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• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F132/00—Homopolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
  • C08F132/08—Homopolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
  • C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
  • C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
  • C07F15/0046—Ruthenium compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F2/00—Processes of polymerisation
  • C08F2/36—Polymerisation in solid state
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F4/00—Polymerisation catalysts
  • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
  • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
  • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
  • C08F4/60003—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof the metallic compound containing a multidentate ligand, i.e. a ligand capable of donating two or more pairs of electrons to form a coordinate or ionic bond
  • C08F4/60006—Bidentate ligand
  • C08F4/6001—Neutral ligand
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F4/00—Polymerisation catalysts
  • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
  • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
  • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
  • C08F4/70—Iron group metals, platinum group metals or compounds thereof
  • C08F4/7001—Iron group metals, platinum group metals or compounds thereof the metallic compound containing a multidentate ligand, i.e. a ligand capable of donating two or more pairs of electrons to form a coordinate or ionic bond
  • C08F4/7003—Bidentate ligand
  • C08F4/7019—Monoanionic ligand
  • C08F4/7026—ON
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F2410/00—Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst
  • C08F2410/01—Additive used together with the catalyst, excluding compounds containing Al or B

Definitions

• the present invention relates to a series of metal complexes, their use as (pre)catalysts in the metathesis reaction as well as the process for carrying out the metathesis reaction. More specifically, the present invention relates to a series of organoruthenium compounds which when activated under suitable conditions exhibit improved catalytic activity for a wide range of metathesis reactions. This invention also relates to methods of making these compounds. Accordingly, the compounds of this invention find utility as precatalysts for carrying out a variety of olefin metathesis reactions, including ring-opening metathetic polymerization (ROMP), among others.
• ROMP ring-opening metathetic polymerization
• the third-generation catalysts initiate the metathesis reactions very promptly, whereas, in some metathesis applications, such as mold ROMP polymerization, it is advantageous to use a (pre)catalyst that does not initiate the reaction immediately after adding it to the substrate but only after an appropriate initiation by chemical agents, temperature or light.
• the complexes characterized by delayed initiation are often termed "dormant catalysts" (Monsaert, S.; Vila, A. L; Drozdzak, R.; Van Der Voort, P.; Verpoort, F., Chem. Soc. Rev., 2009, 38, 3360; R. Drozdzak, N. Nishioka, G. Recher, F. Verpoort, Macromol.
• Exemplary "dormant catalysts” are the complexes A-F, as well as the recently obtained P-1 and P-2 (Pietraszuk, C.; Rogalski, S.; Powala, B.; Mitkiewski, M.; Kubicki, M.; Spolnik, G.; Danikiewicz, W.; Wozniak, K.; Pazio, A.; Szadkowska, A.; Kozlowska, A.; Grela, K., Chem. Eur. J, 2012, 18, 6465-6469).
• the mold ROMP polymerization allows obtaining finished articles.
• Dicyclopentadiene is one of the monomers frequently used for the mold polymerization.
• Y is oxygen or sulfur
• L 2 is a neutral ligand
• R j is selected from the group consisting of hydrogen, (C 1 -C 2 o)alkyl, (C 2 -C 2 o)alkenyl, (C 2 -C 20 )alkynyl and (C 6 - Cio)aryl;
• R 2 , R 3 , R 4 and R 5 are the same or different and each independently selected from the group consisting of hydrogen, halogen, (Ci-Cis)alkyl, (Ci-Ci 6 )alkoxy, (Ci-Cis)perfluoroalkyl, (C 3 -C 7 )cycloalkyl, (C 2 -Ci 6 )alkenyl, (C 6 -Ci 4 )aryl, (C 6 -Ci 4 )perfluoroaryl, (C 3 -Ci 2 )heterocyclyl, -OR 6 , -N0 2 , -COOH, -COOR 6 ,
• R 6 and R 7 are the same or different and each independently selected from the group consisting of (Ci-C 6 )alkyl, (Ci-C 6 )perfluoroalkyl, (C 6 -Ci 4 )aryl, (C 6 - C 14 )perfluoroaryl; or wherein
• R 2 , R 3 , R 4 and R 5 taken together with the carbon atoms to which they are attached to form a substituted or unsubstituted, fused (C 4 -C 8 )carbocyclic ring, or a substituted or unsubstituted, fused aromatic ring.
• the compounds of the formula (I) are very stable and can be prepared without any protective atmosphere of inert gas, as well as in the solvents of analytical grade (pro analysi).
• the complexes of the general formula (I) actively catalyze the metathesis reactions carried out in the presence of air.
• the complexes of the general formula (I) actively catalyze the metathesis reactions only after being activated by chemical agents, and they are very hardly susceptible to thermal activation.
• the complexes of the general formula (I) allowed obtaining polydicyclopentadiene via the ROMP-type reaction carried out in the air, the amount of the (pre)catalyst used being significantly lower than that in the case of using classical complexes.
• this amount of the (pre)catalyst is less than half of that in the case of the catalyst G (M. Perring, N. B. Bowden Langmuir, 2008, 24, 10480-10487).
• the (pre)catalyst according to the invention containing two phosphine ligands is more active in the ROMP reaction of polydicyclopentadiene than the structurally similar complex G'.
• the effect of an electron-acceptor substituent on the rate of initiation of a (pre)catalyst was reversed in the case of complexes of the general formula (I) compared to the case of the classical complex of the Hoveyda-Grubbs type (K. Grela, S. Harutyunyan, A. Michrowska, Angew. Chem. Int. Ed. 2002, 41, No. 21).
• the compound of the formula (I) according to this invention is having:
• Y is oxygen
• R j is hydrogen
• R 2 , R 3 , R and R are the same or different and each independently selected from the group consisting of hydrogen, methyl, ethyl and -N0 2 ; f the formula (II):
• a and b are integers from 0 to 5;
• each R s and R 9 may be the same or different and independently of the other selected from the group consisting of hydrogen, halogen, (Ci-C 16 )alkyl, (Ci-C 16 )alkoxy, (Ci-Ci 6 )perfluoroalkyl, (C 3 -C 7 )cycloalkyl, (C 2 - C ls )alkenyl, (C 3 -C 14 )aryl, (C 6 -C 14 )perfluoroaryl, (C 3 -C 12 )heterocyclyl, -OR s , -N0 2 , -COOH, -COOR 6 ,
• R 6 and R 7 are the same or different and each independently selected from the group consisting of (C C 6 )alkyl, (CVCgJperfluoroalkyl, (C 3 -C 14 )aryl, (C 6 - C 14 )perfluoroaryl.
• the compound of the formula (I) according to this invention is having:
• Y is oxygen
• R 2 , R 3 , R 4 and R 5 are the same or different and each independently selected from the group consisting of hydrogen, methyl, ethyl and -N0 2 ;
• L 2 is an N-heterocyclic carbene ligand of the formula (IMA) or (NIB):
• Rio and Rn are the same or different and each independently selected from the group consisting of (Ci- C 12 )alkyl, (C 3 -C 12 )cycloalkyl, (C 2 -C 12 )alkenyl and substituted or unsubstituted (C 6 -Ci 4) aryl;
• R 12 R 13 , R 14 and R 15 are the same or different and each independently selected from the group consisting of hydrogen, (C C 12 )alkyl, (C 3 -C 12 )cycloalkyl, (C 2 -C 12 )alkenyl, (C 6 -C 14 )aryl, optionally substituted with at least one of (C C 6 )alkyl, (Ci- Jperhaloalkyl, (CpCgJalkoxy or halogen; or
• R 12 , R I3 , R m , R 15 may optionally join together with the carbon atoms to which they are attached to form a substituted or unsubstituted, fused (C 4 -C 8 )carbocyclic ring, or a substituted or unsubstituted, fused aromatic ring.
• the compound of the formula (I) according to this invention is having:
• N-heterocyclic carbene compounds can be used as l_ 2 ligands.
• Non-liming examples of such N-heterocyclic compounds are selected from the group consisting of: pyridine, 4-(N, N- dimethylamino)pyridine, 3-bromopyridine, piperidine, morpholine, pyridazine, pyrimidine, pyrazine, piperazine, 1,2,3-triazole, 1,3,4-triazole, 1,2,3-triazine as well as 1,2,4-triazine.
• the compound of the formula (I) according to this invention is having:
• L 2 selected from the group consisting of:
• the invention is related also to use of the compounds of the general formula (I) as defined hereinabove as (pre)catalysts in the metathesis reactions.
• the compounds of the general formula (I) are used as (pre)catalysts in the reactions of ring-closing metathesis, cross metathesis, homometathesis, alkene-alkyne type metathesis.
