Mechanistic insight into initiation and regioselectivity in the copolymerization of epoxides and anhydrides by Al complexes
作者:Yanay Popowski、Juan J. Moreno、Asa W. Nichols、Shelby L. Hooe、Caitlin J. Bouchey、Nigam P. Rath、Charles W. Machan、William B. Tolman
DOI:10.1039/d0cc05652a
日期:——
Pentacoordinate Al catalysts comprising bipyridine (bpy) and phenanthroline (phen) backbones were synthesized and their catalytic activity in epoxide/anhydride copolymerization was investigated and compared to (t-Busalph)AlCl. Stoichiometric reactions of tricyclic anhydrides with Al alkoxide complexes produced ring-opened products that were characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography
Synthesis and Biological Activity of N-Aminoethyl-terpinene-maleimidebased Thiourea Compounds
作者:Lu-zhi Liu、Jing-ni Liao、Wen-gui Duan、Gui-shan Lin、Fu-hou Lei
DOI:10.2174/1570178612666150226230645
日期:2015.3.24
In search of novel potent bioactive compounds, a series of novel maleimide-based thiourea
derivatives containing terpinene structure were designed and synthesized. Their structures were characterized
by IR, MS, NMR, UV-vis and elemental analysis. The preliminary bioassay showed that the
target compounds exhibited a certain fungicidal activity, in which compound 2-methoxyphenyl-Naminoethyl-
terpinene-maleimide-based thiourea 5h exhibited the best inhibitory ratio of 64.2%
against Alternaria solani at the concentration of 50 μg•mL-1. A few of the target compounds showed a certain growth inhibition
activity against rape root (Brassica campestris), in which compound 5h exhibited the best inhibitory ratio of
82.0% (A-class activity level) at the concentration of 100 μg•mL-1. The intermediate 4 exhibited excellent growth inhibitory
ratio of 92.3% (A-class activity level) against rape root at the concentration of 100 μg•mL-1. In addition, the structureantifungal
activity relationship of these compounds was also discussed.