Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
6416051
Reference Type
Journal Article
Title
Air-stable mu-oxo-bridged binuclear titanium(IV) salophen perfluorooctanesulfonate as a highly efficient and recyclable catalyst for the synthesis of bis(indolyl) methane derivatives
Author(s)
Qiao, Jie; Gao, S; Wang, L; Wei, J; Li, N; Xu, X
Year
2020
Is Peer Reviewed?
Yes
Journal
Journal of Organometallic Chemistry
ISSN:
0022-328X
EISSN:
1872-8561
Volume
906
DOI
10.1016/j.jorganchem.2019.121039
Web of Science Id
WOS:000504038600001
Abstract
An air-stable mu-oxo-bridged binuclear Lewis acid of titanium(IV) salophen perfluorooctanesulfonate [{Ti(salophen)H2O}(2)O][OSO2C8F17](2) (1) was successfully synthesized by the reaction of Ti-IV(salophen)Cl-2 with AgOSO2C8F17 and characterized by different techniques such as IR, NMR and HRMS. TG-DSC analysis showed that this complex was thermally stable at 220 degrees C. Meanwhile, it exhibited good solubility in polar organic solvents and good ionic dissociation in CH3CN solution. Fluorescence spectra and Hammett indicator results indicated that the complex had relatively strong acidity. And it showed high catalytic efficiency for the synthesis of bis(indolyl) methane derivatives through Friedel-crafts reaction of aldehyde/ketone with indoles. Moreover, it can be reused five times with minimal changes in catalytic efficiency. (C) 2019 Elsevier B.V. All rights reserved.
Keywords
Ti-IV(salophen) complex; Perfluorooctanesulfonate; Friedel-crafts reaction; Bis(indolyl) methanes; Recyclability
Tags
•
PFBS
Search
WOS
Lit Search Update: May 2019 - May 2020
WoS
•
PFOA (335-67-1) and PFOS (1763-23-1)
LitSearch: Feb 2019 - May 2020
WoS
Literature Search Update (Apr 2019 - Sep 2020)
WOS
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity