL). The aqueous phase was extracted with EtOAc (150 mL). The organics were combined, washed with brine (150 mL), dried (Na2SO4), and concentrated under reduced pressure. Column chromatography (silica, 20?60% EtOAc-hexane) yielded the title compound as a colourless oil; 1H nmr (CDCl3) delta 7.36-7.26 (5H, m, C6H5), 3.56 (2H, s, CH2C6H5), 2.72 (2H, t, J 6.0 Hz, pipH-5 or H-6), 2.51 (2H, t, J 6.0 Hz, pipH-5 or H-6), 2.41 (2H, s, pipH-2), 1.13 (6H, s, 2*CH3); and 1-benzyl-3-methylpiperidin-4-one (3.12 g) as a colourless oil.

3612-20-2, The synthetic route of 3612-20-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Rigel Pharmaceuticals, Inc.; Goff, Dane; Payan, Donald; Carroll, David; Shaw, Simon; Yasumichi, Hitoshi; (285 pag.)US9409884; (2016); B2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

5166-67-6, Ethyl N-methylpiperidine-3-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

5166-67-6, 3-Methyl-5-(l -methylpiperidin-3-yl)-l ,2,4-oxadiazole (5c):I-N-methyl-ethyl nipecotate (4c) (0.7 g, 0.0041 mol) and acetamide oxime (0.75g, 0.0102 mol) were dissolved in 30 mL tetrahydrofuran. Sodium methoxide (l . l g, 0.0205 mol) was added and the mixture was heated at reflux for 2 hours. The mixture was concentrated to remove THF and partitioned between water (25 mL) and dichloromethane (1 x 25 mL). The aqueous layer was extracted with an additional 2 x 25 mL dichloromethane. The combined organics were washed with 1 chi 50 mL saturated sodium chloride, and dried over Na2SC>4. The dried organics were evaporated to an oil. The residue was chromatographed with 5 g silica gel, 5% methanol/ethyl acetate, to obtain 0.51 g of the free base. Hydrochloric acid in ethanol (2.5 M) (1.6 mL, 0.01 1 mol) was added and the mixture was concentrated to dryness. Crystallization from ethanol/MTBE afforded 436 mg white solid. MS (ESI) m/z 182 [M+H]+. NMR (DMSO-d6) 5 1.59- 1.66 (m, 1 H), 1.88- 1.98 (s, 2 H), 2.17-2.20 (d, 1 H), 2.34 (s, 3 H), 2.77 (s, 3 H), 2.92-2.95 (m, 1 H), 3.18-3.21 (m, 1 H), 3.37- 3.47, (d, 1H), 3.60-3.78, (m, 2H).

As the paragraph descriping shows that 5166-67-6 is playing an increasingly important role.

Reference：
Patent; MITHRIDION, INC.; ABRAHAM, Brent, D.; COPP, Richard, R.; FARNHAM, James, G.; HANSON, Seth, A.; HENDRICKSON, Michael, L.; OCKULY, Jeffrey, C.; TWOSE, Trevor, M.; VERDONE, Melinda, L.; WO2011/85406; (2011); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

768-66-1, 2,2,6,6-Tetramethylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,768-66-1

Experimental Section: Preparation of the reagent TMPMgCl·LiCl (5b): ; A dry and argon flushed 250 mL flask, equipped with a magnetic stirrer and a septum, was charged with freshly titrated i-PrMgCl·LiCl (100 mL, 1.2 M in THF, 120 mmol). 2,2,6,6-tetramethylpiperidine (TMPH) (19.8 g, 126 mmol, 1.05 equiv) was added dropwise at room temperature. The reaction mixture was stirred until gas evaluation was completed (ca. 24 h) at room temperature.

The synthetic route of 768-66-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Ludwig-Maximilians-Universitaet Muenchen; EP1810974; (2007); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

72551-53-2, Ethyl 1-benzylpiperidine-3-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

(l-Benzylpipeiidin-3-yl)methanol; To a solution of ethyl l-benzylpiperidine-3-carboxylate (1.0 g) in tetrahydrofuran (10 mL) at 5C under argon was added a IM solution of lithium aluminium hydride (4.04 mL) dropwise. The mixture was stirred for 1 hour at 5C and then quenched by the dropwise addition of ethyl acetate (5 mL). The mixture was warmed to room temperature and dichloromethane (150 mL) was added followed by saturated aqueous sodium potassium tartrate (50 mL). The mixture was stirred vigorously overnight. The layers were separated EPO and the organic layer was dried over magnesium sulfate and evaporated to give the title compound as a colourless oil (0.82 g, 99%).

