Highly selective synthesis of propylene glycol ether from methanol and propylene oxide catalyzed by basic ionic liquid

2010 ◽  
Vol 86 (1) ◽  
pp. 105-108 ◽  
Author(s):  
Chunyan De ◽  
Qinghai Cai ◽  
Xiaoguang Wang ◽  
Jingxiang Zhao ◽  
Bin Lu
Keyword(s):  
Ionic Liquid ◽  
Propylene Glycol ◽  
Propylene Oxide ◽  
Glycol Ether ◽  
Selective Synthesis ◽  
Basic Ionic Liquid

Tunable synthesis of propylene glycol ether from methanol and propylene oxide under ambient pressure

2011 ◽  
Vol 52 (3) ◽  
pp. 386-390 ◽  
Author(s):  
Yu Bai ◽  
Qinghai Cai ◽  
Xiaoguang Wang ◽  
Bin Lu
Keyword(s):  
Propylene Glycol ◽  
Propylene Oxide ◽  
Ambient Pressure ◽  
Glycol Ether

One-pot cis-selective route to sugar-fused thiazines via a masking–unmasking strategy in basic ionic liquid

2016 ◽  
Vol 94 (10) ◽  
pp. 827-832 ◽  
Author(s):  
Vijai K. Rai ◽  
Rahul K. Kosta
Keyword(s):  
Ionic Liquid ◽  
Amino Acid ◽  
Knoevenagel Condensation ◽  
Selective Synthesis ◽  
Ring Transformation ◽  
One Pot ◽  
Transformation Reaction ◽  
Basic Ionic Liquid ◽  
Ring Transformation Reaction ◽  
Cis Isomer

A novel sequential Knoevenagel condensation, thia-Michael, and amino/mercaptoacetylative ring transformation reaction cascade for cis-selective synthesis of sugar-fused 1,3-thiazine is reported. The expeditious one-pot multicomponent annulation was performed using masked amino acid viz. 2-phenyl-1,3-oxazol-5-one or masked mercaptoacid viz. 2-methyl-2-phenyl-1,3-oxathiolan-5-one, d-xylose/d-glucose, and N-aryldithiocarbamic acid in ionic liquid [bmim]OH. The acetophenone obtained as a by-product and [bmim]OH itself could be easily recycled for further use without loss of efficiency. The envisaged method is operationally simple, high yielding, and excellent diastereoselective in favor of the cis-isomer of fused thiazines.

Catalytic Performance of Imidazolide Basic Ionic Liquid in Knoevenagel Reactions in Aqueous Media

2011 ◽  
Vol 32 (4) ◽  
pp. 693-698
Author(s):  
Xuewei CHEN ◽  
Hongbing SONG ◽  
Xuehui LI ◽  
Furong WANG ◽  
Yu QIAN
Keyword(s):  
Ionic Liquid ◽  
Aqueous Media ◽  
Catalytic Performance ◽  
Basic Ionic Liquid

Electrochemical synthesis of dimethyl carbonate from methanol, CO2 and propylene oxide in an ionic liquid

2011 ◽  
Vol 86 (11) ◽  
pp. 1413-1417 ◽  
Author(s):  
Cuihong Yan ◽  
Bin Lu ◽  
Xiaoguang Wang ◽  
Jingxiang Zhao ◽  
Qinghai Cai
Keyword(s):  
Ionic Liquid ◽  
Propylene Oxide ◽  
Electrochemical Synthesis ◽  
Dimethyl Carbonate

A new route for the synthesis of propylene oxide from bio-glycerol derivated propylene glycol

2009 ◽  
pp. 3934 ◽  
Author(s):  
Zhengxi Yu ◽  
Lei Xu ◽  
Yingxu Wei ◽  
Yingli Wang ◽  
Yanli He ◽  
...  
Keyword(s):  
Propylene Glycol ◽  
Propylene Oxide

An Efficient One-Pot Four-Component Hantzsch Reaction to Prepare Hydroquinolines Catalyzed by a Poly(ethylene glycol) Bridged Dicationic Basic Ionic Liquid under Solvent-Free Conditions

2013 ◽  
Vol 781-784 ◽  
pp. 247-252
Author(s):  
Jun Luo ◽  
Tan Tan Xing ◽  
Ying Lei Wang ◽  
Jian Feng Ju
Keyword(s):  
Ionic Liquid ◽  
Ethylene Glycol ◽  
Solvent Free ◽  
Hantzsch Reaction ◽  
Poly Ethylene Glycol ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Basic Ionic Liquid ◽  
Activity Loss ◽  
Poly Ethylene

A piperidine-functionalized poly (ethylene glycol) bridged dicationic ionic liquid PEG800-DPIL(Cl) was synthesized and applied to catalyze the four-component Hantzsch reaction under solvent-free conditions and afford hydroquinolines with high to excellent yields. PEG800-DPIL(Cl) could be recovered by simple workup and recycled for at least eight times without obvious activity loss.

Tetracarboxyl-Functionalized Ionic Liquid: Synthesis and Catalytic Properties

2015 ◽  
Vol 68 (10) ◽  
pp. 1513 ◽  
Author(s):  
Miaona Feng ◽  
Guoying Zhao ◽  
Hongling Gao ◽  
Suojiang Zhang
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Propionic Acid ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
High Stability ◽  
Ammonium Acetate ◽  
Catalytic Properties ◽  
Potential Applications

Novel tetracarboxyl-functionalized 2,2′-biimidazolium-based ionic liquids (ILs) with different anions were synthesized in two steps from readily available and sustainable starting materials including ammonium acetate, glyoxal, and halogenated propionic acid. The functionalized IL exhibited higher catalytic activity towards the cycloaddition of CO2 to terminal epoxides. With propylene oxide as a substrate, the optimum yield of propylene carbonate reached 82.7 % at an initial CO2 pressure of 2.0 MPa for 4 h at 140°C. Moreover, the functionalized IL catalyst displayed a high stability and can be reused for at least five cycles without obvious loss of catalytic activity. The results provide a simple and economical way to synthesize multi-functionalized imidazolium-based ILs with versatile potential applications.

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