摘要:
The present invention provides novel Ruthenium-based transition metal complex catalysts comprising specific ligands, their preparation and their use in hydrogenation processes. Such complex catalysts are inexpensive, thermally robust, and olefin selective.
摘要:
The invention relates to a method of manufacturing triazine, pyrimidine and pyridine derivatives of formula (I), wherein U, V, W and Z are nitrogen or carbon atoms, whereby at least one of U, V and W is nitrogen, and the other substituents are defined as in the specification, by condensing a corresponding halo-triazine, pyrimidine or pyridine in a type of Suzuki coupling with a pyridyl- or pyrimidinyl-borane, wherein the amino function is protected as a formamidine. The invention further relates to suitable intermediates and methods of manufacturing of such intermediates. Furthermore the invention relates to pure 5-(4,6-dimorpholino-1,3,5-triazin-2-yl)-4-(trifluoromethyl)pyridin-2-amine in solid form.
摘要:
A compound of formula IV: wherein R1, R2, and R3 are, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; Ar is heteroaryl, aryl, alkyl or cycloalkyl; b and c are, independently at each occurrence, an integer ranging from 0-4; a is an integer ranging from 0-3; and n is an integer ranging from 2 to 4.
摘要:
The invention relates to palladium(0) tris{tri-[3,5-bis(trifluoromethyl)-phenyl]-phosphine} complex of formula (I), as well as to its preparation and use. This compound is outstandingly stable, and can be used as catalyst with excellent results.
摘要:
A compound of formula II is prepared by: reacting a compound of formula F with 1-chloro-3,5-dibromobenzene to form a compound of formula G; reacting the compound of formula C with pinacol diborane to form a compound of formula H; reacting the compound of formula H with 1-bromo-3-iodobenzene to form a compound of formula J; and reacting the compound of formula J with pinacol diborane to form a compound of formula K; and reacting the compound of formula K with 3,5-dibromopyridine to form the compound of formula II.
摘要:
Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof.Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R1's and T are as described in claim 1) with a tertiary amine represented by a general formula [2] (in the formula, definitions of R3 to R5 are as described in claim 1), and a disulfonic acid ester represented by a general formula [1′] (in the formula, two R16's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5).
摘要:
Provided is a method of preparing asymmetric anthracene derivative, more particularly, a method for high-yield production of an anthracene derivative in which an alkyl group, a cycloalkyl group, a heterocycloalkyl group, an aryl group or a heteroaryl group is introduced at position 2 of anthracene, and an aryl group or a heteroaryl group is introduced at each of positions 9 and 10 of the anthracene.
摘要:
Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; b is, independently at each occurrence, an integer ranging from 0-3; Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl; Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl; c is 0, 1 or 2; and n is an integer ranging from 2-4.
摘要:
A process for preparation of E-isomer of 1-(4-methylphenyl)-1-(2-pyridyl)-3-pyrrolidinoprop-1-ene of Formula-I, and acid addition salts thereof, said process comprising; dehydrating 1-(4-methylphenyl)-1-(2-pyridyl)-3-pyrrolidinopropan-1-ol of Formula III followed by adding a base solution to obtain a mixture of E and Z isomers of 1-(4-methylphenyl)-1-(2-pyridyl)-3-pyrrolidinoprop-1-ene, and washing said mixture of E and Z isomers of 1-(4-methylphenyl)-1-(2-pyridyl)-3-pyrrolidinoprop-1-ene with water to dissolve Z isomer and to obtain E-isomer of 1-(4-methylphenyl)-1-(2-pyridyl)-3-pyrrolidinoprop-1-ene of Formula I, which is substantially free from Z isomer.