摘要:
The invention relates to the bisphosphites of the general formula(I), wherein R?1, R2, R3, R4, R5, R6¿ represent H, an aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aliphatic-aromatic hydrocarbon group with 1 to 50 carbon atoms, F, Cl, Br, I, -OR?7, -COR7 -CO¿2R7, -CO2M, -SR7, -SO2R?7, -SOR7, -SO¿3R7, -SO3M, -SO2NR?7R8, NR7R8, N=CR7R8, NH¿2, wherein R1 to R6 are the same or different and can be covalently linked with each other, R7, R8 represent H, a substituted or unsubstituted, aliphatic or aromatic hydrocarbon group with 1 to 25 carbon atoms, which are the same or different, M represents an alkali metal, alkaline earth metal, ammonium, phosphonium ion; Q represents a bivalent, aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aliphatic-aromatic hydrocarbon group with 1 to 50 carbon atoms, W, X represent aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aliphatic-aromatic hydrocarbon groups with 1 to 50 carbon atoms, which are the same or different or which are covalently linked with each other. The invention further relates to the metal complexes of said bisphosphites and to the use thereof in hydroformylation reactions.
摘要:
A phosphorus ester oligomer having structure (I) wherein A can be the same or different in each monomeric unit and each is independently selected from the group consisting of oxygen, sulfur, lower alkyl, alkyl- or aryl-substituted amino and aminoalkyl; B1 and B2 can be the same or different and each is independently selected from hydrogen, lower alkyl, a labelling group, a protecting group, a phosphoramidate or a phosphomonoester; R1 can be the same or different in each monomeric unit, and in at least one of the non-nucleotide monomeric units, R1 is independently selected from the group consisting of a condensation product of (i) a non-vicinal diol attached to a hydrogen bond donor functionality; (ii) a hydrogen bond acceptor selected from an ether, a purine or pyrimidine substituted 1,2-diol or a disubstituted heterocycle; (iii) a non-vicinal diol attached to a hydrophobic functionality or a vicinal diol attached to an aliphatic or alicyclic hydrophobic functionality; (iv) a diol attached to a ring substituted anionic functionality and (v) a cationic moiety attached to a non-vicinal or alicyclic diol, any of which can further include a detectable label, and n is at least one. Preferred R1 moieties include condensation products of heterocyclic diols, alicyclic diols, and polycyclic diols. Also the non-nucleotide monomers thereof, combinatorial library mixtures of the oligomers and the use of the oligomers as selective target-binding compounds.
摘要:
Compounds of general formula (I) or salts thereof, useful as ligands to inositol 1,4,5-trisphosphate (IP3) receptor, wherein R is a group represented by general formula (A), (B) or (C) (wherein R and R are each independently C1-6 alkyl; R is amino, mono(C1-6 alkyl)amino, di(C1-6 alkyl)amino, or C1-6 alkoxy; and X is an anion); and n is an integer of 2 to 5.
摘要:
A compound represented by the general formula (I) or a salt thereof, wherein R represents a group represented by the following formula (A), (B) or (C) wherein R 1 and R 2 independently represent a C 1-6 alkyl group, R 3 represents an amino group, a mono(C 1-6 alkyl)amino group, a di(C 1-6 alkyl)amino group or a C 1-6 alkoxy group and X-represents an anion, and n represents an integer of 2 to 5. The compound or a salt is useful as a ligand of inositol-1,4,5-trisphosphate (IP 3 ) receptor.
摘要:
The invention provides a method for separating one or more triorganophosphite components from a crude phosphite mixture containing acidic hydrolysis products, the method comprising: contacting said crude phosphite mixture with a basic additive to produce a second mixture comprising a first phase and a second phase, wherein said first phase comprises the basic additive and one or more components independently selected from the group consisting of (R 2 O)(R 3 O)POH, (R 1 O)(HO)PO(H) and H 3 PO 3 , wherein R 1 , R 2 R 3 are independently selected from the group consisting of C 1 to C 18 alkyl, C 6 to C 18 aryl and hydroxyaryl, and C 3 to C 18 cycloalkyl and hydroxyalkyl radicals, and wherein R 2 and R 3 can optionally be connected to each other directly by a chemical bond or through an intermediate divalent group R 9 ; and said second phase comprises one or more triorganophosphite components independently selected from the group consisting of (R 4 O)(R 5 O)P(OR 6 ) and ((R 7 O)(R 8 O)PO) n A, wherein R 4 , R 5 , R 6 , R 7 and R 8 are independently selected from the group consisting of C 1 to C 18 alkyl, C 6 to C 18 aryl and C 3 to C 18 cycloalkyl radicals, wherein each of R 4 , R 5 and R 6 can optionally be connected to one or both of the other two directly by a chemical bond or through an intermediate divalent group R 10 , wherein R 7 and R 8 can optionally be connected to each other directly by a chemical bond or through an intermediate divalent group R 11 , wherein A is an optionally substituted or unsubstituted aliphatic, aromatic or heteroaromatic radical, and wherein n is an integer greater than 1; and R 9 , R 10 , and R 11 are independently selected from the group consisting of -O-, -S-, and -CH(R 12 )-, wherein R 12 is selected from the group consisting of H, C 6 to C 18 aryl, and C 1 to C 18 alkyl.
摘要:
The invention relates to a synergistic mixture comprising: a) at least one compound selected from the group consisting of the phosphites of the formula (I) to (V), of the phosphonites of the formulae (VI) to (IX) and (XV), of the di/oligophosphonites of the formulae (X) and (XI) and of the phosphinites of the formulae (XII) to (XIV); and b) at least one compound selected from the group consisting of the phosphanes of the formula (XVI), the di/oligophosphanes of the formulae (XVII) and (XVIII), and of the cyclophosphanes of the formula (XIX),and also to a process for stabilizing polymers with respect to thermooxidative degradation by addition and incorporation of a synergistic mixture of this type.
摘要:
Improved liquid phase process useful in the hydrocyanation of diolefinic compounds to produce nonconjugated acyclic nitriles and to the liquid phase process of isomerization of the nitriles to, among other thing, 3- and/or 4-monoalkene linear nitriles. The improvement involves conducting the process in the presence of zero-valent nickel and a mutidentate phosphite ligand.