Hydrochloric Acid → (2-Chloro-4-nitrophenyl)acetaldehyde

反応式

Cl.[Cl:2][C:3]1[CH:8]=[C:7]([N+:9]([O-:11])=[O:10])[CH:6]=[CH:5][C:4]=1/[CH:12]=[CH:13]/N(C)C.C([OH:19])C>>[Cl:2][C:3]1[CH:8]=[C:7]([N+:9]([O-:11])=[O:10])[CH:6]=[CH:5][C:4]=1[CH2:12][CH:13]=[O:19]

参加物

反応物 3

HCID 313Hydrochloric Acid

HCID 702Ethanol

HCID 11310699(E)-2-(2-chloro-4-nitrophenyl)-N,N-dimethylethenamine

生成物 1

HCID 54570839(2-Chloro-4-nitrophenyl)acetaldehyde

実験手順

50 mL of 1N hydrochloric acid is added dropwise to a solution of 10 g (30.88 mmol) of [(E)-2-(2-chloro-4-nitrophenyl)vinyl]dimethylamine in 200 mL of ethanol and the reaction mixture is then refluxed for 1 hour. Then the reaction mixture is evaporated down, diluted with water, and twice extracted with ethyl acetate. The combined organic phases are dried over sodium sulfate. The purification is carried out by column chromatography on silica gel (eluant: petroleum ether/ethyl acetate (3:1)). Yield: 4.5 g (73% of theory); C8H6ClNO3 (M=199.59); Rf value: 0.62 (silica gel, petroleum ether/ethyl acetate (1:1)).