CN106631718B - A kind of synthetic method of asymmetric conjugation diine - Google Patents

A kind of synthetic method of asymmetric conjugation diine Download PDF

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CN106631718B
CN106631718B CN201611137371.XA CN201611137371A CN106631718B CN 106631718 B CN106631718 B CN 106631718B CN 201611137371 A CN201611137371 A CN 201611137371A CN 106631718 B CN106631718 B CN 106631718B
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diine
synthetic method
asymmetric conjugation
asymmetric
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CN106631718A (en
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张武
武超婷
李倩
李佳
徐洋洋
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Anhui Normal University
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Abstract

The present invention provides a kind of synthetic methods of asymmetric conjugation diine, include the following steps:A, after mixing catalyst with Phen and highly basic, cis- alkene bromine, end-group alkyne and solvent are added in argon atmosphere, reaction 20 is stirred at reflux under conditions of 140 150 DEG C for 24 hours;B, product obtains asymmetric conjugation diine by column chromatographic isolation and purification after extraction, drying, concentration.Compared with prior art, synthetic method of the present invention is at low cost, and raw material is easy to get, and operation is more convenient, and efficient, use scope is wide, is suitble to a variety of substrate reactions, and catalyst being capable of recycling.

Description

A kind of synthetic method of asymmetric conjugation diine
Technical field
The invention belongs to technical field of organic synthesis, and in particular to a kind of synthetic method of asymmetric conjugation diine.
Background technology
Conjugation diyne is the important source material and intermediate of organic synthesis field, and starting material can be used as big for synthesizing Annulene, conjugation alkynes oligomer etc..Meanwhile or a variety of natural products and the skeleton structure with bioactive compound.Contain There are some compounds of 1,3- diine structures to be determined high efficiency anti-tumor, antibacterial, anti-inflammatory and HIV-resistant activity.Such as:From 19 carbon diacetylenic acids of traditional Chinese medicine ingredient 19- (2- furyls) -5,7- separated in Artemisia capillaris etc..
The method for the asymmetric conjugation diine of synthesis reported in document is mainly the following:
(1) 2000 year E.Negishi seminar synthesizes asymmetric 1,3- conjugation two using Pd catalysed cross coupling selectivities Alkynes.
Although the experimental method yield is higher, but needs a point three steps ability synthesis of conjugate diine, reaction is more complex.
(2) 2008 years Lei seminars report the synthesis of the asymmetric conjugation diine of palladium chtalyst.The reaction is with bromobenzene Acetylene and end-group alkyne are substrate, Pd (dba)2For catalyst, a kind of alkenyl phosphine is ligand, and triethylamine is organic weak base, and is added CuI makees co-catalyst.
The applicability of the reaction substrate is wider, has good selectivity, yield higher.But the method has used noble metal to urge Agent and Phosphine ligands, synthesis cost are high.
(3) 2009 years, Lei seminars were on the working foundation of early period, by the way that NiCl is added2·2H2O makees catalyst and adds Enter CuI and make co-catalyst, is equipped with TMEDA complexings, enabling obtain the cross-coupling products of higher yields.
Bimetallic catalyst is not used only in the experimental method, and TMEDA ligand complex is added, and reaction needs one kind Alkynes is excessive.
(4) 2012 years Ranu synthesize asymmetrical diine using the complex-catalyzed cis- bromostyrenes of Cu-HAP.Herein In reaction, trans-styryl bromide generally yields trans- eneyne product, and cis- styrene bromide is produced by elimination reaction The cross-coupling of raw alkynes and another alkynes, generates two acetylene compounds of conjugation.
The experimental method utilizes the copper complex of specific structure, the synthesis of this complex more complex.
(5) 2013 years Xie Meihua seminars reported for work nickel catalysis alkyl Grignard reagent and alkynyl sulfone cross-coupling it is anti- Asymmetric 1,3 diines should be synthesized.In the synthesis, Isosorbide-5-Nitrae-diaryl 1,3- diines can obtain moderate to good yield, and right It is relatively low (30-54%) in alkyl-substituted 1,3- diines yield.
The alkyl Grignard reagent that the experimental method uses is not unstable, easy to operate.
(6) 2014 years Ranu seminars, without ligand catalyst, pass through Cs using bimetallicp-CspCoupling synthesis is asymmetric 1,3- diines.
The experimental method substrate wide adaptability, but used bimetallic catalyst.
In conclusion the method for prior art synthesis of conjugate diine is although more, but these methods some need by compared with For complicated synthesis step;The reactant of some is unstable, and operation has certain difficulty;Some reaction time are long, and Reaction yield is relatively low;Some easily cause environmental pollution using organic phosphine drug.More importantly this kind of reaction mostly uses palladium, nickel Equal noble metals or bimetallic are catalyst, and reaction cost is not costly and recyclable, is not suitable for industrial production.
Therefore it provides a kind of novel method for synthesizing of asymmetric conjugation diine is necessary.
Invention content
The purpose of the present invention is to provide a kind of synthetic methods of asymmetric conjugation diine, make protection gas using argon gas, receive The cis- alkene bromine of rice copper oxide catalyzation and end-group alkyne directly react the asymmetric conjugation diine of preparation, and synthetic method is at low cost, and raw material is easy , operation is more convenient, and efficient, use scope is wide, is suitble to a variety of substrate reactions, and catalyst being capable of recycling.
A kind of synthetic method of asymmetric conjugation diine provided by the invention, includes the following steps:
A, after catalyst being mixed with Phen and highly basic, be added in argon atmosphere cis- alkene bromine, end-group alkyne with it is molten Agent is stirred at reflux reaction 20-24h under conditions of 140-150 DEG C;
B, product obtains asymmetric conjugation diine by column chromatographic isolation and purification after extraction, drying, concentration.
Cis- alkene bromine in step A, end-group alkyne, catalyst, highly basic, Phen molar ratio be 1:1.2-1.5:0.05- 0.1:2-2.5:0.15-0.2.
The cis- alkene bromine and the amount ratio of solvent are:1:2-4mmol/mL.
Further, relative to the cis- alkene bromine of 1mmol, the dosage 1.2-1.5mmol of the end-group alkyne, institute in step A The dosage for stating catalyst is 0.05-0.1mmol, and the dosage of the highly basic is 2-2.5mmol, and the dosage of the Phen is The dosage of 0.15-0.2mmol, the organic solvent are 2-4mL.
Cis- alkene bromine structural formula described in step A is:
Wherein R1Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、2-OCH3、4-Cl、3-Cl、2-Cl Or 4-CF3In any one.
The structural formula of end-group alkyne described in step A is:
Wherein R2Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、2-OCH3、4-Cl、3-Cl、2- Cl、4-Br、4-F、4-C(CH3)3In any one.
Catalyst described in step A is fusiformis nano cupric oxide, copper oxide nano particle, flake nano copper oxide, sea cucumber Any one of shape nano cupric oxide or flower-like nanometer copper oxide can be recycled and be recycled, wherein sea cucumber shape nano-catalytic Agent catalytic effect is especially pronounced.
The specific preparation method of various catalyst is as follows in step A:
It takes the distilled water of 40mL to be added in 100mL beakers, weighs the Cu (CH of 0.3194g3COO)2·H2O solids are placed in In beaker, made it dissolve in the case of 30 DEG C of magnetic agitations, then be slowly dropped into the NH of 1M3·H2O solution adjusts pH value, will burn Cup preservative film package is put in baking oven, is reacted under the conditions of 65 DEG C and is cooled to room temperature for 24 hours, then uses distilled water and anhydrous respectively Ethyl alcohol respectively twice of cleaning, separation centrifuge, and vacuum drying 5h can be prepared by the nano cupric oxide of different-shape under the conditions of 60 DEG C.This is anti- Middle pH is answered to obtain fusiformis nano cupric oxide for 7;PH be 8 sea cucumber shape nano cupric oxide pH be 8.5 flake nano copper oxide;PH is 9.5 obtain flower-like nanometer copper oxide.
