Tag: M.W:200-300

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1104083-27-3,tert-Butyl 3-hydroxy-3-methylpiperidine-1-carboxylate,as a common compound, the synthetic route is as follows.

Into a 250-mL round-bottomed flask, was placed tert-butyl 3-hydroxy-3- methylpiperidine-l-carboxylate (3 g, 13.9 mmol, 1 eq.), DCM (60 mL), pyridine (2.2 g, 0.03 mmol, 2 eq.). This was followed by the addition of a solution of 4-nitrophenyl carbonochloridate (8.4 g, 0.04 mmol, 3 eq.) in DCM (30 mL) dropwise with stirring at 0 C. The resulting solution was stirred for 3 days at rt. The reaction was then quenched by the addition of water (50 mL). The resulting mixture was washed with H2O (1 x 50 mL). The mixture was dried over anhydrous sodium sulfate and concentrated. The residue was applied onto a silica gel column with ethyl acetate :petroleum ether (10:90). This resulted in 2.5 g (47.16%) of tert-butyl 3-methyl-3-[[(4-nitrophenoxy)carbonyl]oxy]piperidine-l-carboxylate as a colorless oil.

1104083-27-3, As the paragraph descriping shows that 1104083-27-3 is playing an increasingly important role.

Reference：
Patent; PRINCIPIA BIOPHARMA INC.; LOU, Yan; OWENS, Timothy Duncan; BRAMELD, Kenneth Albert; GOLDSTEIN, David Michael; (302 pag.)WO2019/99582; (2019); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

32188-75-3, 5-Nitro-2-(piperidin-1-yl)benzonitrile is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 2; 2-(1-piperidinyl)-5-(amino)benzonitrile; The 2-(1-piperidinyl)-5-(nitro)benzonitrile (25 g, 108 mmol) was solubilized in methanol (400 ml). A spatula tip of Pd/C was added to the mixture and the crude was stirred for 16 hours under hydrogen atmosphere. The mixture was filtered on Celite, concentrated and the expected product was isolated by recrystallization in an equimolar volume of dichloromethane and cyclohexane. Yield: 87%

32188-75-3, As the paragraph descriping shows that 32188-75-3 is playing an increasingly important role.

Reference：
Patent; GENFIT; US2006/79696; (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.62718-31-4,1-Benzylpiperidine-4-carbonitrile,as a common compound, the synthetic route is as follows.

To a suspension of LiAlH4 (4.84 g, 0.128 mol) in dry Et2O (40ml) under an argon atmosphere at 00C was dropwise added a solution of l-benzyl-4-cyano-piperidine (18.3 g, 91.5 mmol) in dry Et2O (80 ml) and the mixture was stirred at room temperature for 24 h. The reaction mixture was treated carefully with H2O (10 ml) , 10% aqueous NaOH (10 ml) and H2O (30 ml) to give a mineral precipitate. The precipitate was filtered through a pad of kieselguhr, washed with Et2O and the filtrate evaporated in vacuo to leave the product as an oil (21.4 g, 82.3%) . EPO 1H-NMR (200 MHz, CDCl3): delta 7.37-7.22 (m, 5 H), 6.42 (br s, 1 H), 5.84 (br s, 1 H), 3.51 (s, 2 H), 2.94 (d, 2 H), 2.16-1.67 (m, 7 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; BIO-MEDISINSK INNOVASJON AS; COCKBAIN, Julian; WO2007/7072; (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.236406-22-7,1-Boc-4-(Aminomethyl)-4-methylpiperidine,as a common compound, the synthetic route is as follows.

General procedure: General Procedure 2: To a stirred solution of 3-isopropylimidazopyridine carboxylic acid 11 (1.0 mmol) in DCM (6.0 mL) at r.t.,diisopropylethylamine (2.0 mmols) and Boc-protected amines 22 (1.05 mmols) were added. After 5 minutes, TBTU (500.0 mg, 1.05mmols) was added in portions over a period of 5 minutes. The reaction mixturewas stirred for 4 h before it was diluted with ice cold water and DCM. The twolayers were separated. The organic layer was washed with brine solution, driedover anhydrous Na2SO4 and the solvent was removed under reduced pressure. Thecrude compound was purified by silica gel column chromatography to obtaincompounds 23

236406-22-7, The synthetic route of 236406-22-7 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Nirogi, Ramakrishna; Mohammed, Abdul Rasheed; Shinde, Anil K.; Bogaraju, Narsimha; Gagginapalli, Shankar Reddy; Ravella, Srinivasa Rao; Kota, Laxman; Bhyrapuneni, Gopinadh; Muddana, Nageswara Rao; Benade, Vijay; Palacharla, Raghava Chowdary; Jayarajan, Pradeep; Subramanian, Ramkumar; Goyal, Vinod Kumar; European Journal of Medicinal Chemistry; vol. 103; (2015); p. 289 – 301;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.223632-64-2,1-(3-Chloro-4-fluorobenzoyl)piperidin-4-one,as a common compound, the synthetic route is as follows.

