- Electrophilic aromatic substitution of arenes with CO2 mediated by R3SiB(C6F5)4
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The FriedelCrafts- type carboxylation of arenes has been achieved by activating CO2 with silylium borates. The reaction exhibits broader substrate applicability than does our previously reported AlX3/R 3SiX-mediated carboxylation.
- Konno, Megumi,Chiba, Masafumi,Nemoto, Koji,Hattori, Tetsutaro
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p. 913 - 914,2
(2020/08/31)
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- Thio-substituted tricyclic and bicyclic aromatic methanesulfinyl derivatives
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The present invention is related to chemical compositions, processes for the preparation thereof and uses of the composition. Particularly, the present invention relates to compositions of compounds of Formula (A): wherein Ar, Y, R1 and q are as defined herein; and their use in the treatment of diseases, including treatment of sleepiness, promotion of wakefulness, treatment of Parkinson's disease, cerebral ischemia, stroke, sleep apneas, eating disorders, stimulation of appetite and weight gain, treatment of attention deficit hyperactivity disorder ("ADHD"), enhancing function in disorders associated with hypofunctionality of the cerebral cortex, including, but not limited to, depression, schizophrenia, fatigue, in particular, fatigue associated with neurologic disease, such as multiple sclerosis, chronic fatigue syndrome, and improvement of cognitive dysfunction.
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Page/Page column 26
(2008/06/13)
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- Pigment composition
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A pigment composition contains a pigment and a dispersant. The dispersant is a phosphoric ester compound represented by the following general formula: wherein at least one of the three Rs is a residuum of a polyester chain containing as principal bonds thereof ester bonds of a polycarboxylic acid and a polyalcohol.
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- Pigment composition
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A pigment composition contains a pigment and a dispersant. The dispersant is a polyester compound which contains, per molecule, a residuum of at least two benzene rings coupled together, an aromatic ring having at least 8 carbon atoms or a heterocyclic ring having at least 8 carbon atoms, and at least one ester bond as a principal bond.
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