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3-Cyanophenylboronic acid → tert-butyl 4-(3-cyanophenyl)-3,6-dihydropyridine-1(2H)-carboxylate

HRID 551269
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HRID 551269 반응식
[C:1]([C:3]1[CH:4]=[C:5](B(O)O)[CH:6]=[CH:7][CH:8]=1)#[N:2].[C:12]([O:16][C:17]([N:19]1[CH2:24][CH:23]=[C:22](OS(C(F)(F)F)(=O)=O)[CH2:21][CH2:20]1)=[O:18])([CH3:15])([CH3:14])[CH3:13]>C(#N)C.C(=O)([O-])[O-].[Na+].[Na+]>[C:12]([O:16][C:17]([N:19]1[CH2:20][CH:21]=[C:22]([C:5]2[CH:6]=[CH:7][CH:8]=[C:3]([C:1]#[N:2])[CH:4]=2)[CH2:23][CH2:24]1)=[O:18])([CH3:15])([CH3:13])[CH3:14]
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참가 물질

5

반응물 2

HCID 27343253-Cyanophenylboronic acidHCID 10991161Tert-butyl 4-(trifluoromethanesulfonyloxy)-1,2,3,6-tetrahydropyridine-1-carboxylate

생성물 1

HCID 51356836tert-butyl 4-(3-cyanophenyl)-3,6-dihydropyridine-1(2H)-carboxylate수율 77.9%

시약·촉매·용매 2

HCID 6342Acetonitrile용매HCID 10340Sodium Carbonate용매

실험 절차

3-Cyanophenyl boronic acid (1.8 g, 12.2 mmol) and 4-(trifluoromethanesulfonyloxy)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester (5.0 g, 15.2 mmol;) are dissolved in acetonitrile (60 ml) and 0.4 M aqueous sodium carbonate (60 ml). The solution is degassed and treated with palladium tetrakistriphenyl phosphine (0.81 g, 0.7 mmol) at 90° C. for 1 hour. The reaction is cooled, filtered warmed and the filtrate is concentrated to an oil. The oil is extracted with methylene chloride (3×) and the solvent is removed under vacuum. The residue is chromatographed (15% ethyl acetate/hexane) to give the title compound as a white solid (2.7 g, 9.5 mmol). 1H NMR (CDCl3, 300 MHz) δ 7.63 (s, 1H), 7.55 (m, 2H), 7.44 (t, 1H), 6.10 (br, 1H), 4.09 (m, 2H), 3.63 (t, 2H), 2.50 (br, 2H). EI MS M++1: 285.

후처리

  1. customThe solution is degassed
  2. temperatureThe reaction is cooled
  3. filtrationfiltered
  4. temperaturewarmed
  5. concentrationthe filtrate is concentrated to an oil
  6. extractionThe oil is extracted with methylene chloride (3×)
  7. customthe solvent is removed under vacuum
  8. customThe residue is chromatographed (15% ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-a09f6e6a5fff4728ad70661fa982162d
출처 데이터셋
uspto-grants-2011_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07947684B2

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