cas 4940-52-7, 2-Benzylidene-6-methoxybenzofuran-3(2H)-one

Articles about 4940-52-7Total 5 be found

A Palladium-Catalyzed Oxa-(4+4)-Cycloaddition Strategy towards Oxazocine Scaffolds
A Pd-catalyzed oxa-(4+4)-cycloaddition between 1-azadienes and (2-hydroxymethyl)allyl carbonates is described. Aurone-derived azadienes furnished polycyclic 1,5-oxazocines in good yields. Interestingly, linear azadienes have also been involved and yielded monocyclic heterocycles with complete regioselectivity. DFT calculations were carried out to gain insight on this observation.
Scuiller, Ana?s,Liu, Xueyang,Cordier, Marie,Garrec, Julian,Archambeau, Alexis
supporting information
p. 981 - 986
(2021/06/02)

O-Heterocycles by the Cyclization of Side-Chain Bromomethoxylated 2'-Acetoxychalcones
The title chalcone derivatives react with aqueous sodium hydroxide of various concentrations to form aurones as the major product, together with small amounts of flavones.However, the introduction of 4'-nitro or 4'-chloro substituents resulted in the formation of flavones as the major product.
Donnelly, John A.,Higginbotham, Clement L.
p. 83 - 87
(2007/10/02)

Synthesis of 2-Benzylidene-3(2H)-benzofuran-3-ones (Aurones) by Oxidation of 2'-Hydroxychalcones with Mercury(II) Acetate
The reaction of 2'-hydroxychalcones with mercury(II) acetate in acetic acid gives predominantly 2-benzylidene-3(2H)-benzofuran-3-ones (aurones) in 28-62 percent yield accompanied by flavonones in 5-21 percent yield.
Sekizaki, Haruo
p. 1407 - 1409
(2007/10/02)

Synthesis of Pyridobenzofurans
Some diarylpyridobenzofurans have been conveniently synthesised in 50-65percent yield by the condensation of 2-arylidene-6-methoxycoumaran-3-ones (III) with phenacylpyridinium halides in the presence of ammonium acetate.In a similar manner some 5-h
Sarbagya, D. P.,Rangachari, K.,Mazumdar, A. K. D.,Banerji, K. D.
p. 891 - 893
(2007/10/02)