potassium hydroxide in 1,4-dioxane T=60°C; 6 h;

potassium hydroxide in 1,4-dioxane T=60°C; 6 h; substituent effect on the synthesis of benzofurans, dihydrobenzofurans and 1-benzoxepin-3,5-diones; other 4- or 5-substituted 2-acetylphenoxyacetates; var. bases; Product distribution;

sodium hydride in 1,4-dioxane T=60°C; 6 h; Further byproducts given;