72551-53-2, 72551-53-2 Ethyl 1-benzylpiperidine-3-carboxylate 2736370, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2006/67401; (2006); 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.24666-55-5,Benzyl (2,6-dioxopiperidin-3-yl)carbamate,as a common compound, the synthetic route is as follows.

A solution of 15 (4.0Og, 0.015 mol) in methanol (200 ml) and 2N HCl (15 ml) was hydrogenated over 5% Pd-C (100 mg) at 60 psi for 4 h. The catalyst was filtered off and the filtrate concentrated to dryness to give the title compound 16 as a white solid (2.61 g, 100%), mp 245 0C (dec) (lit. 235 0C (dec)). 1H NMR (400 MHz, DMSO-D6) delta ppm 11.22 (br s? IH), 8.68 (br s, 3H), 4.20 (dd, J=13.0, 5.3 Hz, IH), 2.77-2.65 (m, IH), 2.64- 2.56 (m, IH), 2.27-2.19 (m, IH)5 2.09-1.97 (m, IH)., 24666-55-5

As the paragraph descriping shows that 24666-55-5 is playing an increasingly important role.

Reference：
Patent; AUCKLAND UNISERVICES LIMITED; WO2008/7979; (2008); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

10338-57-5, 4-(Piperidin-1-yl)benzaldehyde is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: 4-Chloro-2-(methylthio)pyrimidine-5-carbohydrazide (2.2 mmol) was heated with ethanol (10 mL) and a few drops of glacial acetic acid. Substituted aldehyde (2.2 mmol) was added on the mixture and refluxed for 4 h. The reaction was finalized by thin layer chromatography control. The precipitate was filtered, dried and purified with methanol., 10338-57-5

10338-57-5 4-(Piperidin-1-yl)benzaldehyde 291354, apiperidines compound, is more and more widely used in various fields.

Reference：
Article; Akda?, Kadryi?Ye; Uenal, Goekhan; Tok, Fati?H; Aricio?lu, Feyza; Edi?P Temel, Hali?De; Kocyi??i?T-Kaymakcio?lu, Bedi?A; Acta poloniae pharmaceutica; vol. 75; 5; (2018); p. 1147 – 1159;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

236406-22-7, 1-Boc-4-(Aminomethyl)-4-methylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a homogeneous mixture of tert-butyl 4-(aminomethyl)-4-methylpiperidine- 1- carboxylate (53.0 mg, 0.23 mmol) in anhydrous DCM (2 mL), under nitrogenatmosphere, was added DIPEA (0.17 mL, 0.97 mmol) followed by 4-chlorobenzoyl chloride (0.05 mL, 0.390 mmol). The resulting mixture was stirred at ambient temperature for 4 hours, before being partitioned between DCM and water. The layers were separated and the aqueous layer was extracted twice more with DCM. These organic extracts were combined with the original organic layer and were concentrated invacuo to afford the title compound as an amber residue, which was used in the next step without purification. MS(ES): m/z = 367 [M+H]. tR = 1.00 mm (Method A)., 236406-22-7

The synthetic route of 236406-22-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; FLEXUS BIOSCIENCES, INC.; BECK, Hilary Plake; JAEN, Juan Carlos; OSIPOV, Maksim; POWERS, Jay Patrick; REILLY, Maureen Kay; SHUNATONA, Hunter Paul; WALKER, James Ross; ZIBINSKY, Mikhail; BALOG, James Aaron; WILLIAMS, David K.; MARKWALDER, Jay A.; SEITZ, Steven P.; CHERNEY, Emily Charlotte; ZHANG, Liping; SHAN, Weifang; GUO, Weiwei; HUANG, Audris; (231 pag.)WO2016/73774; (2016); A2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem