نتایج جستجو برای: benzil
تعداد نتایج: 269 فیلتر نتایج به سال:
Photoinduced reactions of the 1,2-dicarbonyl compounds phenanthrenequinone (PQ), 1-acetylisatin (IS), and benzil (BZ) with the oxazoles 1a-j have been investigated. In photoreactions of PQ with the oxazoles, in addition to the 1,4-dioxins derived from [4 + 2] cycloaddition and the oxetanes from the Paternó-Büchi [2 + 2] reactions, [4 + 4] cycloaddition products are formed in the reactions with ...
Diffuse neutron scattering data have been recorded for the molecular crystal dbenzil, C14D10O2, using the time-of̄ight Laue technique on the SXD and PRISMA instruments at ISIS. Using SXD it was possible to access a large fraction of the total three-dimensional reciprocal space out to a Q value of 15 AÊ ÿ1, using only four individual exposures and by making use of the 3m Laue symmetry of the crys...
An efficient synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles by one-step condensation of an aldehyde, benzil, ammonium acetate and primary amine in the presence of nanocrystalline magnesium aluminate under microwave irradiation is described. The advantages of this catalyst are including simple work-up, low cost and reusability. Compared with conventional methods, the ...
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