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8-Methoxy-3-acetylcoumarin

Ethyl 2-cyclohexylmethylacetoacetate

Phenyl acetoacetate

Cyclohexyl acetoacetate

Diethyl (3,4,5-trimethoxybenzoyl)malonate

Ethyl 2-acetyl-4-cyanobutyrate

3-Oxo-2-(2-phenylhydrazono)butanoic acid ethyl ester

Ethyl 3-oxooctanoate

Ethyl 4-phthalimidoacetoacetate

Ethyl .alpha.-(o-chlorophenylhydrazono)acetoacetate

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