Verfahren zur Herstellung von Amiden

摘要

Amides of the general formula in which R is a hydrogen atom or an alkyl, cycloalkyl, aryl, alkylamine, alkylenepolyamine, polyalkylenepolyamine, arylamine, arylenepolyamine, polyarylenepolyamine, cycloalkylamine, cycloalkylenepolyamine radical; A is or OR1 in which R1 is a C1-C3 alkyl radical, and X is a hydrogen or halogen atom, at least two X's being halogen, are prepared by reacting a C1-C3 alkanol with an acid of formula or its anhydride under esterification conditions and reacting the resultant ester with ammonia or an amine having the formula The polyhalopolyhydromethano naphthalene carboxylic acids (or anhydrides) used as starting materials may be prepared by a Diels-Alder reaction between a conjugated aliphatic diene with an olefinic dicarboxylic acid or anhydride to give a tetrahydrophthalic acid or anhydride which is then further heated with a conjugated halocyclopentadiene.