Heterocyclic Building Blocks-piperidine

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.

7.86 g of benzyl 2,6-dioxopiperidin-3-yl carbamate were dissolved in 30 mL of THF and 30 mL of methanol. 0.786 g of 10% Pd/C catalyst was added to the above solution. The mixture was allowed to react under a flow of hydrogen at room temperature for 2h, filtered to remove the catalyst, and evaporated to remove the solvent. A light blue solid (3.818 g) was obtained.

24666-55-5, 24666-55-5 Benzyl (2,6-dioxopiperidin-3-yl)carbamate 2735493, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Tianjin Hemey Bio-Tech Co., Ltd.; EP2093228; (2009); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

768-66-1, 2,2,6,6-Tetramethylpiperidine is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Under nitrogen, 0.62 ml (3.7 mmol) 2,2,6,6-tetramethylpiperidine was added to 20 ml anhydrous THF (-78 C.). n-Buli 1.3 ml (2.5 M, 3.33 mmol) was added and the reaction mixture was stirred for 30 minutes. Compound 91 (0.83 g, 2.16 mmol), dissolved in 10 ml THF was added and the mixture was stirred for 30 minutes., 768-66-1

As the paragraph descriping shows that 768-66-1 is playing an increasingly important role.

Reference：
Patent; STOIT, Axel; Coolen, Hein K.A.C.; Van Der Neut, Martina A. W.; Kruse, Cornelis G.; US2008/9514; (2008); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

71985-80-3,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.71985-80-3,1-Methylpiperidine-4-carboxylic acid hydrochloride,as a common compound, the synthetic route is as follows.

N-Methylisonipecotic acid hydrochloride (0.5 g) was dissolved in dry SOCl2 (1.5 mL) The mixture was then heated at 80 C. for 2 hours under argon. Cooling and evaporation to dryness afforded a yellow solid which was used without further purification.

71985-80-3 1-Methylpiperidine-4-carboxylic acid hydrochloride 2760043, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; LaVoie, Edmond J.; Parhi, Ajit; Pilch, Daniel S.; Zhang, Yongzheng; Kaul, Malvika; US2015/133465; (2015); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

161975-39-9, tert-Butyl 4-(((methylsulfonyl)oxy)methyl)piperidine-1-carboxylate is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Raw material 15 (1.0 eq) was added to the reaction flask, and a sufficient amount of ACE was added as a solvent. The mixture was stirred at room temperature, and LiBr (3.0 eq) was slowly added thereto, and the temperature was gradually raised to reflux, overnight. The reaction solution was cooled to room temperature, and the reaction mixture was quenched with water. The reaction mixture was evaporated to dryness, and then the mixture was evaporated and evaporated with EtOAc and water, and the oil layer was collected, and the oil layer was washed three times with saturated brine, and the oil layer was dried over Na 2 SO 4 Product 16, no purification required.

161975-39-9, As the paragraph descriping shows that 161975-39-9 is playing an increasingly important role.

Reference：
Patent; Guangdong Zhongsheng Pharmaceutical Co., Ltd.; Chen Lijuan; Long Chaofeng; Chen Xiaoxin; Liu Zhuowei; Qian Zhiyong; Yang Jinliang; Xiang Mingli; (99 pag.)CN109970740; (2019); 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.10338-57-5,4-(Piperidin-1-yl)benzaldehyde,as a common compound, the synthetic route is as follows.

General procedure: A mixture of 8 (1 mmol), aromatic aldehyde (1 mmol) and piperdine (2 equiv.) in isopropyl alcohol was refluxed for 4-5 h. After completion of the reaction as seen from the TLC, (eluent 7:3 /hexane:ethyl acetate) the mixture was allowed to cool to room temperature. Then the reaction mixture was poured onto ice-water and neutralized with dilute HCl. The precipitated solid was filtered, washed with water and dried under vacuum.

10338-57-5, 10338-57-5 4-(Piperidin-1-yl)benzaldehyde 291354, apiperidines compound, is more and more widely used in various fields.

Reference：
Article; Ponnuchamy, Singanan; Kanchithalaivan, Selvaraj; Ranjith Kumar, Raju; Ashraf Ali, Mohamed; Soo Choon, Tan; Bioorganic and Medicinal Chemistry Letters; vol. 24; 4; (2014); p. 1089 – 1093;,
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

EXAMPLE 37 4-Hydroxymethyl-4-methyl-piperidine-1-carboxylic acid (7-[1,4]dioxepan-6-yl-4-methoxy-benzothiazol-2-yl)-amide Using 7-[1,4]dioxepan-6-yl-4-methoxy-benzothiazol-2-ylamine, phenyl chloroformate and 4-hydroxymethyl-4-methyl-piperidine, the title compound was prepared as light brown powder. MS: m/e=436(M+H+)., 297172-16-8

297172-16-8 (4-Methylpiperidin-4-yl)methanol 22507737, apiperidines compound, is more and more widely used in various fields.

Reference：
Patent; Flohr, Alexander; Jakob-Roetne, Roland; Norcross, Roger David; Riemer, Claus; US2004/235915; (2004); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem

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

To a mixture of 35 (8 g,34.3 mmol) and CH3COONa (8.44 g, 102.9 mmol) in EtOH (60 mL) and H2O (20 mL) was added hydroxylammonium chloride (7.15 g, 102.9 mmol). The reaction was stirred at room temperature for 22 h. The reaction mixture was then diluted with water (40 mL). The water layer was extracted with DCM (3 × 50 mL). The combined organic layers were dried over Na2SO4, concentrated in vacuo, and purified by flash chromatography (DCM/MeOH = 100:1, v/v) to afford the desired product. 7.3 g, 86%; oil; 1H NMR (300 MHz, DMSO- d6) 10.66 (d, J = 2.8 Hz, 1H), 7.42-7.23 (m, 5H), 5.08 (s, 2H), 4.35-4.17 (m, 2H), 3.56-3.41 (m, 2H), 2.38-2.22 (m, 2H), 1.72-1.61 (m,2H). MS (ESI): m/z 249.5 [M + H+].

61995-20-8, 61995-20-8 Benzyl 3-oxopiperidine-1-carboxylate 1514169, apiperidines compound, is more and more widely used in various fields.

Reference：
Article; Zhou, Hao; Che, Xin; Bao, Guochen; Wang, Na; Peng, Li; Barnash, Kimberly D.; Frye, Stephen V.; James, Lindsey I.; Bai, Xu; Bioorganic and Medicinal Chemistry Letters; vol. 26; 18; (2016); p. 4436 – 4440;,
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

To a mixture of TEA (6 mmol) and Boc20 (5 mmol) in DCM (40 mL) was added A14/15/16 (4.2 mmol), and stirred at rt overnight. The mixture was washed with IN HC1, NaHC03 and brine, dried over Na2S04, and concentrated in vacuo. The residue was purified through column chromatography to give the desired product.

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

Reference：
Patent; NOVIRA THERAPEUTICS, INC.; HARTMAN, George D.; FLORES, Osvaldo A.; WO2013/96744; (2013); A1;,
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

Example 6 Preparation of (S)-tert-butyl 3-((2-((Z)-(2,6-dimethylphenylimino)-((E)-2-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylidene)hydrazinyl)-methylthio)acetamido)methyl)piperidine-1-carboxylate (Compound 56C) (Synthesis Method E) To a solution of bromoacetyl bromide (26 microliters (muL), 0.299 mmol) in dichloroethane (3 mL) was added dropwise a solution of (S)-tert-butyl 3-(aminomethyl)piperidine-1-carboxylate (63.9 mg, 0.298 mmol) in dichloromethane (1 mL), followed by N-ethyl-N-isopropylpropan-2-amine (76 mg, 0.588 mmol). This mixture was stirred at room temperature for 30 min, then (E)-N-(2,6-dimethylphenyl)-2-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylidene)hydrazine-carbothioamide (100 mg, 0.196 mmol) was added as a solid and the mixture was heated to 40 C. for 90 min. It was then allowed to cool to room temperature and evaporated under reduced pressure, giving a light yellow glass, which was dissolved in acetonitrile (2 mL) and allowed to stand at room temperature. The resulting precipitate was isolated by centrifuge and decanting, washing with fresh acetonitrile. The solid was dried under a nitrogen stream and then under high vacuum. The crude product was recrystallized from acetone-isopropyl alcohol. The title compound was isolated as a white solid (36.5 mg, 24%): mp 148-151 C.; 1H NMR (400 MHz, methanol-d4) delta 9.18 (s, 1H), 8.59 (s, 1H), 8.30 (d, J=8.1 Hz, 2H), 8.12 (m, 2H), 8.07-8.00 (m, 2H), 7.58-7.43 (m, 2H), 7.33 (dd, J=8.6, 6.5 Hz, 1H), 7.25 (d, J=7.6 Hz, 2H), 4.02 (m, 2H), 3.97-3.75 (m, 2H), 3.21 (d, J=6.9 Hz, 2H), 2.90 (m, 1H), 2.59 (m, 1H), 2.35 (s, 6H), 1.84 (m, 2H), 1.78-1.63 (m, 2H), 1.44 (s, 9H), 1.29 (m, 3H); ESIMS m/z 765 (M+H)., 140645-24-5

The synthetic route of 140645-24-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; DOW AGROSCIENCES LLC; Fischer, Lindsey G.; Crouse, Gary D.; Sparks, Thomas C.; Baum, Erich W.; (129 pag.)US2016/135464; (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.189333-49-1,3-Benzyl-3,9-diazaspiro[5.5]undecane,as a common compound, the synthetic route is as follows.

Step C Preparation of (S)-tert.-butyl 2-benzenesulfonylamino-5-oxo-5-(9-phenylmethyl-3,9-diazaspiro[5.5]undecan-3-yl)pentanoate A solution of 6.82 g (19.86 mmol) of the intermediate from Step B in 20 ml dry THF containing 2.8 ml triethylamine was cooled to -10 C. 2.15 g (19.8 mmol) ethyl chloroformate were added dropwise, and the mixture was stirred for ten minutes, while a precipitate was formed spontaneously. A solution of 4.85 g (19.86 mmol) of the intermediate from Example 20, Step D in a mixture of 24 ml dry THF and 5.3 ml triethylamine was added quickly in small portions. It was warmed to room temperature, stirred over night, poured into water, and extracted three times with ethyl acetate. The combined organic layers were washed with water, dried over sodium sulfate, and concentrated under reduced pressure, and the title compound was obtained by chromatography on silica gel with dichloromethane/ethanol 93:7. yield: 3.9 g (34%) colorless crystalline solid, m.p. 134-136 C., 189333-49-1

The synthetic route of 189333-49-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Eli Lilly and Company; COR Therapeutics Inc.; US6291469; (2001); B1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem