Ethyl 2-methylacetoacetate → HCID 178442067, compound

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Reaction Steps

1.63 Grams of 4-n-pentylaniline and 1.44 g of ethyl 2-methylacetoacetate were refluxed in benzene in the presence of a Lewis acid catalyst for 3 hours. The reaction mixture was washed with a saturated sodium hydrogencarbonate solution and a saturated brine and dried over-anhydrous sodium sulfate. After the solvent was evaporated, the resultant intermediate was refluxed in diphenyl ether for 30 minutes and allowed to cool to produce precipitates, which were collected by filtration under reduced pressure to obtain 1.01 g of 4-hydroxy-2,3-dimethyl-6-n-pentyl-quinoline (yield 42%). Its NMR spectral data are shown in the following Table 2.

Provenance & Evidence