The present invention relates to a new method for the synthesis of triaroylbenzene by secondary amine and DMF-catalyzed cyclotrimerization of acetylenes. This method can be applied for the synthesis of new branched organic materials and polymers containing the triaroylbenzene moieties. The polymeriz.....
[更多]
The present invention provides a piezoelectric ceramic composition, especially a lead-free piezoelectric ceramic composition, with a suitable amount of CeO2 or CeO2-containing complex additives, which is represented by the following formula: (Na0.475K0.475Li0.05)(Nb1-xAx)O3+yCeO2+zBO2 wherein “A” re.....
[更多]
Provided herein are compounds or hypochlorous acid probes which can be used as reagents for measuring, detecting and/or screening, directly or indirectly, hypochlorous acid or hypochlorite. Provided also herein are methods that can be used to measure, directly or indirectly, the amount of hypochloro.....
[更多]
Derivatives of novel carbon bridged cyclopentadienyl-dicarbollide complexes of titanium, zirconium and hafnium display a very high activity as ethylene polymerization catalysts in the absence of a cocatalyst. This invention relates to novel group 4 metallocene catalysts bearing linked cyclopentadien.....
[更多]
The invention relates to prodrugs of 8-ss-substituted estratrienes of general formula (I) in which the Z group is bonded to the steroid, method for production thereof, pharmaceutical compositions comprising said compounds and use thereof. Said compounds of general formula (I) do not bind to a- and/o.....
[更多]
| |< <- | [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] | -> >| |
