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Acetone → Methyl 3-{ethyl[1-(propan-2-yl)piperidin-4-yl]amino}-2-methyl-5-(trifluoromethyl)benzoate

HRID 2208667
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HRID 2208667 반응식
OC(C(F)(F)F)=O.[CH2:8]([N:10]([CH:26]1[CH2:31][CH2:30][NH:29][CH2:28][CH2:27]1)[C:11]1[C:12]([CH3:25])=[C:13]([CH:18]=[C:19]([C:21]([F:24])([F:23])[F:22])[CH:20]=1)[C:14]([O:16][CH3:17])=[O:15])[CH3:9].[CH3:32][C:33]([CH3:35])=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>C(Cl)Cl.CC(O)=O>[CH2:8]([N:10]([CH:26]1[CH2:31][CH2:30][N:29]([CH:33]([CH3:35])[CH3:32])[CH2:28][CH2:27]1)[C:11]1[C:12]([CH3:25])=[C:13]([CH:18]=[C:19]([C:21]([F:24])([F:23])[F:22])[CH:20]=1)[C:14]([O:16][CH3:17])=[O:15])[CH3:9]
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7

반응물 4

HCID 180AcetoneHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 131735971Methyl 3-[ethyl(piperidin-4-yl)amino]-2-methyl-5-(trifluoromethyl)benzoate TFA salt

생성물 1

HCID 70873916Methyl 3-{ethyl[1-(propan-2-yl)piperidin-4-yl]amino}-2-methyl-5-(trifluoromethyl)benzoate수율 17%

시약·촉매·용매 2

HCID 176Acetic Acid용매HCID 6344Dichloromethane용매

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온도
23 °C

실험 절차

To a stirred solution of methyl 3-[ethyl(piperidin-4-yl)amino]-2-methyl-5-(trifluoromethyl)benzoate TFA salt (crude material, 1.30 g, 3.36 mmol) in CH2Cl2 (20 mL) and AcOH (5 mL) was added acetone (590 mg, 10.1 mmol) and sodium triacetoxyborohydride (1.80 g, 8.40 mmol). The reaction mixture was stirred at 23° C. for 6 days and then saturated NaHCO3 was added and the mixture was separated. The aqueous layer was extracted with CH2Cl2 (3×30 mL) and the combined organic layer was concentrated in vacuo. The residue was purified by silica gel column chromatography (NH—SiO2 heptane/ethylacetate=5/1) to give the titled compound as oil (220 mg, 17% yield). 1HNMR (400 MHz, CDCl3) δppm; 7.79 (br. s., 1H), 7.44 (d, J=1.6 Hz, 1H), 3.91 (s, 3H), 3.10 (q, J=7.0 Hz, 2H), 2.86 (m, 2H), 2.61-2.75 (m, 2H), 2.53 (s, 3H), 2.06 (m, 2H), 1.70-1.80 (m, 2H), 1.58-1.69 (m, 2H), 1.00 (s×2, 6H), 0.84 (t, J=7.0 Hz, 3H); MS (ES) [M+H] 387.2.

후처리

  1. customthe mixture was separated
  2. extractionThe aqueous layer was extracted with CH2Cl2 (3×30 mL)
  3. concentrationthe combined organic layer was concentrated in vacuo
  4. customThe residue was purified by silica gel column chromatography (NH—SiO2 heptane/ethylacetate=5/1)

출처 및 근거

ORD 기록
ord-1c025a185fc54d8ea96727e0ef761240
출처 데이터셋
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09376422B2

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