Room Temperature Chemoselective Deoxygenation of Aromatic Ketones and Aldehydes Promoted by a Tandem Pd/TiO2 + FeCl3 Catalyst

2018 ◽  
Vol 83 (18) ◽  
pp. 11067-11073 ◽  
Author(s):  
Zhenhua Dong ◽  
Jinwei Yuan ◽  
Yongmei Xiao ◽  
Pu Mao ◽  
Wentao Wang
Keyword(s):  
Room Temperature ◽  
Aromatic Ketones

The Merger of CF3SO2Na and Palladium Catalysis to Enable Decarboxylative Cross-Coupling for the Synthesis of Aromatic Ketones under Room Temperature

2021 ◽  
Author(s):  
Pan Xie ◽  
Cheng Xue ◽  
Cancan Wang ◽  
Dongdong Du ◽  
Sanshan Shi
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Palladium Catalysis ◽  
Cross Coupling ◽  
Boronic Acids ◽  
Aromatic Ketones ◽  
Aryl Ketones ◽  
Oxocarboxylic Acids

A CF3SO2Na/Pd(OAc)2 co-catalyzed strategy is developed to produce aryl ketones via visible-light-induced decarboxylative cross-coupling of α-oxocarboxylic acids and aryl boronic acids. This process was perfomed under air at room temperature,...

scholarly journals The Three-Component Synthesis of 4-Sulfonyl-1,2,3-triazoles via a Sequential Aerobic Copper-Catalyzed Sulfonylation and Dimroth Cyclization

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 581
Author(s):  
Max Van Hoof ◽  
Santhini Pulikkal Veettil ◽  
Wim Dehaen
Keyword(s):  
Room Temperature ◽  
Aromatic Ketones ◽  
Three Component Reaction ◽  
Reaction Proceeds

4-Sulfonyl-1,2,3-triazole scaffolds possess promising bioactivities and applications as anion binders. However, these structures remain relatively unexplored and efficient synthetic procedures for their synthesis remain desirable. A practical room-temperature, aerobic copper-catalyzed three-component reaction of aromatic ketones, sodium sulfinates, and azides is reported. This procedure allows for facile access to 4-sulfonyl-1,5-disubstituted-1,2,3-triazoles in yields ranging from 34 to 89%. The reaction proceeds via a sequential aerobic copper(II)chloride-catalyzed oxidative sulfonylation and the Dimroth azide–enolate cycloaddition.

Intrazeolite photochemistry. I. Phosphorescence enhancement of aromatic ketones included in silicalite.

1984 ◽  
Vol 62 (3) ◽  
pp. 628-629 ◽  
Author(s):  
H. L. Casal ◽  
J. C. Scaiano
Keyword(s):  
Room Temperature ◽  
Chemical Processes ◽  
Aromatic Ketones ◽  
Triplet Lifetime

The triplet lifetime of β-phenylpropiophenone at room temperature is enhanced by ca. five orders of magnitude upon inclusion in the channels of silicalite, a hydrophobic zeolite. This behaviour is attributed to restrictions to mobility in this medium, and it is suggested that photochemical probes can provide a rather unique insight in the study of intrazeolite chemical processes.

scholarly journals Synthesis of Chalcone and Flavanone Compound Using Raw Material of Acetophenone and Benzaldehyde Derivative

2010 ◽  
Vol 1 (2) ◽  
pp. 81-89
Author(s):  
Ismiyarto Ismiyarto ◽  
Sabirin Matsjeh ◽  
Chairil Anwar
Keyword(s):  
Natural Products ◽  
1H Nmr ◽  
Room Temperature ◽  
Physiological Activity ◽  
Aromatic Aldehydes ◽  
Raw Material ◽  
Schmidt Reaction ◽  
Aromatic Ketones ◽  
Pale Yellow ◽  
Nmr Methods

Synthesis of flavanoid compounds of chalcone and flavanone groups have been conducted. Flavanoid Is one of the group natural products which is mostly found in plants and have been proved to have physiological activity as drug. In this research, chalcone proup compounds that being synthesized are: chalcone, 3,4-dimethoxychalcone, 2'-hidroxy-3,4-dimethoxychalcone where as compound of flavanone group that being synthesized is 3',4'-dimethoxyflavanone. The synthesis of chalcone group are carried out based on Claisen-Schmidt reaction by using raw material of aromatic aldehydes and aromatic ketones. The synthesis in carried out by stirring at the room temperature using alkali solution as catalyst and ethanol as solvent. The synthesis of 3',4'-dimethoxyflanone is made based on the nucleophilic 1,4 addition of the unsaturated α,β ketone. The synthesis is made by refluxing 2'-hydroxy-3,4-dimethoxychalcone in alkali condition for 12 hours. The identification of flavanoid compound is carried out by using spectroscopic IR, GC-MS and 1H-NMR methods. The result of each synthesis chalcone group are follows: chalcone as yellowish solid with m.p= 50 °C and the yield is 83.39%; 3,4-dimethoxychalcone as yellow solid with m.p= 57°C and the yield is 76.00% ; 2'-hydroxy-3,4-dimethoxychalcone as orange solid with m.p= 90 °C and the yield is 74.29%, for 3',4'-dimethoxyflavanone as pale yellow solid with m.p= 80 °C and the yield is 72.00%.

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