Metal Complexes Containing Naphthyridine Ligands: Synthesis and Catalytic Activity
Date Issued
2013
Date
2013
Author(s)
Huang, Chang-Yao
Abstract
In this work, 2- and 7-substituted 1,8-naphthyridinyl based ligands, 2-(1H-pyrazol-1-yl)-7-methyl-1,8-naphthyridine (4) and 2-(1H-pyrazol-1-yl)-7- carboxyl-1,8-naphthyridine (5) were synthesized. Complexes containing these ligands such as [(4)(h6-benzene)RuCl2] (Ru1), [(5)(h6-benzene)RuCl2] (Ru2), [(5)(h6-p-cymene)RuCl2] (Ru3) and [(5)Rh2(m-OAc)3] (Rh1) were prepared. The resulting complexes have been characterized by spectroscopic methods. Structures of both Ru2 and Ru3 were further confirmed by X-ray crystallography.
The carboxyl group on Ru2 enhances its solubility in water. Thus, we investigated its catalytic activity in aqueous medium. With the use of formate/formic acid as the hydrogen source, we studied the transfer hydrogenation of aldehydes via these ruthenium complexes. Various parameters affecting the reactions and comparison of activities of metal complexes were revealed. Hydrogen-transfer reduction of a series of carbonyl compounds typically benzaldehydes was investigated and substituent effect on substrates was discussed.
Subjects
釕
催化反應
氫轉移反應
配基
錯合物
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-102-R00223165-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):3defb5fd5a21899f107f9e923ee1f8a9