Day: March 24, 2022

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5166-67-6,Ethyl N-methylpiperidine-3-carboxylate,as a common compound, the synthetic route is as follows.

5166-67-6, A solution of (R)-ethyl 1-methylpiperidine-3-carboxylate (5.69 g, 33 mmol) in ether (20 ml) was added dropwise to a stirred solution of lithium aluminum hydride (36.6 ml of a 1M solution in THF, 36.6 mmol) in ether (85 ml) cooled to maintain a reaction temperature of 20 C. The mixture was stirred for 1.5 hours at ambient temperature and then water (1.4 ml), 15% aqueous sodium hydroxide solution (1.4 ml) and then water (4.3 ml) were added. The insolubles were removed by filtration and the volatiles removed from the filtrate by evaporation to give (R)-(1-methylpiperidin-3-yl)methanol (4.02 g, 94%) as a colourless oil. 1H NMR Spectrum: (DMSOd6) 1.06(q, 1H); 1.51-1.94(m, 5H); 2.04(s, 3H); 2.34(br s. 1H); 2.62(m, 1H); 2.78(d, 1H); 3.49(m, 1H); 3.59(m. 1H); MS-ESI: 130 [MH]+.

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

Reference：
Patent; Zeneca Limited; Zeneca Pharma S.A.; US6414148; (2002); B1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

1158759-06-8, tert-Butyl 3-amino-3-methylpiperidine-1-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To 3.15 ml 1M lithium aluminium hydride in THF was added at 5-10 C. drop-wise a solution of 225 mg (1.05 mmol) rac-3-amino-3-methyl-piperidine-1-carboxylic acid tert-butyl ester in 4 ml dry THF. The reaction mixture was heated to 65 C. for 1 h. The turbid reaction solution was cooled with an ice bath and below 12 C., were added drop-wise 0.13 ml water, 0.32 ml 2N NaOH and further 0.19 ml water. The suspension was diluted with tert-butyl methyl ether, dried over sodium sulfate, filtered and acidified with 2N HCl in diethyl ether. Evaporation provided 210 mg of the title compound as a colourless semisolid. MS (m/e): 129.3 (M+H)., 1158759-06-8

The synthetic route of 1158759-06-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Kolczewski, Sabine; Pinard, Emmanuel; Stalder, Henri; US2010/197715; (2010); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

885279-92-5,885279-92-5, 1-Boc-1,8-diaza-spiro[4.5]decane is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A 100-mL round-bottom flask was charged with 4-nitrophenyl 3-acetamido-1H- pyrazole-1-carboxylate (2.32 g, 7.99 mmol, 1.50 equiv), DCM (20 mL), tert-butyl 1,8- diazaspiro[4.5]decane-1-carboxylate (1.28 g, 5.33 mmol, 1.00 equiv), and triethylamine (1.62 g, 16.0 mmol, 3.00 equiv). The resulting solution was stirred overnight at room temperature and quenched with water (50 mL). The resulting solution was extracted with DCM (2 x 80 mL) and the organic layers were combined, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was chromatographed on a silica gel column to provide 1.90 g (61% yield) of tert-butyl 8-(3 -acetamido- 1 H-pyrazole- 1 -carbonyl)- 1,8 – diazaspiro[4.5]decane-1-carboxylate as a yellow oil. LCMS (ESI, m/z): 392 [M+H].

885279-92-5 1-Boc-1,8-diaza-spiro[4.5]decane 34178602, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; ABIDE THERAPEUTICS, INC.; WEBER, Olivia D.; SHAGHAFI, Michael B.; GRICE, Cheryl A.; JONES, Todd K.; (274 pag.)WO2017/87854; (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.301225-58-1,tert-Butyl 4-(propylamino)piperidine-1-carboxylate,as a common compound, the synthetic route is as follows.

