Yadollah Delaviz

Soluble phosphine oxide containing aromatic polyamides

Abstract Several novel soluble phosphine oxide containing aromatic polyamides ( 3–6 ) have been synthesized by phosphorylation reactions of aromatic diacids with diamines. The presence of phosphine oxide linkages in the backbone gives these polymers superior properties, namely thermooxidative stability, high char yield and solubility in aprotic polar solvents.

Phosphine oxide containing aromatic polyester

Abstract A phosphine oxide containing aromatic polyester has been synthesized by the direct polycondensation reaction of bis[4-( m -carboxyphenoxy)phenyl]phenylphosphine oxide (m-BCPPO) and 4,4′-isopropylidene-diphenol (bisphenol A). The presence of phosphine oxide linkages in the backbone gives this polymer superior properties: namely thermo-oxidative stability, high char yield and solubility in common organic solvents.

Bis(5-carbomethoxy-1,3-phenylene)-30-crown-4: a macrocyclic monomer of predominantly hydrocarbon character

Abstract A general route to 5,5′-difunctionalized bis( m -phenylene) macrocycles ( 1 ) is reported. Bis(5-carbomethoxy1,3-phenylene)-30-crown-4 ( 1e ) has been synthesized in one step from methyl 3,5-dihydroxybenzoate and 1,10-dibromodecane in the presence of sodium hydride in dimethylformamide. This monomer is suitable for synthesis of backbone polymacrocycles of predominantly hydrocarbon character.

Synthesis of bis(p-phenylene)-32-crown-4 and bis(m-phenylene)-30-crown-4 macrocycles for the preparation of polyrotaxanes

Abstract The predominantly hydrocarbon macrocycles bis(p-phenylene)-32-crown-4 and bis(m-phenylene)-30-crown-4 have been synthesized in one step from hydroquinone and resorcinol, respectively, and 1,10-dibromodecane in the presence of sodium hydroxide in dioxane/1-butanol.