Hydrochloric Acid → 4-Methylpyridine-2-carbaldehyde

HRID 748260

반응식

HRID 748260 반응식
[H-].C([Al+]CC(C)C)C(C)C.C1(C)C=CC=CC=1.[C:18]([C:20]1[CH:25]=[C:24]([CH3:26])[CH:23]=[CH:22][N:21]=1)#N.Cl.[OH2:28]>ClCCl>[CH3:26][C:24]1[CH:23]=[CH:22][N:21]=[C:20]([CH:18]=[O:28])[CH:25]=1

참가 물질

7

반응물 5

HCID 313Hydrochloric AcidHCID 962WaterHCID 1140TolueneHCID 887392-Cyano-4-methylpyridineHCID 21225700Diisobutylaluminumhydride

생성물 1

HCID 100118944-Methylpyridine-2-carbaldehyde수율 37%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

Diisobutyl aluminium hydride in toluene (1.5 M, 43.5 ml, 65 mmol) was added dropwise to a solution of 2-cyano-4-methylpyridine (7.0 g, 59 mmol) in dichloromethane (180 ml) at −78° C., and the mixture was stirred at the same temperature for 2 hrs. The reaction mixture was combined with concentrated hydrochloric acid (28 ml) and water (112 ml), and the water layer and the organic layer were separated. The organic layer was extracted with 2 N hydrochloric acid. The water layer was combined, neutralized with sodium hydrogen carbonate and extracted with diethyl ether. The extract was washed with saturated brine and dried over anhydrous magnesium sulfate. The solvent was evaporated to give the titled compound (2.7 g, 37%).

후처리

  1. customthe water layer and the organic layer were separated
  2. extractionThe organic layer was extracted with 2 N hydrochloric acid
  3. extractionextracted with diethyl ether
  4. washThe extract was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated

출처 및 근거

ORD 기록
ord-b1b00a82f38243dda934701ba8976bd2
출처 데이터셋
uspto-grants-2008_07
특허 번호
US07399759B2

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