• the compounds of the general formula (I) are used as (pre)catalysts in the reaction of ring-opening metathetic polymerization.
• the invention concerns also a process for carrying out the metathesis reaction of olefins, wherein at least one olefin is contacted with a compound of the general formula (I) as a (pre)catalyst.
• the metathesis reaction is carried out in an organic solvent.
• organic solvents that would allow such polymerization reaction to be carried out can be used.
• organic solvents include dichloromethane, dichloroethane, toluene, ethyl acetate and mixtures in any combination thereof.
• the metathesis reaction is carried out without any solvent.
• the metathesis reaction is carried out in the presence of a chemical activator.
• the chemical activator is a Bronsted or Lewis acid or a halo-derivative of alkane or silane.
• Non-limiting examples of such activators include hydrogen chloride, chlorotrimethylsilane or p-toluenesulfonic acid.
• the metathesis reaction is a ring-opening metathetic polymerization of dicyclopentadiene.
• the (pre)catalyst of the general formula (I) is added in the solid form to dicyclopentadiene.
• the polymerization reaction is initiated by heating the mixture of dicyclopentadiene and the (pre)catalyst of the general formula (I) to a temperature of 30 e C. or higher.
• the starting material contains at least 94 wt. % of dicyclopentadiene.
• the metathesis reaction is carried out at a temperature of from 20 to 120 Q C. In yet another embodiment, the metathesis reaction is carried out in a period of from 1 minute to 24 hours.
• the metathesis reaction is carried out in the presence of an additive promoting formation of cross bonds.
• the metathesis reaction is carried out using the amount of the (pre)catalyst equal to or less than 1000 ppm.
• the "(pre)catalyst” term is used to indicate that the compound according to the invention may be either the catalyst itself or a precursor of the active species being the actual catalyst.
• halo or halogen represents an element selected from F, Cl, Br, I.
• alkyl concerns a saturated, straight-chain or branched-chain hydrocarbon substituent having the specified number of carbon atoms.
• the non-limiting examples of alkyls are: methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, pentyl.
• alkoxy concerns the alkyl substituent, as defined above, bound via an oxygen atom.
• perfluoroalkyl represents the alkyl, as defined above, wherein all hydrogens have been replaced with halogen atoms, where the halogen atoms may be identical or different.
• cycloalkyl concerns a saturated mono- or polycyclic hydrocarbon substituent having the specified number of carbon atoms.
• the non-limiting examples of a cycloalkyl substituent are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl.
• alkenyl concerns a non-cyclic, straight or branched hydrocarbon chain having the specified number of carbon atoms and containing at least one carbon-carbon double bond.
• alkenyls are: vinyl, allyl, 1-butenyl, 2-butenyl.
• aryl concerns an aromatic mono- or polycyclic hydrocarbon substituent having the specified number of carbon atoms.
• aryl is: phenyl, mesityl, anthracenyl.
• heterocyclyl concerns aromatic as well as non-aromatic cyclic substituents having the specified number of carbon atoms, wherein one or more carbon atoms have been replaced with a heteroatom such as nitrogen, phosphorus, sulfur, oxygen, provided that there are no two directly connected oxygen or sulphur atoms in the ring.
• Non-aromatic heterocyclyls can contain from 4 to 10 atoms in the ring, whereas aromatic heterocyclyls must have at least 5 atoms in the ring.
• the benzo- fused systems also belong to heterocyclyls.
• non-aromatic heterocyclyls are: pyrrolidinyl, tetrahydrofuranyl, dihydrofuranyl, tetrahydrothienyl, tetrahydropyranyl, dihydropyranyl, tetrahydrothiopyranyl, piperidinyl, morpholinyl, thiomorpholinyl, 2-pyrrol inyl, indolinyl.
• aromatic heterocyclyls are: pyridinyl, imidazolyl, pyrimidinyl, pyrazolyl, triazolyl, pyrazinyl, furyl, thienyl.
• the above-mentioned groups may be bound via a carbon atom or a nitrogen atom.
• the substituent obtained by binding pyrrole may be either pyrrol-l-yl (N- bound) or pyrrol-3-yl (C-bound).
• neutral ligand concerns a substituent having no electrical charge, capable of co-ordinating to a ruthenium atom.
• the non-limiting examples of such ligands are: N-heterocyclic carbene ligands, amines, imines, phosphines and oxides thereof, alkyl and aryl phosphites and phosphates, ethers, alkyl and aryl sulfides, co-ordinated hydrocarbons, haloalkanes and haloarenes.
• neutral ligand encompasses also N-heterocyclic compounds; their non-limiting examples are: pyridine, 4-(N,N- dimethylamino)pyridine (DMAP), 3-bromopyridine, piperidine, morpholine, pyridazine, pyrimidine, pyrazine, piperazine, 1,2,3-triazole, 1,3,4-triazole, 1,2,3-triazine and 1,2,4-triazine.
• DMAP dimethylaminopyridine
• anionic ligand concerns the substituent capable to co-ordination with a metal center, bearing an electrical charge capable to compensate the charge of the metal center, wherein such a compensation may be complete or partial.
• anionic ligands are: fluoride, chloride, bromide or iodide anions, carboxylic acid anions, alcohol and phenol anions, thiol and thiophenol anions, (organo)sulfuric and (organo)phosphoric acid anions as well as anions of esters thereof.
• bidentate anionic ligand means that the neutral ligands U is bound together with anionic ligand, X, resulting in the formation of bidentate ligands.
• various bidentate ligands are also possible with the combination of X and l ⁇ .
• multidentate ligands are: a bidentate ligand (X -L ), a tridentate ligand (X 1 -L 1 -L 2 ).
• the non-limiting examples of such ligands are: anion of 2-hydroxyacetophenone, anion of acetylacetone and aryliminoaryloxy group as described hereinabove.
• carbene concerns a molecule containing a neutral carbon atom having the valence number of 2 and two non-paired valence electrons.
• the term “carbene” encompasses also carbene analogues, wherein the carbon atom is replaced with another chemical element such as: boron, silicon, nitrogen, phosphorus, sulfur.
• the term “carbene” relates particularly to N-heterocyclic carbene (N HC) ligands.
• N HC N-heterocyclic carbene
• non-limiting examples of preferred agents promoting formation of cross bonds are tert-butyl peroxide, di-tert-butyl peroxide, and also mixtures thereof.
• DCPD contains 6% m/m tricyclopentadiene (TCPD), tricyclohexylphosphine, solution of lithium bis(trimethylsilyl)amide, solution of potassium tert-pentoxide, hydrogen chloride solution in THF are commercially available.
• Compounds 1-7 were prepared according to literature procedures. All reactions were carried out under argon. The toluene was washed with citric acid, water, dried with 4A molecular sieves and deoxidized with argon. The THF was dried with 4A molecular sieves and deoxidized with argon.
• Example 1 Solution of lithium bis(trimethylsilyl)amide in toluene (1 M, 12.4 ml_, 1.1 eq) was added to the suspension of salt 1 (5.11 g, 1.15 eq) in toluene (82 mL). Resulted mixture was stirred at room temperature for 30 min and then placed in oil bath at temperature of 80 °C. After 10 min lnd.0 (10.0 g, 11.3 mmol, 1 eq, C
• Reaction mixture was stirred at 80 °C for 90 min, then cooled down to room temperature and filtered through a short pad of silica gel (eluent: toluene). Crude product was purified by crystallization and recrystallization from dichloromethane/n-heptane mixture, green solid, 4.2 g, 46% yield.
• Reaction mixture was stirred at 80 °C for 90 min, then cooled down to room temperature and filtered through a short pad of silica gel (eluent: toluene). Crude product was purified by crystallization and double recrystallization from dichloromethane/methanol mixture, dark green solid, 3.5g, 39% yield.
• Formulation A 5 mL of DCPD (6% m/m TCPD), LatMet-PCy 3 (1.228 mg, 40 ppm in 50 pL of dry toluene).
• Formulation B 5 mL of DCPD (6% m/m TCPD), hydrogen chloride solution in THF (0.75 M, 40 pL, 800 ppm).
• Formulation B was added to Formulation A, results:
• Formulation A 5 mL of DCPD (6% m/m TCPD), lc (1.176 mg, 40 ppm in 50 pL of dry toluene).
• Formulation B 5 mL of DCPD (6% m/m TCPD), hydrogen chloride solution in TH F (0.75 M, 60 pL, 1200 ppm).
• Formulation B was added to Formulation A, results:

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