Cycloaddition of α-dialkylborylamino-n-heterocycles to cyanamides

-Diisopropylaminopyridine and 2-dipropylborylamino-1-methylbenzimidazole react with cyanamides to give chelate [4+2]-cycloadducts. X-ray crystallography has been used to establish the molecular and crystal structure of the product of the reaction of -diisopropylaminopyridine and benzoylcyanamide.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 407–411, February, 1990.     

A specific intramolecular interaction in a bis(2-thienyl)maleimide derivative

Russian Chemical Bulletin - 3,4-Bis(4-ethoxycarbonyl-3-hydroxy-5-methyl-2-thienyl)-1-phenyl-1H-pyrrole-2,5-dione shows no photochromism in the crystalline state, despite its typical...     

Nitropyridines 11. *Recyclization of quaternary nitropyridinium salts into substituted nitroanilines

Substituted nitroanilines have been obtained by the recyclization of nitropyridinium quaternary salts under the action of bases.     

Physicomechanical properties of elastomers in binary and ternary systems

A study was made of the physicomechanical and thermophysical properties of elastomers in binary and ternary systems consisting of polyamide, polyvinyl chloride, and rubber in various proportions. Binary and ternary systems with optimal physical and mechanical properties were selected from the composition-property diagrams for engineering applications. It was found that at a given ratio of polyvinyl chloride and SKN-40 rubber there is a nonmonotonic change in the physicochemical properties of films caused, apparently, by chemical interaction. It was shown that the mechanical properties of polyamide can be stabilized against thermal aging by blending with binary systems.Mekhanika Polimerov, Vol. 1, No. 5, pp. 3–12, 1965