摘要:
The invention relates to a complex of ruthenium of the structural formula I, where X1 and X2 are identical or different and are each an anionic ligand, R1 and R2 are identical or different and can also contain a ring, and R1 and R2 are each hydrogen or/and a hydrocarbon group, the ligand L1 is an N-heterocyclic carbene and the ligand L2 is an uncharged electron donor, in particular an N-heterocyclic carbene or an amine, imine, phosphine, phosphate, stibine, arsine, carbonyl compound, carboxyl compound, nitrile, alcohol, ether, thiol or thioether, where R1, R2, R3 and R4 are hydrogen or/and hydrocarbon groups. The invention further relates to a process for preparing acyclic olefins having two or more carbon atoms or/and cyclic olefins having four or more carbon atoms from acyclic olefins having two or more carbon atoms or/and from cyclic olefins having four or more carbon atoms by an olefin metathesis reaction in the presence of at least one catalyst, wherein a complex is used as catalyst and R′1, R′2, R′3 and R′4 are hydrogen or/and hydrocarbon groups.
摘要:
Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands and their use as highly active, selective catalysts for olefin metathesisThe invention relates to a complex of ruthenium of the structural formula I, where X1 and X2 are identical or different and are each an anionic ligand, R1 and R2 are identical or different and can also contain a ring, and R1 and R2 are each hydrogen or/and a hydrocarbon group, the ligand L1 is an N-heterocyclic carbene and the ligand L2 is an uncharged electron donor, in particular an N-heterocyclic carbene or an amine, imine, phosphine, phosphite, stibine, arsine, carbonyl compound, carboxyl compound, nitrile, alcohol, ether, thiol or thioether, where R1, R2, R3 and R4 are hydrogen or/and hydrocarbon groups. The invention further relates to a process for preparing acyclic olefins having two or more carbon atoms or/and cyclic olefins having four or more carbon atoms from acyclic olefins having two or more carbon atoms or/and from cyclic olefins having four or more carbon atoms by an olefin metathesis reaction in the presence of at least one catalyst, wherein a complex is used as catalyst and R′1, R′2, R′3 and R′4 are hydrogen or/and hydrocarbon groups.
摘要:
A palladacycle of the formula (I) ##STR1## where: R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are, independently of one another, hydrogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkoxy, fluorine, NH.sub.2, NH-alkyl(C.sub.1 -C.sub.4), N(alkyl).sub.2 -(C.sub.1 -C.sub.4), CO.sub.2 -(C.sub.1 -C.sub.4)alkyl, OCO-alkyl-(C.sub.1 -C.sub.4), or phenyl, R.sup.7 and R.sup.8 are, independently of one another, (C.sub.1 -C.sub.8)-alkyl, (C.sub.3 -C.sub.12)-cyloalkyl, substituted or unsubstituted aryl or where R.sup.1, and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6 together form an aliphatic or aromatic ring, and Y is an anion of an inorganic or organic acid.
摘要:
The present invention relates to a process for the preparation of organorhenium oxides from rhenium-containing compounds, where the rhenium-containing compound is reacted with a silylating agent and organylating reagent, and the rhenium-containing compound originates in particular from the residue from a spent organorhenium oxide catalyst or rhenium oxide catalyst.
摘要:
The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## wherein a palladium compound of the formula (IV) ##STR2## is used as a catalyst in the preparation of the compounds of the formula (I).
摘要:
The present invention relates to a process for the preparation of aromatic amines of the formula (I) Ar--NR.sup.1 R.sup.2 (I) in which Ar is ##STR1## and R.sup.3 to R.sup.9 independently of one another are hydrogen, C.sub.1 -C.sub.8 -alkyl, alkoxy-(C.sub.1 -C.sub.8), acyloxy-(C.sub.1 -C.sub.8), OAr, Ar, fluorine, chlorine, bromine, iodine, OH, NO.sub.2, CN, CO.sub.2 H, CHO, SO.sub.3 H, SO.sub.2 R, SOR, NH.sub.2, NH-alkyl-(C.sub.1 -C.sub.12), N-alkyl.sub.2 -(C.sub.1 -C.sub.12), NHCO-alkyl-(C.sub.1 -C.sub.12), CO-alkyl-(C.sub.1 -C.sub.12), NHCHO, COAr, CO.sub.2 Ar, CF.sub.3, CONH.sub.2, CHCHCO.sub.2 R, POAr.sub.2, PO-alkyl.sub.2 -(C.sub.1 -C.sub.12), 5-ring heteroaryl, 6-ring heteroaryl, Si-alkyl.sub.3 -(C.sub.1 -C.sub.12), where R=alkyl(C.sub.1 -C.sub.8), aryl(C.sub.5 -C.sub.10) and R.sup.1 and R.sup.2 independently of one another are hydrogen, C.sub.1 -C.sub.12 -alkyl, Ar as defined above, 5-ring heteroaryl, 6-ring heteroaryl, by reacting chloroaromatics of the formula II Ar--Cl (II) with ammonia or primary or secondary amines of the formula III R.sup.1 R.sup.2 NH (III) in which Ar and R.sup.1 and R.sup.2 are as defined above, which comprises reacting the starting materials in the presence of a palladium catalyst, a strong base and a halide cocatalyst in an inert solvent at temperatures of 80.degree.-200.degree. C.
摘要:
The invention relates to an organometallic compound of the formula I ##STR1## where M is chromium, molybdenum or tungsten, L is a cyclopentadienyl ligand, T is a bridge, A is a cyclopentadienyl ligand or an electron donor and R.sup.1 are, independently of one another, identical or different C.sub.1 -C.sub.20 -hydrocarbon radicals or hydrogen. The organometallic compound is suitable as a catalyst component for olefin polymerization.
摘要:
A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## where M.sup.1 =Zr or Hf, R.sup.1 and R.sup.2 =(C.sub.1 -C.sub.3)-alkyl or chlorine, R.sup.3, with the proviso that at least one of the radicals R.sup.3 is not hydrogen, =hydrogen, F, Cl, --OR.sup.7, --NR.sup.7 R.sup.8, --P(O)R.sup.7 R.sup.8, --P(OR.sup.7).sub.2 or SR.sup.7, R.sup.4 is a ##STR2##
摘要翻译:用于烯烃聚合的高效催化剂体系包括助催化剂,优选铝氧烷和式I的茂金属,其中M1 = Zr或Hf,R1和R2 =(C1-C3) - 烷基或氯,R3 条件是至少一个基团R 3不是氢,=氢,F,Cl,-OR 7,-NR 7 R 8,-P(O)R 7 R 8,-P(OR 7)2或SR 7,R 4是
摘要:
The invention relates to a complex of ruthenium of the structural formula I, where X1 and X2 are identical or different and are each an anionic ligand, R1 and R2 are identical or different and can also contain a ring, and R1 and R2 are each hydrogen or/and a hydrocarbon group, the ligand L1 is an N-heterocyclic carbene and the ligand L2 is an uncharged electron donor, in particular an N-heterocyclic carbene or an amine, imine, phosphine, phosphate, stibine, arsine, carbonyl compound, carboxyl compound, nitrile, alcohol, ether, thiol or thioether, where R1, R2, R3 and R4 are hydrogen or/and hydrocarbon groups. The invention further relates to a process for preparing acyclic olefins having two or more carbon atoms or/and cyclic olefins having four or more carbon atoms from acyclic olefins having two or more carbon atoms or/and from cyclic olefins having four or more carbon atoms by an olefin metathesis reaction in the presence of at least one catalyst, wherein a complex is used as catalyst and R′1, R′2, R′3 and R′4 are hydrogen or/and hydrocarbon groups.
摘要:
The invention relates to complexes of ruthenium of the structural formula I where X is an anionic ligand, Z is a monodentate to tridentate ligand which contains a metal and is nonionically bound to the ruthenium center, R1 and R2 are identical or different and are each hydrogen or/and a hydrocarbon group, but may also form a ring, and Ligand L is an N-heterocyclic carbene, and also to a process for preparing acyclic olefins having two or more carbon atoms or/and cyclic olefins having three or more carbon atoms and the use of at least one complex of the formula I in olefin metathesis.