Month: March 2022

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, General procedure: Each ethyl N-substituted nipecotate derivative/ethyl N-substitutedisonipecotate derivative (1 mol) in 30 mL ethanol and hydraziniumhydroxide (10 mol) were heated under microwave irradiation (130 C,300 W) or refluxed for 24-48 h in an oil bath. After completion of thereaction (TLC), ethanol was evaporated and the residue was extractedwith dichloromethane or diethyl ether. The solvent was evaporatedunder reduced pressure until an oily residue occured. Then n-hexanewas added to the residue to give the title compound as a white solid.The precipitated crystals were separated by filtration.

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

Reference：
Article; Parlar, Sulunay; Sayar, Gozde; Tarikogullari, Ayse Hande; Karadagli, Sumru Sozer; Alptuzun, Vildan; Erciyas, Ercin; Holzgrabe, Ulrike; Bioorganic Chemistry; vol. 87; (2019); p. 888 – 900;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.35856-62-3,Piperidine-1-sulfonyl chloride,as a common compound, the synthetic route is as follows.,35856-62-3

1-Methyl-4-(4-nitrophenoxy)piperidine (1.4793 g, 6.26 mmol) was dissolved in 60 mL of EtOH, then Pd/C (209 mg) was added and the mixture was stirred under H2 atmosphere at ambient pressure overnight. The catalyst was filtered off to afford 4-[(1-methylpiperidin-4- yl)oxy]aniline (1.2567 g, 97% yield) as a brown solid, which was used in the next step without further purification.

The synthetic route of 35856-62-3 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; PHARMACYCLICS LLC.; ATALLAH, Gordana, Babic; CHEN, Wei; JIA, Zhaozhong, J.; POZZAN, Alfonso; RAVEGLIA, Lucal, Francesco; ZANALETTI, Riccardo; (815 pag.)WO2016/196776; (2016); A2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

21168-72-9, 2-(4-(Aminomethyl)piperidin-1-yl)ethanol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To the solution of compound 2-(4-(aminomethyl)piperidin-1-yl)ethanol (150 mg, 0.95 mmol) and compound 6-chloro-3-(3-(trifluoromethoxy)phenyl)imidazo[1,2-b]pyridazine (200 mg, 0.64 mmol) in 3 mL DMSO was added DIEA (0.3 mL, 1.37 mmol) and 10 mg CsF, the solvent was stirred for 5 h at 120 C., Then the mixture was purified by HPLC to afford the compound 2-(4-(((3-(3-(trifluoromethoxy)phenyl)imidazo[1,2-b]pyridazin-6-yl)amino)methyl)cyclohexyl)ethanol (34 mg, 8.2%) as a brown solid. (0522) 1H-NMR (CDCl3/400 MHz): delta 8.61 (s, 1H), 8.20-8.25 (m, 1H), 7.95-8.05 (m, 2H), 7.66 (t, J=4.4 Hz, 1H), 7.21-7.28 (m, 1H), 3.80-3.90 (m, 2H), 3.62-3.75 (m, 2H), 3.37 (d, J=6.4 Hz, 2H), 3.21 (t, J=5.2 Hz, 2H), 2.91-3.09 (m, 2H), 2.10 (d, J=14.0 Hz, 2H), 1.51-1.69 (m, 2H). MS (ES+, m/z): (M+H)+: 435.5.

21168-72-9, 21168-72-9 2-(4-(Aminomethyl)piperidin-1-yl)ethanol 7330476, 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

140645-24-5, (S)-3-(Aminomethyl)-1-N-Boc-piperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

