Tag: M.W:100-200

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: A mixture of 3-methyl-2-benzothiazolinone hydrazone 1(1.79 g, 0.01 mol) and the appropriate aldehyde 2a-h(0.01 mol) was refluxed in absolute ethanol (20 mL) for 4-6 h in the presence of a few drops of piperidine. After cooling the reaction mixture to room temperature, the formed solid was collected and recrystallized from ethanol to give the new Schiff base derivatives 3a-h., 10338-57-5

As the paragraph descriping shows that 10338-57-5 is playing an increasingly important role.

Reference：
Article; Ibrahim, Nabila M.; Yosef, Hisham A.A.; Ewies, Ewies F.; Mahran, Mohamed R.H.; Ali, Mamdouh M.; Mahmoud, Abeer E.; Journal of the Brazilian Chemical Society; vol. 26; 6; (2015); p. 1086 – 1097;,
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

Step 1 Sodium triacetoxyhydroborate (1.1 g, 5.3 mmol) was added to a solution of 1-benzyl-4-piperidone (1.0 g, 5.3 mmol) and aniline (0.5 g, 5.3 mmol) in a mixture of chloroform/ethyl acetate (10 mL/5 mL) by portions, and the mixture was stirred at room temperature for 40 minutes. To the reaction mixture was added an aqueous saturated sodium bicarbonate solution (50 ml), the mixture was extracted with ethyl acetate (3×50 ml), the organic layer was dried over anhydrous magnesium sulfate, and the solvent was distilled off. The residue was purified by silica gel column chromatography (solvent: hexane-ethyl acetate) to obtain (1-benzyl-4-piperidinyl)phenylamine (0.9 g, 64%). 1H-NMR (CDCl3) delta: 1.49 (2H, m), 2.04 (2H, m), 2.17 (2H, dt, J = 2.3 Hz, 10.8 Hz), 2.86 (2H, br d, J = 12.0 Hz), 3.30 (1H, m), 3.54 (2H, s), 6.50-7.35 (10H, m)., 3612-20-2

3612-20-2 1-Benzylpiperidin-4-one 19220, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Takeda Pharmaceutical Company Limited; EP1559428; (2005); 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.1075-89-4,8-Azaspiro[4.5]decane-7,9-dione,as a common compound, the synthetic route is as follows.

General procedure: To the solution of an imide of general structure B in dry toluene anhydrous K2CO3 (2.5 equiv), 18-crown-6 (1 mol %) and 1,4-dibromobutane (4 equiv) were added. The reaction mixture was stirred under reflux for 24 h under inert gas. Then, the reaction mixture was filtered off and the filter cake washed with dichloromethane. The combined filtrates were evaporated under reduced pressure and crude product was distilled under reduced pressure., 1075-89-4

1075-89-4 8-Azaspiro[4.5]decane-7,9-dione 136843, apiperidines compound, is more and more widely used in various fields.

Reference：
Article; Jaro?czyk, Ma?gorzata; Wo?osewicz, Karol; Gabrielsen, Mari; Nowak, Gabriel; Kufareva, Irina; Mazurek, Aleksander P.; Ravna, Aina W.; Abagyan, Ruben; Bojarski, Andrzej J.; Sylte, Ingebrigt; Chilmonczyk, Zdzis?aw; European Journal of Medicinal Chemistry; vol. 49; (2012); p. 200 – 210;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.138377-80-7,3-Aminopiperidin-2-one hydrochloride,as a common compound, the synthetic route is as follows.

Reference Example 1 : 3-(4,-MethylbenzenesuIfonylamino)tetrahydropyridin-2- one:; 3-aminotetrahydropyridin-2-one hydrochloride (10 mmol), K2C03 (30 mmol) and 4- methylbenzenesulfonyl chloride (10 mmol) were reacted according to the above procedure to give the product (1.64 g, 69percent):Vmax/cm”1 3224, 1658 (secondary CONH, lactam), 1598, 1494 (aromatic ring), 1324, 1161 (S02-N), 814, 802 (pam-disubstituted benzene). NMR: deltaEta (400MHz, CDC13) 7.77 (2H, d, J 8.5, ortho-U), 7.29 (2H, d, J 8.0, meta- H), 5.79 (1H, br d, J 1.0, C7H7-S02NH), 5.56 (1Eta, br s, CONH-CH2), 3.49-3.42 (1H, m, CH-CO), 3.31-3.24 (2H, m, CH2NH), 2.53-2.45 (1H, m, lactam CH2), 2.40 (3H, s, CH3), 1.97-1.88 (1H, m, lactam CH2), 1.88-1.68 (2H, m, lactam CH2). 13C NMR: 6C (100MHz, CDC13) 172.2 (lactam C=0), 142.2 (ipso-C), 136.2 (para-C), 129.7 (aromatic CH), 127.3 (aromatic CH), 53.3 (CH-CO), 42.0 (C3/4-NH), 29.6 (lactam CH2), 28.6 (lactam CH2), 27.9 (lactam CH2), 21.5 (CH3).HRMS (+ESI) C,2H16N203S + Na+: calcd 291.0774; found 291.0777.

138377-80-7, The synthetic route of 138377-80-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; CAMBRIDGE ENTERPRISE LIMITED; FUNXIONAL THERAPEUTICS LIMITED; GRAINGER, David, John; FOX, David, John; WO2011/154695; (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.10338-57-5,4-(Piperidin-1-yl)benzaldehyde,as a common compound, the synthetic route is as follows.,10338-57-5

General procedure: To a stirred solution of aldehyde (10mmol) (4-(dimethylamino)benzaldehyde, 4-(1-piperidinyl)benzaldehyde, 4-(4-morpholinyl)benzaldehyde or 4-(diphenylamino)benz-aldehyde) in EtOH (75mL), ketone (20mmol) (2-acetylpyridine, 2-acetylthiazole or 2-acetylpyrazine) was added. Then KOH (1.54g, 27.5mmol) and NH3 (aq) (35mL) were added to the reaction mixture. The solution was stirred at room temperature for 24h. The solid was collected by filtration and washed with H2O. Recrystallization from ethanol (1, 4, 7, 10) or toluene (2, 3, 5, 6, 8, 9, 11, 12) afforded a crystalline solid.

As the paragraph descriping shows that 10338-57-5 is playing an increasingly important role.

Reference：
Article; Palion-Gazda, Joanna; Machura, Barbara; Klemens, Tomasz; Szlapa-Kula, Agata; Krompiec, Stanis?aw; Siwy, Mariola; Janeczek, Henryk; Schab-Balcerzak, Ewa; Grzelak, Justyna; Ma?kowski, Sebastian; Dyes and Pigments; vol. 166; (2019); p. 283 – 300;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.72752-52-4,2-Piperidinobenzonitrile,as a common compound, the synthetic route is as follows.

72752-52-4, A mixture of iBuMgBr (2 M in diethyl ether, 1.6 l, 3.2 mol) and toluene (1.6 1) was heated to a temperature of about 87C under nitrogen atmosphere. Then a solution of 2-piperidino-benzonitril (300 g, 1.6 mol) in toluene (1.6 1) was slowly added to the hot mixture within 1h, while maintaining the temperature. Thereafter, the reaction mixture was heated to reflux at a temperature of about 103-105C for 3h. After cooling the mixture to 0C, 1.6 1 of methanol were slowly added to this mixture. The resulting mixture was stirred for another hour at about 0-5C. Then NaBH4 (121 g, 3.2 mol) was added successively within 1h. Thereafter, the mixture was stirred for another hour at 15C and for another 2 hours at room temperature. Then 1.6 1 of THF was added and the mixture was stirred over night. The precipitated salts were filtrated and washed with THF (2 x 400 ml) and water (2 x 1.6 1) twice. The filtrate was dried and evaporated in vacuo to give 352 g of a crude yellow oil, which was then dissolved in 2-propanole (3.2 1). This solution was heated to a temperature of about 50C, at which 180 g of glutaric acid was slowly added. The product precipitated from this solution was stirred for 2h at room temperature and for 2h at 0-5C. After filtration and washing with cold 2-propanole (300 ml), the wet product was dried in a vacuum drier at 60C for 18h, to give 463 g (76%) of the desired product.

72752-52-4 2-Piperidinobenzonitrile 2774355, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Krka Tovarna Zdravil, D.D., Novo Mesto; EP2177221; (2010); 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.3612-20-2,1-Benzylpiperidin-4-one,as a common compound, the synthetic route is as follows.

To a mixture of N-benzylpiperidin-4-one 1 (0.01 mol, 1.89 g), aniline (0.01 mol), and activated zinc (0.04 mol), 90% aqueous acetic acid (0.16 mol) was added in portions. The mixture was stirred at room temperature for 24 h and at 70C on a water bath for an additional 12 h. After the reaction completion, the mixture was diluted with methanol and filtered. The filtrate was concentrated in a vacuum and then neutralized with a 30% ammonium hydroxide solution to pH 10. The crude product was collected by filtration and recrystallized with petroleum ether to obtain the pure product in 84% yield (2.2 g). IR (KBr), nu, cm-1: 3440 (N-H stretching), 3255, 3020, 2936, 2842,1615, 1526, 1490, 1372, 1318,1255, 1087, 977, 862, 751, 690. 1H NMR [400 MHz,CDCl3, delta (ppm)]: 1.50 (dq, 2H), 2.10 (br.d, 2H), 2.30(br.t, 2H), 2.60 (s, 2H), 2.90 (br.d, 2H), 3.35 (m, 1H),3.50 (br.s, 1H), 7.10-7.40 (m, Ar-H). Mass spectrum(m/z): 267 [M + 1]., 3612-20-2

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

Reference：
Article; Nami; Dabiri; Shirvani; Ahmadi Faghih; Javaheri; Radiochemistry; vol. 60; 1; (2018); p. 42 – 44; Radiokhimiya; vol. 60; 1; (2018); p. 42 – 44,4;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

20691-89-8, 1-Methyl-4-piperidinemethanol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

20691-89-8, To a solution of OXO-THIOPHEN-2-YL-ACETYL chloride (31. 5 mmol) at 0 to 5OC in chloroform (60 ml) is added a solution of (1-METHYL-PIPERIDIN-4-YL)-METHANOL (4.07 g, 31.5 mmol) in chloroform (60 ml), dropwise maintaining the temperature below 5C. The resulting mixture is stirred for 2 hours at room temperature. Washing with 10% potassium carbonate solution, water and then drying over magnesium sulphate, filtration and evaporation gives the title compound.

The synthetic route of 20691-89-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; NOVARTIS AG; NOVARTIS PHARMA GMBH; WO2005/815; (2005); A2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1075-89-4,8-Azaspiro[4.5]decane-7,9-dione,as a common compound, the synthetic route is as follows.

Example 2 8-[4-(Piperazinyl)butyl]-8-azaspiro[4.5]decane-7,9-dione (V) A mixture of 3,3-tetramethyleneglutarimide (50.2 g, 0.3 mole), 1,4-dibromobutane (130 g, 0.6 mole) and anhydrous K2 CO3 (06.7 g, 0.7 mole) in 500 mL toluene was heated at reflux for 20 hr, filtered and concentrated in vacuo. The residue was distilled (165-170 C./0.01 mM) to give 64.1 g of 8-[4-(1-bromo)butyl]-8-azaspiro[4.5]decane-7,9-dione which was combined with piperazine (90.4 g, 1.05 mole) and K2 CO3 (145.5 g, 1.05 mole) in 900 mL toluene and heated at reflux for 18 hr, filtered and concentrated in vacuo. The residue was distilled (180-200 C./0.01 mM) to yield 52.7 g (82%) of V., 1075-89-4

1075-89-4 8-Azaspiro[4.5]decane-7,9-dione 136843, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Mead Johnson & Company; US4581357; (1986); 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.85908-96-9,N-Boc-2-Piperidone,as a common compound, the synthetic route is as follows.

A solution of tert-butyl 2-oxopiperidine-1-carboxylate (5.4 g, 27 mmol) in THF (100 mL) was added LDA (16.2 mL, 32.4 mmol) at -78 C. After stirring for 0.5 h, phenyl selenisum chloride (7.94 g, 41.5 mmol) was added. The mixture was stirred at -78 C. for 4.5 hrs and then quenched with H2O (30 mL), diluted with brine (200 mL). The aqueous layer was extracted with CH2Cl2 (200 mL×2). The combined organic phase was dried, filtered and condensed. The residue was purified by flash chromatography (100% petroleum ether to petroleum ether/EtOAc=5:1) to give compound tert-butyl 2-oxo-3-(phenylselanyl)piperidine-1-carboxylate (4.27 g, 45%) as an orange solid., 85908-96-9

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

Reference：
Patent; Tolero Pharmaceuticals, Inc.; Xu, Yong; Brenning, Benjamin Gary; Kultgen, Steven G.; Liu, Xiaohui; Saunders, Michael; Ho, Koc-Kan; (119 pag.)US9416132; (2016); B2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem