Knoevenagel condensation reaction catalysed by Al-MOFs with CAU-1 and CAU-10-type structures

CrystEngComm ◽  
2017 ◽  
Vol 19 (29) ◽  
pp. 4187-4193 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Niclas Heidenreich ◽  
Dirk Lenzen ◽  
Norbert Stock
Keyword(s):  
Heterogeneous Catalyst ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Reaction Conditions ◽  
Knoevenagel Condensation Reaction

This manuscript reports the Knoevenagel condensation reaction between benzaldehyde and malononitrile using CAU-1-NH2 as a reusable heterogeneous catalyst under mild reaction conditions.

3D nanoweb-like zeolitic imidazole framework in a microfluidic system for catalytic applications

2020 ◽  
Vol 5 (6) ◽  
pp. 1129-1134 ◽  
Author(s):  
Dong-Hyeon Ko ◽  
Rui Chen ◽  
Dengrong Sun ◽  
Jin Woo Leem ◽  
Jeong-Un Joo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Heterogeneous Catalyst ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Microfluidic Channel ◽  
Microfluidic System ◽  
Knoevenagel Condensation Reaction ◽  
Catalytic Applications ◽  
Efficient Heterogeneous Catalyst

A 3D nanoweb-like zeolite imidazole framework (ZIF-8) as an efficient heterogeneous catalyst was structured inside a microfluidic channel for Knoevenagel condensation reaction by growing the ZIF on 3D carbon nanotube (CNT) networks bridging the built-in micropillars.

scholarly journals New dicationic DABCO-based ionic liquids: a scalable metal-free one-pot synthesis of bis-2-amino-5-arylidenethiazol-4-ones

2019 ◽  
Vol 6 (7) ◽  
pp. 190997 ◽  
Author(s):  
Wael A. A. Arafa ◽  
Asmaa K. Mourad
Keyword(s):  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Significant Loss ◽  
Single Step ◽  
Scale Production ◽  
Reaction Conditions ◽  
One Pot ◽  
Dicationic Ionic Liquid ◽  
Knoevenagel Condensation Reaction ◽  
Green Conditions

Herein, a novel DABCO-based dicationic ionic liquid (bis-DIL) was easily prepared from the sonication of DABCO with 1,3-dichloro-2-propanol and then characterized by several techniques. Thereafter, under the ultimate green conditions, the performance of the bis-DIL was examined for the sono-synthesis of a new library of bis-2-amino-5-arylidenethiazol-4-ones via one-pot pseudo-five-component Knoevenagel condensation reaction of appropriate dialdehydes, rhodanine and amines. This protocol is tolerant towards several mono- and dialdehydes, excellently high yielding and affording access to the desired products in a single step within a short reaction time. Compared with the conventional methodologies, the proposed method displayed several remarkable merits such as milder reaction conditions without any side product, green solvent media, recording well in a variety of green metrics and applicability in gram-scale production. The recyclability of the bis-DIL was also investigated with an average recovered yield of 97% for six sequential cycles without any significant loss of the activity.

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