(1.1.1 ) (S)-tert-butyl 3-((2-chloro-5-iodopyrimidin-4-ylamino)methyl)piperidine-1- carboxylate. To a stirred solution of 2,4-dichloro-5-iodopyrimidine (3.5 g, 12.73 mmol) in THF (50 ml.) at -700C was added dropwise a solution of (SS^aminomethyl-i-piperidinecarboxylic acid- 5 (1 ,1-dimethyl)ethyl ester (3.0 g, 14 mmol) and DIEA (2.88 mL, 16.55 mmol) in THF (50 ml_). The reaction mixture was allowed to warm up to room temperature overnight. Then, the reaction mixture was diluted with EtOAc and washed with saturated NH4CI solution (2x) and brine (1x). The organic layer was dried (Na2SO4), filtered and concentrated in vacuo. The crude product was purified by column chromatography (SiO2, heptane/EtOAc; 10 100% heptane to 30% EtOAc as mobile phase) and the title compound was obtained as a white solid in 38% yield (2.19 g, 4.84 mmol). LC-MS: peak at 4.04 min., mass [M+H] = 453., 140645-24-5

As the paragraph descriping shows that 140645-24-5 is playing an increasingly important role.

Reference：
Patent; N.V. ORGANON; PHARMACOPEIA, LLC; WO2009/124965; (2009); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

85908-96-9, N-Boc-2-Piperidone is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

85908-96-9, Example 27 – Preparation of Intermediate 6 The synthesis of Intermediate 6 followed the procedure of General Procedure 9 following: Intermediate 6 To a cooled solution (-78OC) of diisopropylamine (8.74 g, 86.4 mmol, 1.6 eq) in THF (200 mL) was added n-BuLi (34.5 mL, 86.4 mmol, 1.6 eq), and the mixture stirred for 1 hour at 0OC. The mixture was cooled to -78OC and to it was added tert-butyl 2- oxopiperidine-1-carboxylate (10.0 g, 54.0 mmol, 1.0 eq). The mixture was stirred for 1 hour and methyl chloroformate (6.12 g, 64.8 mmol, 1.2 eq) was added. The reaction mixture was allowed to warm to room temperature overnight, and was monitored by TLC and LC-MS. After completion, the reaction mixture was quenched with ammonium chloride and evaporated under reduced pressure. The residue was extracted with ethyl acetate (2 x 150 mL), and the combined organic phases were washed with water, brine, dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure. The residue was purified by flash chromatography using silica gel (60-120 mesh) eluting with 40% ethyl acetate in n- hexane to yield 1-(tert-butyl)-3-methyl-2-oxopiperidine-1,3-dicarboxylate (Intermediate 6, 9.2 g, yield: 70%) m/z 202.13 [M-56]+; 1H NMR (400 MHz, DMSO) delta 3.70 (s, 1H), 3.62-3.50 (m, 3H), 2.10-1.89 (m, 2H), 1.88-1.72 (m, 2H), 1.42 (s, 9H) ppm.

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

Reference：
Patent; VERSEON CORPORATION; SHORT, Kevin Michael; ESTIARTE-MARTINEZ, Maria de los Angeles; KITA, David Ben; SHIAU, Timothy Philip; (340 pag.)WO2016/138532; (2016); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

35856-62-3, Piperidine-1-sulfonyl chloride is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

REFERENCE EXAMPLE 16 Into a solution of 2 g of 7-hydroxy-4-methyl-1-indanone in 10 ml of dichloroethane was added 2.27 g of 1-piperidine sulfonyl chloride. Then 10 g of anhydrous aluminum chloride was gradually added to the mixture and stirred, and the reaction mixture was refluxed by heating for 8 hours. The reaction mixture was extracted with 200 ml of chloroform, washed with water, then the chloroform was removed by evaporation under a reduced pressure. The residue was purified by means of a silica gel column chromatography (eluent: chloroform), and recrystallized from ethanol to obtain 1.24 g of 7-hydroxy-4-methyl-6-(1-piperidinesulfonyl)-1-indanone.

35856-62-3, As the paragraph descriping shows that 35856-62-3 is playing an increasingly important role.

