Studies on the Kinetics and Mechanism of Hydrolysis of p-nitrophenyl Picolinate (PNPP) by Unsymmetrical bis-Schiff Base Complexes with Aza-crown Ether or Morpholino Pendants

2006 ◽  
Vol 31 (4) ◽  
pp. 487-494 ◽  
Author(s):  
Jian-zhang Li ◽  
Bin Xu ◽  
Ying Wang ◽  
Shen-xin Li ◽  
Bo Zhou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Crown Ether ◽  
Kinetics And Mechanism ◽  
Schiff Base Complexes ◽  
Mechanism Of Hydrolysis ◽  
Hydrolysis Of ◽  
Aza Crown Ether

Studies on p-nitrophenyl picolinate cleavage by mono-Schiff base complexes with aza-crown ether or morpholino pendants

2008 ◽  
Vol 33 (5) ◽  
pp. 655-660 ◽  
Author(s):  
Jian-Zhang Li ◽  
Fa-Mei Feng ◽  
Bin Xu ◽  
Wei-Dong Jiang ◽  
Sheng-Ying Qin
Keyword(s):  
Schiff Base ◽  
Crown Ether ◽  
Schiff Base Complexes ◽  
Aza Crown Ether

Cobalt(II) Schiff Base Complexes Bearing Aza Crown Ether Pendants as Synthetic Hydrolase Catalyzing PNPP Hydrolysis

2004 ◽  
Vol 29 (5) ◽  
pp. 488-494 ◽  
Author(s):  
Jian-zhang Li ◽  
Jia-qing Xie ◽  
Wei Zeng ◽  
Xiao-yao Wei ◽  
Bo Zhou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Crown Ether ◽  
Schiff Base Complexes ◽  
Pnpp Hydrolysis ◽  
Aza Crown Ether

Synthesis and studies of hydrolysis of p-nitrophenyl picolinate catalysed by Schiff base zinc (II) complexes with aza-crown ether or morpholino-pendants

2009 ◽  
Vol 2009 (6) ◽  
pp. 345-350 ◽  
Author(s):  
Xue-song Feng ◽  
Ying Tang ◽  
Jian-zhang Li ◽  
Jin Zhang ◽  
Sheng-ying Qin
Keyword(s):  
Schiff Base ◽  
Crown Ether ◽  
Hydrolysis Of ◽  
Aza Crown Ether

Hydrolysis ofp-Nitrophenyl Picolinate Catalyzed by Mono-Schiff Base Complexes with Aza-crown Ether or Morpholino Pendants

2009 ◽  
Vol 27 (2) ◽  
pp. 372-378 ◽  
Author(s):  
Jianzhang LI ◽  
Weidong JIANG ◽  
Famei FENG ◽  
Bin XU ◽  
Wei HU ◽  
...  
Keyword(s):  
Schiff Base ◽  
Crown Ether ◽  
Schiff Base Complexes ◽  
Aza Crown Ether

Studies on Hydrolysis of P-Nitrophenyl Picolinate by Unsymmetrical Bis-Schiff Base Manganese Complexes with Aza-Crown Ether or Morpholino Pendants

2013 ◽  
Vol 343 ◽  
pp. 65-68
Author(s):  
Xiang Zheng ◽  
Jian Zhang Li ◽  
Sheng Tian Huang ◽  
Zhu Zhu Yang ◽  
Wei Hu
Keyword(s):  
Schiff Base ◽  
Crown Ether ◽  
Manganese Complexes ◽  
High Catalytic Activity ◽  
Complex Structures ◽  
Ether Group ◽  
Catalytic Activities ◽  
Hydrolysis Of ◽  
Pnpp Hydrolysis ◽  
Aza Crown Ether

The unsymmetrical bis-Schiff base manganese complexes with either benzo-10-aza-crown ether pendants ( MnL1Cl, MnL2Cl) or morpholino pendant (MnL3Cl,MnL4Cl) have been employed as models for hydrolase by studying the hydrolysis reactions of p-nitrophenyl picolinate (PNPP). The effects of complex structures, reaction pH and reaction temperature on the rate of PNPP hydrolysis have been investigted. All four complexes exhibit high catalytic activity and the rate increases with pH increasing at 25 oC. The complexes of ligands containing a crown ether group exhibit higher catalytic activities than the non-crown analogues.

Sign in / Sign up

Export Citation Format

Share Document