911053-92-4Relevant academic research and scientific papers
Ruthenium(II) complexes with substituted 2-(methylthio)-phenylsalicylaldimine Schiff-base ligands
Ji, Jiao,Chen, Xin,Lin, Hui,Jia, Ai-Quan,Zhang, Qian-Feng
, p. 105 - 111 (2019)
Three tridentate mono-anionic Schiff base ligands of the O,N,S-donor set, namely 3,5-dibromo-N-(2-(methylsulfanyl)phenyl)salicylaldimine (HL1), 5-chloro-N-(2-(methyl-sulfanyl)phenyl)salicylaldimine (HL2), and 3,5-di-tert-butyl-N-(2-(methylsulfanyl)phenyl)
Discovery of vanadium complexes bearing tridentate schiff base ligands as novel LSD1 inhibitors
Lu, Ling-Pan,Liu, Jin-Hai,Cen, Shi-Hong,Jiang, Ya-Ling,Hu, Guo-Qiang
, p. 681 - 683 (2019)
Lysine specific demethylase (LSD1) plays a pivotal role in epigenetic modulation of gene expression. Abberrant expression of LSD1 was associated with the progress and oncogenesis of multiple human cancers. Herein, we report the preliminary anti-LSD1 evalu
Dual Catalysis of the Selective Polymerization of Biosourced Myrcene and Methyl Methacrylate Promoted by Salicylaldiminato Cobalt(II) Complexes with a Pendant Donor
Jia, Xiaoyu,Li, Wenxin,Zhao, Junyi,Yi, Feiyan,Luo, Yunjie,Gong, Dirong
, p. 278 - 288 (2019/02/01)
Cobalt complexes (Co1-Co6) bis-chelated by phenoxy (4,6-di-tert-butyl-2-phenol, naphthalen-2-ol)-imine ligands containing pendant hard oxygen (Co1 and Co4), soft sulfur (Co2 and Co5), or phosphine donors (Co3 and Co6) are reported for dual catalysis of selective polymerization for biosourced myrcene and methyl methacrylate (MMA). X-ray analysis reveals that the complexes features a distorted octahedral coordination of the cobalt center binding with phenolate oxygen, imine nitrogen, and pendant donor (P for Co3 and S for Co5). Activated by MMAO or AliBu3, all precursors are able to not only convert myrcene to cis-1,4-polymyrence but also polymerize MMA resulting in poly(methyl methacrylate) (PMMA) with moderate syndiotacticity. The introduction of pendant donor concurrently improves activity and stability particularly at 60-80 °C for polymerizations of both monomers. The enhanced activity and selectivity observed in myrcene cis-1,4 polymerization promoted by the sulfur and oxygen containing catalysts may relate to the weak Co-X (X = O, S) interaction, facilitating myrcene coordination. However, the donor effect on MMA polymerization activity is reversed, with phosphine donated catalyst demonstrating remarkably enhanced activity. This study represents the first example of cobalt catalyzed polymerization of both polar and nonpolar functions via possible mechanisms differentiated by pendant donor and also may provide valuable insights into their essential role in mediating the polymerization process.
The enhanced catalytic performance of cobalt catalysts towards butadiene polymerization by introducing a labile donor in a salen ligand
Gong, Dirong,Wang, Baolin,Jia, Xiaoyu,Zhang, Xuequan
, p. 4169 - 4178 (2014/03/21)
A family of cobalt complexes supported by a tridentate Schiff base ligand with a labile donor (O, S, N) as a pendant arm (Co1-Co12, formulated as CoL 2) were synthesized by the treatment of the corresponding ligands with cobalt acetate tetrahyd
