Methyl 3-aminocrotonate → HCID 10669204, compound

Participants

Reaction Steps

A solution comprising 18.72 g of 1-methyl-2-chloroethyl α-acetyl-3-nitrocinnamate, prepared as described in Example 1, and 7.12 g of methyl 3-aminocrotonate in 48 ml of isopropanol was refluxed under stirring for 210 minutes. After cooling, the reaction mixture was evaporated to dryness under vacuum and the oil thus obtained was chromatographed on silica gel (200 g) using chloroform as eluent. Evaporating the fractions containing a sole product (TLC, chloroform: ethylacetate 95:5) gave a thick oil, which was dissolved in diethyl ether. The solvent was then evaporated off at 20°-25° C. to give 15.75 g of the title compound, m.p. 95°-102° C., which could be employed without further purification.

Provenance & Evidence