Novel and Efficient Knoevenagel Condensation over Mesoporous SBA‐15 Supported Acetate‐functionalized Basic Ionic Liquid Catalyst

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.

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

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION) ◽

10.3724/sp.j.1088.2011.01238 ◽

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

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Enzymes-Catalyzed Knoevenagel Condensation Promoted by Ionic Liquid and Deep Eutectic Solvent

Catalysis Letters ◽

10.1007/s10562-021-03718-1 ◽

2021 ◽

Author(s):

Yun Wang ◽

Hong Cheng ◽

Jia-Rui He ◽

Qiao-Xia Yao ◽

Li-Ling Li ◽

...

Keyword(s):

Ionic Liquid ◽

Knoevenagel Condensation ◽

Deep Eutectic Solvent

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Methyl ester production in microchannel using a new grafted basic ionic liquid as the nanocatalyst

Chemical Papers ◽

10.1007/s11696-021-01885-4 ◽

2021 ◽

Author(s):

Shokoufe Hosseini ◽

Gholamreza Moradi ◽

Kiumars Bahrami

Keyword(s):

Ionic Liquid ◽

Methyl Ester ◽

Basic Ionic Liquid

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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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.247 ◽

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.

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