Category: 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

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

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,61995-20-8

(3) To a solution of 83.7 g of 1-benzyloxycarbonyl-3-piperidone dissolved in 1.2 liters of methylene chloride was added 55.0 g of (R)-(+)-1-(1-naphthyl)ethylamine, and after the mixture was stirred at room temperature for 2 hours, 69 ml of acetic acid and 160 g of sodium triacetoxy borohydride were added to the mixture, and the mixture was stirred at room temperature for 15 hours. To the reaction mixture was added an aqueous sodium hydroxide to make the mixture basic, and then, chloroform was added to the mixture, the mixture was stirred and the liquids were separated. The organic layer was dried and concentrated, and the residue was purified by silica gel column chromatography (hexane: ethyl acetate=4:1?0:1) to obtain 98.7 g of benzyl 3-[(R)-1-(naphthalen-1-yl)ethylamino]-piperidine-1-carboxylate. MS·APCI (m/z): 389 [M+H]+

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

Reference：
Patent; TANABE SEIYAKU CO., LTD.; EP1757582; (2007); 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

61995-20-8, General procedure: The reaction mixture containing 200 mM substrate, 1mM NAD+, 5% (v/v) 2-propanol and 10mg crude enzyme READH in 1mL potassium phosphate buffer (100mM, pH 7.0) was incubated at 50 C. For ChKRED20, 40% (v/v) 2-propanol and a reaction temperature of 40 C were applied instead. The reaction was monitored by TLC, and terminated by extracting with methyl tert-butyl ether (1 mL). The organic extract was dried over anhydrous sodium sulfate and concentrated. The samples were subjected to chiral HPLC to determine the conversion and enantiomeric excess. The products were purified by silica gel column chromatography, and identified by NMR analysis, optical rotation measurements and mass spectrometry.

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

Reference：
Article; Li, Chao; Liu, Yan; Pei, Xiao-Qiong; Wu, Zhong-Liu; Process Biochemistry; vol. 56; (2017); p. 90 – 97;,
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

To a solution of Compound 1 (5.0 g, 21.5 mmol) and ethyl 2-diazoacetate (3.2 g, 28.1 mmol) in THF (100 mL) was added BF3-Et2O (2.7 mL, 21.5 mmol) at -78 C. under N2. The reaction mixture was stirred at -78 C. for 1.5 h, then warmed to 28 C. slowly and stirred for 1.5 h. The resulting mixture was quenched with NaHCO3 (sat.) and extracted with EA (300 mL). The organic layer was dried over Na2SO4 and concentrated in vacuo to give a crude product, which was purified by flash column chromatography to give a mixture of Compound 2 and 3 (3.4 g, 50%). LCMS: 320.0 [M+1]. To a suspension of NaH (338 mg, 8.5 mmol) in THF (30 mL) was added a solution of a mixture of Compound 3 and Compound 3?(2.7 g, 8.5 mmol) in THF (30 mL) at 0 C. under N2, and stirred at rt for 0.5 h. A solution of Select F (2.7 g, 8.5 mmol) in DMF (15 mL) was added dropwise. The reaction mixture was stirred at r.t. for 3 h. The resulting mixture was quenched with NH4Cl and extracted with EA (200 mL). The organic layer was washed with brine, dried over Na2SO4 and concentrated in vacuo to give the crude product, which was purified by flash column chromatography to give Compound 4 (1.0 g, 35%) and Compound 4? (0.9 g, 32%). Compound 4: 1H NMR (400 MHz, CDCl3) delta=7.28-7.39 (m, 5H), 5.18 (s, 2H), 4.40-4.68 (m, 1H), 4.11-4.39 (m, 3H), 3.45-3.63 (m, 1H), 3.21-3.38 (m, 1H), 1.85-2.45 (m, 4H), 1.26-1.30 (m, 3H). Compound 4?: 1H NMR (400 MHz, CDCl3) delta=7.28-7.40 (m, 5H), 5.14-5.18 (m, 2H), 4.24-4.47 (m, 4H), 3.88-4.00 (m, 1H), 3.09-3.25 (m, 1H), 2.85-2.91 (m, 2H), 1.92-1.95 (m, 2H), 1.27-1.35 (m, 3H).

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

Reference：
Patent; Novira Therapeutics, Inc.; Hartman, George D.; US2015/225355; (2015); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem