386. The structure of the glutaconic acids and esters. Part VIII. Some cyclic compounds of the glutaconic and the citraconic acid series
作者:G. A. R. Kon、B. L. Nandi
DOI:10.1039/jr9330001628
日期:——
Composition comprising cellulose and polyvinyl chloride polymer
申请人:Griffin R. Elizabeth
公开号:US20070105984A1
公开(公告)日:2007-05-10
Disclosed are compositions comprising cellulosic material, PVC or a PVC copolymer, and a coupling agent which comprises a grafted polymer, an ethylene copolymer, a carboxylated polyacrylate or mixtures thereof. Articles made from the composite cellulosic compositions are also disclosed.
Far Away from Flatland. Synthesis and Molecular Structure of Dihetera[3.3.<i>n</i>]propellanes and Trihetera[3.3.<i>n</i>]propellanes: Advanced Analogues of Morpholine/Piperazine
作者:Yevhenii M. Sokolenko、Yevhen Yu. Yurov、Bohdan V. Vashchenko、Oleksandr V. Hryshchuk、Yuliia Filimonova、Eugeniy N. Ostapchuk、Artem Artemenko、Oleg V. Zaremba、Oleksandr O. Grygorenko
DOI:10.1021/acs.joc.9b02067
日期:2019.11.1
An approach to di- and trihetera[3.3.n]propellanes (n = 2-4 ), advanced morpholine and piperazine analogues, is developed. The key step of the reaction sequence included a [3 + 2] cycloaddition reaction of unsaturated vicinal dicarboxylic acid derivatives and in situ generated azomethine ylide resulting in the formation of the pyrrolidine ring. One more heteroaliphatic ring (i.e., pyrrolidine or tetrahydrofuran)