摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Polyarylverbindungen durch Kupplung von Arylhalogeniden oder Arylsulfonaten und reaktiven Arylverbindungen in Gegenwart von neuartigen Übergangsmetallkomplexen N-heterocyclischer Carbene, die ebenso wie die N-heterocyclischen Carbene selbst und die Salze, von denen sie sich ableiten, Bestandteil der Erfindung sind.
摘要翻译:N-杂环卡宾化合物(I)及其酸式盐是新的。 式(1)的N-杂环卡宾化合物及其式(2)的酸式盐是新的; Z = 1,2-乙二基或1,2-乙二基; R 1,R 2 = CR 5 R 6 R 7; R 5 -R 7 = H或有机基团或与C一起形成任选取代的碳(多)环或杂(多)环基,其中R 5 -R 7为 sec。 或quat。 碳原子或两个为仲,叔或四价。 碳原子,当两个为秒时。 至少1-2个是叔碳原子。 或quat。 C原子; R 3,R 4 = H,6-12C芳基,芳烷基或1-8C烷基; An =酸的阴离子。 还包括独立权利要求:(1)含有至少一个N-杂环卡宾化合物(I)作为配体的镍 - ,钯 - 和铂络合物(II) (2)制备式(3)的络合物(II)的方法,包括使式(4)的配合物与N-杂环卡宾化合物(I)在溶剂中反应; (3)制备聚芳基化合物(III)的方法,包括在催化剂络合物(II)的存在下使芳基卤化物或芳基磺酸盐与活性芳基化合物反应。 (Pd(L)2)(3)(Pd(P)2)(4)L = N-杂环卡宾化合物(I); P =单齿膦膦配体。
摘要:
The invention relates to complex compounds of general formula (I), wherein M is an element of the groups 6 to 10 of the periodic system of the elements, preferably Ni. The invention also relates to a method for producing said complex compounds and to their use for polymerising and copolymerising olefins, for example in suspension polymerisation methods, gas phase polymerisation methods, mass polymerisation methods or emulsion polymerisation methods.
摘要:
Transition metal imine complexes can be prepared by reacting the imine precursors, a carbonyl compound and a primary amine, in the presence of a selected transition metal compound. The complexes may be used as catalysts for olefin polymerization.
摘要:
Various olefins may be polymerized using a catalyst system containing selected α-diimine, urethane or urea ligands, some of them novel, complexed to nickel, palladium or other selected transition metals. The polymers are useful as molding resins and elastomers.
摘要:
Transition metal imine complexes can be prepared by reacting the imine precursors, a carbonyl compound and a primary amine, in the presence of a selected transition metal compound. The complexes may be used as catalysts for olefin polymerization.
摘要:
The invention concerns a method for immobilising and/or crystallising macromolecules, chemical reagents used in said method, resulting products and uses of said products in the field of materials and structural biology, in particular as biosensors or as biomaterials. Said method essentially consists in incubating, without stirring, for at least 15 minutes, a biological macromolecule in solution with carbon nanotubes closed at their ends, in suitable temperature and pH conditions.
摘要:
Methodologies for the synthesis, screening and characterisation of organometallic compounds and catalysts (eg homogenous catalysts), including combinatorial synthesis, screening and characterisation of libraries of supported and unsupported organometallic compounds and catalysts (eg homogenous catalysts). The methods can be applied to the preparation and screening of large numbers of organometallic compounds which can be used not only as catalysts (eg homogeneous catalysts), but also as additives and therapeutic agents.