Abstract
Synthesis of 5-isonitroso-1, 3-dioxane-4, 6-dione (2 : isonitroso Meldrum's acid) and related compounds and their reactions were described. Compound (2) reacted with various alcohols to give hydroxyiminoacetic acid esters in moderate yields. Compound 2 was acetylated in the usual manner to give 5-acetoxyimino-1, 3-dioxane-4, 6-dione (9)as a stable crystalline substance, which acted not as a heterodiene but as a heterodienophile and underwent hetero Diels-Alder reaction with various dienes to form [4+2] adducts.
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