Step A 4-(N-(N-(4-Nitrobenzyl)carbamoyl)-N-(prop-1-yl)amino)-piperidinetrifluoroacetate The title compound was prepared by the reaction of 4-(N-(prop-1-yl)amino)-1-tert-butoxycarbonylpiperidine (prepared by the method described in Example 1, Step A, using 1-propylamine in place of methylamine) with (4-nitrobenzyl)isocyanate (prepared from phosgene and (4-nitrobenzyl)amine), followed by treatment of the product with 50% TFA in CH2Cl2 to remove the tert-butoxycarbonyl group, affording the title compound. ESI-MS: 321.2 (M+H)., 301225-58-1

301225-58-1 tert-Butyl 4-(propylamino)piperidine-1-carboxylate 22458258, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Merck & Co., Inc.; US6399619; (2002); B1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

297172-16-8, (4-Methylpiperidin-4-yl)methanol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 4: 4-((4-methylpiperidin-4-yl)methoxy)-9-(2-trimethylsilanyl-ethoxymethyl)-9H- dipyridor2,3-b;4′,3′-dlpyrrole-6-carbonitrileTo a solution of (4-methylpiperidin-4-yl)methanol (989 mg, 7.7 mmol) in 1,4-dioxane (18 mL) and N,N-dimethylformamide (12 mL) was added sodium hydride as 60% dispersion in mineral oil (670 mg, 28 mmol). The reaction mixture was stirred at ambient temperature for 5 minutes before 4-chloro-9-(2-trimethylsilanyl-ethoxymethyl)-9H- dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile (428 mg, 1.2 mmol) was added in one portion and the reaction mixture was heated at 40C for 18 hours. The cooled reaction mixture was diluted with water (20 mL) and ethyl acetate (50 mL). The organic layer was separated, dried over sodium sulfate, filtered, concentrated in vacuo, and purified flash chromatography (silica, 40 g, ISCO, 1-20% methanol in methylene chloride) to afford the title compound as an off-white solid, which was used in the next step without any further purification (300 mg, 56%).

297172-16-8, 297172-16-8 (4-Methylpiperidin-4-yl)methanol 22507737, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; F. HOFFMANN-LA ROCHE AG; DYKE, Hazel Joan; GAZZARD, Lewis J.; WILLIAMS, Karen; WO2011/73263; (2011); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

71985-80-3, 1-Methylpiperidine-4-carboxylic acid hydrochloride is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

71985-80-3, 1-Methylpiperidine-4-carboxylic acid hydrochloride salt 10 g (55.7 mmol) was added to thionyl chloride (25 ml) and stirred at room temperature until the solid dissolved completely. The reaction mixture was stirred for another 20 minutes and concentrated. The product was used for the next step without further purification. 1-Methylpiperidine-4-carboxylic acid hydrochloride salt 10 g (55.7 mmol) was added to thionyl chloride (25 ml) and resulting mixture stirred at room temperature until the solid dissolved completely. The reaction mixture was stirred for another 20 minutes and concentrated. The product was used for the next step without further purification.; EXAMPLE 5 Synthesis of N-benzhydryl-4-((4-chlorophenyl)(1-methylpiperidin-4-yl)methyl)piperazine-1-carboxamide A. Synthesis of 1-Methylpiperidine-4-carboxylic acid chloride 1-Methylpiperidine-4-carboxylic acid hydrochloride salt 10 g (55.7 mmol) was added to thionyl chloride (25 ml) and resulting mixture stirred at room temperature until the solid dissolved completely. The reaction mixture was stirred for another 20 minutes and concentrated. The product was used for the next step without further purification.

71985-80-3 1-Methylpiperidine-4-carboxylic acid hydrochloride 2760043, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; NeuroMed Technologies Inc.; US2006/63775; (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.85908-96-9,N-Boc-2-Piperidone,as a common compound, the synthetic route is as follows.,85908-96-9

Lithium bis(trimethylsilyl)amide (11.1 mL of a 1 M solution in THF, 11.1 mmol) was slowly added at 78 C underan argon atmosphere to a solution of lactam 1b (1.0 g, 5.05 mmol) in anhydrous THF (100 mL), and thesolution was stirred for 1 h. Then, ethyl chloroformate (532 l, 5.56 mmol) and, after 1 h of continuousstirring at 78 C, a solution of PhSeCl (1.48 g, 7.58 mmol) in anhydrous THF (10 mL) were addedto the solution. The mixture was stirred for a further 1 h and poured into saturated aqueous NH4Cl.The resulting mixture was extracted with EtOAc, and the combined organic extracts were dried,filtered, and concentrated under reduced pressure. Flash chromatography (8:2 hexane-EtOAc) of theresulting oil gave the seleno derivative 7 (1.79 g, 83% yield) as a yellow foam: IR (ATR Pike) (cm1):1718 (CO); 1H-NMR (300 MHz, CDCl3): d = 1.27 (t, J = 7.2 Hz, 3H, CH2CH3), 1.54 [s, 9H, (CH3)3C], 1.73(m, 1H, H-5), 1.84 (m, 1H, H-5), 2.01 (ddd, J = 13.8, 10.2, 5.7 Hz, 1H, H-4), 2.28 (dt, J = 13.8, 6.0 Hz, 1H,H-4), 3.52 (m, 1H, H-6), 3.61 (ddd, J = 13.2, 8.4, 5.4 Hz, 1H, H-6), 4.22 (qd, J = 7.2, 3.3 Hz, 2H, CH2CH3),7.31 (t, J = 7.2, 2H, HAR), 7.41 (t, J = 7.2 Hz, 1H, HAR), 7.65 (t, J = 7.2 Hz, 2H, HAR); HRMS (ESI) calcdfor [C19H25NO5Se + Na+]: 450.0787, found: 450.0788.

