scholarly journals Synthesis and Characterization of Some New 4-Hydroxy-coumarin Derivatives

Molecules ◽  
2014 ◽  
Vol 19 (8) ◽  
pp. 11791-11799 ◽  
Author(s):  
Yasameen Al-Majedy ◽  
Abdul Kadhum ◽  
Ahmed Al-Amiery ◽  
Abu Mohamad
Keyword(s):  
Synthesis And Characterization ◽  
Coumarin Derivatives ◽  
Hydroxy Coumarin

Synthesis and characterization of SFX-based coumarin derivatives for OLEDs

2021 ◽  
Vol 185 ◽  
pp. 108969
Author(s):  
Hui Zhang ◽  
Xiaochun Liu ◽  
Yuxuan Gong ◽  
Tianzhi Yu ◽  
Yuling Zhao
Keyword(s):  
Synthesis And Characterization ◽  
Coumarin Derivatives

ChemInform Abstract: Synthesis and Characterization of New 3-Acyl-7-hydroxy-6,8-substituted-coumarin and 3-Acyl-7-benzyloxy-6,8-substituted-coumarin Derivatives.

ChemInform ◽  
2010 ◽  
Vol 41 (44) ◽  
pp. no-no
Author(s):  
Franco Chimenti ◽  
Adriana Bolasco ◽  
Daniela Secci ◽  
Bruna Bizzarri ◽  
Paola Chimenti ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Coumarin Derivatives

scholarly journals Synthesis and Characterization of New Mannich Bases Derived from 7-hydroxy-4-methyl Coumarin

2016 ◽  
Vol 13 (2) ◽  
pp. 235-243
Author(s):  
Baghdad Science Journal
Keyword(s):  
Spectral Analysis ◽  
Mass Spectrum ◽  
Physical Properties ◽  
Benzene Ring ◽  
Sodium Acetate ◽  
Mannich Bases ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
Coumarin Derivatives

Coumarin is a natural substance isolated from different plants. It belonges to a group of benzobyrones which consists of a benzene ring joined to a pyrone nucleus. In the present research, a new series of coumarin derivatives were formed. Compound (1) (7-hydroxy-4-methyl Coumarin) was converted into 4-methylquinolin-2(H) derivative (2) by reaction with acetamide, and then reaction of (2) with thiosemicarbazide in ethanol leads to the synthesize of hydrazincarbothioamide derivative (3).The reaction of (3) with ethylchloroacetate in presence of sodium acetate leads to closure ring to get [(1-(5-oxo-2-thioxoimidazolidin-1-ylimino) ethyl)]quinolin-2(1H)-one (4). Mannich bases were prepared through the reaction of (4) with primary amines to form compounds (5-6). New coumarin derivatives were characterized by their physical properties and various spectral analysis like: FTIR, 1HNMR spectra and GC-Mass spectrum for some of them.

Synthesis and characterization of new 3-acyl-7-hydroxy-6,8-substituted-coumarin and 3-acyl-7-benzyloxy-6,8-substituted-coumarin derivatives

2010 ◽  
pp. n/a-n/a
Author(s):  
Franco Chimenti ◽  
Adriana Bolasco ◽  
Daniela Secci ◽  
Bruna Bizzarri ◽  
Paola Chimenti ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Coumarin Derivatives

Designing, synthesis, and characterization of some novel coumarin derivatives as probable anticancer drugs

2012 ◽  
Vol 22 (9) ◽  
pp. 4146-4157 ◽  
Author(s):  
Darla Mark Manidhar ◽  
Rajesh Kumar Kesharwani ◽  
N. Bakthavatchala Reddy ◽  
C. Suresh Reddy ◽  
Krishna Misra
Keyword(s):  
Anticancer Drugs ◽  
Synthesis And Characterization ◽  
Coumarin Derivatives

scholarly journals Synthesis and characterization of some novel coumarin based various 2-aryl-pyrido [3,2-c] coumarins

2020 ◽  
Vol 10 (2) ◽  
pp. 158-163
Author(s):  
Mahesh K. Pandya ◽  
Tapan H. Parekh ◽  
Mehulsinh R. Chhasatia ◽  
Nileshkumar D. Vala
Keyword(s):  
Acetic Acid ◽  
Spectral Data ◽  
Ammonium Acetate ◽  
Mannich Bases ◽  
Synthesis And Characterization ◽  
Pyridinium Salts ◽  
Coumarin Derivatives ◽  
New Methods ◽  
Active Interest

A survey of the literature reveals that the number of coumarin derivatives having heterocyclic moieties either as substituent groups or fused with parent coumarin nucleus possesses a variety of functions and are widely used in drugs and dyes. Because of this wide utility, the synthesis of coumarin has remained a subject of active interest. Looking at the importance of these heterocoumarins and with a view to exploring new methods of their synthesis, the present work was undertaken and  this synthesis deals with  various 2-aryl-pyrido [3,2-c] coumarins. The compounds have been synthesized by reacting Mannich bases of various 4-hydroxy coumarins with pyridinium salts of various aroyl methyl bromides in the presence of ammonium acetate and acetic acid. All the compounds synthesized have been characterized by analytical and spectral data. Keywords: Pyrido, Coumarins, Krohanke’s reaction.

scholarly journals Synthesis and characterization of palladium(II) complexes with glycine coumarin derivatives

2016 ◽  
Vol 81 (12) ◽  
pp. 1383-1392
Author(s):  
Danijela Stojkovic ◽  
Alessia Bacchi ◽  
Davide Capucci ◽  
Milica Milenkovic ◽  
Bozidar Cobeljic ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
Water Solution ◽  
13C Nmr Spectroscopy ◽  
Synthesis And Characterization ◽  
Coumarin Derivatives ◽  
1H And 13C Nmr ◽  
X Ray ◽  
Ir And Nmr Spectroscopy

A Pd(II) complex with methyl 2-((1-(2,4-dioxochroman-3-ylidene)ethyl)amino)acetate was synthesized. The structures of both the ligand and Pd(II) complex were determined by elemental analysis, IR and NMR spectroscopy. Recrystallization of Pd(II) complex from DMF/water solution resulted in its hydrolysis and formation of dimethylamine-(2-((1-(2,4-dioxochroman-3-ylidene)ethyl)amino)acetato)palladium(II) complex, the structure of which was determined by elemental analysis, IR, 1H and 13C NMR spectroscopy, as well as X-ray analysis.

Synthesis and characterization of carbazole dendronized coumarin derivatives as solution-processed non-doped emitters and hole-transporters for electroluminescent devices

2014 ◽  
Vol 38 (7) ◽  
pp. 3282 ◽  
Author(s):  
Narid Prachumrak ◽  
Sirintra Pojanasopa ◽  
Ruangchai Tarsang ◽  
Supawadee Namuangruk ◽  
Siriporn Jungsuttiwong ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Coumarin Derivatives ◽  
Solution Processed ◽  
Electroluminescent Devices
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