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TiO2 hollow microspheres (TiO2-HMSs) have attracted much attention because of their high photoreactivity, low density, and good permeability. However, anatase TiO2-HMSs have poor thermal stability. In this study, surface-fluorinated TiO2-HMSs were assembled from hollow nanoparticles by the hydrothermal reaction of the mixed Ti(SO4)2–NH4HF–H2O2 solution at 180 °C. The effect of the calcination temperature...
A novel and efficient synthesis of benzoxazine and 1,3-oxazine derivatives via ligand-free copper(I)-catalyzed one-pot cascade addition/cyclization reaction has been developed. A variety of carbodiimides coupled with o-halophenylmethanols and/or substituted (Z)-3-iodoprop-2-en-1-ols to give the corresponding products in moderate to excellent yields under the mild condition.
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