The first part of my diploma is dedicated to characteristics of 2H-pyran-2-ones and pericyclic reactions, among which there is an emphasis on Diels–Alder reaction.
In experimental part of my work I carried out a synthesis of 5-acetyl-3-benzoylamino-6-metyl-2H-pyran-2-one with one-pot method. In the next step I converted the obtained product to 3-amino derivate with heating under acidic conditions and protected this moiety again into 3-(4-chlorobenzoylamino) analog, the resulting product being starting compound for further preparation of cycloadducts: with double excess of maleic anhydride and heating in tetralin under the reflux I converted it into a bicyclo[2.2.2]octene adduct, taking place via Diels–Alder reaction. In the same manner I intended to synthesize bicyclo[2.2.2]octene adduct out of a 6-thienyl derivate of 2H-pyran-2-one. I than wanted to convert the adduct to a hydrazine derivate with phenylhydrazine.
|