scholarly journals Co–salen complexes as catalysts for the asymmetric Henry reaction – reversed enantioselectivity through simple ligand modification

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29108-29113 ◽  
Author(s):  
J. Dimroth ◽  
M. Weck
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Henry Reaction ◽  
Ligand Modification ◽  
Salen Complexes ◽  
Reduced Schiff Base ◽  
Cyclic Oligomers ◽  
Derivatives Of

Derivatives of Co-salen catalysts were tested in the asymmetric Henry reaction. Cyclic oligomers displayed a higher catalytic activity than their monomeric counterparts, and reduced Schiff-base versions showed a reversed enantioselectivity.

Structure and synthesis of copper-based Schiff base and reduced Schiff base complexes: a combined experimental and theoretical investigation of biomimetic catalytic activity

2020 ◽  
Vol 49 (43) ◽  
pp. 15461-15472
Author(s):  
Arnab Mandal ◽  
Abani Sarkar ◽  
Amit Adhikary ◽  
Debabrata Samanta ◽  
Debasis Das
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Theoretical Investigation ◽  
Schiff Base Complexes ◽  
Mechanistic Study ◽  
Reduced Schiff Base

A DFT-based mechanistic study of phosphatase and phenoxazine synthase activities of Schiff base and reduced Schiff base complexes.

Insight into the formation of H-bonds propagating the monomeric zinc complexes of a tridentate reduced Schiff base to form an infinite chain

CrystEngComm ◽  
2021 ◽  
Author(s):  
Mainak Karmakar ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Dft Calculations ◽  
Zinc Complexes ◽  
Infinite Chain ◽  
State Structure ◽  
Computational Tools ◽  
Solid State Structure ◽  
Reduced Schiff Base ◽  
Insight Into

The formation of an infinite 1D assembly is governed by the H-bonding interactions in the solid state structure of the two zinc complexes. It has been analyzed energetically using DFT calculations and several computational tools.

Synthesis, structural characterization and catalytic activity of chlororuthenium(II) complexes with substituted Schiff base/phosphine ancillary ligands

2020 ◽  
Vol 75 (9-10) ◽  
pp. 851-857
Author(s):  
Chong Chen ◽  
Fule Wu ◽  
Jiao Ji ◽  
Ai-Quan Jia ◽  
Qian-Feng Zhang
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Structural Characterization ◽  
Room Temperature ◽  
Molecular Structures ◽  
Cationic Complex ◽  
Neutral Complex ◽  
Ancillary Ligands ◽  
X Ray ◽  
X Ray Crystallography

AbstractTreatment of [(η6-p-cymene)RuCl2]2 with one equivalent of chlorodiphenylphosphine in tetrahydrofuran at reflux afforded a neutral complex [(η6-p-cymene)RuCl2(κ1-P-PPh2OH)] (1). Similarly, the reaction of [Ru(bpy)2Cl2·2H2O] (bpy = 2,2′-bipyridine) and chlorodiphenylphosphine in methanol gave a cationic complex [Ru(bpy)2Cl(κ1-P-PPh2OCH3)](PF6) (2), while treatment of [RuCl2(PPh3)3] with [2-(C5H4N)CH=N(CH2)2N(CH3)2] (L1) in tetrahydrofuran at room temperature afforded a ruthenium(II) complex [Ru(PPh3)Cl2(κ3-N,N,N-L1)] (3). Interaction of the chloro-bridged complex [Ru(CO)2Cl2]n with one equivalent of [Ph2P(o-C6H4)CH=N(CH2)2N(CH3)2] (L2) led to the isolation of [Ru(CO)Cl2(κ3-P,N,N-L2)] (4). The molecular structures of the ruthenium(II) complexes 1–4 have been determined by single-crystal X-ray crystallography. The properties of the ruthenium(II) complex 4 as a hydrogenation catalyst for acetophenone were also tested.

Synthesis, in vitro and in vivo antitumor activity of symmetrical bis-Schiff base derivatives of isatin

2014 ◽  
Vol 74 ◽  
pp. 742-750 ◽  
Author(s):  
Chengyuan Liang ◽  
Juan Xia ◽  
Dong Lei ◽  
Xiang Li ◽  
Qizheng Yao ◽  
...  
Keyword(s):  
Schiff Base ◽  
Antitumor Activity ◽  
Schiff Base Derivatives ◽  
In Vivo Antitumor Activity ◽  
Derivatives Of

Ferrocene-based porous organic polymer derived high-performance electrocatalysts for oxygen reduction

2017 ◽  
Vol 5 (42) ◽  
pp. 22163-22169 ◽  
Author(s):  
Baolong Zhou ◽  
Liangzhen Liu ◽  
Pingwei Cai ◽  
Guang Zeng ◽  
Xiaoqiang Li ◽  
...  
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
High Performance ◽  
Reduction Reaction ◽  
Organic Polymer ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer

Two nitrogen-rich porous organic polymers (POPs) were prepared via Schiff base chemistry. Carbonization of these POPs results in porous carbon nanohybrids which exhibit excellent catalytic activity toward the oxygen reduction reaction (ORR).

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