Abstract
AbstractIt is shown that hydrazine and methyl hydrazine react with 3‐keto benzofurans to yield trisubstituted pyrazoles having a phenolic character. Several pyrazole compounds have been prepared. R. Royer and E. Bisagni have shown that phenolic trisubstituted isoxazoles are formed by the action of hydroxylamine on the 3‐keto benzofurans; we have prepared other phenolic isoxazoles, thus showing how very general the reaction is.Finally we have synthesised β‐N‐diethylaminoethylether derivatives of all phenolic pyrazoles and isoxazoles.
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