wherein Y 1 to Y 4 each independently represent any one of the following groups:
in which R α represents a hydrogen atom or a monovalent hydrocarbon group; P 1 represents a group of atoms necessary for forming a heterocyclic ring together with Y 1 and the two carbon atoms adjacent to Y 1 ; P 2 represents a group of atoms necessary for forming a heterocyclic ring together with Y 2 and the two carbon atoms adjacent to Y 2 ; P 3 represents a group of atoms necessary for forming a heterocyclic ring together with Y 3 and the two carbon atoms adjacent to Y 3 ; P 4 represents a group of atoms necessary for forming a heterocyclic ring together with Y 4 and the two carbon atoms adjacent to Y 4 ; P 5 represents a group of atoms necessary for forming a cyclic skeleton together with the carbon atom to which Z 1 bonds and the two carbon atoms adjacent to the carbon atom to which Z 1 bonds; P 6 represents a group of atoms necessary for forming a cyclic skeleton together with the carbon atom to which Z 2 bonds and the two carbon atoms adjacent to the carbon atom to which Z 2 bonds; P 1 and P 2 , P 2 and P 6 , P 6 and P 4 , P 4 and P 3 , P 3 and P 5 , and P 5 and P 1 may further combine with each other to form a ring; Q 1 and Q 2 each independently represent a connecting group or a direct binding; and Z 1 and Z 2 each independently represent any one of the following groups;
- NR β 2 , - OR β , - SR β , - PR β 2
in which R β represents a hydrogen atom or a monovalent hydrocarbon group, and when plural R β s are present, these plural R β s may be the same or different from each other.
摘要翻译:由式(1)表示的化合物:其中Y 1至Y 4各自独立地表示以下基团中的任一个:其中R±表示氢原子或一价烃基; P 1表示与Y 1和与Y 1相邻的两个碳原子一起形成杂环所需的一组原子; P 2表示与Y 2和与Y 2相邻的两个碳原子一起形成杂环所需的一组原子; P 3表示与Y 3和与Y 3相邻的两个碳原子一起形成杂环所需的一组原子; P 4表示与Y 4和与Y 4相邻的两个碳原子一起形成杂环所需的一组原子; P 5表示与Z 1键合的碳原子和与Z 1键合的碳原子相邻的两个碳原子一起形成环状骨架所需的原子团。 P 6表示与Z 2键合的碳原子和与Z 2键合的碳原子相邻的两个碳原子一起形成环状骨架所需的一组原子团; P 1和P 2,P 2和P 6,P 6和P 4,P 4和P 3,P 3和P 5,P 5和P 1可以进一步彼此结合形成环; Q 1和Q 2各自独立地表示连接基团或直接键合; Z 1和Z 2各自独立地表示以下基团中的任一个; €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-NR 2, - OR 2, - SR 2, - PR 2其中R 2表示氢原子或一价烃基,当多个 R 2存在,这些多个R 2可以彼此相同或不同。
摘要:
The invention relates to a nickel complexing compound of the general formula (I), wherein: R1 denotes an anionic carbon ligand, preferably allyl, substituted allyl, methallyl, benzyl, or substituted benzyl; R2-R21, which can be identical or different, denote hydrogen, C1-C10-alkyl, C1-C10-alkoxy, C6-C10-aryl, C6-C10-aryloxy, C2-C10-acyloxy, carboxy, C2-C10-carboxyalkyl, carbamido, carbamido-mono-C1-C10-alkyl, carbamido-di-C1-C10-alkyl, hydroxy, halogen, nitro, and cyano, wherein said alkyl- and/or aryl residues can be singly or multiply substituted, preferably one to three times, with hydroxy, halogen, alkoxy, and/or oxo, and wherein each of two adjacent residues R2-R21 can implement a four to eight link cycloaliphatic ring or an annellated aromatic ring or an annellated aromatic ring system, which can be substituted once or multiple times, preferably one to three times, with hydroxy, halogen, alkoxy, and/or oxo, and wherein each of the residues R2 and R7, R16 and R17 can denote a bridging C1-C2-alkylene chain, which can be substituted with oxo; n denotes an integer from 1 to 3; Zn- denotes a non-coordinating complex anion.
摘要:
Methods for carbon-sulfur (C S) or carbon-oxygen (C-O) coupling reactions are provided. The methods involve the use of a transition metal complex comprising a heterocyclic carbene ligand complexed with a transition metal. Transition metal complexes comprising a heterocyclic carbene ligand complexed with nickel are also provided. The nickel heterocylic carbene complexes may be used for C-S or C-O coupling reactions.
摘要:
The invention is directed towards a composition comprising the formula LMX(X')n wherein n equals 0 or 1; X and X' are independently selected from the group consisting of halides, hydride, triflate, acetates, borates, C1 through C12 alkyl, C1 through C12 alkoxy, C3 through C12 cycloalkyl, C3 through C12 cycloalkoxy, aryl, thiolates, carbon monoxide, cyanate, olefins, and any other moiety into which a monomer can insert; M is selected from the group consisting of nickel, palladium, and platinum and L is a nitrogen-containing bidentate ligand with more than two nitrogen atoms. The composition possesses a tetrahedral or pseudo-tetrahedral structure. The invention also provides a method for using the composition in conjunction with an activating cocatalyst to form short chain α-olefins.
摘要:
A series of soluble a-diimine late transition metal catalysts has been invented comprising a substituted or unsubstituted catecholate ligand. The catalysts demonstrate high activity and selectivity for linear a-olefins. As such, these catalysts conveniently oligomerize ethylene. Typical activators as known to those of ordinary skill in the art are used to activate these transition metal catalysts. These catalysts can be used in a supported or unsupported form.