摘要:
PROBLEM TO BE SOLVED: To provide a method for preparing an organic compound bearing a trifluoromethyl group on a quaternary carbon. SOLUTION: The invention relates to the method for preparing a molecule bearing a trifluoromethyl group on a quaternary carbon atom, which includes a step for preparing a reactant having a quaternary carbon atom bearing a carboxylic acid group and an electron withdrawing group; and a step for reacting the reactant with SF 4 in a solvent to substitute the carboxylic acid group with the trifluoromethyl group by using SF 4 . Furthermore, a reaction product mixture including the molecule bearing the trifluoromethyl group on the quaternary carbon atom, is provided. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a light emitting transistor material excellent in both light emission and mobility characteristics when it is used as a light emitting transistor element. SOLUTION: The light emitting transistor element uses the light emission of a diphenylpyrene-based organic compound prepared from dibromopyrene, which is shown in the figure, as a light emission layer of the transistor element. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
A catalytic Wittig method utilizing a phosphine including the steps of providing a phosphine oxide precatalyst and reducing the phosphine oxide precatalyst to produce the phosphine; forming a phosphonium ylide precursor from the phosphine and a reactant; generating a phosphonium ylide from the phosphonium ylide precursor; reacting the phosphonium yiide precursor with the aldehyde, ketone, or ester to form the olefin and the phosphine oxide which then reenters the cycle. The invention is also directed to a Mitsunobu reaction catalytic in phosphine.
摘要:
PROBLEM TO BE SOLVED: To provide a novel organic electroluminescent compound which can make an OLED having high color purity, high fluorescence quantity, and high luminance. SOLUTION: A dinaphthyl ethylene derivative is represented by structural formula (I) (wherein R 1 to R 16 are each one of hydrogen, fluorine, a cyano group, a substituted or nonsubstituted alkyl group, an alkoxy group, an amino group, an alkylthio group, an aryl group, a heterocyclic aromatic group, a condensed aromatic group, a condensed heterocyclic aromatic group, and an arylamino group and at least one of R 1 to R 14 is not hydrogen), and a method for preparing the derivative, a thin film to be used in an organic light-emitting device, an organic light-emitting device containing the thin film, and the application of the dinaphthyl ethylene derivative to the manufacturing of an organic light-emitting device are disclosed. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
Alkenyl compounds of formula (I) are claimed as new. Compounds of formula (I) are claimed characterized in that: (1) in at least one R or R group at least one CH2 group is replaced by CHCH or at least one Z or Z is CHCH; and (2) the compound contains at least one 1,4-phenylene double substituted by F, Cl, CN, CF3 or OCF3 or at least two 1,4-phenylene groups monosubstituted by F, Cl, CN, CF3 or OCF3. R ,R = 1-12C alkyl, optionally substituted by halogen, CN or CF3 and non-neighboring CH2 groups are optionally substituted by O, S, CO, COO, OCOO, CHCH, CHCF, CFCF, CC or 1,3-cyclobutylene; A = trans-1,4-cyclohexylene optionally substituted in the 1 and/or 4-positions by F, Cl, CN or CF3 and having non-neighboring CH2 groups substituted by O and/or S; A ,A = 1,4-phenylene, optionally substituted in the 2 and/or 3-position by F, Cl, CN, CF3 or OCF3 and 1 or 2 CH groups are optionally replaced by N, trans-1,4-cyclohexylene optionally substituted in the 1 and/or 4-position by F, Cl, CN or CF3 and non-neighboring CH2 groups are replaced by O and/or S or 1,4-cyclohexenylene; Z ,Z = CH2O, CF2O, COO, OCO, CF2CF2, CHCH, CHCF, CFCF, CC or a single bond; n = 0 or 1 Independent claims are included for: (1) a liquid crystalline medium (II) containing at least two liquid crystal components whereby it contains at least one compound of formula (I); (2) a liquid crystal display element containing the medium (II); and (3) an electro-optical display element containing a liquid crystal medium (II) as the dielectric.