CN107266446A - The piperidines and the preparation method of pyridone tin complex acted on PVC stabilizer - Google Patents
The piperidines and the preparation method of pyridone tin complex acted on PVC stabilizer Download PDFInfo
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- ZZHASWZOKAWZMF-UHFFFAOYSA-N CC(C)(C)N(c1c2[nH]nn1)C(CCN(C1)C(OC(C)(C)C)=O)=C1C2=O Chemical compound CC(C)(C)N(c1c2[nH]nn1)C(CCN(C1)C(OC(C)(C)C)=O)=C1C2=O ZZHASWZOKAWZMF-UHFFFAOYSA-N 0.000 description 1
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- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
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Abstract
The invention discloses the preparation method of a kind of piperidines acted on PVC stabilizer and pyridone tin complex, belong to PVC stabilizer synthesis technical field.Technical scheme main points are：
Description
Technical field
The invention belongs to pharmaceutical chemical synthesis technical field, and in particular to it is a kind of it is new with PVC stabilizer act on
The preparation method of piperidines and pyridone-tin complex.
Background technology
Polyvinyl chloride (abbreviation PVC) is one of five big general-purpose plastics, with its cheap price and very prominent harmony
Can and as very good material, be also plastic applications ancient and active kind in history, its global yield is only second to gather
Ethene occupies second.China is one of big producer of polyvinyl chloride resin, and domestic PVC industry took by the development of more than 50 years
Rapid progress, the current country possesses family more than 100 of Production of PVC enterprise, and production capacity occupy first in synthetic resin at home
Position.
When general PVC is generally heated to more than 130 DEG C, just start to discharge HCl, because in manufacture PVC process
In, because Auto-oxidation reaction, chain termination reaction and the copolyreaction of micro amount of oxygen and some not yet clear and definite side reactions are generated
Unstable C-Cl keys, and then HCl is discharged by thermal decomposition, and HCl can be decomposed to PVC continuation and be played catalytic action, be made
PVC is finally converted to containing undersaturated conjugated double bond structures (polyenoid sequence), such consecutive reaction, has finally resulted in big point
Occurs long polyenoid sequence in subchain, when the double key number on macromolecular chain is more than 6, PVC will change colour.
Therefore, should possess prophylactic function and passivation as PVC heat stabilizer.Wherein prophylactic function includes two sides
Face, is on the one hand to absorb the HCl that PVC thermal degradations are discharged, and is on the other hand to eliminate the unstable chlorine atoms of PVC, so as to prevent
HCl generation；Passivation is the material of PVC performances of eliminating the effects of the act, and its method is that heat stabilizer enters with polyenoid sequence compound
Row addition reaction, makes long polyenoid sequence compound shorten and (reduce conjugated double bond number).At present, in the market action effect is best
Be organic tin heat stabilizer, be most promising heat stabilizer, especially transparent PVC preparation in application it is more wide
It is general.It mainly includes stannous methide, the soap of di-n-butyl tin and dioctyltin, maleate, mercaptides, mercapto
The types such as soap.Organic tin heat stabilizer has the advantages that good heat endurance, compatibility and the transparency, but such
Heat stabilizer is all liquid, not very convenient in terms of transport, storage.
In recent years, heterocyclic compound is because structure is changeable, active high, toxicity is low and turns into the master of medicine and agricultural chemicals innovation
Stream, plurality of new varieties just continuously put goods on the market, and study on the synthesis is more towards baroque condensed hetero ring, double miscellaneous
Ring and poly-heterocyclic compounds.Piperidine compounds are the nitrogen-containing heterocycle compounds with good biological activity, are widely used in medicine
With the study on the synthesis of agricultural chemicals.Piperidines is mainly used in synthesis medicine, agricultural chemicals and rubber chemicals, is mainly used in synthesizing rice in pesticide industry
Field herbicidal dimepiperate, is a kind of selective non-hormone-type thiocarbamic acid class herbicide, very with development prospect.
Pharmaceuticals industry is used to synthesize medicine for digestive system hydrochloric acid acetyl Roxatidine, cardiovascular disease medicine Dipyridmole etc..In rubber
Auxiliary industry is used to synthesize the super vulcanization accelerator bis-pentamethylenethiuram tetrasulfide of thiurams, dithiocar-bamate
Super accelerator pentamethylene aminodithioformic acid piperidinium salt of class etc..Other piperidines can also synthesize various new fine chemistry industry
Intermediate, many products belong to the intermediate of small tonnage newly developed, the medicine of high added value, agricultural chemicals and auxiliary agent, such as 2- first
Phenylpiperidines, 3- aminomethylpiperidines, 4- hydroxy piperidines etc..Pyridine is also a kind of important nitrogen heterocyclic ring, because it has life well
Thing activity is widely used in medical research.For example, its derivative can be adjusted as 5HT2A receptor antagonists, extracellular signal
Save kinases inhibitor, mammal P2X7 conditioning agents, and with anti-breast cancer cell MDA-MB-231 proliferation activities and
Suppress the propagation of hepatocellular carcinoma H22.
We are easy to the principle combined with hydrogen chloride using nitrogen-atoms, nitrogen-atoms is contained on piperidines and pyridone, synthesis
The a series of piperidines with PVC stabilizer function and pyridone-tin complex, and carried out coherent detection.
The content of the invention
Present invention solves the technical problem that there is provided, a kind of synthetic method is simple, molecular structure it is novel have PVC steady
Determine the piperidines of agent effect and the preparation method of pyridone-tin complex.
The present invention adopts the following technical scheme that a kind of new acts on PVC stabilizer to solve above-mentioned technical problem
Piperidines and the molecular structure of pyridone-tin complex be：
The present invention adopts the following technical scheme that a kind of new acts on PVC stabilizer to solve above-mentioned technical problem
Piperidines and pyridone-tin complex preparation method, it is characterised in that concretely comprise the following steps：
A, N-Boc-4- piperidones and dimethyl carbonate react in the presence of potassium tert-butoxide obtains N-Boc-3- formic acid first
Ester -4- piperidones
B, N-Boc-3- methyl formate -4- piperidones are under ammonium acetate effect, and ketone carbonyl redox is changed into amino
Compound N-Boc-3- methyl formate -4- amino -3- alkene-piperidines
C, N-Boc-3- methyl formate -4- amino -3- alkene-piperidines and chloroformyl ethyl acetate take under TEA effects
Generation reaction obtains compound N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines
D, N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines occur in the presence of potassium tert-butoxide
Intramolecular cyclization obtains compoundThen the compound carries out intramolecular in acid condition
Hydrogen migration and carbonyl reduction obtain compound
E、Under strongly acidic conditions, ester group and Boc groups are sloughed in heating, obtain compound
F、Under POCl3 effect, hydroxyl is replaced by chlorine obtains compound
G、Chloro carbon-to-nitrogen double bon is changed into amido link under concentrated hydrochloric acid effect and obtain compound
H、In the basic conditions, Boc amido protectings are carried out and obtains compound
I、Under cesium carbonate effect compound is obtained with iodo-tert-butane reaction
J、Chloro carbon-carbon double bond is changed into amido link under organic acid effect and obtain compound
K、Compound is obtained with azido compound reaction
L、Slough Boc groups and the tert-butyl group obtains compound
M、Obtained with stannous chloride complex reaction
Further limit, step A detailed process is：In reaction bulb, 1eq N-Boc-4- piperidones is added to
In the toluene of 10V volumes, 2eq dimethyl carbonate and 2eq potassium tert-butoxide are added, 70 DEG C of reaction 1h is heated to, is cooled to
Room temperature, adds water and is quenched, and it is 7 to adjust reaction solution pH with 1mol/L HCl, ethyl acetate extraction, after anhydrous sodium sulfate drying, is spin-dried for
Obtain yellow oil N-Boc-3- methyl formate -4- piperidones
Further limit, step B detailed process is：1eq N-Boc-3- methyl formate -4- piperidones is added to 10
In the methanol of times volume, 3eq ammonium acetate is added, reaction is stayed overnight, be spin-dried for methanol, add the water of 3 times of volumes, dichloromethane extraction
Anhydrous sodium sulfate drying is used after extracting reaction solution, red oily liquids N-Boc-3- methyl formate -4- amino -3- is obtained after being spin-dried for
Alkene-piperidines
Further limit, step C detailed process is：By 1eq N-Boc-3- methyl formate -4- amino -3- alkene-piperidines
In the DCM for being added to 8 times of volumes, 1.05eq TEA is added, 10 DEG C are cooled to, 1.05eq 4- chloromethane ethyl acetoacetic acid second is added dropwise
Ester, room temperature reaction is stayed overnight, and adds the DCM dilute reaction solutions of 8 times of volumes, twice, anhydrous sodium sulfate drying is spin-dried for both obtaining for washing
Red oil product N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines
Further limit, step D detailed process is：1eq N-Boc-3- methyl formate -4- carbamyl acetic acid second
Ester -3- alkene-piperidines is added in the THF of 10 times of volumes, then is added portionwise 2.0eq t-BuOK, reaction temperature control less than
25 DEG C, frozen water is added after reaction 1h and is quenched, it is 3 to adjust reaction solution pH with 2mol/L HCl, filtering, and it is white that vacuum drying obtains class
Color solid product
Further limit, step E detailed process is：In 10eq 6mol/L HCl solution, it is added portionwise 1.0eq's100 DEG C are heated to, reaction is stayed overnight, are spin-dried for reaction dissolvent, then washed with ether, is dried in vacuo
Obtain off-white powder
Further limit, step F detailed process is：To 5eq POCl3In be added portionwise 1.0eq's
100 DEG C are heated to, reaction is stayed overnight, are spin-dried for POCl3Obtain Red oil product
Further limit, step G detailed process is：It is added to the 1,4- dioxies six of 4 times of volumes
In ring, the concentrated hydrochloric acid of 4 times of volumes is added, 100 DEG C are heated to, back flow reaction 2 days is spin-dried for adding the second of 10 times of volumes after solvent
Acetoacetic ester, is washed three times, is dried and is obtained brown solid after being spin-dried for
Further limit, step H detailed process is：1eq'sIt is added to the 1,4- of 10 times of volumes
In dioxane and the water of 10 times of volumes, then 3.0eq sodium carbonate and 1.5eq (Boc) is added portionwise2O, reacts at room temperature 10h
Afterwards, filter, then wash with ethyl acetate reaction solution is extracted with ethyl acetate after filter cake, then washed with sodium chloride solution, dried, revolved
Reaction solution is obtained
Further limit, step I detailed process is：1.0eq'sIt is added to 10 times of volumes
In DMF, 1.5eq Cs is added2CO3, 1.3eq iodine is with tertiary butane, and room temperature reaction is stayed overnight, and adds frozen water and reaction solution, second is quenched
Acetoacetic ester extractive reaction liquid, sodium chloride solution washing, dries, is spin-dried for, then is beaten with ether, filters, and vacuum drying obtains white
Solid
Further limit, step J detailed process is：By 1.0eq'sIt is added to 4 times of volumes
In Isosorbide-5-Nitrae-dioxane, a certain amount of organic acid is added, 100 DEG C are heated to, back flow reaction 2 days is spin-dried for adding after solvent
The ethyl acetate of 10 times of volumes, is washed three times, is dried and is obtained brown solid after being spin-dried for
Further limit, step K detailed process is：In reaction bulb, 1.0eq'sIt is added to
In the tert-butyl alcohol of 20 times of volumes, 3.0eq potassium carbonate and 1.2eq TMSN are added3, react at room temperature after a period of time,
TLC monitoring raw material reactions are complete, obtain compound
Further limit, step L detailed process is：In reaction bulb, by 1.0eq'sPlus
Enter in the HCl/1 to the methanol of 10 times of volumes and the 12mol/L of 10 volumes, 4- dioxane, room temperature reaction is stayed overnight, and is spin-dried for, second
Ether is washed, and is obtained
Further limit, step M detailed process is：Nitrogen is passed through into the ultrasonic response container for being provided with agitating device
Gas, then add dissolved withDichloromethane solution, add after ammoniacal liquor, in 25 DEG C to ultrasonic response container
The middle methanol solution being added dropwise dissolved with stannous chloride, opens agitating device and ultrasonic generator, ultrasonic wave hair during dropwise addition
The setpoint frequency of generating apparatus is 80KHz, drips rear solution for clear state, stops stirring, keep ultrasonic generator after
Continuous work, is cooled to 0 DEG C of standing reaction solution, opens the steam vent on ultrasonic response container, keeps the nitrogen that is passed through from exhaust
Hole is discharged, and nitrogen is discharged ultrasonic response container with reaction dissolvent, has crystallization after clear crystal precipitation, 5h complete, suction filtration
Reaction solution, filter cake is washed repeatedly with methanol to wash away unnecessary stannous chloride, and filter cake is obtained after drying at room temperature
The piperidines of the present invention acted on PVC stabilizer the and synthetic route of pyridone-tin complex is：
The present invention has synthesized a kind of new piperidine and pyridone-tin complex and has carried out PVC stabilizer test, and finding should
Complex has good PVC stabilizer function.
Embodiment
The above to the present invention is described in further details by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
In reaction bulb, N-Boc-4- piperidones 20g (0.1mol) is added in toluene 200mL, carbonic acid two is added
Methyl esters 18g (0.2mol) and potassium tert-butoxide 22g (0.2mol), is heated to 70 DEG C of reaction 1h, is cooled to room temperature, the 100mL that adds water quenches
Go out, it is 7 to adjust reaction solution pH with 1mol/L HCl, ethyl acetate extraction, after anhydrous sodium sulfate drying, be spin-dried for obtaining yellow oil
Shape thing N-Boc-3- methyl formate -4- piperidones 25g；1HNMR(400MHz,CD3Cl)δ:3.81 (s, 1H), 3.71 (d, J=
8.4Hz, 1H), 3.68 (d, J=8.4Hz, 1H), 3.45 (s, 3H), 3.07-3.05 (m, 2H), 2.76-2.73 (m, 2H), 1.37
(s,9H).MS-ESI(m/z):258.3[M+H+]。
Embodiment 2
In reaction bulb, N-Boc-3- methyl formate -4- piperidones 25g (0.1mol) are added in methanol 300mL, then
Ammonium acetate 22g (0.3mol) is added, reaction is stayed overnight, TLC monitoring raw material reactions are complete, are spin-dried for methanol, water 900mL added, with two
Chloromethanes 300mL extractive reactions liquid three times, merges and anhydrous sodium sulfate drying is used after organic phase, red oily liquids is obtained after being spin-dried for
N-Boc-3- methyl formate -4- amino -3- alkene-piperidines 25g；1HNMR(400MHz,CD3Cl)δ:8.56(s,2H),3.93(s,
2H),3.77(s,3H),3.57-3.55(m,2H),2.16-2.13(m,2H),1.37(s,9H).MS-ESI(m/z):257.3[M
+H+]。
Embodiment 3
In reaction bulb, N-Boc-3- methyl formate -4- amino -3- alkene-piperidines 26g (0.1mol) is added to dichloromethane
In alkane 200mL, TEA11g (0.11mol) is added, 10 DEG C are cooled to, 4- chloroformyl ethyl acetate 16g is slowly added dropwise
(0.105mol), room temperature reaction is stayed overnight, and TLC monitoring raw material reactions are complete, add dichloromethane 200mL dilute reaction solutions, water
Wash twice, anhydrous sodium sulfate drying, be spin-dried for both obtaining Red oil product N-Boc-3- methyl formate -4- carbamyl acetic acid second
Ester -3- alkene-piperidines 25g；1HNMR(400MHz,CD3Cl)δ:4.71(s,2H),3.93(s,2H),3.79(s,3H),3.57-
3.55(m,2H),3.53(s,2H),2.16-2.13(m,2H),1.37(s,9H),1.29(s,3H).MS-ESI(m/z):371.4
[M+H+]。
Embodiment 4
In reaction bulb, N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines 37g (0.1mol)
It is added in THF400mL, then t-BuOK 23g (0.2mol) is added portionwise, reaction temperature control is reacted after 1h less than 25 DEG C
Add frozen water 300mL to be quenched, it is 3 to adjust reaction solution pH with 2mol/L HCl, and filtering, vacuum drying obtains off-white powder production
Product32g；1H NMR(400MHz,DMSO-d6)δ:11.51(s,1H),5.35(s,1H),
4.71 (s, 2H), 4.33 (d, J=4.0Hz, 2H), 3.66-3.62 (m, 2H), 3.25 (d, J=12.0Hz, 2H), 1.41-1.39
(m,9H),1.33-1.32(m,3H)。
Embodiment 5
In reaction bulb, the HCl solution 200mL in 6mol/L is added, then be added portionwise
34g (0.1mol), is heated to 100 DEG C, reaction is stayed overnight, and is spin-dried for reaction dissolvent, then is washed with ether, and vacuum drying obtains off-white color
Solid15g；1H NMR(400MHz,DMSO-d6)δ:11.47(s,1H),5.95(s,1H),5.41(s,
1H), 3.86-3.85 (m, 2H), 3.71 (d, J=12.0Hz, 2H), 3.11-3.09 (m, 2H), 1.90 (s, 1H).
Embodiment 6
In closed reaction bulb, it is added portionwise into POCl3 50g (0.5mol)16g
(0.1mol), is slowly heated to 100 DEG C, reaction is stayed overnight, and after TLC monitoring raw material reactions completely, vacuum is spin-dried for POCl3 and obtained
Red oil product16g；1H NMR(400MHz,DMSO-d6)δ:7.61(s,1H),3.81(s,2H),
3.37 (d, J=12.0Hz, 2H), 3.13-3.12 (m, 2H), 1.87 (s, 1H).
Embodiment 7
In the reaction bulb with thermometer and stirring,20g is added to 1,4- dioxane
In 100mL, concentrated hydrochloric acid 100mL is slow added into, 100 DEG C are heated to, back flow reaction 2 days, TLC is monitored after raw material reaction completely,
It is spin-dried for solvent and concentrate is added the ethyl acetate of 10 times of volumes, washes three times, separate organic phase, dry and obtain palm fibre after being spin-dried for
Color solid18g
Embodiment 8
In reaction bulb,18g (0.1mol) is added to 1,4- dioxane 200mL and water 200mL
In, then sodium carbonate 30g (0.3mol) and (Boc) is added portionwise2After O 33g (0.15mol), room temperature reaction 10h, TLC monitoring is former
Material reaction is complete, filtering reacting liquid, then is washed with ethyl acetate 100mL after filter cake with ethyl acetate 200mL extractive reactions liquid three
It is secondary, then washed with sodium chloride solution, dry, rotation reaction solution is obtained20g；1H NMR(400MHz,
DMSO-d6)δ:6.61 (s, 1H), 3.93 (s, 2H), 3.54 (s, 3H), 3.57 (d, J=12.0Hz, 2H), 2.07-2.05 (m,
2H),1.39(s,9H).
Embodiment 9
In reaction solution,28g (0.1mol) is added in DMF 300mL, adds carbonic acid
Caesium 50g (0.15mol), iodo-tert-butane 24g (0.13mol), room temperature reaction is stayed overnight, and TLC monitoring raw material reactions are complete, add ice
Water 100mL is quenched reaction solution, ethyl acetate 200mL extractive reactions liquid three times, saturated nacl aqueous solution 200mL washing reaction liquids,
Dry, be spin-dried for, then be beaten with ether, filtered, vacuum drying obtains white solid26g
Embodiment 10
, will in reaction solution34g (0.1mol) is added in Isosorbide-5-Nitrae-dioxane 200mL, then
Trifluoromethanesulfonic acid 20mL is slowly added to, under nitrogen protection, 100 DEG C are heated to, back flow reaction 3h, TLC monitoring raw material has reacted
Entirely, reaction solution is poured into frozen water 1000mL, then the pH for adjusting reaction solution with saturated solution of sodium carbonate is neutral, then use acetic acid second
Ester 300mL extractive reactions liquid three times, merge organic phase, be washed with water three times, separate organic phase dry be spin-dried for after obtain brown consolidate
Body26g；1H NMR(400MHz,DMSO-d6)δ:4.17(s,2H),3.83(s,2H),3.54(s,
2H),2.07-2.05(m,2H),1.45(s,9H),1.37(s,9H)；MS-ESI(m/z):323.4[M+H+]。
Embodiment 11
In reaction bulb,32g (0.1mol) is added in tert-butyl alcohol 400mL, adds carbon
Sour K42 g (0.3mol) and TMSN314g (0.12mol), reacts after a period of time at room temperature, and TLC monitoring raw materials have reacted
Entirely, reaction solution is poured into water 500mL, with ethyl acetate 200mL extractive reactions liquid three times, merges organic phase, solvent is evaporated off and obtains
To compound29g；1H NMR(400MHz,DMSO-d6)δ:12.3(s,1H),3.96(s,2H),
3.54-3.53(s,2H),2.07-2.06(m,2H),1.39(s,9H),1.26(s,9H)；MS-ESI(m/z):348.4[M+H+]。
Embodiment 12
, will in reaction bulb35g (0.1mol) is added to methanol 300mL's and 12mol/L
In HCl/1,4- dioxane 200mL, room temperature reaction is stayed overnight, and TLC monitoring raw material reactions are complete, are spin-dried for, ether washing concentrate,
Obtain17g；1H NMR(400MHz,DMSO-d6)δ:12.3(s,1H),3.95-3.94(m,1H),
3.33-3.32(m,2H),2.95(s,2H),2.07-2.06(m,2H)；MS-ESI(m/z):192.2[M+H]+。
Embodiment 13
Nitrogen is passed through into the ultrasonic response container for being provided with agitating device, is then added dissolved with compound51g dichloromethane solution 500mL, is added after ammoniacal liquor 100mL, in 25 DEG C to ultrasonic response container
In methanol solution 500mL dissolved with stannous chloride 50g is slowly added dropwise, open agitating device during dropwise addition and ultrasonic wave filled
Put, the setpoint frequency of ultrasonic generator is 80KHz, drip rear solution for clear state, stop stirring, keep ultrasonic wave
Generating means works on, and slow cooling opens the steam vent on ultrasonic response container to 0 DEG C of standing reaction solution, keeps logical
The nitrogen entered is discharged from steam vent, nitrogen is discharged ultrasonic response container with a certain amount of reaction dissolvent, gradually has colourless
Crystal is separated out, and completely, suction filtration reaction solution, filter cake is washed repeatedly to wash away unnecessary tin salt crystallization with methanol, and filter cake exists after 5h
Obtained after drying at room temperature48g。
Embodiment 15
Heat stability testing
PVC material formula needed for detection, which is constituted, is：The adjacent benzene two of plasticizer of the PVC material of 100 parts by weight, 5 parts by weight
The stabilizer of formic acid dioctyl ester, the titanium dioxide of 3 parts by weight and certain part by weight, under the conditions of 180 DEG C in twin-screw extruder
Plasticate to discoloration, the length (time is longer, and explanation stabilizer effect is better) for the time undergone during observation color change is above-mentioned
It is as shown in the table per stabilizer addition used in portion PVC material.
As can be seen from the above table, obtained by the present inventionEffect effect
Fruit has exceeded traditional lead compound stabilizer, calcium-zinc composite stabilizing agent and Methyl stannum mercaptide stabilizer stabilizer level.
Embodiment above describes general principle, principal character and the advantage of the present invention, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (7)
1. the piperidines and the preparation method of pyridone-tin complex that are acted on PVC stabilizer, it is characterised in that specific steps
For：
A, N-Boc-4- piperidones and dimethyl carbonate react in the presence of potassium tert-butoxide obtains N-Boc-3- methyl formates -4-
Piperidones；
B, N-Boc-3- methyl formate -4- piperidones are under ammonium acetate effect, and ketone carbonyl redox obtains compound into amino
N-Boc-3- methyl formate -4- amino -3- alkene-piperidines；
It is anti-that under TEA effects substitution occurs for C, N-Boc-3- methyl formate -4- amino -3- alkene-piperidines and chloroformyl ethyl acetate
Compound N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines should be obtained；
Molecule occurs in the presence of potassium tert-butoxide for D, N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines
Interior cyclization obtains compoundThen the compound carries out intramolecular hydrogen turn in acid condition
Move and carbonyl reduction obtains compound
E、Under strongly acidic conditions, ester group and Boc groups are sloughed in heating, obtain compound
F、Under POCl3 effect, hydroxyl is replaced by chlorine obtains compound
G、Chloro carbon-to-nitrogen double bon is changed into amido link under concentrated hydrochloric acid effect and obtain compound
H、In the basic conditions, Boc amido protectings are carried out and obtains compound
I、Under cesium carbonate effect compound is obtained with iodo-tert-butane reaction
J、Chloro carbon-carbon double bond is changed into amido link under organic acid effect and obtain compound
K、Compound is obtained with azido compound reaction
L、Slough Boc groups and the tert-butyl group obtains compound
M、Obtained with stannous chloride complex reaction
2. the preparation method of the piperidines according to claim 1 acted on PVC stabilizer and pyridone-tin complex,
It is characterized in that step A detailed process is：In reaction bulb, 1eq N-Boc-4- piperidones is added to the first of 10V volumes
In benzene, 2eq dimethyl carbonate and 2eq potassium tert-butoxide are added, 70 DEG C of reaction 1h is heated to, is cooled to room temperature, adds water and quench
Go out, it is 7 to adjust reaction solution pH with 1mol/L HCl, ethyl acetate extraction, after anhydrous sodium sulfate drying, be spin-dried for obtaining yellow oil
Shape thing N-Boc-3- methyl formate -4- piperidones；Described step B detailed process is：By 1eq N-Boc-3- formic acid first
Ester -4- piperidones is added in the methanol of 10 times of volumes, adds 3eq ammonium acetate, and reaction is stayed overnight, and is spin-dried for methanol, adds 3 times
Anhydrous sodium sulfate drying is used after the water of volume, dichloromethane extractive reaction liquid, red oily liquids N-Boc-3- is obtained after being spin-dried for
Methyl formate -4- amino -3- alkene-piperidines；Described step C detailed process is：By 1eq N-Boc-3- methyl formates -4-
Amino -3- alkene-piperidines is added in the DCM of 8 times of volumes, adds 1.05eq TEA, is cooled to 10 DEG C, is added dropwise 1.05eq's
4- chloroformyl ethyl acetate, room temperature reaction is stayed overnight, and adds the DCM dilute reaction solutions of 8 times of volumes, is washed twice, anhydrous slufuric acid
Sodium is dried, and is spin-dried for both obtaining Red oil product N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene-piperidines.
3. the preparation method of the piperidines according to claim 1 acted on PVC stabilizer and pyridone-tin complex,
It is characterized in that step D detailed process is：1eq N-Boc-3- methyl formate -4- carbamyl ethyl acetate -3- alkene -
Piperidines is added in the THF of 10 times of volumes, then 2.0eq t-BuOK is added portionwise, and reaction temperature control is reacted less than 25 DEG C
Add frozen water after 1h to be quenched, it is 3 to adjust reaction solution pH with 2mol/L HCl, and filtering, vacuum drying obtains off-white powder productDescribed step E detailed process is：In 10eq 6mol/L HCl solution, add in batches
Enter 1.0eq's100 DEG C are heated to, reaction is stayed overnight, are spin-dried for reaction dissolvent, then washed with ether
Wash, vacuum drying obtains off-white powder
4. the preparation method of the piperidines according to claim 1 acted on PVC stabilizer and pyridone-tin complex,
It is characterized in that step F detailed process is：To 5eq POCl3In be added portionwise 1.0eq'sIt is heated to
100 DEG C, reaction is stayed overnight, and is spin-dried for POCl3Obtain Red oil productDescribed step G detailed process
For：In the Isosorbide-5-Nitrae-dioxane for being added to 4 times of volumes, the concentrated hydrochloric acid of 4 times of volumes is added, is heated to
100 DEG C, back flow reaction 2 days is spin-dried for adding the ethyl acetate of 10 times of volumes after solvent, washed three times, dries and obtain palm fibre after being spin-dried for
Color solidDescribed step H detailed process is：1eq'sIt is added to 10 times of bodies
In long-pending Isosorbide-5-Nitrae-dioxane and the water of 10 times of volumes, then 3.0eq sodium carbonate and 1.5eq (Boc) is added portionwise2O, room temperature
React after 10h, filtering, then washed with ethyl acetate reaction solution is extracted with ethyl acetate after filter cake, then washed with sodium chloride solution,
Dry, rotation reaction solution is obtainedDescribed step I detailed process is：1.0eq'sIn the DMF for being added to 10 times of volumes, 1.5eq Cs is added2CO3, 1.3eq iodine band tertiary butane, room
Temperature reaction is stayed overnight, and adds frozen water and reaction solution is quenched, ethyl acetate extractive reaction liquid, sodium chloride solution washing is dried, is spin-dried for, then
It is beaten, is filtered with ether, vacuum drying obtains white solid
5. the preparation method of the piperidines according to claim 1 acted on PVC stabilizer and pyridone-tin complex,
It is characterized in that step J detailed process is：By 1.0eq'sIt is added to the 1,4- dioxies of 4 times of volumes
In six rings, a certain amount of organic acid is added, 100 DEG C are heated to, back flow reaction 2 days is spin-dried for after solvent adding 10 times of volumes
Ethyl acetate, wash three times, dry be spin-dried for after obtain brown solidDescribed step K's is specific
Process is：In reaction bulb, 1.0eq'sIn the tert-butyl alcohol for being added to 20 times of volumes, 3.0eq is added
Potassium carbonate and 1.2eq TMSN3, react at room temperature after a period of time, TLC monitoring raw material reactions are complete, obtain compoundDescribed step L detailed process is：In reaction bulb, by 1.0eq's
It is added in the methanol of 10 times of volumes and the 12mol/L of 10 volumes HCl/1,4- dioxane, room temperature reaction is stayed overnight, and is spin-dried for,
Ether is washed, and is obtained
6. the preparation method of the piperidines according to claim 1 acted on PVC stabilizer and pyridone-tin complex, it is special
Levy and be that step M detailed process is：Nitrogen is passed through into the ultrasonic response container for being provided with agitating device, then add dissolved withDichloromethane solution, add ammoniacal liquor after, be added dropwise in 25 DEG C into ultrasonic response container dissolved with protochloride
The methanol solution of tin, opens agitating device and ultrasonic generator during dropwise addition, the setpoint frequency of ultrasonic generator is
80KHz, drips rear solution for clear state, stops stirring, keep ultrasonic generator to work on, be cooled to 0 DEG C of standing
Reaction solution, opens the steam vent on ultrasonic response container, keeps the nitrogen being passed through to be discharged from steam vent, makes nitrogen molten with reaction
Ultrasonic response container is discharged in agent, has after clear crystal precipitation, 5h crystallization completely, suction filtration reaction solution, filter cake is washed repeatedly with methanol
To wash away unnecessary stannous chloride, filter cake is obtained after drying at room temperature
7. the preparation method of the piperidines according to claim 1 acted on PVC stabilizer and pyridone-tin complex,
It is characterized in that the specific synthetic route in preparation process is：
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| CN102558608A (en) * | 2010-12-27 | 2012-07-11 | 泰安市蓝天助剂有限公司 | Sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and preparation method thereof |
| CN105315574A (en) * | 2015-10-12 | 2016-02-10 | 浙江工业大学 | Calcium and zinc heat stabilizer for PVC and application of calcium and zinc heat stabilizer |
| CN106084294A (en) * | 2016-06-20 | 2016-11-09 | 河南师范大学 | A kind of beta diketone class organotin PVC heat stabilizer and preparation method thereof |
| CN106117263A (en) * | 2016-06-25 | 2016-11-16 | 安徽升华新奥特化工有限公司 | A kind of Methyl stannum mercaptide stabilizer of environmental protection |
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558608A (en) * | 2010-12-27 | 2012-07-11 | 泰安市蓝天助剂有限公司 | Sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and preparation method thereof |
| CN105315574A (en) * | 2015-10-12 | 2016-02-10 | 浙江工业大学 | Calcium and zinc heat stabilizer for PVC and application of calcium and zinc heat stabilizer |
| CN106084294A (en) * | 2016-06-20 | 2016-11-09 | 河南师范大学 | A kind of beta diketone class organotin PVC heat stabilizer and preparation method thereof |
| CN106117263A (en) * | 2016-06-25 | 2016-11-16 | 安徽升华新奥特化工有限公司 | A kind of Methyl stannum mercaptide stabilizer of environmental protection |
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