51589-62-9Relevant articles and documents
Photo- and thermochromic spiropyrans 43. Spectral kinetic study of new benzoxazolyl-substituted spirobenzopyrans
Rostovtseva, Irina A.,Solov'Eva, Ekaterina V.,Chernyshev, Anatoly V.,Voloshin, Nikolai A.,Trofimova, Nadezhda S.,Metelitsa, Anatoly V.
, p. 223 - 228 (2015)
[Figure not available: see fulltext.] A series of spiroindolinebenzopyrans was prepared, containing a chelating 1,3-benzoxazole group at position 8 of the benzopyran fragment. These new benzoxazolyl-substituted spirobenzopyrans showed photochromic propert
Rhodium(III)-Catalyzed ortho-Heteroarylation of Phenols through Internal Oxidative C-H Activation: Rapid Screening of Single-Molecular White-Light-Emitting Materials
Li, Bijin,Lan, Jingbo,Wu, Di,You, Jingsong
, p. 14008 - 14012 (2016/01/25)
Reported herein is the first example of a transition-metal-catalyzed internal oxidative C-H/C-H cross-coupling between two (hetero)arenes through a traceless oxidation directing strategy. Without the requirement of an external metal oxidant, a wide range of phenols, including phenol-containing natural products, can undergo the coupling with azoles to assemble a large library of highly functionalized 2-(2-hydroxyphenyl)azoles. The route provides an opportunity to rapidly screen white-light-emitting materials. As illustrative examples, two bis(triphenylamine)-bearing 2-(2-hydroxyphenyl)oxazoles, which are difficult to access otherwise, exhibit bright white-light emission, high quantum yield, and thermal stability. Also presented is the first example of the white-light emission, in a single excited-state intramolecular proton transfer system, of 2-(2-hydroxyphenyl)azoles, thus highlighting the charm of C-H activation in the discovery of new organic optoelectronic materials.
Synthesis and in vitro antibacterial and antifungal activities of benzoxazole derivatives
Khan, Khalid Mohammed,Karim, Aneela,Ambreen, Nida,Amyn, Afroz,Saied, Sumayya,Ahmed, Aqeel,Perveen, Shahnaz
, p. 894 - 900 (2013/07/26)
The in vitro antibacterial and antifungal activities of twenty-nine (29) benzoxazole derivatives were tested against fifteen Gram-positive and sixteen Gram-negative strains. Out of the twenty-nine compounds, eighteen compounds 3-5, 7-9, 11-13, 15-25 showed a broad range of activity against tested Gram-positive microorganisms, whereas rest of the compounds 6, 10, 14 and 26-31 were found to be completely inactive against all the tested strains of Gram-positive bacteria. Five compounds 8, 11-13, and 15 showed activities against Gram-negative strains whereas the rest were devoid of any activity. Twenty-one (21) out of twenty-nine (29) compounds possessed antifungal activity. The structures of the synthetic compounds were confirmed by IR, EIMS and 1HNMR spectral data.