85908-96-9 N-Boc-2-Piperidone 7577838, apiperidines compound, is more and more widely used in various fields.

Reference：
Article; Arioli, Federica; Perez, Maria; Are, Celeste; Molins, Elies; Bosch, Joan; Amat, Mercedes; Molecules; vol. 24; 3; (2019);,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

2905-56-8, 1-Benzylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Oxidation of various tertiary amines using catalyst B was carried out following the procedure as in example 2 and the results are given in Table 2., 2905-56-8

2905-56-8 1-Benzylpiperidine 76190, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Council of Scientific and Industrial Research; EP1348692; (2003); 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.495414-81-8,1-tert-Butyl 4-ethyl 4-(cyanomethyl)piperidine-1,4-dicarboxylate,as a common compound, the synthetic route is as follows.,495414-81-8

B) tert-butyl 1-oxo-2,8-diazaspiro[4.5]decane-8-carboxylate To a mixture of 1-tert-butyl 4-ethyl 4-(cyanomethyl)piperidine-1,4-dicarboxylate (2.5 g), cobalt(II) chloride hexahydrate (1.0 g) and methanol (50 mL) was added sodium borohydride (1.6 g) under ice-cooling, and the mixture was stirred under ice-cooling for 2 hr, and then at room temperature for 2 days, and then 60C for 1 hr. 28% Aqueous ammonia was added thereto, the precipitate was removed by filtration, and the filtrate was extract with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate) to give the title compound (1.1 g). 1H NMR (300 MHz, DMSO-d6) delta 1.25-1.35 (2H, m), 1.40 (9H, s), 1.45-1.58 (2H, m), 1.90-1.98 (2H, m), 2.90 (2H, brs), 3.16 (2H, t, J = 7.2 Hz), 3.76-3.86 (2H, m), 7.56 (1H, brs).

The synthetic route of 495414-81-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Takeda Pharmaceutical Company Limited; KOIKE, Tatsuki; KAJITA, Yuichi; YOSHIKAWA, Masato; IKEDA, Shuhei; KIMURA, Eiji; HASUI, Tomoaki; NISHI, Toshiya; FUKUDA, Hiromi; EP2933247; (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.10315-06-7,Methyl 1-benzylpiperidine-4-carboxylate,as a common compound, the synthetic route is as follows.

Dried to 30L jacketed reactor was slowly purged with nitrogen, the 1.87kg1-benzyl-4-piperidine carboxylic acid methyl ester (8mol) and 2.0kg of toluene into a reactor, with stirring, cooled to an internal temperature of -5 . The resulting red aluminum – morpholine complex (approximately 8.8mol) was dropped to control the reaction temperature at 0 , 1 mixture liquid is completed, 0 reaction was continued for 30min. Was added slowly prepared 4N sodium hydroxide solution (containing 1.1kgNaOH), control the internal temperature not higher than 20 , the addition was completed, stirring was stopped, the organic layer was washed with water (11.0kg / times, 4 times), organic layer was concentrated under reduced pressure at 75 deg.] C and concentrated until no solvent was distilled off to give 1-benzyl-4-piperidine carbaldehyde 1.57kg, as a pale yellow oily liquid. Yield: 96.5%. HPLC: 99.03%

10315-06-7, The synthetic route of 10315-06-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Shanghai Goldentree Resin Powder Co., Ltd.; Zhu, Ben; (8 pag.)CN105693596; (2016); A;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem