CN102558241A - Preparation of 1,10-phenanthroline complex substituted by propionyl group and application of complex used as catalyst - Google Patents
Preparation of 1,10-phenanthroline complex substituted by propionyl group and application of complex used as catalyst Download PDFInfo
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Abstract
The invention provides a preparation method of chloridized 2-n-propionyl-1,10-phenanthroline (amine) Fe (II) complex shown in formula (I) and application of the complex used as an ethylene oligomerization catalyst. The variables in formula (I) are defined in instruction. The method comprises the following steps: firstly, 2-n-propionyl-1,10-phenanthorine is prepared from 1,10-phenanthorine and raw material tri-n-propylaluminium by hydrolysis and oxidizing reaction with nitrobenzene. Secondly, 2-n-propionyl-1,10-phenanthroline (amine) ligand is obtained from 2-n-propionyl-1, 10-phenanthorine and the substituted aniline by condensation. Thirdly, a targeting product is obtained by the reaction of ligand with ferrous chloride. The synthetic method has the advantages that the method has few steps and simple process, is low in cost, takes non-toxic tri-n-propylaluminium to replace potassium cyanide in the conventional method and has broad prospect in industrialization.
Description
Technical field
The present invention relates to the preparation method of olefin oligomerization catalyst, it is substituted 1 more specifically to relate to positive propionyl group, the 10-phenanthroline preparation method that amine closes iron (II) title complex that contracts, and this title complex of preparation thus is as the application of ethylene oligomerization catalyst.
Background technology
Ethylene oligomerization is one of most important reaction in the olefinic polymerization industry.Through oligomerisation reaction, can the small-numerator olefin of cheapness be transformed into and have high value-added product.Ethylene oligomerization product-linear alpha-alkene (LAO) is important Organic Chemicals.LAO C for example
4-C
30Can be used as emollient component and bore liquid emollient component, softening agent, the various additives of preparation daily cleaning agent, flotation agent, emulsifying agent, refrigerator, additive of low viscosity synthetic oil, polymkeric substance and multipolymer, oil and petroleum products additive, senior alkylamines, senior organo-aluminium compound, senior alkaryl hydrocarbon polymer, high fatty alcohol and lipid acid, epoxide and thermal barrier or the like.At LAO C
20-C
30But also composite adhesives, sealing agent and coating on the basis.In recent years, along with the continuous development of polyolefin industry, the demand to terminal olefin in the world wide increases rapidly.Wherein the terminal olefin of the overwhelming majority is obtained by the ethylene oligomerization preparation.
The used catalyzer of ethylene oligomerization method mainly contains nickel system, chromium system, zirconium system and aluminium system etc., in recent years, and Brookhart group (Brookhart, people such as M, J.Am.Chem.Soc., 1998,120,7143-7144; WO99/02472,1999), Gibson group (Gibson, people such as V.C., Chem.Commun., 1998,849-850; Chem.Eur.J., 2000,2221-2231) find some Fe (II) and Co (II) respectively but the oligomerisation of trident pyridinimine title complex catalyzed ethylene, not only the catalytic activity of catalyzer is very high, and the selectivity of terminal olefin is also very high.Therefore this type title complex has very strong prospects for commercial application.And for this type Fe (II) and Co (II) composition catalyst, key is the synthetic of part, and can this type title complex obtain and cost just depends on the compound method of part.
The Sun Wen of Institute of Chemistry, Academia Sinica China group (people such as Sun Wenhua, Organometallics2006,25,666-677) adopt 1 first, 10-phenanthroline imine compound and Fe (II) coordination obtains three tooth nitrogen imine compositions and comes the catalyzed ethylene oligomerisation.The catalytic activity of such catalyzer and selectivity are all very high.But there is following shortcoming in this Preparation of Catalyst mode: the synthesis step of part is too much, and needs to adopt the Potssium Cyanide of severe toxicity to participate in reaction.Therefore, develop that a kind of synthesis step is few, technology is simple, raw materials cost is low and avoid the use of the method for preparing ethylene oligomerization catalyst that highly toxic substance participates in reaction to reduce the attention that the Preparation of Catalyst cost obtains researchist's height.
Summary of the invention
The object of the present invention is to provide a kind of Application of Catalyst for preparing the novel method of ethylene oligomerization catalyst and prepare thus.
The ethylene oligomerization catalyst of the inventive method preparation is substituted 1 for the positive propionyl group with following general formula (I), and the 10-phenanthroline amine that contracts closes iron (II) title complex:
Each variable-definition in its Chinese style is following:
R
1-R
5Be hydrogen, C independently of one another
1-C
6Alkyl, halogen, C
1-C
6Alkoxyl group or nitro.
In the present invention, term " C
1-C
6Alkyl " refer to the saturated straight chain or the branched hydrocarbyl that contain 1-6 carbon atom.As C
1-C
6Alkyl can be mentioned methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec.-butyl, the tertiary butyl, n-pentyl, isopentyl, sec.-amyl sec-pentyl secondary amyl, n-hexyl and Sec-Hexyl; Special preferable methyl, ethyl, n-propyl and sec.-propyl.
In the present invention, term " C
1-C
6Alkoxyl group " refer to above-mentioned C
1-C
6Alkyl is connected the group that obtains with a Sauerstoffatom.As C
1-C
6Alkoxyl group can be mentioned methoxyl group, oxyethyl group, positive propoxy, isopropoxy, n-butoxy, isobutoxy, sec.-butoxy, tert.-butoxy, n-pentyloxy, secondary pentyloxy, positive hexyloxy and secondary hexyloxy; Preferred especially methoxyl group and oxyethyl group.
In the present invention, term " halogen " refers to fluorine, chlorine, bromine and iodine, preferred especially fluorine, chlorine and bromine.
In a preferred embodiment of the invention, ethylene oligomerization catalyst is R wherein
1-R
5Have general formula (I) compound as giving a definition:
R
1-R
5Be hydrogen, methyl, ethyl, n-propyl, sec.-propyl, fluorine, chlorine, bromine, methoxyl group, oxyethyl group or nitro independently of one another.
In particularly preferred embodiment of the present invention, the R in general formula (I) compound
1And R
5Be ethyl and R
2-R
4Be hydrogen.
The positive propionyl group of general formula of the present invention (I) is substituted 1, and the 10-phenanthroline contracts, and to close the concrete preparation process of iron (II) title complex following for amine:
A.2-positive propionyl group-1,10-phenanthroline synthetic: make 1,10-phenanthroline and tri-n-n-propyl aluminum (n-C
3H
7)
3Al reaction, pass through successively again hydrolysis and with the oxidizing reaction of oil of mirbane, acquisition formula (b) compound.
For the 2-positive propionyl group-1 of preparation formula (b), the 10-phenanthroline at first makes 1,10-phenanthroline and tri-n-n-propyl aluminum (n-C
3H
7)
3Al reacts in the presence of organic solvent.Operable for this reason organic solvent is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE, methylene dichloride or its mixture etc., preferred toluene.Utilize these organic solvents, preparation 1,10-phenanthroline solution, wherein strength of solution is 10～200g/L.This 1, the reaction of 10-phenanthroline and tri-n-n-propyl aluminum under-60～-80 ℃, is preferably carried out under-60～-70 ℃ usually.In addition, this reaction is advantageously carried out under protection of inert gas, preferred argon gas of this rare gas element or nitrogen.1, it is anhydrous 1 that the 10-phenanthroline can use, and the 10-phenanthroline also can use hydration 1, and the 10-phenanthroline is preferred anhydrous 1, the 10-phenanthroline.Tri-n-n-propyl aluminum uses with itself usually.1, the mol ratio of 10-phenanthroline and tri-n-n-propyl aluminum is 1: 0.5～1: 4.5, preferred 1: 2.0～1: 2.6.Advantageously, this reaction usually under temperature of reaction to 1, add tri-n-n-propyl aluminum in the 10-phenanthroline solution, for example drip tri-n-n-propyl aluminum and carry out.Behind reinforced the finishing, under temperature of reaction, stirred preferred 18～20 hours 18～28 hours.Afterwards, reaction mixture was warming up to 20～40 ℃ of restir 5～10 hours, preferred 10 hours, with reaction more fully.Add water (preferred deionized water) then-60～0 ℃ of following hydrolysis.For example, reaction mixture is remained-30 ℃ and add entry and be hydrolyzed, preferably add deionized water and be hydrolyzed.In the hydrolytic process, have bubble to emerge, hydrolysis is till bubble is no longer emerged.For complete hydrolysis more, reaction mixture is warming up to 20～40 ℃ again stirred 5～10 hours.Separatory takes out organic phase then.In order to isolate required product as much as possible, preferably also to the inorganic organic solvent extraction of using mutually, the organic phase that organic phase that obtains and separatory are before obtained merges; Can be ETHYLE ACETATE to this operable organic solvent; Acetone, methylene dichloride or its mixture etc., preferred methylene dichloride.After the decompression of the organic phase of organic phase or merging removed solvent, add oil of mirbane and reflux (for example under 210 ℃) 10～48 hours preferred 15～24 hours.Filter afterwards, solvent is removed in decompression.Using volume ratio is 1: 1～1: 5, and preferred 1: 2 ETHYLE ACETATE: the mixing solutions of sherwood oil is a leacheate, carries out silica gel column chromatography, gets solid product, i.e. formula (b) compound.In this synthesis step, 1, the mol ratio of 10-phenanthroline and oil of mirbane is 1: 0.5～1: 30, preferred 1: 15～1: 20.
B.2-positive propionyl group-1,10-phenanthroline the synthetic of amine ligand that contract: make formula (b) compound and formula (c) compound react acquisition formula (d) compound in the presence of as catalyzer at tosic acid
R wherein
1-R
5Such as mutual-through type (I) definition.
Product part (d) is through making the 2-that in step a, obtains positive propionyl group-1 in container; The substituted aniline of 10-phenanthroline and formula (c); Reaction and preparing in the organic solvent of not moisture and oxygen; 2-positive propionyl group-1 wherein, the mol ratio of the substituted aniline of 10-phenanthroline and formula (c) is 1: 1～1: 5.This operable organic solvent is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE, methylene dichloride or its mixture etc., preferred toluene.This reaction is that catalyzer carries out under refluxing with tosic acid (p-TsOH), for example under 110 ℃, carries out.The mass ratio of the quality of tosic acid and reaction-ure mixture (being formula (b) compound and formula (c) compound) is 0.001: 1～0.02: 1, and the reaction times is 5～10 hours, uses the TLC monitoring reaction; Treat 2-positive propionyl group-1, after the reaction of 10-phenanthroline finished, solvent was removed in decompression; Using volume ratio then is 1: 1～1: 9; Preferred 1: 4 ETHYLE ACETATE: the mixing solutions of sherwood oil is as leacheate, and silica gel column chromatography gets title product, i.e. formula (d) compound.Title product is through nuclear-magnetism and mass spectral characteristi.
In a preferred embodiment of the inventive method, the substituted aniline of formula (c) is by 1-5, preferred 1-4, and more preferably 1-3 identical or different C that is selected from
1-C
6Alkyl, C
1-C
6The substituted aniline of the substituting group of alkoxyl group, halogen and nitro.As an example, can mention 2-aminotoluene, 3-monomethylaniline, 4-monomethylaniline, 23 dimethyl aniline, 2,4-xylidine, 2,5-xylidine, 2; 6-xylidine, 3,4-xylidine, 3,5-xylidine, 2,4-bromo-2; 6-xylidine, 2-MEA, 2-ethyl-6-monomethylaniline, 2-isopropyl aniline, 2,6-Diethyl Aniline, 2,6-diisopropyl aniline, 2-fluoroaniline, 2-fluoro-4-monomethylaniline, 2-fluoro-5-monomethylaniline, 2,4 difluorobenzene amine, 2,5-difluoroaniline, 2; 6-difluoroaniline, 3,4-difluoroaniline, 2,3,4-trifluoromethyl aniline, 2,4; 5-trifluoromethyl aniline, 2,4,6-trifluoromethyl aniline, 2,3,4; 5,6-penta fluoro benzene amine, 3-chloroaniline, 2,6-dichlorphenamide bulk powder, 2,2; 4,5-trichloroaniline, 2,4,6-trichloroaniline, 2-bromaniline, 2-bromo-4-monomethylaniline, 2-bromo-4-fluoroaniline, 4-bromo-2-fluoroaniline, 2; 6-dibromo aniline, 2,6-two bromo-4-monomethylanilines, 2,6-two bromo-4-chloroanilines, 2,4; 6-bromamide, 2-bromo-6-chloro-4-fluoroaniline, 2-bromo-4-chloro-6-fluoroaniline, 2-bromo-4,6-difluoroaniline, 3-N-methyl-p-nitroaniline, 4-anisidine, 2-methyl-4-anisidine and 4-phenetidine, most preferably 2,6-Diethyl Aniline.
C. chlorination 2-positive propionyl group-1, the 10-phenanthroline amine that contracts closes the synthetic of iron (II) title complex: make formula (d) compound and iron protochloride react acquisition formula (I) compound
R wherein
1-R
5Such as mutual-through type (I) definition.
Under protections such as rare gas element such as nitrogen; Iron protochloride is dissolved in the organic solvent of not moisture and oxygen; Form the solution of 0.001～0.1g/ml; Operable for this reason organic solvent is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE, methylene dichloride or its mixture etc., preferred THF.In order to obtain aforementioned solution of ferrous chloride, replace iron protochloride itself, also can use hydration iron protochloride (FeCl
24H
2O).Separately with 2-propionyl group-1; The 10-phenanthroline amine ligand (d) that contracts is dissolved in the organic solvent of not moisture and oxygen; Form the solution of 0.01～0.1g/ml; This operable organic solvent is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE, methylene dichloride or its mixture etc. equally, preferred THF.Under protections such as rare gas element such as nitrogen, merge above-mentioned two solution (for example at room temperature merging), and stirring certain hour under the room temperature under the protections such as rare gas element such as nitrogen, for example stirred overnight under the room temperature then.With the TLC monitoring reaction, after question response finishes, reaction product is carried out aftertreatment through conventional post-treating methods such as suction filtration, washing and dryings, obtain formula (I) compound title complex.Said washing can with an organic solvent be carried out like anhydrous diethyl ether.Title complex characterizes through ultimate analysis and ir spectra.In this synthesis step, 2-positive propionyl group-1,10-phenanthroline part (d) is 1 with the mol ratio of iron protochloride: 1-1.2: 1, be preferably 1.05: 1-1.1: 1.
The 2-positive propionyl group-1 that the inventive method is prepared, the 10-phenanthroline amine that contracts closes iron (II) title complex and can be used as catalyst for oligomerization and be used for olefin oligomerization, is particularly useful in the ethylene oligomerization.This moment, related oligomerisation reaction condition was known to those skilled in the art; For example can use like the method for the pressurization ethylene oligomerization described among the one Chinese patent application publication number CN1850339A and carry out oligomerisation, said document is incorporated this paper by reference into.For example; According to the present invention; Ethylene oligomerization can be performed as follows: in reaction vessel, add organic solvent, promotor and as the prepared 2-of the present invention of Primary Catalysts positive propionyl group-1; The 10-phenanthroline amine that contracts closes iron (II) title complex, is that 0.1-30MPa and temperature of reaction are 20-150 ℃ of reaction 30-100 minute down at ethylene pressure then, obtains the ethylene oligomerization product.Be cooled to then-10-10 ℃, take out a small amount of oligomerization product with in 5% the Hydrogen chloride with laggard promoting the circulation of qi mutually chromatogram (GC) analyze.
In ethylene oligomerization method of the present invention, except above-mentioned Primary Catalysts, also should adopt promotor.Can use as promotor and to be selected from following those: aikyiaiurnirsoxan beta or alkylaluminium cpd etc., preferred aluminium alkoxide compound.As aikyiaiurnirsoxan beta, it can be C
1-C
4Alkylaluminoxane, wherein C
1-C
4Alkyl is a straight or branched.The example of operable aikyiaiurnirsoxan beta comprises MAO, modified methylaluminoxane, ethyl aikyiaiurnirsoxan beta or isobutyl aluminium alkoxide etc., preferable methyl aikyiaiurnirsoxan beta.As alkylaluminium cpd, it can use formula AlR
nX
mExpression, wherein R is straight or branched C independently of one another
1-C
8Alkyl, the X halogen of respectively doing for oneself, preferred chlorine or bromine, n is the number of 1-3, m is that number and the m+n of 0-2 equals 3.The example of operable alkylaluminium cpd comprises trimethylaluminium, triethyl aluminum, tri-propyl aluminum, triisobutyl aluminium, tri-n-hexyl aluminum, tri-n-octylaluminium, diethylaluminum chloride or ethylaluminium dichloride etc., preferred triethyl aluminum.
Ethylene oligomerization of the present invention is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE or methylene dichloride etc. with organic solvent, preferred toluene.
When the Primary Catalysts that the present invention is prepared and promotor were used for ethylene oligomerization, preferably, the temperature of oligomerisation reaction was generally 20-80 ℃, and pressure is 1-5MPa, and the reaction times advantageously is 30-60 minute.
The 2-positive propionyl group-1 that the application of the invention method is prepared, the 10-phenanthroline amine that contracts closes iron (II) title complex and carries out ethylene oligomerization reaction, and the ethylene oligomerization product of acquisition comprises C
4, C
6, C
8, C
10, C
12, C
14, C
16, C
18, C
20, C
22Deng; After ethylene oligomerization finishes, take out a small amount of reaction mixture with in 5% the Hydrogen chloride with after carry out the result that GC analyzes and show the active height of oligomerisation.In addition, remaining reaction mixture neutralizes with the Hydrogen chloride acidifying ethanolic soln through 5%, when promotor adopts aikyiaiurnirsoxan beta, has only small amount of polymer to produce; When promotor adopts alkylaluminium cpd, there is not polymkeric substance to produce.
Compared with prior art, the present invention has following advantage:
Adopt nontoxic tri-n-n-propyl aluminum to carry out nucleophilic substitution reaction and replaced the synthesizing chlorinated 2-of hypertoxic Potssium Cyanide positive propionyl group-1; The 10-phenanthroline amine that contracts closes iron (II) title complex as the ethylene oligomerization Primary Catalysts; Synthesis step is few, and technology is simple, has reduced the Preparation of Catalyst cost.
Embodiment
Below be merely preferred embodiment of the present invention, can not limit scope of the present invention with this.Be every variation and modification of doing according to claim of the present invention, all should still belong in the scope that patent of the present invention contains.
Embodiment 1
1. catalyzer chlorination 2-positive propionyl group-1, the 10-phenanthroline contracts 2, and the 6-Diethyl Aniline closes the synthetic of iron (II) title complex
A.2-positive propionyl group-1, synthetic (the seeing following reaction process) of 10-phenanthroline
In the 250ml there-necked flask, drop into 1,10-phenanthroline 5.1g (28.3mmol) dissolves with 100ml toluene under nitrogen protection and magnetic agitation.(d=0.82g/ml 70.9mmol), dropwises about 15 minutes, under this temperature, continues to stir 18h, is warming up to afterwards about 30 ℃, continues to stir 10h under-60 ℃, under agitation in there-necked flask, slowly to drip the 13.5ml tri-n-n-propyl aluminum.Then reaction mixture is cooled to about-30 ℃,, is warming up to 30 ℃ again and stirs 10h to wherein slowly adding 50ml zero(ppm) water.Separatory then takes out organic phase, inorganicly uses dichloromethane extraction mutually three times, and the consumption of each methylene dichloride is 20ml, merges each organic phase.Solvent is removed in decompression.Afterwards, add 50ml oil of mirbane (1.205g/ml), and refluxed about 18 hours in 210 ℃.Filter, remove oil of mirbane being lower than 10mmHg under steaming, obtain black viscous liquid material.Use ETHYLE ACETATE: the mixing solutions of sherwood oil=1: 2 (volume ratio) is a leacheate, and gained black viscous liquid material is carried out silica gel column chromatography, obtains brown product, heavy 2.0g, productive rate 30%.This product is confirmed as compound described in the title a. through nuclear-magnetism and mass spectroscopy, i.e. 2-positive propionyl group-1,10-phenanthroline.
Mass spectrum MS-EI:236.
Nmr analysis:
1H NMR (400MHz, CDCl
3): δ 9.26 (dd, J=1.72,1H); 8.33 (s, 2H); 8.27 (dd, J=1.68,1H) 7.86 (d, J=8.8,1H); 7.80 (d, J=8.8,1H); 7.68 (dd, J=5.28,1H); 3.67 (m, J=7.24,2H); 1.10 (t, J=7.4,3H).
B. part 2-positive propionyl group-1, the 10-phenanthroline contracts 2, synthetic (the seeing following reaction process) of 6-Diethyl Aniline
In two mouthfuls of flasks of the 100ml that water trap is housed, drop into the 2-positive propionyl group-1 that obtains among 0.50g (2.12mmol) the step a, 10-phenanthroline and 0.95g (6.36mmol) 2, the toluene of the not moisture and oxygen of 6-Diethyl Aniline (mol ratio is 1: 3) and 35ml.Prolong is housed on the water trap, adds tosic acid 0.01g, reacted 6 hours 110 ℃ of refluxed.Solvent is removed in decompression, and use ETHYLE ACETATE: the mixing solutions of sherwood oil=1: 4 (volume ratio) is as leacheate, and silica gel column chromatography gets the glassy yellow product, heavy 0.63g, and productive rate is 81%.This product is confirmed as compound described in the title b. through nuclear-magnetism, mass spectrum and ultimate analysis, i.e. 2-positive propionyl group-1, and the 10-phenanthroline contracts 2, the 6-Diethyl Aniline.
Mass spectrum MS-EI:367.
Nmr analysis:
1H NMR (400MHz, CDCl
3): δ 9.25 (dd, J=2.96,1H); 8.66 (d, J=8.36,1H); 8.33 (d, J=8.36,1H); 8.28 (dd, J=7.84,1H); 7.85 (dd, J=9.02,2H); 7.65 (dd, J=4.36,1H); 7.15 (d, J=7.52,2H); 7.06 (t, J=7.04,1H); 3.01 (t, J=7.84 ,-CNCH
2CH
3, 2H); 2.40 (m, J=7.52, phCH
2CH
3, 2H); 1.20 (t, J=7.30, phCH
2CH
3, 6H); 0.90 (t, J=7.32, CH
3CH
2CN, 3H).
Ultimate analysis: C
25H
25N
3(367.49), theoretical value: C, 81.71; H, 6.86; N, 11.43.Observed value: C, 81.66; H, 6.87; N, 11.47.
C. chlorination 2-positive propionyl group-1, the 10-phenanthroline contracts 2, and the 6-Diethyl Aniline closes synthetic (the seeing following reaction process) of iron (II)
Under nitrogen protection, the THF with oxygen that 0.16g (1.25mmol) iron protochloride is not moisture with 20ml dissolves in two mouthfuls of flasks.With the 2-positive propionyl group-1 that obtains among 0.50g (1.36mmol) the step b, the 10-phenanthroline contracts 2 separately, and the 6-Diethyl Aniline is dissolved in the not moisture THF with oxygen of 20ml.Nitrogen protection at room temperature merges above-mentioned two solution down then.Reaction is carried out at once, and solution presents grey black.At room temperature, nitrogen protection stirred overnight.Use the TLC monitoring, up to 2-positive propionyl group-1, the 10-phenanthroline contracts 2, and 6-diethylbenzene amine ligand disappears basically.Suction filtration washs with anhydrous diethyl ether.Vacuum-drying gets the silver gray solid.This solid is confirmed as compound described in the title c., i.e. chlorination 2-positive propionyl group-1, and the 10-phenanthroline contracts 2, and the 6-Diethyl Aniline closes iron (II), and its results of elemental analyses is following.
Ultimate analysis: C
25H
25Cl
2FeN
3(494.24), theoretical value: C, 60.75; H, 5.10; N, 8.50.Observed value: C, 60.71; H, 5.00; N, 8.53.
2. ethylene oligomerization reaction
With toluene, 2.66ml MAO (4.0mmol) toluene solution (concentration is 1.5mol/l) and 8ml Primary Catalysts chlorination 2-positive propionyl group-1; The 10-phenanthroline contracts 2; The toluene solution that the 6-Diethyl Aniline closes iron (II) (2.0 μ mol) joins in the stainless steel autoclave of 300ml; Making TV is 100ml, Al/Fe=2000 (mol ratio).When polymerization temperature reaches 40 ℃, in reaction kettle, charge into ethene, keep the ethylene pressure of 1MPa, stirring reaction 30min.Afterwards, with syringe take out spiece with in 5% the Hydrogen chloride with after carry out the GC analysis: the oligomerisation activity is 1.36 * 10
7Gmol
-1(Fe) h
-1, oligomer content is respectively C
4: 23.30%, C
6～C
10: 60.33%, C
6～C
18: 75.12% (wherein containing linear alpha-alkene 96.1%), C
20～C
28: 1.58%, K value 0.63.Remaining mixture obtains a small amount of white wax shaped polymer with the ethanolic soln neutralization of 5% hcl acidifying, and polymerization activity is 5.32 * 10
4Gmol
-1H
-1
Embodiment 2-47
Repeat the step 1 of embodiment 1, difference is that the 6-Diethyl Aniline replaces with following substituted aniline successively: 2-aminotoluene, 3-monomethylaniline, 4-monomethylaniline, 23 dimethyl aniline, 2 with 2 among the embodiment 1 step b; 4-xylidine, 2,5-xylidine, 2,6-xylidine, 3,4-xylidine, 3; 5-xylidine, 2,4-bromo-2,6-xylidine, 2-MEA, 2-ethyl-6-monomethylaniline, 2-isopropyl aniline, 2; 6-diisopropyl aniline, 2-fluoroaniline, 2-fluoro-4-monomethylaniline, 2-fluoro-5-monomethylaniline, 2,4 difluorobenzene amine, 2,5-difluoroaniline, 2,6-difluoroaniline, 3; 4-difluoroaniline, 2,3,4-trifluoromethyl aniline, 2,4; 5-trifluoromethyl aniline, 2,4,6-trifluoromethyl aniline, 2,3; 4,5,6-penta fluoro benzene amine, 3-chloroaniline, 2,6-dichlorphenamide bulk powder, 2; 3,4-trichloroaniline, 245 trichloroaniline, 2; 4,6-trichloroaniline, 2-bromaniline, 2-bromo-4-monomethylaniline, 2-bromo-4-fluoroaniline, 4-bromo-2-fluoroaniline, 2,6-dibromo aniline, 2,6-two bromo-4-monomethylanilines, 2; 6-two bromo-4-chloroanilines, 2,4,6-bromamide, 2-bromo-6-chloro-4-fluoroaniline, 2-bromo-4-chloro-6-fluoroaniline, 2-bromo-4,6-difluoroaniline, 3-N-methyl-p-nitroaniline, 4-anisidine, 2-methyl-4-anisidine or 4-phenetidine; In step b, correspondingly obtain 2-positive propionyl group-1, each 2-positive propionyl group-1 that 10-phenanthroline and aforementioned each substituted aniline form, the 10-phenanthroline amine ligand that contracts, these part products are able to confirm through nuclear-magnetism, mass spectroscopy and ultimate analysis separately; And in step c, correspondingly obtain aforementioned each 2-positive propionyl group-1, the contract title complex of amine ligand and iron protochloride of 10-phenanthroline, these title complexs are able to confirm through ultimate analysis separately.
Claims (10)
1. one kind prepares chlorination 2-positive propionyl group-1 shown in the following general formula (I), the 10-phenanthroline method that amine closes iron (II) title complex that contracts:
Each variable-definition in its Chinese style is following:
R
1-R
5Be hydrogen, C independently of one another
1-C
6Alkyl, halogen, C
1-C
6Alkoxyl group or nitro; R
1-R
5Preferably be hydrogen, methyl, ethyl, n-propyl, sec.-propyl, fluorine, chlorine, bromine, methoxyl group, oxyethyl group or nitro independently of one another;
Said method comprises the steps:
A.2-positive propionyl group-1,10-phenanthroline synthetic: make 1, the 10-phenanthroline reacts with tri-n-n-propyl aluminum, pass through successively again hydrolysis and with the oxidizing reaction of oil of mirbane, acquisition formula (b) compound;
B.2-positive propionyl group-1,10-phenanthroline the synthetic of amine ligand that contract: formula (b) compound and formula (c) compound are reacted in the presence of as catalyzer at tosic acid, acquisition formula (d) compound,
R wherein
1-R
5Such as mutual-through type (I) definition; And
C. chlorination 2-positive propionyl group-1, the 10-phenanthroline amine that contracts closes the synthetic of iron (II) title complex: make formula (d) compound and iron protochloride react acquisition formula (I) compound
R wherein
1-R
5Such as mutual-through type (I) definition.
2. method according to claim 1 is characterized in that in step a, 1, and the mol ratio of 10-phenanthroline and tri-n-n-propyl aluminum is 1: 0.5～1: 4.5, preferred 1: 2.0～1: 2.6; And/or 1, the mol ratio of 10-phenanthroline and oil of mirbane is 1: 0.5～1: 30, preferred 1: 15～1: 20.
3. method according to claim 1 and 2 is characterized in that in step a, 1, and the reaction of 10-phenanthroline and tri-n-n-propyl aluminum under-60～-80 ℃, is preferably carried out under-60～-70 ℃ earlier, needs then, under 20～40 ℃, carries out.
4. according to each described method among the claim 1-3, it is characterized in that in step a, hydrolysis is carried out under-60～0 ℃, and/or under refluxing, carry out with the oxidizing reaction of oil of mirbane.
5. according to each described method among the claim 1-4, it is characterized in that in step b, 2-positive propionyl group-1, the mol ratio of the substituted aniline of 10-phenanthroline and formula (c) is 1: 1～1: 5.
6. according to each described preparation method among the claim 1-5, it is characterized in that in step b that substituted aniline is by 1-5, preferred 1-4, more preferably 1-3 identical or different C that is selected from
1-C
6Alkyl, C
1-C
6The substituted aniline of the substituting group of alkoxyl group, halogen and nitro; Preferred 2-aminotoluene, 3-monomethylaniline, 4-monomethylaniline, 23 dimethyl aniline, 2,4-xylidine, 2,5-xylidine, 2,6-xylidine, 3; 4-xylidine, 3,5-xylidine, 2,4-bromo-2,6-xylidine, 2-MEA, 2-ethyl-6-monomethylaniline, 2-isopropyl aniline, 2; 6-Diethyl Aniline, 2,6-diisopropyl aniline, 2-fluoroaniline, 2-fluoro-4-monomethylaniline, 2-fluoro-5-monomethylaniline, 2,4 difluorobenzene amine, 2,5-difluoroaniline, 2,6-difluoroaniline, 3; 4-difluoroaniline, 2,3,4-trifluoromethyl aniline, 2,4; 5-trifluoromethyl aniline, 2,4,6-trifluoromethyl aniline, 2,3; 4,5,6-penta fluoro benzene amine, 3-chloroaniline, 2,6-dichlorphenamide bulk powder, 2; 3,4-trichloroaniline, 245 trichloroaniline, 2; 4,6-trichloroaniline, 2-bromaniline, 2-bromo-4-monomethylaniline, 2-bromo-4-fluoroaniline, 4-bromo-2-fluoroaniline, 2,6-dibromo aniline, 2,6-two bromo-4-monomethylanilines, 2; 6-two bromo-4-chloroanilines, 2,4,6-bromamide, 2-bromo-6-chloro-4-fluoroaniline, 2-bromo-4-chloro-6-fluoroaniline, 2-bromo-4,6-difluoroaniline, 3-N-methyl-p-nitroaniline, 4-anisidine, 2-methyl-4-anisidine or 4-phenetidine; More preferably 2, the 6-Diethyl Aniline.
7. according to each described method among the claim 1-6; It is characterized in that being reflected in the organic solvent among step a and the b carry out; And said organic solvent is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE, methylene dichloride or its mixture, preferred toluene.
8. according to each described method among the claim 1-7; It is characterized in that being reflected in the organic solvent among the step c carry out; And said organic solvent is selected from toluene, hexanaphthene, ether, THF, ethanol, benzene, YLENE, methylene dichloride or its mixture, preferred THF.
9. according to each described method among the claim 1-8, it is characterized in that in step c that the contract mol ratio of amine ligand and iron protochloride of the 2-positive propionyl group-1 of formula (d), 10-phenanthroline is 1: 1-1.2: 1, be preferably 1.05: 1-1.1: 1.
10. chlorination 2-positive propionyl group-1 shown in the general formula (I) that makes according to each described method among the claim 1-9,10-phenanthroline contract amine close iron (II) title complex in ethylene oligomerization as Application of Catalyst.
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| CN103380137A (en) * | 2010-12-01 | 2013-10-30 | 中国石油化工股份有限公司 | N ortho acyl substituted nitrogen-containing heterocyclic compound and process for preparing aminal iron (ii) complexes thereof |
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| US9266983B2 (en) | 2013-04-17 | 2016-02-23 | China Petroleum & Chemical Corporation | Catalyst composition and process for ethylene oligomerization |
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