84865-19-0

Upstream product

• 20571-42-0 7-diethylamino-2H-benzopyran-2-one 
• 98-09-9 benzenesulfonyl chloride 
• 17754-90-4 4-(Diethylamino)salicylaldehyde 
• 140-29-4 phenylacetonitrile 
• 64-67-5 diethyl sulfate 
• 4108-61-6 3-phenyl-7-amino-coumarin 
• 27280-72-4 α-phenyl-β-(2-methoxy-4-aminophenyl)acrylonitrile 
• 591-50-4 iodobenzene 
• 50995-74-9 7-(diethylamino)coumarin-3-carboxylic acid 

Relevant academic research and scientific papers

Synthesis and photophysical properties of 7-(diethylamino)-3-(4-(arylethynyl)phenyl)-2H-chromen-2-ones as strong fluorescent materials

3-(4-(Arylethynyl)phenyl)-7-(diethylamino)-2H-chromen-2-ones 1a?1d were synthesized by Pd/Cu-catalyzed Sonogashira cross-coupling reactions. After the structural properties were examined by the X-ray crystal analysis, their photophysical properties including fluorescence properties in solid states were systematically studied. It was revealed that the pyrenyl derivative 1d showed high fluorescence quantum yield (ΦF = 0.87) in a THF solution, and that the phenyl derivative 1a exhibited an intense fluorescence (Φsolid = 0.15) even in a solid state. According to the TDDFT calculations, the HOMOs of compounds 1a and 1b are mainly located on the 3-(4-(arylethynyl)phenyl)-7-(diethylamino)-2H-chromen-2-one moieties, whereas on the aryl moieties for 1c and 1d. The electrochemical studies revealed that the compounds 1a and 1b underwent reversible 1e? oxidations.

MANUFACTURING METHOD OF COUMARIN DERIVATIVE, MANUFACTURING METHOD OF FLUORESCENT AGENT FOR COLORING AND MANUFACTURING METHOD OF DYE FOR FLUORESCENCE

PROBLEM TO BE SOLVED: To provide an easier, low cost and high yield manufacturing method of 3-aryl-7-N,N-dialkyl aminocoumarin derivative. SOLUTION: There is provided a manufacturing method of 3-aryl-7-dialkyl aminocoumarin derivative represented by the formula (3) by reacting acrylic acids having a 4-amino-2-carboxy-phenyl group and further a phenyl group, dialkyl sulfate compound, Lewis acid at same time or in sequence in a same bath. (3), where Ar is a phenyl group, a thienyl group, a pyridyl group or a naphthyl group which may have a substituent, R3 is a C1 to 4 linear/branched alkyl group, R4 is H, C1 to 8 linear/branched alkyl group, benzyl group or the like. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT

Palladium-catalyzed decarboxylative cross-coupling reactions: A route for regioselective functionalization of coumarins

A straightforward, regioselective, and step-economical ligand-free palladium-catalyzed decarboxylative functionalization of coumarin-3-carboxylic acids is devised. This protocol is compatible with a wide variety of electron-donating and -withdrawing substituents and allows for construction of various biologically important π-electron extended coumarins.

Highly regioselective α-arylation of coumarins via palladium-catalyzed C-H activation/desulfitative coupling

A novel regioselective α-arylation of coumarins with readily available arenesulfonyl chlorides and sodium arenesulfinates via palladium-catalyzed direct C-H functionalizations under mild reaction conditions is described. This protocol presents an unexpected and highly regio-controlled arylation of coumarins at C-3 to construct interesting 3-arylcoumarins with fascinating biological and fluorescent properties. The regioselectivity observed is in sharp contrast with that expected for the Heck reactions. Copyright

PHOTOCHEMICAL REACTIONS OF 7-AMINOCOUMARINS. 6. REACTION OF 7-DIALKYLAMINOCOUMARINS WITH HALO DERIVATIVES

3-Substituted 7-dialkylaminocoumarins were synthesized as a result of the photoreaction of 7-diethylaminocoumarin, 4-trifluoromethyl-7-diethylaminocoumarin, 4-chloro-7-diethylaminocoumarin, 4-(N-morpholino)-7-diethylaminocoumarin, and coumarin-102 (2,3,6,