Chemistry of Heterocyclic Compounds p. 126 - 128 (1989)
Update date:2022-08-05
Topics:
Andreichikov, Yu. S.
Vinokurova, O. V.
Gein, V. L.
Aroyl ketenes formed in the thermolysis of 6-aryl-2,2-dimethyl-1,3-dioxin-4-ones undergo a <4? + 2?>-cycloaddition reaction with acetylacetone and methyl acylpyruvates to give 2-methyl- and 2-methoxycarbonyl-3-acyl-6-arylpyran-4-ones, respectively.
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