Epoxidation of α,β-unsaturated ketones in water. An environmentally benign protocol

2003 ◽  
Vol 5 (4) ◽  
pp. 425-428 ◽  
Author(s):  
G. Fioroni ◽  
F. Fringuelli ◽  
F. Pizzo ◽  
L. Vaccaro
Keyword(s):  
Environmentally Benign ◽  
Unsaturated Ketones

Environmentally benign access to isoindolinones: synthesis, separation and resource recycling

2020 ◽  
Vol 22 (9) ◽  
pp. 2873-2878
Author(s):  
Weiwei Guo ◽  
Qi Zhang ◽  
Yang Cao ◽  
Kaihua Cai ◽  
Shengyong Zhang ◽  
...  
Keyword(s):  
Environmentally Benign ◽  
Tandem Reaction ◽  
Unsaturated Ketones ◽  
Resource Recycling

We have developed a green and facile approach for the straightforward installation of isoindolinone skeletons via a tandem reaction of 2-cyanobenzaldehydes and α,β-unsaturated ketones/esters.

An environmentally benign protocol: catalyst-free Michael addition of aromatic amines to α,β-unsaturated ketones in glycerol

2012 ◽  
Vol 39 (2) ◽  
pp. 517-525 ◽  
Author(s):  
Anguo Ying ◽  
Qunhui Zhang ◽  
Hongmin Li ◽  
Gangfeng Shen ◽  
Weizhong Gong ◽  
...  
Keyword(s):  
Michael Addition ◽  
Aromatic Amines ◽  
Environmentally Benign ◽  
Unsaturated Ketones ◽  
Catalyst Free

scholarly journals Nano Copper-Cobalt Ferrite Catalyzed One-Pot Green Combination of β, γ- Unsaturated Ketones by Ultrasonication Method

2020 ◽  
pp. 569-618
Keyword(s):  
Heterogeneous Catalysts ◽  
Cobalt Ferrite ◽  
Reaction Medium ◽  
Environmentally Benign ◽  
Acid Chlorides ◽  
One Pot ◽  
Unsaturated Ketones ◽  
Cobalt Ferrites ◽  
Several Intervals

Nano Copper-Cobalt ferrite materials have been used as magnetically separable and reusable heterogeneous catalysts for the synthesis of β, γ - unsaturated ketones over the allylation of acid chlorides with allyl bromides is presented. Ultrasonication method used to the reaction between substituted acid chlorides with allyl halides is carried out in attendance of Nano Copper-Cobalt ferrites at room temperature by using Tetrahydrofuran (THF) as a Solvent. The present method is environmentally benign and gives very good yields. The catalyst is separated from the reaction medium using a strong magnet and reused several intervals without the loss of much catalytic activity. The mechanism of the reaction and characterization of the products are presented

An improved and sustainable approach for the synthesis of α,β-dibromo ketones using ceric ammonium nitrate and ammonium bromide

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Balaji B. Totawar ◽  
Pramod S. Kulkarni ◽  
Zubaidha K. Pudukulathan
Keyword(s):  
Ammonium Nitrate ◽  
Good Yield ◽  
Room Temperature ◽  
Bond Formation ◽  
Ceric Ammonium Nitrate ◽  
Environmentally Benign ◽  
Ammonium Bromide ◽  
Unsaturated Ketones ◽  
Radical Method ◽  
Dibromo Ketones

AbstractA simple and environmentally benign procedure for the bromination of substituted α,β-unsaturated ketones in good yield has been described using ammonium bromide as a brominating agent and ceric ammonium nitrate (CAN) as a single-electron oxidant to afford α,β-dibromoketones. The reaction involves C-Br bond formation by radical method generated by CAN. The reaction can be carried out by either at room temperature, stirring in solvent CH

Iridium-catalyzed Transfer Hydrogenation for Construction of Quinolines from 2-Aminobenzyl Alcohols with Enones in Water

Synthesis ◽  
2021 ◽  
Author(s):  
Nian hua Luo ◽  
HongLing Shui ◽  
Yuhong Zhong ◽  
Jiu-Zhong Huang ◽  
Renshi Luo
Keyword(s):  
Functional Groups ◽  
Catalytic System ◽  
Control Experiment ◽  
High Efficiency ◽  
Transfer Hydrogenation ◽  
Environmentally Benign ◽  
Iridium Complex ◽  
Unsaturated Ketones ◽  
Scale Control

Herein, we describe a method for the synthesis of functionalized quinolines from 2-aminobenzyl alcohols with α, β-unsaturated ketones. This method exhibits various functional groups tolerance, high-efficiency, environmentally benign and can be performed on a gram scale. Control experiment suggests this transformation is accomplished by iridium complex-catalyzed transfer hydrogenation, which is then followed by the Friedländer cyclization. The results display the alkali is essential for the high selectivities of this catalytic system.

1,4-Reductions of α,β-Unsaturated Ketones and Aldehydes via in situ Generated Hydridocuprates

Synlett ◽  
1989 ◽  
Vol 1989 (01) ◽  
pp. 64-66 ◽  
Author(s):  
Bruce H. Lipshutz ◽  
Christopher S. Ung ◽  
Saumitra Sengupta
Keyword(s):  
Unsaturated Ketones

Naturally Occurring Organic Acid-catalyzed Facile Diastereoselective Synthesis of Biologically Active (E)-3-(arylimino)indolin-2-one Derivatives in Water at Room Temperature

2019 ◽  
Vol 23 (16) ◽  
pp. 1778-1788 ◽  
Author(s):  
Gurpreet Kaur ◽  
Arvind Singh ◽  
Kiran Bala ◽  
Mamta Devi ◽  
Anjana Kumari ◽  
...  
Keyword(s):  
Room Temperature ◽  
Biologically Active ◽  
Environmentally Benign ◽  
Diastereoselective Synthesis ◽  
Substituted Anilines ◽  
Reaction Conditions ◽  
Naturally Occurring ◽  
Acid Catalyzed ◽  
Reaction Media ◽  
Column Chromatographic

A simple, straightforward and efficient method has been developed for the synthesis of (E)-3-(arylimino)indolin-2-one derivatives and (E)-2-((4-methoxyphenyl)imino)- acenaphthylen-1(2H)-one. The synthesis of these biologically-significant scaffolds was achieved from the reactions of various substituted anilines and isatins or acenaphthaquinone, respectively, using commercially available, environmentally benign and naturally occurring organic acids such as mandelic acid or itaconic acid as catalyst in aqueous medium at room temperature. Mild reaction conditions, energy efficiency, good to excellent yields, environmentally benign conditions, easy isolation of products, no need of column chromatographic separation and the reusability of reaction media are some of the significant features of the present protocol.

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