Tag: M.W:100-200

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.297172-16-8,(4-Methylpiperidin-4-yl)methanol,as a common compound, the synthetic route is as follows.

4-methylpiperidin-4-yl)methanol (E4) (2.4 g, a mixture of the amino alcohol and NH4CO2H) was suspended in DCM (70 mL). Et3N (5 mL; 37.2 mmol) was then added followed by the drop-wise addition of ethyl chloroformate (1.05 mL, 13 mmol, 1.4 eq.). After 1 hr at room temperature, IN HCl (70 mL) was added and the layers were separated. The aqueous layer was extracted with DCM (70 mL) and the combined organic layers were dried over Na2SO4, filtered, and concentrated under high vacuum. The product obtained is an analytically pure oil (E5) and used without further purification. LC/MS m/z (M+l) 202.2, retention time 1.89 minutes; (10-99% CH3CN-H2O gradient with 0.03% TFA, 5 min). 1H NMR (400 MHz, DMSO-d6) delta 4.05 (q, J = 7.1 Hz5 2H), 3.66 {at, J= 13.6, 4.7 Hz, 2H), 3.32 (s, 2H), 3.11 (t, J = 5.2 Hz, IH), 3.11 (dd, J= 23.9, 3.5 Hz, IH), 1.44-1.37 (m, 3H), 1.26-1.22 (m, 2H), 1.19 (t, J = 7.1 Hz, 3H), 0.93 (s, 3H)., 297172-16-8

The synthetic route of 297172-16-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; VERTEX PHARMACEUTICALS INCORPORATED; WO2007/100670; (2007); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

14813-01-5, 1-Benzylpiperidin-3-ol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1-Benzyl-3-piperidinol (600 g), toluene (6 L), ethyl acetoacetate (490.2 g), boric acid (19.5 g) were added to a 10 L reaction flask. Heated to reflux overnight, HPLC detection, The remaining 2-6.2% of 3-benzyl-3-piperidinol was added to the atmospheric distillation apparatus to distill off the ethanol produced by the reaction. Complete the reaction in 2 hours, cool to 0~10 C, adjust the pH to about 3, and extract the product with water (1 L × 2). The aqueous phase was combined, and the pH of the aqueous phase was adjusted to about 7 and extracted with ethyl acetate (1L×2). Wash with saturated brine (500 mL×2), dry over anhydrous sodium Concentrated to dryness afforded 786.1 g of a yellow oil., 14813-01-5

As the paragraph descriping shows that 14813-01-5 is playing an increasingly important role.

Reference：
Patent; Tianjin Changyuan Pharmaceutical Technology Co., Ltd.; Chi Fangfei; Ying Zixiang; Liu Wenjuan; Mo Lan; (9 pag.)CN104529872; (2018); B;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

5773-58-0, 3-Methylpiperidin-4-one is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

5773-58-0, The mixture of compound A0056-1 (115 mg, 1.02 mmol), compound 1 (323 mg, 1.53 mmol) and H2O (0.3 mL) was stirred overnight (about 18 hours) at room temperature. Thin-layer chromatography was used to monitor the reactions progress. The reaction mixture was quenched by extraction with ethyl acetate, followed by a washing with water and brine. The quenched reaction mixture was dried with anhydrous sodium sulfate and concentrated under vacuum to afford 300 mg of crude product as yellow oil. The crude product was purified via column chromatography to obtain 20 mg of the title product as colorless oil (yield: 6%) . The structure was confirmed by 1H NMR and MS.

The synthetic route of 5773-58-0 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; PAIN THERAPEUTICS, INC.; WO2010/51374; (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.4629-78-1,3-Methylpiperidin-4-one hydrochloride,as a common compound, the synthetic route is as follows.,4629-78-1

Preparation of 1-[1-(4,4′-difluorodiphenylmethoxy)-propyl]-3-methylpiperidine-4-one Compound VI: {R1 and R2 =4-F, m=1, A=(CH2)n, n=3, R4, R5 and R6 =H, R3 =CH3 } The mixture of 1-[4,4′-difluorodiphenylmethoxy]-3-chloropropane (12 g, 0.04M), 3-methylpiperidine-4-one hydrochloride (6.05 g, 0.04M), potassium carbonate (14 g, 0.10M), sodium iodide (1 g, 0.006M) and acetonitrile (200 ml) is brought to reflux for 24 hours. After cooling and filtering, the solvent is evaporated and the residue is taken up in water and CH2 Cl2; the organic phase is dried, concentrated and chromatographed on Silica (eluent: AcOEt/Cyclohexane: 30/70). 10 g of oil are obtained. Yd.=66%. 1 H NMR: 1,1 (d,2H); 1.6-3.2 (m,11H); 3.50 (t,2H); 5.3 (s,1H); 6.80-7.45 (m,8H)

The synthetic route of 4629-78-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Cooperation Pharmaceutique Francaise; US5846980; (1998); 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.768-66-1,2,2,6,6-Tetramethylpiperidine,as a common compound, the synthetic route is as follows.,768-66-1

A dry and nitrogen-flushed Schlenk flask equipped with a magnetic stirring bar and rubber septum was charged with iPrMgCl·LiCl (1.0 M in THF, 20 mL 20 mmol). Then, 2,2,6,6-tetramethylpiperidine (3.52 mL, 21 mmol) was added dropwise through a syringe within 5 min. The mixture was stirred until the gas evolution ceased (24-48 h). Titration against benzoic acid in THF (0 C) in the presence of 4-(phenylazo)diphenylamine as the indicator showed that the base concentration ranged from 0.9 to 0.98 M.

The synthetic route of 768-66-1 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Bozzini, Leandro A.; Batista, Joao H.C.; de Mello, Murilo B.M.; Vessecchi, Ricardo; Clososki, Giuliano C.; Tetrahedron Letters; vol. 58; 44; (2017); p. 4186 – 4190;,
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

Example 57 ; 3-methoxv-4-I(I -methvlDiDeridin-4-Vl)methoxvlbenzonitrile; 53.3 ml of 1 N sodium bis (trimethylsilyl)amide added to a stirred solution of 6.63 g (51.3 mmol) of (1-methyl-piperidin-4-yl)-methanol in 14 ml of THF. After 20 minutes, solid 4-fluoro-3-methoxy benzonitrile was added. The mixture was refluxed for 20 minutes, cooled to room temperature and poured into water. The mixture was extracted with ethyl acetate. The organic extracts were dried over magnesium sulfate. The solvent was removed and the residue was recrystallized from ethyl acetate-hexanes yielding 8.9 g of the title compound as a white solid: mass spectrum (electrospray, m/e): M+H 261.2.

20691-89-8, 20691-89-8 1-Methyl-4-piperidinemethanol 271971, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; WYETH; WO2005/115145; (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.10338-57-5,4-(Piperidin-1-yl)benzaldehyde,as a common compound, the synthetic route is as follows.

10338-57-5, General procedure: The 4-alkyl(aryl)aminobenzaldehyde (1 mmol) was added to(RMe2Si)3CLi, R=H,Me (1 mmol) in THF under argon. The mixturewas reacted according to Tables 1 and 2. The reaction was quenchedwith H2O, extracted with CH2Cl2 and dried over Na2SO4. The solventwas evaporated under reduced pressure and the residue was purifiedby preparative column chromatography (n-hexane/ethylacetate) andthe corresponding products were obtained.

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

Reference：
Article; Safa, Kazem Dindar; Nadimi, Sanaz; Alyari, Maryam; Journal of Chemical Research; vol. 38; 8; (2014); p. 498 – 501;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

1187173-43-8, 2,7-Diazaspiro[4.5]decan-1-one hydrochloride is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2,7-Diazaspiro[4.5]decan-1 -one hydrogen chloride (80 mg, 0.420 mmol) was dissolved in dichloromethane (4 mL) and triethylamine (0.1 17 mL, 0.839 mmol) before the addition of 3-(trifluoromethyl)benzenesulfonyl chloride (1 13 mg, 0.462 mmol). After stirring for 20 h the reaction mixture was concentrated in vacuo and the resulting residue was purified by MDAP to give 7-{[3-(trifluoromethyl)phenyl]sulfonyl}- 2,7-diazaspiro[4.5]decan-1 -one (60 mg, 0.162 mmol, 39% yield) as a white solid. 1 H NMR (400 MHz, DMSO-d6) delta ppm 1 .35 – 1.46 (m, 2 H) 1.51 – 1.64 (m, 1 H) 1.66 – 1 .74 (m, 1 H) 1.90 – 1.98 (m, 1 H) 2.00 – 2.09 (m, 1 H) 2.20 – 2.31 (m, 2 H) 3.12 – 3.24 (m, 2 H) 3.37 (d, J=1 1 .40 Hz, 1 H) 3.67 (d, J=1 1 .24 Hz, 1 H) 7.76 (s, 1 H) 7.92 (t, J=7.87 Hz, 1 H) 7.98 (s, 1 H) 8.08 (d, J=7.95 Hz, 1 H) 8.14 (d, J=7.84 Hz, 1 H). MS ES+ve m/z 363 (M+H)., 1187173-43-8

The synthetic route of 1187173-43-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; CONVERGENCE PHARMACEUTICALS LIMITED; GLEAVE, Robert James; HACHISU, Shuji; PAGE, Lee William; BESWICK, Paul John; WO2011/141728; (2011); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

297172-16-8, (4-Methylpiperidin-4-yl)methanol is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

(4-methylpiperidin-4-yl)methanol (E4) (2.4 g, a mixture of the amino alcohol and NH4CO2H) was suspended in DCM (70 mL). Et3N (5 mL; 37.2 mmol) was then added followed by the drop-wise addition of ethyl chloroformate (1.05 mL, 13 mmol, 1.4 eq.). After 1 h at room temperature, 1N HCl (70 mL) was added and the layers were separated. The aqueous layer was extracted with DCM (70 mL) and the combined organic layers were dried over Na2SO4, filtered, and concentrated under high vacuum. The product (E5) (1.7 g) is obtained analytically pure as an oil and used without further purification. LC/MS m/z (M+1) 202.2, tR 1.89 minutes; (10-99% CH3CN-H2O gradient with 0.03% TFA, 5 min). 1H NMR (400 MHz, DMSO-d6) delta 4.05 (q, J=7.1 Hz, 2H), 3.66 (dt, J=13.6, 4.7 Hz, 2H), 3.32 (s, 2H), 3.11 (t, J=5.2 Hz, 1H), 3.11 (dd, J=23.9, 3.5 Hz, 1H), 1.44-1.37 (m, 3H), 1.26-1.22 (m, 2H), 1.19 (t, J=7.1 Hz, 3H), 0.93 (s, 3H).

297172-16-8, As the paragraph descriping shows that 297172-16-8 is playing an increasingly important role.

Reference：
Patent; Makings, Lewis R.; Blanco, Miguel Garcia-Guzman; Hurley, Dennis J.; Drutu, Ioana; Raffai, Gabriel; Bergeron, Daniele M.; Nakatani, Akiko; Termin, Andreas P.; Silina, Alina; US2008/15179; (2008); 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.

General procedure: An acetophenone derivative (1 equivalent), a benzaldehyde derivative (1 equivalent), and NaOH (1 equivalent) were added to an ethanol solvent and stirring was performed at room temperature. Water was added to the reaction mixture and extraction with ethyl acetate was performed. The organic solvent layer was collected and washed once again with water. Anhydrous MgSO4 was added thereto and dehydration was performed. Then, the solvent was distilled off under reduced pressure, and the remaining residue was purified by silica gel chromatography, to prepare the compound., 10338-57-5

The synthetic route of 10338-57-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Industry-Academic Cooperation Foundation, Yonsei University; Ewha University-Industry Collaboration Foundation; Cha University Industry-Academic Cooperation Foundation; KIM, Eosu; NAMKOONG, Kee; JEONG, Jihyeon; JANG, Sooah; KWON, Young Joo; JUN, Kyu Yeon; JEON, Kyung Hwa; PARK, Minsun; KIM, Hyunjeong; NA, Younghwa; (44 pag.)EP3626703; (2020); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem