Tag: M.W:100-200

58333-75-8, 4-(2-Methoxyphenyl)piperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

58333-75-8, 4-(2-Methoxyphenyl)piperidine (200 mg, 1 mmol), the product from Example 1A (228 mg, 1 mmol) and N,N-diisopropylethylamine (0.185 mL, 1.1 mmol) in toluene (8 mL) were stirred at 60 C. for 18 hours. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (30 mL). The organic layer was washed with brine (230 mL), dried over MgSO4, filtered and the filtrate concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (elution with dichloromethane:methanol, 9.5:0.5) to provide the title compound 177 mg (52.3%). 1H NMR (300 MHz, DMSO-d6) ? 1.71 (m, 4H), 2.28 (m, 5H), 2.89 (m, 1H), 2.96 (m, 2H), 3.13 (s, 2H), 3.78 (s, 3H), 6.91 (m, 3H), 7.20 (m, 3H), 7.45 (m, 2H), 8.69 (s, 1H); MS (DCI/NH3) m/e 339 (M+H)+. Anal. calcd for C21H26N2O2: C, 74.52; H, 7.74; N, 8.28. Found: C, 74.23, H, 7.71, N, 8.26.

The synthetic route of 58333-75-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Stewart, Andrew O.; Kolasa, Teodozyj; US2003/232836; (2003); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

51304-64-4, 4-Hydrazinyl-1-methylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,51304-64-4

Example 6 Trans-6-[2-(4-methoxyphenyl)ethenyl]-2-(1-methyl-4-piperidinyl)phthalazin-1(2H)-one 1-Methyl-4-hydrazinopiperidine (41.2 gm) was dissolved in 1000 ml of ethanol. To this was added 90 gm trans-5-[2-(4-methoxyphenyl)ethenyl]-3-hydroxyphthalide (refer to U.S. patent 4,665,181). The resulting mixture was refluxed for 5 hours, then concentrated to dryness and the product taken up in 2000 ml of 2.5 normal HCl and extracted three times with 700 ml ethyl acetate. The product was basified, extracted into chloroform, and concentrated to dryness. The product was dissolved in isopropanol, acidified with HCl, heated to reflux, charcoaled and allowed to cool and crystallize. After three more crystallizations 3.7 gm of pure material was obtained melting at 297 to 298C.

51304-64-4 4-Hydrazinyl-1-methylpiperidine 10920535, apiperidines compound, is more and more widely used in various fields.

Reference£º
Patent; FISONS CORPORATION; EP309765; (1990); A3;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.24666-56-6,3-Aminopiperidine-2,6-dione hydrochloride,as a common compound, the synthetic route is as follows.

[00409j Step 3: A mechanically stirred mixture of 4-bromo-2-bromomethyl-benzoic acid methyl ester (121 g, 390 mmol) and 3-amino-piperidine-2,6-dione hydrochloride (64.2 g, 390 mmol) in DMF (400 mL) was treated dropwise with triethylamine (98.5 g, 980 mmol) over75 minutes. After the addition was completed, the reaction mixture was stirred at room temperature overnight. The mixture was quenched sequentially with acetic acid (50 mL), water (2500 mL) and a 1:1 mixture of ethyl acetate and hexanes (600 mL). After stirring the mixture for 20 minutes, the solid was filtered, washed with water, and air dried overnight. The solid was stirred in acetic acid (200 mL) and refluxed for 2 hours. The mixture was cooled to room temperature and filtered. The solid was washed with additional acetic acid, hexanes, and air dried overnight to give 25.4 g of 3 -(5-bromo- 1 -oxo- 1 ,3-dihydro-isoindol-2-yl)-piperidine-2,6- dione as a grey solid, in 20% yield; 1H NMR (DMSO-d6) oe 1.97-2.04 (m, 1H), 2.32-2.46 (m, 1H), 2.56-2.63 (m, 1H), 2.85-2.97 (m, 1H), 4.34 (d, J = 17.7 Hz, 1H), 4.47 (d, J = 17.7 Hz, 1H),5.11 (dd,J= 13.2Hz,J5.1 Hz, 1H),7.67(d,J8.1 Hz, 1H),7.72(dd,J=8.1 Hz,J= 1.5Hz, 1H), 7.89 (d, J = 0.9 Hz, 1H), 11.00 (s, 1H).

24666-56-6, As the paragraph descriping shows that 24666-56-6 is playing an increasingly important role.

Reference£º
Patent; CELGENE CORPORATION; LOPEZ-GIRONA, Antonia; CATHERS, Brian, E.; LU, Gang; JACKSON, Pilgrim; HANDA, Hiroshi; (184 pag.)WO2016/57503; (2016); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

106243-23-6, 4-(1H-imdazol-4-yl)piperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,106243-23-6

EXAMPLE 1 4-(1-CYCLOHEXYLAMINOTHIOCARBONYL-4-PIPERIDYL)-1H-IMIDAZOLE 1.4 g (0.0092 mole) of 4-(4-piperidyl)-1H-imidazole and 1.42 g (0.010 mole) of cyclohexyl isothiocyanate are brought to reflux for 2 hours in 100 cm3 of anhydrous toluene. Precipitate formed on cooling is drained, washed with anhydrous ethyl ether, dried and recrystallized in toluene. White powder, M.p. (d.) 170 C., w=2 g. 74% yield. IR spectrum (KBr): 3240 (NH). Principal bands: 2920, 2840, 1520, 1440, 1350, 1330, 1250, 1175, 1090, 970, 830, 755 and 695 cm-1. NMR spectrum: DMSO-d6 deltaH, imidazole: 7.45 and 6.66. coupling constant JH2-H5 =0.90 Hz. deltaNH: 7.13 and 7.05 ppm. deltaH piperidine and cyclohexyl: 4.61, 4.16, 2.98, 1.76 and 1.20 ppm.

As the paragraph descriping shows that 106243-23-6 is playing an increasingly important role.

Reference£º
Patent; Institut National de la Sante et de la Recherche Medicale (Inserm); Universite de Caen; Societe Civile Bioprojet; US4707487; (1987); 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.159635-49-1,tert-Butyl 4-methylenepiperidine-1-carboxylate,as a common compound, the synthetic route is as follows.

Tert-butyl 4-methylenepiperidine-1-carboxylate (1 g, 5.07 mmol) is dissolved in diethyl ether (20 mL), followed by adding zinc-copper couple (4.4 g, 34.5 mmol) under the protection of nitrogen at 10 ¡ãC, and dripping trichloro-acetic chloride (1.84 mL, 16.5 mmol) dissolved in the DME solution (5 mL), and the reaction mixture continues to react overnight at room temperature. Subsequently, the reaction mixture is slowly poured into -10 ¡ãC saturated salt solution (30 mL), filtered with siliceousearth, extracted with ethyl acetate (20 mL * 3), washed with saturated salt solution (30 mL * 2), dried, rotated to dryness and purified by column chromatography (eluent: petroleum ether : ethyl acetate = 15 : 1), so as to obtain 880 mg of a brown oily liquid, that is tert-butyl 1,1-dichloro-2-oxo-7-azaspiro[3.5]nonan-7-carboxylate with a yield of 56percent. The obtained product is directly used in the next step without purification.

159635-49-1, As the paragraph descriping shows that 159635-49-1 is playing an increasingly important role.

Reference£º
Patent; Guangzhou Henovcom Bioscience Co. Ltd.; ZHANG, Jiancun; ZOU, Qingan; CHEN, Yanwei; (64 pag.)EP3401315; (2018); 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.908245-03-4,Methyl 6-methylpiperidine-3-carboxylate,as a common compound, the synthetic route is as follows.

908245-03-4, This residue was dissolved in CH2C12 (30 mL) and chilled in an ice bath. To this stirred solution was added DMAP (0.194 g, 1.59 mmol), followed by TEA (6.64 mL, 47.7 mmol) portion wise. A suspension formed when TEA was added. This mixture was chilled to 15 C. To the resulting suspension was added benzyl chloroformate (2.72 mL, 19 mmol) dropwise over a 15 min period such that the temperature of the mixture was kept at 15- 20 C. After completion of benzyl chloroformate addition, the mixture was stirred chilled with an ice bath for another 30 min and then at ambient temperature for 1 h. This mixture was washed with 100 mL of cold IN HC1. The organic was concentrated in vacuo. The residue was partitioned between toluene (100 mL), MTBE (100 mL), and water (50 mL). The organic was washed with brine, dried over MgS04, filtered, and concentrated in vacuo to give an oil (2.5 g) as the crude (NMR showed ?^3: 1 cis/trans ratio of isomers). Isomer was separated by silica gel column chromatography using gradient elution of EtOAc in hexane and gave 840 mg cis isomer (112) and 450 mg trans isomer (113).

The synthetic route of 908245-03-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ADVINUS THERAPEUTICS LIMITED; BARAWKAR, Dinesh; BENDE, Tanushree; ZAHLER, Robert; BANDYOPADHYAY, Anish; SARANGTHEM, Robindro Singh; DOSHI, Jignesh; WAMAN, Yogesh; JADHAV, Rushikesh; SINGH, Umesh Prasad; WO2012/127506; (2012); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

5570-78-5, 1-Isopropylpiperidin-4-ol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a cold (0 C.) mixture of 5-hydroxy-1H-indole-2-carboxylic acid ethyl ester (10 g, 1.0 eq.), 1-isopropyl-piperidin-4-ol (intermediate 1, step 1, 7.32 g, 1.05 eq.) and triphenylphosphine (15.3 g, 1.2 eq.) in tetrahydrofuran (280 ml) was slowly added a solution of diisopropylazodicarboxylate (11.8 g, 1.2 eq.) in tetrahydrofuran (20 mL). The mixture was stirred 30 min at 0 C. and overnight at room temperature, was concentrated in vacuo, dissolved in methyltertiobutylether (310 mL), washed with sodium hydroxide aqueous solution (0.5N), brine, dried over Na2SO4, filtered and evaporated. The residue was purified on silica eluding with dichloromethane/methanol/ammoniac. One fraction was isolated and dried in vacuo, to yield 7.0 g (43%) of the desired product as white solid. MS (m/e): 331.5 (MH+, 100%), 5570-78-5

The synthetic route of 5570-78-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Nettekoven, Matthias; Plancher, Jean-Marc; Richter, Hans; Roche, Olivier; Rodriguez Sarmiento, Rosa Maria; Taylor, Sven; US2007/123526; (2007); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

106-52-5, 1-Methylpiperidin-4-ol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

4-Nitropyrazole (2 g, 17.69 mmol), triphenylphosphine (6.95 g, 26.54 mmol) and N-methyl-4-hydroxypiperidine (2.4 g, 21.23 mmol) were dissolved in anhydrous tetrahydrofuran (50 mL). The solution was cooled to 0 C. and diisopropylazodicarboxylate (5.4 g, 26.54 mmol) was slowly added dropwise. After the addition, the mixture was warmed to room temperature and stirred for 16 hours. The mixture was concentrated under reduced pressure and the residue was diluted with ethyl acetate (50 mL) and 3N aqueous hydrochloric acid solution (50 mL) was added. The aqueous phase was adjusted to pH=9 with saturated potassium carbonate solution and then extracted with ethyl acetate (50 mL*2). The combined organic phase was dried over anhydrous sodium sulfate, filtered and the filtrate was concentrated under reduced pressure to give 25-c as a yellow oil (2.1 g, yield: 57%).

106-52-5, As the paragraph descriping shows that 106-52-5 is playing an increasingly important role.

Reference£º
Patent; GUANGZHOU MAXINOVEL PHARMACEUTICALS CO., LTD.; XU, Zusheng; ZHANG, Nong; WANG, Tinghan; SUN, Qingrui; WANG, Yuguang; (90 pag.)US2018/208604; (2018); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

3970-68-1, 4-Methylpiperidin-4-ol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To 80 mg (0.22 mmol) E-10 in 2 mL dioxane and 1 mL DMF is added 28 mg (0.24 mmol) 4-methyl-piperdin-4-ol and 45 mu. (0.26 mmol) diisopropylethylamin and the reaction mixture is stirred for 1 h at 130C in a microwave oven. The reaction mixture is purified by RP chromatography (C 18, 5-70% acetonitrile in water containing 0.1% formic acid). Yield: 45 mg (46%). HPLC-MS: M+H = 445; tR = 0,91 min., 3970-68-1

The synthetic route of 3970-68-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; WUNBERG, Tobias; VEEN, Van Der, Lars; KRAEMER, Oliver; WO2012/101186; (2012); 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.

79099-07-3, To a solution of /ert-butyl 4-oxopiperidine-l-carboxylate (50 g, 251 mmol) in pyridine (500 mL) is added molecular sieves (50 g) and the mixture is stirred at room temperature for 10 minutes, followed by the addition of NH2OH HCl (30.25 g, 427 mmol). The resulting reaction is stirred at room temperature overnight, and the reaction mixture filtered through a pad of celite to remove the molecular sieves. The filtrate is diluted with water, the layers separated and the aqueous phase extracted with more ethyl acetate. The combined organic phases are washed with brine, dried over EPO MgSO4, filtered, and concentrated in vacuo to provide the title compound. This material is used in the next step without further purification.1H NMR (300 MHz, DMSO-ddelta): 1.52 (s, 9H), 2.36 (t, J=6.0 Hz, 2H), 2.58 (t, J=6.0 Hz, 2H), 3.50-3.58 (m, 4H).

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

Reference£º
Patent; PHARMACIA & UPJOHN COMPANY LLC; WO2006/56877; (2006); A2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem