Tag: M.W:200-300

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.885279-92-5,1-Boc-1,8-diaza-spiro[4.5]decane,as a common compound, the synthetic route is as follows.

885279-92-5, A flask was charged with l, l, l,3,3,3-hexafluoropropan-2-ol (2.00 g, 1 1.9 mmol, 1.50 equiv), DCM (20 mL), and triphosgene (1.18 g, 3.97 mmol, 0.50 equiv). N,N- diisopropylethylamine (2.55 g, 19.7 mmol, 2.50 equiv) was added dropwise at 0 C, and the solution was stirred for 3 h at room temperature prior to the addition of tert-butyl 1,8- diazaspiro[4.5]decane-l-carboxylate (1.90 g, 7.91 mmol, 1.00 equiv). The reaction mixture was stirred overnight at room temperature and quenched with water (20 mL). The mixture was extracted with DCM (3 x 20 mL) and the organic layers were combined, washed with water (3 x 10 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was chromatographed on a silica gel column to provide 1.58 g (46% yield) of 1- (tert-butyl) 8-(l, l, l,3,3,3-hexafluoropropan-2-yl) l,8-diazaspiro[4.5]decane-l,8-dicarboxylate. LCMS (ESI, m/z): 435 [M+H]+.

The synthetic route of 885279-92-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; ABIDE THERAPEUTICS, INC.; GRICE, Cheryl A.; WEBER, Olivia D.; BUZARD, Daniel J.; SHAGHAFI, Michael B.; JONES, Todd K.; (275 pag.)WO2019/46318; (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.23499-01-6,1-(4-Nitrophenyl)piperidin-4-one,as a common compound, the synthetic route is as follows.

EXAMPLE 38 3.0 g (13.6 mmol) of 1-(4-nitrophenyl)-4-piperidone and 2.0 g (13.6 mmol) of N-(4-methoxybenzyl)-N-methylamine were reacted in a similar manner to Example 1. 3.5 g of 4-(N-(4-methoxybenzyl)-N-methylamino)-1-(4-nitrophenyl)piperidine were obtained. Melting point 144-145 C.

23499-01-6, The synthetic route of 23499-01-6 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; BASF Aktiengesellschaft; US5260318; (1993); A;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

19099-93-5, 1-Cbz-Piperidin-4-one is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

At 0C, to a solution of benzyl 4-oxopiperidine-1-carboxylate (2.00 g, 8.57 mmol, 1.00 equivalent) in tetrahydrofuran(25 mL) were added sodium hydride (719.88 mg, 18.00 mmol, 2.10 equivalents) and potassium iodide (3.80g, 26.74 mmol, 3.12 equivalents) in one portion. The mixture was stirred at 30C for 16 hours. LC/MS showed completionof the reaction. The reaction mixture was added a solution of ammonium chloride (50 mL) thereto and then subjectedto extraction using ethyl acetate (50 mL32). The organic phase was concentrated and dried. The obtained residue waspurified by preparative TLC plate (petroleum ether: ethyl acetate = 6: 1) to give the title compound (870.00 mg, 3.33mmol, 38.86% yield) as a transparent oil. 1H NMR (400 MHz, Methanol-d4) delta 7.38-7.33 (m, 5H), 5.19 (s, 2H), 3.81-3.77(t, J = 6.4 Hz, 2H), 3.50-3.46 (m, 2H), 2.50 (s, 2H), 1.11-1.04 (m, 6H). LC/MS (ESI) m/z: 284.1 (M+1).

19099-93-5, The synthetic route of 19099-93-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Chai Tai Tianqing Pharmaceutical Group Co., Ltd.; Medshine Discovery Inc.; DING, Charles Z.; CHEN, Shuhui; ZHAO, Baoping; XU, Zhaobing; LIU, Yingchun; LIN, Ruibin; WANG, Fei; LI, Jian; (101 pag.)EP3269715; (2018); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

23499-01-6, 1-(4-Nitrophenyl)piperidin-4-one is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 40 2.4 g (10.9 mmol) of 1-(4-nitrophenyl)-4-piperidone and 2.0 g (10.9 mmol) of N-methyl-N-(2-(4-nitrophenyl)ethyl)amine were reacted in a similar manner to Example 1. 2.2 g of 1-(4-nitrophenyl)-4-(N-methyl-N-(2-(4-nitrophenyl)ethyl)amino)piperidine were obtained. Melting point 97-98 C., 23499-01-6

23499-01-6 1-(4-Nitrophenyl)piperidin-4-one 3842562, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; BASF Aktiengesellschaft; US5260318; (1993); A;,
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

Acetic acid (20 mL) and hydrazine hydrate (136 mL (140 g, 2.8 mol) were added to a solution of (3RS)- ethyl l-(phenylmethyl)-3-piperidinecarboxylate (Description 72, 270 g, 1.092 mol) in ethanol (310 mL) and the mixture was heated under reflux for 3 days. The mixture was cooled and the solvent was partly evaporated under reduced pressure until a precipitation occurred. The solid was collected, aqueous KOH (50 g in 100 mL) was added and the mixture was extracted with CHCl3 (2 x 300 mL). The combined organic fractions were dried (Na2SO4) the solvent was partly evaporated under reduced pressure until a precipitation occurred. The solid was collected, the filtrate was diluted with Et2O (200 mL) and further solid was collected. The combined solids were washed with Et2O and dried in vacuo to give the title compound as a solid (217 g, 92%).

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; Merck Sharp & Dohme Limited; DIRAT, Olivier; ELLIOTT, Jason, Matthew; WO2007/3965; (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.62718-31-4,1-Benzylpiperidine-4-carbonitrile,as a common compound, the synthetic route is as follows.

Step a: To solution of LHMDS (1 M in THF, 16.45 mL, 16.45 mmol) was added a solution of 1-benzylpiperidine-4-carbonitrile (1.50 g, 7.49 mmol) in THF (37.4 mL) at – 78 C. The resulting yellow solution was stirred for 1 h at -78 C. 1-Iodo-2-methylpropane (5.60mL, 48.7 mmol) was added and the reaction mixture was allowed to warm up to RT and stirring was continued for 3 days. Saturated aq. NH4C1 (-30 mL) was added at 0 C and the mixture was extracted with EtOAc. The organic phase was washed with water (50 mL) and brine (50 mL). Each aq. layer was extracted with EtOAc and the combined organic phases were dried over Na2SO4, filtered, and concentrated under reduced pressure to give crude 1 -benzyl-4- isobutylpiperidine-4-carbonitrile (2.54 g) as a yellow oil, which was directly used without further purification. MS m/z 257.3 (M+H)., 62718-31-4

The synthetic route of 62718-31-4 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; NOVARTIS AG; CHEN, Zhuoliang; FORTANET, Jorge Farcia; LAMARCHE, Matthew J.; SENDZIK, Martin; TAMEZ, JR., Victoriano; YU, Bing; (237 pag.)WO2016/203405; (2016); 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.72551-53-2,Ethyl 1-benzylpiperidine-3-carboxylate,as a common compound, the synthetic route is as follows.,72551-53-2

Step 1: l-Benzylpiperidine-3-carbonyl chloride hydrochloride; [00273] Hydrochloric acid (20 % aq, 100 mL) was added to ethyl l-benzylpiperidine-3- carboxylate (14.2 g, 57.4 mmol) and the mixture heated at reflux for 4 h. The reaction was cooled and concentrated in vacuo to give l-benzylpiperidine-3-carboxylic acid as a pale yellow solid. This solid was dissolved in thionyl chloride and the resulting solution stirred at room temperature for 1 h. Thionyl chloride was removed in vacuo and the resulting solid was slurried in THF and azeotroped to afford the title compound as a pale yellow solid which was used without further purification (17.0 g, quant.).

As the paragraph descriping shows that 72551-53-2 is playing an increasingly important role.

Reference：
Patent; GALAPAGOS N.V.; WO2008/55959; (2008); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

61995-20-8,61995-20-8, Benzyl 3-oxopiperidine-1-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

100 g (1.0 eq.) of XlV-Cbz and 56.66 g (1.0 eq.) Boc-NHNH2 was dissolved in 500 mL solvent (methanol, 5.0 V), Na2S04 was added and the mixture was stirred for 4h at 28C. The solvent was evaporated by reduce pressure to get 148g of XV-Cbz as a 0 yellow oil. MS (ESI):m/z =370 (M+23(Na))

As the paragraph descriping shows that 61995-20-8 is playing an increasingly important role.

Reference：
Patent; JANSSEN PHARMACEUTICA NV; PYE, Philip; BEN HAIM, Cyril; CONZA, Matteo; HOUPIS, Ioannis Nicolaos; WO2014/139970; (2014); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

78190-11-1, 1-[(Benzyloxy)carbonyl]-3-piperidinecarboxylic acid is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

78190-11-1, Reference Example 25 A mixture of 1-[(benzyloxy)carbonyl]-3-piperidinecarboxylic acid (20.0 g), iodoethane (14.2 g), potassium carbonate (15.7 g), and N,N-dimethylformamide (150 mL) was stirred at room temperature for 5 hours. The reaction solution was poured into water and extracted with ethyl acetate. The extracts were washed with water, dried and concentrated. The obtained residue was purified by silica gel column chromatography to obtain ethyl 1-[(benzyloxy)carbonyl]-3-piperidinecarboxylate (20.0 g). 1H-NMR (300 MHz, CDCl3) delta: 1.24 (3H, t, J=7.5 Hz), 1.45-1.74 (3H, m), 2.02-2.08 (1H, m), 2.42-2.48 (1H, m), 2.85-3.13 (2H, m), 3.95-4.02 (1H, m), 4.12 (2H, q, J=7.5 Hz), 4.18-4.30 (1H, m), 5.12 (2H, s), 7.27-7.36 (5H, m).

78190-11-1 1-[(Benzyloxy)carbonyl]-3-piperidinecarboxylic acid 234339, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Takeda Pharmaceutical Company Limited; EP1553074; (2005); 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

Production Example 40; In an ice-bath, to DIPA (4.1 mL) was added dropwise a 1 M solution of n-butyl lithium in hexane (10.1 mL). The reaction mixture was diluted with diethyl ether (10 mL), followed by stirring for 20 minutes. Next, the reaction mixture was stirred at -78C, and a solution of ethyl 1-benzyl piperidine-3-carboxylate (6.0 g) in diethyl ether (20 mL) was added dropwise thereto, followed by stirring at -50C for 15 minutes. Next, after addition of 1,3-dibromopropane (2.8 mL) at 70C, it was slowly returned to room temperature. Next, it was heated under reflux for 30 minutes. The reaction mixture was cooled, diluted with water, and extracted with diethyl ether. The organic layer was dried over MgSO4 and then concentrated under reduced pressure. The residue was purified by medium-pressure preparative liquid chromatography (silica gel, YAMAZEN YFLC WPrep2XY, hexane: EtOAc) to obtain ethyl 1-benzyl-(3-bromopropyl)piperidine-3-carboxylate (1.08 g) as a colorless oily substance., 72551-53-2

The synthetic route of 72551-53-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Astellas Pharma Inc.; EP2119716; (2009); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem