Tris(2,4-pentanedionato)vanadium-catalysed cyclotrimerization and polymerization of 4-(N,N-dimethylamino)phenylethyne: X-ray structure of 1,2,4-tris[4-(N,N -dimethylamino)phenyl]benzene
作者:J. Gonzalo Rodríguez、Rosa Martín-Villamil、Isabel Fonseca
DOI:10.1039/a605474i
日期:——
Tris(pentane-2,4-dionato)vanadium-catalysed polymerization
of 4-(N,N-dimethylamino)phenylethyne gave a
polyene with π-conjugated donor substituents. Similarly,
cyclotrimerization of the acetylene derivative gave a mixture of
1,2,4- and
1,3,5-tris[4-(N,N-dimethylamino)phenyl]benzene
in variable yield, depending on the reaction conditions employed.
The molecular structure of the main 1,2,4- isomer was determined
by X-ray diffraction methods.
三(戊烷-2,4-二酮)钒催化的4-(N,N-二甲基氨基)苯乙炔聚合反应生成了具有π-共轭给体取代基的聚烯烃。类似地,乙炔衍生物的环三聚化反应在不同的反应条件下得到1,2,4-和1,3,5-三[4-(N,N-二甲基氨基)苯]苯的混合物,产率不一。主要的1,2,4-异构体的分子结构通过X射线衍射方法确定。