Abstract: Compounds represented by the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are lower alkyl, R.sub.4 is lower alkoxy, R.sub.6 and R.sub.8 are methyl or trifluoro methyl, R.sub.9 is formyl, hydroxymethyl, alkoxymethyl, alkanoyloxymethyl, carboxyl, alkoxycarbonyl, lower alkenoxycarbonyl, lower alkynoxycarbonyl, carbamoyl, mono(lower alkyl)-carbamoyl, di(lower alkyl)carbamoyl or N-heterocyclylcarbonyl, R.sub.5, R.sub.7, R.sub.10, R.sub.11, R.sub.12 and R.sub.13 are hydrogen or fluorine with the proviso that at least one of R.sub.5, R.sub.7, R.sub.10, R.sub.11, R.sub.12 or R.sub.13 is fluorine or at least one of R.sub.6 or R.sub.8 is trifluoro methyl, or pharmaceutically acceptable salts thereof useful as antitumor agents are disclosed.

Abstract: An improvement in a process for the preparation of a pinacol of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and represent optionally substituted aliphatic, cycloaliphatic, araliphatic or an aromatic hydrocarbon radical by reducing a ketone of the formula ##STR2## wherein R.sup.1 and R.sup.2 have the abovementioned meanings with a base metal, the improvement comprising carrying out the reduction in the presence of an organic halogen compound and in the presence of a phosphoric acid amide, phosphoric acid ester and/or carboxylic acid amide.

Abstract: There are disclosed ethers and thioethers having a benzyl or phenyl terminal group and another terminal group which is halogenated, and which ethers and thioethers exhibit juvenile hormone activity (i.e., function as inhibitors of the development of insects from their larval state to the adult state), as well as acaricide activity.Methods for preparing the ethers and thioethers are also disclosed.