ChemInform Abstract: Polyethylene Glycol Functionalized Magnetic Dicationic Ionic Liquids as a Novel Catalyst and Their Application in Ring Opening of Epoxides in Water.

ChemInform ◽  
2015 ◽  
Vol 46 (39) ◽  
pp. no-no
Author(s):  
Bijan Mombeni Godajdar ◽  
Sare Mombeni
Keyword(s):  
Ionic Liquids ◽  
Polyethylene Glycol ◽  
Ring Opening ◽  
Ring Opening Of Epoxides ◽  
Dicationic Ionic Liquids ◽  
Novel Catalyst

Highly Regioselective Ring-Opening of Epoxides with Thiophenols in Ionic Liquids Without the Use of any Catalyst.

ChemInform ◽  
2006 ◽  
Vol 37 (32) ◽  
Author(s):  
Jiuxi Chen ◽  
Huayue Wu ◽  
Can Jin ◽  
Xingxian Zhang ◽  
Yuanyuan Xie ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ring Opening ◽  
Ring Opening Of Epoxides

Highly regioselective ring-opening of epoxides with thiophenols in ionic liquids without the use of any catalyst

2006 ◽  
Vol 8 (4) ◽  
pp. 330 ◽  
Author(s):  
Jiuxi Chen ◽  
Huayue Wu ◽  
Can Jin ◽  
Xingxian Zhang ◽  
Yuanyuan Xie ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ring Opening ◽  
Ring Opening Of Epoxides

Polyethylene glycol functionalized dicationic ionic liquids with alkyl or polyfluoroalkyl substituents as high temperature lubricants

2006 ◽  
Vol 16 (16) ◽  
pp. 1529 ◽  
Author(s):  
Chuan-Ming Jin ◽  
Chengfeng Ye ◽  
Benjamin S. Phillips ◽  
Jeffery S. Zabinski ◽  
Xuqing Liu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Polyethylene Glycol ◽  
High Temperature ◽  
Dicationic Ionic Liquids

scholarly journals Organocatalytic Ring-Opening Polymerization of ε-Caprolactone Using bis(N-(N′-butylimidazolium)alkane Dicationic Ionic Liquids as the Metal-Free Catalysts: Polymer Synthesis, Kinetics and DFT Mechanistic Study

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4290
Author(s):  
Nathaporn Cheechana ◽  
Wachara Benchaphanthawee ◽  
Natthapol Akkravijitkul ◽  
Puracheth Rithchumpon ◽  
Thiti Junpirom ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ring Opening ◽  
Polymerization Rate ◽  
Basis Set ◽  
Mechanistic Study ◽  
Rate Determining Step ◽  
Linker Chain ◽  
Dicationic Ionic Liquids ◽  
Plausible Mechanism ◽  
Thermal Stable

In this work, we successfully synthesized high thermal sTable 1,n-bis(N-(N′-butylimidazolium)alkane bishexafluorophosphates (1,n-bis[Bim][PF6], n = 4, 6, 8, and 10) catalysts in 55–70% yields from imidazole which were applied as non-toxic DILs catalysts with 1-butanol as initiator for the bulk ROP of ε-caprolactone (CL) in the varied ratio of CL/nBuOH/1,4-bis[Bim][PF6] from 200/1.0/0.25–4.0 to 700/1.0/0.25–4.0 by mol%. The result found that the optimal ratio of CL/nBuOH/1,4-bis[Bim][PF6] 400/1.0/0.5 mol% at 120 °C for 72 h led to the polymerization conversions higher than 95%, with the molecular weight (Mw) of PCL 20,130 g mol−1 (Đ~1.80). The polymerization rate of CL increased with the decreasing linker chain length of ionic liquids. Moreover, the mechanistic study was investigated by DFT using B3LYP (6–31G(d,p)) as basis set. The most plausible mechanism included the stepwise and coordination insertion in which the alkoxide insertion step is the rate-determining step.

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