Reference：
Patent; Otsuka Pharmaceutical Co., Ltd.; US4792628; (1988); A;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

710972-40-0, tert-Butyl 4-((2-methoxyethyl)amino)piperidine-1-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 2,6-dibromo-4-nitropyridine (4 g, 14.19 mmol) and 103A (9.17 g, 35.5 mmol) in 1,4 dioxane (40 mL) was refluxed in pressure tube at 130 C for 16 h. 1,4 dioxane was removed completely. Purification by flash chromatography gave 103B (viscous liquid, 3 g, 6.53 mmol, 46.0 % yield). LC-MS Anal.Calc?d for Ci8Eh7BrN4C>5 458.1, found [M+H] 459.2 Tr = 1.40 min (Method T)., 710972-40-0

The synthetic route of 710972-40-0 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; BRISTOL-MYERS SQUIBB COMPANY; BALOG, James Aaron; MARKWALDER, Jay A.; SHAN, Weifang; WILLIAMS, David K.; NARA, Susheel Jethanand; ROY, Saumya; THANGAVEL, Soodamani; CHERUKU, Srinivas; SISTLA, Ramesh Kumar; (230 pag.)WO2020/23355; (2020); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

1067915-34-7, Ethyl 1-benzyl-5,5-difluoro-4-oxopiperidine-3-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

[0156] A solution of ethyl 1-benzyl-5,5-difluoro-4-oxopiperidine-3-carboxylate (4.9 kg, 16.5 mol) in HCI (17.0 L, 3N) was heated to reflux for 14 hours. Saturated aqueous sodium bicarbonate was added slowly to adjust the pH to 8 and the precipitated product was isolated by filtration. The filter cake was washed with water and dried to give the title compound as a white solid (2.7 Kg, 70% overall yield over 4 steps). 1H NMR (400 MHz, d6- DMSO) 6 7.35-7.25 (m, 5H), 6.13 (s, 2H), 3.55 (s, 2H), 2.65-2.60 (m, 2H), 2.43 (brs, 2H), 1.71 brs, 2H).

1067915-34-7, The synthetic route of 1067915-34-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; RUGEN HOLDINGS (CAYMAN) LIMITED; SHAPIRO, Gideon; (157 pag.)WO2016/126869; (2016); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

664362-16-7, 1-Boc-3-Ethynylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

INTERMEDIATE 35 (METHOD V); 3-Ethynylpiperidine hydrochloride; To Intermediate 33 (1.50 g, 7.18 mmol) was added HCl (4iVm dioxane, 50 mL). The reaction mixture was stirred at r.t. for 16 h and concentrated in vacuo. Trituration with Et2O gave the title compound (0.91 g, 86%). deltaH (DMSOd6) 9.02 (2H, br. s), 3.38- 3.24 (IH, m), 3.21-3.08 (2H, m), 2.94-2.76 (3H, m), 2.00-1.87 (IH, m), 1.83-1.73 (IH, m), 1.73-1.60 (IH, m), 1.60-1.48 (IH, m).

664362-16-7, The synthetic route of 664362-16-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; UCB PHARMA S.A.; WO2007/141504; (2007); 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(morpholinoethoxy)benzaldehyde (1 mmol, 0.235 g)was added to a stirring mixture of ethyl cyanoacetate(1.5 mmol, 0.170 g), and the catalytic amount of MoO3NPs (0.004 g, 3 mol%) in EtOH/H2O (4:1). It was allowedto the mixture to stir at room temperature for the timeindicated in Table II. After compilation of the reaction (thereaction progress was controlled by TLC EtOAc/n-hexane(1:1) as eluent), the reaction mixture was filtered to separateprecipitate. Next, the precipitate was dissolved in boilingethanol and filtrated to separate catalyst. In the end,formed crystalline product was filtrated to obtain the crystallinepure product.

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

Reference：
Article; Pourshojaei, Yaghoub; Eskandari, Khalil; Elhami, Elaheh; Asadipour, Ali; Journal of Nanoscience and Nanotechnology; vol. 19; 9; (2019); p. 5965 – 5973;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem