Results 91 to 100 of about 10,732 (222)
Synthesis , Characterization and Biological activity of new derivatives of Chromen-2-one
, 2018 We report the organic syntheses of new derivatives from Chromen-2-one and their antibacterial activity. Compounds 4-[Acetyl-(2-oxo-2H-chromen-4-yl)-amino]- benzenesulfonyl chloride 1a, 4-[Acetyl-(2-oxo-3-phenylsulfamoyl-2H-chromen-4-yl)-
Behrami, Aziz, Aziz Behrami
core +1 more source
Synthesis and Antimicrobial Activity of Some Aldehyde Derivatives of 3-Acetylchromen-2-one
E-Journal of Chemistry, 2010 Some new 3-(substituted)-chromen-2-one have been synthesized by condensation of 3-acetylchromen-2-one with various aromatic aldehyde in presence of ethanol and alkali.
B. Lakshminarayanan +4 more
doaj +1 more source
Antifouling method and composition using chromen-4-one derivatives
, 2013 A method to utilize a chemical genus of chromen-4-one derivatives as non-toxic, environment friendly antifouling agent, a coating material for objects submerged under the water and subject to biofouling based on the chromen-4-one compounds, as well as a ...
Zhou, Xiaojian +3 more
core
Synthesis and Properties of 3-Substituted 2H-Chromen-2-ones
: The condensation of salicylaldehyde with CH acids [p-methoxyacetoacetanilide, ethyl3-amino-3-sulfanylidenepropanoate, 3-amino-N-aryl-3-sulfanylidenepropanamides, and ethyl 2-(1,3-thiazol-2- and-4-yl)acetates] afforded 3-substituted chromen-2-ones. Some
Khrustalev V.N. +4 more
core +1 more source
Acta Chimica Slovenica, 2014 The compound 3,3’-[(4-Hydroxyphenyl)methyl]bis-(4-hydroxy-2H-chromen-2-one) was synthesized by the Knoevenagel reaction. Crystals, suitable for X-ray data collection were grown by slow evaporation from an ethanol solution.
Denitsa Elenkova +3 more
doaj
Synthesis of some 3-(2-substituted sulfanyl-imidazo [2,1-b][1,3,4] thiadiazol-6-yl)-chromen-2-one and its derivatives [PDF]
, 2020 454-458A series of 3-(2-substituted sulfanyl-imidazo [2,1-b][1,3,4] thiadiazol-6-yl)-chromen-2-ones (3) have been synthesized from 3-(2-bromo acetyl) chromen-2-ones 1 and 2-amino-5-thio substituted[1,3,4]thiadiazole 2 in anhydrous ethanol.
Rao, V Rajeswar +2 more
core
, 2019 Two new thiourea (1) and urea (2) derivatives, substituted with 2-trifluoromethyl-4H-chromen-3-yl moieties at defined positions, were obtained by convenient synthetic methodologies.
Jios, Jorge Luis +13 more
core +1 more source
Photochemical synthesis of benzo[f]chromene
Photochemical & Photobiological Sciences, 2017 The one-pot photocatalytic synthesis of benzo[f]chromene was performed at room temperature by the addition of benzyl alcohol, malononitrile and β-naphthol in contact with an illuminated nano-SnO2/TiO2 composite. This study illustrated the potential of photochemical synthesis of benzo[f]chromene.
openaire +2 more sources