Scope and Limitations of a Cyclization Leading to Phenanthrene Derivatives

The scope and limitations of a modified Bogert–Cook cyclization was investigated. It was found that the sequence is applicable only for the unsubstituted and the meta-substituted series.

AGENTS AFFECTING LIPID METABOLISM: XIII. THE SYNTHESIS OF 1,4-DISUBSTITUTED BICYCLO[2.2.2]OCTANE DERIVATIVES

Several routes to the synthesis of 1,4-disubstituted bicyclo[2.2.2]octanes have been explored and the syntheses of several such derivatives are reported. The 1,4-disubstituted bicyclo[2.2.2]-octane nucleus could not be prepared through an elimination reaction on a corresponding 2,5-disubstituted derivative or by the Diels–Alder reaction of various dienophiles with dimethyl 1,3-cyclohexadiene-1,4-dicarboxylate.Unusual products are obtained from the reaction of tetracyanoethylene with dimethyl terephthalate and with 1,3-cyclohexadienes containing electron-attracting groups in the 1,4-positions. Some spectral properties of these compounds are described.

THE THERMAL DECOMPOSITION OF PERACETIC ACID IN THE VAPOR PHASE

The thermal decomposition of peracetic acid in a stream of toluene was studied over the temperature range 127–360 °C. The main products of the reaction were CO2, CH3COOH, C2H6, CH4, HCHO, O2, and traces of CO. Dibenzyl was also formed.The overall decomposition of peracetic acid was partly heterogeneous and was represented by the two parallel primary reactions[Formula: see text]

[Formula: see text]The dissociation energy of the O—O bond in peracetic acid was estimated to be 30–34 kcal/mole.