Haarmann & Reimer Gmbh

Horst Finkelmeier

Rudolf Hopp

Roland Langner

Oskar Koch

Alfred Korber

The invention relates to new derivatives of macrocyclic lactones, a process for their preparation, a pyrolysis process using these new derivatives and the use of the pyrolysis products for the preparation of saturated macrocyclic lactones.

Derivatives of cyclic lactones, a process for their preparation and a

The new dibenzoylmethane derivatives of the formula ##STR1## in which R.sup.1 denotes hydrogen, methyl or ethyl and

Preparation of novel dibenzoylmethane derivative sunscreen agents

A process for the preparation of an isochromane of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and denote hydrogen, lower alkyl or lower alkoxy, or together form a cyclopentane or cyclohexane ring which is optionally substituted by lower alkyl and

Preparation of isochromane derivatives

N-(p-sulfophenyl)-cinnamamide, which is optionally present in the form of a salt, can be prepared by the reaction of cinnamoyl chloride with sulphanilic acid in the presence of a tertiary amine. The new compound can be used in light-protection agents.

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Holzminden, Germany

Horst Finkelmeier