摘要:
L'invention concerne un aldéhyde à structure norbornane de formule (I). L'invention concerne sa préparation et son utilisation en tant qu'agent ou composé odorant.
摘要:
The present invention relates to a method for preparing a styrenic olefin. The method of the present invention comprises the steps of: adding a catalyst and a solvent in a reactor and heating the reactor to create a reflux state; adding an alcohol starting material to the reactor dropwise at a constant rate; removing water generated by adding the alcohol starting material from the reactor; and purifying the obtained styrenic olefin. The method of the present invention is advantageous in minimizing byproducts and preparing styrenic olefins having a variety of substituents in high yield.
摘要:
Compounds, pharmaceutical compositions including the compounds, and methods of preparation and use thereof are disclosed. The compounds are fulvene and/or fulvalene analogs. The compounds and compositions can be used to treat and/or prevent a wide variety of cancers, including drug resistant cancers, as well as numerous inflammatory, degenerative and vascular diseases, including various ocular diseases. Representative fulvene and/or fulvalene analogs include fulvene and fulvalene analogues of various dyes, hormones, sugars, peptides, oligonucleotides, amino acids, nucleotides, nucleosides, and polyols. The compounds are believed to function, at least, by inhibiting Nox or ROS. In some embodiments, the Nox is one that is selectively expressed in cancer cells over normal cells, or one that is expressed in higher amounts in cancer cells over normal cells. Thus, the compounds are novel therapeutic agents for a variety of cancers and other diseases.
摘要:
α-pinene-containing raw material is led, together with hydrogen, into a reactor which is packed with a Ruthenium-containing catalyst. In the continuous reactor α-pinene is hydrogenated selectively to cis -pinane under elevated pressure and temperature. The sulphur content of the feed raw material is below 5 ppm.
摘要:
Embodiments in accordance with the present invention provide forming various polycycloalkyl polynorbornene polymers and copolymers which are useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes.
摘要:
A process for preparing economically and efficiently 2-methylene-3-methylbicyclo[2.2.1]heptane, 2,3-dimethylbicyclo[2.2.1]hept-2-ene, and so on, which are useful as raw materials in producing base oils for traction drive fluids to be used as lubricating oils for traction drive units, which process comprises reacting one or more C3-4 noncyclic olefins with cyclopentadiene to form one or more bicyclo[2.2.1]heptene derivatives and isomerizing the bicyclo[2.2.1]heptene derivatives in the presence of an isomerization catalyst to form one or more bicyclo[2.2.1]heptane derivatives.
摘要:
The polymerizable composition comprises: A) at least one episulfide monomer having at least one episulfide group and at least one or more functional groups capable of reacting with episulfide groups, and B) an effective amount of a polymerization catalyst system comprising: at least one salt of formula (I) in which Y - is an anion such as the corresponding acid YH has a pKa fulfulling the condition 0.5≤pKa≤ 14; and at least one tertiary amine. Application to the fabrication of optical articles, such as lenses.
摘要:
alpha -pinene-containing raw material is led, together with hydrogen, into a reactor which is packed with a Ruthenium-containing catalyst. In the continuous reactor alpha -pinene is hydrogenated selectively to cis-pinane under elevated pressure and temperature. The sulphur content of the feed raw material is below 5 ppm.