To a solution of 1-[(3-chloro-4-fluorophenyl) carbonyl] piperidin-4-one [Example 1, Step 2] (2 g, 7.8 mmol, 1.00 equiv) in dichloromethane (20 mL) was added sodium hydroxide (30.5% in H2O) (5.4 mL, 7.00 equiv), TBAC (108 mg, 0.38 mmol, 0.05 equiv) and 2-chloroacetonitrile (1.18 g, 15.6 mmol, 2.00 equiv) at 0 C. The reaction solution was stirred for 1 h at room temperature. The resulting solution was diluted with water (100 mL). The resulting solution was extracted with dichloromethane (3×100 mL). The organic layers were washed with brine (3×50 mL). The mixture was dried over anhydrous sodium sulfate and concentrated under vacuum to afford 1.1 g (48%) of 6-[(3-chloro-4-fluorophenyl)carbonyl]-1-oxa-6-azaspiro[2.5]octane-2-carbonitril as a brown solid. LC-MS: m/z=295[M+H]+., 223632-64-2

223632-64-2 1-(3-Chloro-4-fluorobenzoyl)piperidin-4-one 10611056, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Auspex Pharmaceuticals, Inc.; ZHANG, Chengzhi; (94 pag.)US2018/79742; (2018); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

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

885279-92-5, Resin from the previous step (0.1 mmol) was added to a scintillation vial along with 120 mg (0.5 mmol) of tert-Butyl 1,8-diazaspiro[4.5]decane-1-carboxylate, 85 mg (0.4 mmol) of K3PO4, 26 mg (0.05 mmol) Pd(P(t-Bu)3)2, and 2 ml of DMA. The vial was flushed with Argon and heated to 90 C. The reaction was allowed to proceed overnight at 90 C. The resin was washed with each of the following solvents three times each and dried in vacuo: DMF, H2O, MeOH, and DCM.

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; Berk, Scott C.; Close, Joshua; Hamblett, Christopher; Heidebrecht, Richard W.; Kattar, Solomon D.; Kliman, Laura T.; Mampreian, Dawn M.; Methot, Joey L.; Miller, Thomas; Sloman, David L.; Stanton, Matthew G.; Tempest, Paul; Zabierek, Anna A.; US2007/117824; (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.406233-26-9,4-(4,4-Dimethylpiperidin-1-yl)benzoic acid,as a common compound, the synthetic route is as follows.

3.1 Acylsulfonamide (SZ7TA2)[ 0363] Sodium boron hydride (60 mg, 1.5 mmol) was added slowly to the solution of (SZ7) (450 mg, 1 mmol) in Methanol. The system was stirred for 30 min and removed all the solvent. Intermediate 24 was obtained by flash chromatography and used for next step directly. The solution of 24, 25 (1 mmol), EDCI (2 mmol) and DMAP (0.2 mmol) in DCM was stirred for 12 hours at room temperature, and the system was extracted by ethyl acetate (20 mL x3). The combined organic phase was dried by anhydrous sodium sulfate and concentrated. And product (SZ7TA2) (102 mg, 16percent) was obtained by flash chromatography (hexane: EtOAc = 1 :1; Rf = 0.2 in hexane: EtOAc = 1 : 1). 1H-NMR (400 MHz, CDC13) delta: 8.74 (s, 1H), 8.43 (s, 1H), 8.24 (d, J = 8.8 Hz, 1H), 7.95-7.89 (m, 3H), 7.67 (d, J = 8.4 Hz, 2H), 7.14 (d, J = 6.4 Hz, 2H), 7.07 (d, J = 6.8 Hz, 2H), 6.72 (d, J = 8.8 Hz, 2H), 5.46 (d, J = 65.2 Hz, 1H), 3.26-3.25 (m, 4H), 3.13 (d, J = 6.0 Hz, 2H), 2.96 (d, J = 6.4 Hz, 2H), 1.40-1.39 (m, 4H), 0.93(s, 6H) ppm. 13C-NMR (100 MHz, CDC13) delta: 164.1, 154.4, 138.4, 137.9, 136.5, 133.6, 131.2, 130.9, 130.2, 130.0, 129.5, 129.4, 129.0, 126.9, 126.2, 125.4, 117.9, 113.0, 43.7, 41.7, 37.8, 33.9, 28.6, 27.7 ppm. HRMS (ESI+) for [M+H]+; calculated: 638.18116, found: 638.18097 (error m/z = -0.29 ppm).

406233-26-9, The synthetic route of 406233-26-9 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; UNIVERSITY OF SOUTH FLORIDA; MANETSCH, Roman; KULKARNI, Sameer Shamrao; IYAMU, Iredia David; WANG, Hong-Gang; DOI, Kenichiro; GUIDA, Wayne C.; SANTIAGO, Daniel N.; DUBOULAY, Courtney J.; WO2012/21486; (2012); A2;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

1180112-41-7, tert-Butyl 1,7-diazaspiro[3.5]nonane-7-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of intermediate 343 (100 mg, 240.2 muiotaetaomicron, 1 eq) in CH3CN (5 mL) were added tert-butyl 1, 7-diazaspiro[3.5]nonane-7-carboxylate (109 mg, 480.5 muiotaetaomicron, 2 eq) and K2C03 (199 mg, 1.44 mmol, 6 eq). The mixture was stirred at 70 C for 15h. The mixture was extracted with EtOAc and the organic layer was concentrated to dryness. The crude was purified by TLC (EtOAc), to give intermediate 344 (40 mg, 54.4 muiotaetaomicron, 22.6% yield)., 1180112-41-7

The synthetic route of 1180112-41-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; JANSSEN PHARMACEUTICA NV; BERTHELOT, Didier Jean-Claude; BREHMER, Dirk; BEKE, Lijs; BOECKX, An; DIELS, Gaston Stanislas Marcella; GILISSEN, Ronaldus Arnodus Hendrika Joseph; LAWSON, Edward Charles; PANDE, Vineet; PARADE, Marcus Cornelis Bernardus Catharina; SCHEPENS, Wim Bert Griet; SHOOK, Brian Christopher; THURING, Johannes Wilhelmus John F.; VIELLEVOYE, Marcel; SUN, Weimei; WU, Tongfei; MEERPOEL, Lieven; (244 pag.)WO2017/153186; (2017); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

236406-22-7, 1-Boc-4-(Aminomethyl)-4-methylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a homogeneous mixture of tert-butyl 4-(aminomethyl)-4-methylpiperidine- 1- carboxylate (53.0 mg, 0.23 mmol) in anhydrous DCM (2 mL), under nitrogenatmosphere, was added DIPEA (0.17 mL, 0.97 mmol) followed by 4-chlorobenzoyl chloride (0.05 mL, 0.390 mmol). The resulting mixture was stirred at ambient temperature for 4 hours, before being partitioned between DCM and water. The layers were separated and the aqueous layer was extracted twice more with DCM. These organic extracts were combined with the original organic layer and were concentrated invacuo to afford the title compound as an amber residue, which was used in the next step without purification. MS(ES): m/z = 367 [M+H]. tR = 1.00 mm (Method A)., 236406-22-7

The synthetic route of 236406-22-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; FLEXUS BIOSCIENCES, INC.; BECK, Hilary Plake; JAEN, Juan Carlos; OSIPOV, Maksim; POWERS, Jay Patrick; REILLY, Maureen Kay; SHUNATONA, Hunter Paul; WALKER, James Ross; ZIBINSKY, Mikhail; BALOG, James Aaron; WILLIAMS, David K.; MARKWALDER, Jay A.; SEITZ, Steven P.; CHERNEY, Emily Charlotte; ZHANG, Liping; SHAN, Weifang; GUO, Weiwei; HUANG, Audris; (231 pag.)WO2016/73774; (2016); 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.24666-55-5,Benzyl (2,6-dioxopiperidin-3-yl)carbamate,as a common compound, the synthetic route is as follows.

A solution of 15 (4.0Og, 0.015 mol) in methanol (200 ml) and 2N HCl (15 ml) was hydrogenated over 5% Pd-C (100 mg) at 60 psi for 4 h. The catalyst was filtered off and the filtrate concentrated to dryness to give the title compound 16 as a white solid (2.61 g, 100%), mp 245 0C (dec) (lit. 235 0C (dec)). 1H NMR (400 MHz, DMSO-D6) delta ppm 11.22 (br s? IH), 8.68 (br s, 3H), 4.20 (dd, J=13.0, 5.3 Hz, IH), 2.77-2.65 (m, IH), 2.64- 2.56 (m, IH), 2.27-2.19 (m, IH)5 2.09-1.97 (m, IH)., 24666-55-5

As the paragraph descriping shows that 24666-55-5 is playing an increasingly important role.

Reference：
Patent; AUCKLAND UNISERVICES LIMITED; WO2008/7979; (2008); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem