摘要:
Disclosed is a cross-coupling reaction method which forms a chemical bond selected from C-N, C-B, C-C, C-O and C-S bonds, the method comprising: preparing an aromatic compound (1) having a leaving group; preparing a compound (2) capable of undergoing a cross-coupling reaction selected from an aromatic amino compound (2-1), a diboronic acid ester or the like (2-2), an aromatic boronic acid or the like (2-3), an aromatic compound (2-4) having a hydroxyl group and an aromatic compound (2-5) having a thiol group; and performing a cross-coupling reaction of the compound (1) with the compound (2) in the presence of a palladium catalyst, a base and a compound (4) having a carbon-carbon double bond or a carbon-carbon triple bond, in the absence of a solvent.
摘要:
The present invention relates to a compound of the following formula (I):
The invention also relates to uses thereof as dye or pigment, notably as a luster pigment, and to a reflective or photonic or nanophotonic or optoelectronic device and to a metal-like reflective coating or a metal-like liquid film, comprising a compound of the invention.
摘要:
The present invention provides a precipitation promoter, which is an organic compound having one or more linear aliphatic hydrocarbon groups having not less than 10 carbon atoms, wherein the aliphatic hydrocarbon group has not less than 20 carbon atoms in total. The precipitation promoter of the present invention is used for precipitating an organic compound protected by an organic group having one or more aliphatic hydrocarbon groups having not less than 10 carbon atoms in a solvent.
摘要:
The present invention relates to the cosmetic use, in a composition containing a physiologically acceptable medium, of at least one compound of formula (I) in which: - R3 means a hydrogen atom or a hydroxyl radical, - R1 and R2 mean, independently of each other, a hydrogen atom, a linear or branched C1-C6 alkyl radical; a benzyl radical; a linear or branched C1-C6 alkylcarbonyl radical not conjugated with the carbonyl; or a linear or branched C1-C6 alkoxycarbonyl radical, and/or of an isomer and/or of a salt and/or of a solvate of said compound of formula (1), for preventing and/or treating the signs of ageing of the skin and its appendages.
摘要:
Disclosed are compounds, for example, compounds of formula I, wherein R, R0, R1-R8, n, X, Y, Y′, and E are as described herein, pharmaceutical compositions containing such compounds, and methods of treating or preventing a disease or condition, for example, cancer.