Abstract:
A compound comprising a class of sulfonated triorganophosphine compounds of formula R 1 R 2 P-R 3 [-O-(CH 2 ) n -(SO 3 M)] m , wherein the R 1 and R 2 are selected individually from alkyl, aralkyl, and alicyclic groups, wherein R 3 represents a divalent or polyvalent alkylene or alicyclic radical that is bonded to the phosphorus atom and to one or more sulfonate substituents via an alkylether link, and further wherein R 3 does not contain any aryl moieties; n is an integer reflecting a number of methylene groups in the alkylether link; M represents a monovalent cation; and m is an integer representing a total number of sulfonated alkylether substituents. The compound is useful as a ligand in transition metal-ligand complex catalysts that are capable of catalyzing the hydroformylation of an olefinically-unsaturated compound with carbon monoxide and hydrogen to form one or more corresponding aldehyde products. The ligand is incapable of alky-aryl exchange, thereby leading to reduced ligand usage and improving ligand and rhodium recovery and recycling.
Abstract:
Compounds of the formula (I), in the form of mixtures comprising predominantly one diastereomer or in the form of pure diastereomers, Z 1 -Q-P*R 0 R 1 (I) in which Z 1 is a C-bonded, secondary phosphine group -P(R) 2 ; in which R is in each case independently hydrocarbon radicals or heterohydrocarbon radicals, or Z 1 is the -P*R 0 R 1 group; Q is a bivalent, achiral, aromatic base skeleton, a bivalent, achiral ferrocene base skeleton, an optionally substituted bivalent cycloalkane or heterocycloalkane skeleton, or a C 1 -C 4 -alkylene skeleton, and in which base skeletons a secondary phosphine group Z 1 is bonded directly to a carbon atom, or, in the case of cyclic base skeletons, directly to a carbon atom or via a C 1 -C 4 -alkylene group, and in which base skeletons a P-chiral group -P*R 0 R 1 is bonded directly to a carbon atom, or, in the case of cyclic base skeletons, directly to a carbon atom or via a C 1 -C 4 -alkylene group to a carbon atom such that the phosphorus atoms are linked via 1 to 7 atoms of a carbon chain optionally interrupted by heteroatoms from the group of O, S, N, Fe or Si; P* is a chiral phosphorus atom; R 0 is methyl or hydroxyl, and R 0 is methyl when Z 1 is the -P*R 0 R 1 group; and R 1 is a C-bonded optically enriched or optically pure chiral, mono- or polycyclic, nonaromatic hydrocarbon or heterohydrocarbon radical which has 3 to 12 ring atoms and 1 to 4 rings and which has a stereogenic carbon atom at least in the α position to the P-C bond; Metal complexes of these ligands are homogeneous catalysts for asymmetric addition reactions, particularly hydrogenations.
Abstract translation:主要为一种非对映体或纯非对映体形式的混合物形式的式(I)化合物,其中Z 1为C键,仲膦基-P(R)的Z1-QP * R0R1(I) 2; 其中R各自独立地为烃基或杂烃基,或Z1为-P * R0R1基团; Q是二价,非手性,芳族碱基骨架,二价,非手性二茂铁碱骨架,任选取代的二价环烷烃或杂环烷骨架,或C1-C4-亚烷基骨架,其中,基骨架中的次膦基Z1直接键合 或在环状基团骨架的情况下直接与碳原子或C 1 -C 4 - 亚烷基直接键合,并且其中的基础骨架中,P手性基团-P * R0R1直接键合到碳上 或者在环状基骨架的情况下,直接连接到碳原子上,或者通过C1-C4-亚烷基与碳原子连接,使得磷原子通过1至7个任选被杂原子中断的碳链原子连接 由O,S,N,Fe或Si组成; P *是手性磷原子; R 0是甲基或羟基,当Z 1是-P * R 0 R 1基团时,R 0是甲基; 并且R 1是C-键合的光学富集或光学纯的手性,单或多环,非芳族烃或杂烃基,其具有3至12个环原子和1至4个环,并且其具有立体碳原子至少在 PC债券; 这些配体的金属络合物是用于不对称加成反应的均相催化剂,特别是氢化。
Abstract:
The present invention discloses new efficient processes for various bond forming reactions, includidng Suzuki reactions and aryl animations. Organic compounds (e.g., ligands), their metal complexes and compositions using those compounds, provide useful catalysts. The invention also relates to performing Suzuki cross coupling reactions with unreactive aryl-chlorides.
Abstract:
Metallocene compounds of formula (I) in which: CpI and CpII represent carbanions with a structure containing cyclopentadienyl; D represent a donator atom and A an acceptor atom, D and A being linked by a reversible, co-ordinative bond such that the donator group adopts a positive (partial) charge and the acceptor group a negative (partial) charge; M stands for a transitional metal of the IIIrd, IVth, Vth or VIth subgroup of the periodic system of elements (Mendeleev's table) including lanthanides and actinoides; X stands for an anion equivalent; and n, depending on the charge of M, stands for the figure nought, one, two, three or four. These compounds are new and can be used as catalysts for the (co)polymerisation of olefins, i-olefins, alkines and/or diolefins or for ring-opening polyaddition. A typical x-ray structural analysis is represented by formula (18a).
Abstract:
Phosphines having two aryl groups and one alkyl-substituted cycloalkyl group bonded to a phosphorus atom are formed by reacting an alkali metal diarylphosphide with a monoalkyl- or polyalkyl-substituted cycloalkyl mesylate or tosylate in which an alkyl group is in the 2-position, in a liquid reaction medium in which these reactants are soluble. This process avoids complications associated with prior known process technology for producing such phosphines. The phosphines are useful as ligands for making noble metal catalysts.
Abstract:
A process for making a cycloalkyl phosphine comprising hydrogenating an aryl phosphine in the presence of an effective amount of an aryloxide of a metal selected from the group consisting of niobium and tantalum is disclosed. Cycloalkyl phosphine products of this process, useful as ligands in a complex of a transition metal which acts as a catalyst in the formation of stereoisomers, are also set forth. Furthermore, niobium or tantalum organometallic compounds, generated in this process, useful in the catalytic hydrogenation of aryl phosphines and arene-containing polymers, is also described.
Abstract:
This method for producing an aromatic compound is characterized by including a step in which a compound represented formula (A) and a compound represented by formula (B) are mixed in the presence of at least one type of phosphine compound selected from a group comprising a phosphine represented by formula (C) and a phosphonium salt represented by formula (D), a base, a palladium compound, and an aprotic organic solvent.
Abstract:
The invention relates to phosphenium compounds of general formula (I), where R, R1, R2, R3 and R4 are identical or different and stand for a linear or branched C1-C6 alkyl radical that may optionally be substituted, or R1 and R2 and/or R3 and R4 are bonded to each other, forming a ring, R5 and R6 stand for a saturated or unsaturated branched or linear alkyl group, alkenyl group or aryl group that may have suitable substituents, including hetero atoms from substituents, a hetero atom-containing hydrocarbon group that may have suitable substituents, and the radicals R5 and R6 may form a ring that may be 4-20-membered, saturated or unsaturated, alicyclic or heteroalicyclic and may have suitable substituents, and X¯ stands for an anion. The invention also relates to a method for preparing said compounds, and to the use of said compounds in metal complexes that can be used as catalysts in organic synthesis.
Abstract:
Die vorliegende Erfindung betrifft eine monosubstituierte Phosphinsäure sowie deren Einsatz als Regler in radikalischen Polymerisationen. Solche Regler führen nicht zur Bildung von schlechtlöslichen Salzen, ferner weisen sich die durch den erfindungsgemässen Regler hergestellten Polymere durch einen einheitlichen Polymerisationsgrad mit einer engen Grössenverteilung aus. Zusätzlich betrifft die Erfindung ein Verfahren zur Herstellung solcher monosubstituierten Phosphinsäuren.
Abstract:
A compound of formula (I): wherein: R P1 and R P2 are independently selected from C 3-12 alkyl groups; R C is a C 5-6 aryl group, optionally substituted by one or more groups selected from: C 1-7 alkyl, C 1-7 alkoxy, halo, NH 2 , C 1-7 alkylamino, di-C 1-7 alkylamino, and C 5-6 aryl; R A1 and R A2 are independently selected from H, Cl, and an optionally substituted group selected from: C 1-7 alkyl, C 1-7 alkoxy, C 1-7 alkylthio and C 5-6 aryl, wherein the optional substituents are selected from: C 1-7 alkyl, C 1-7 alkoxy, halo, NH 2 , C 1-7 alkylamino, di-C 1-7 alkylamino, and C 5-6 aryl.