The preparation method of copper oxide nano particle described in step A:Take the Cu (CH of 0.4525g3COO)2It is anhydrous to be dissolved in 50mL In ethyl alcohol, waits for that its dissolving is placed in the polytetrafluoroethylene (PTFE) autoclave of capacity 60mL and react 20h under the conditions of 150 DEG C, be cooled to Room temperature, then 2 times and washes of absolute alcohol 3 times, separation centrifugation are dried in vacuo to obtain black under room temperature wash with distilled water respectively Powder, i.e. copper oxide nano particle.
Highly basic described in step A is any one in sodium hydroxide, potassium hydroxide, sodium tert-butoxide or cesium carbonate.
Solvent described in step A is diethylene glycol dimethyl ether DGDE, n,N-Dimethylformamide DMF or dimethyl sulfoxide (DMSO) Any one in DMSO.
Step B is specially:Products therefrom petroleum ether, ethyl acetate are extracted, anhydrous sodium sulfate drying is concentrated under reduced pressure, Crude product is obtained, using pure petroleum ether as solvent, 1,3- of asymmetry is obtained by column chromatography for separation and is conjugated diine.
The structural formula of the asymmetric conjugation diine isWherein R1It is selected from 4-H、4-CH3、4-OCH3、3-OCH3、2-OCH3, 4-Cl, 3-Cl, 2-Cl or 4-CF3In any one, R2Selected from 4-H, 4- CH3、4-OCH3、3-OCH3、2-OCH3、4-Cl、3-Cl、2-Cl、4-Br、4-F、4-C(CH3)3In any one.
Preferably, the synthetic method of the asymmetric conjugation diine, includes the following steps:
A, after 0.05mmol sea cucumber shapes nano cupric oxide, 0.15mmol Phens and 2mmol sodium hydroxides being mixed, The cis- alkene bromines of 1mmol, 1.2mmol end-group alkynes and 3mL DGDE are added in argon atmosphere to be stirred at reflux under conditions of 145 DEG C instead It should for 24 hours;
B, product obtains asymmetric conjugation diine by petroleum ether column chromatographic isolation and purification after extraction, drying, concentration.
Compared with prior art, the present invention uses nanometer copper oxide catalyst, simple easily system, performance to stablize, catalytic effect Well and it can recycle;Raw material is reacted with cis- bromo alkene and end-group alkyne, and reaction condition is mild, need not use gold Belong to Grignard Reagent, also without using noble metal or bimetallic catalyst;This reaction system is of low cost, is simple and efficient, environment friend It is good, 1,3 diines of asymmetric conjugation of high yield can be synthesized, industrial production is conducive to.
Description of the drawings
Fig. 1 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 1;
Fig. 2 is the carbon-13 nmr spectra figure of embodiment 1;
Fig. 3 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 2;
Fig. 4 is the carbon-13 nmr spectra figure of embodiment 2;
Fig. 5 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 3;
Fig. 6 is the carbon-13 nmr spectra figure of embodiment 3;
Fig. 7 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 4;
Fig. 8 is the carbon-13 nmr spectra figure of embodiment 4;
Fig. 9 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 5;
Figure 10 is the carbon-13 nmr spectra figure of embodiment 5;
Figure 11 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 6;
Figure 12 is the carbon-13 nmr spectra figure of embodiment 6;
Figure 13 is the hydrogen nuclear magnetic resonance spectrogram of embodiment 7;
Figure 14 is the carbon-13 nmr spectra figure of embodiment 7;
Figure 15 is the reaction equation of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, it is not limited to these embodiments.In embodiment, the alkynes of different substituents, Phen, sodium hydroxide, potassium hydroxide, sodium tert-butoxide, cesium carbonate, DGDE, DMF, DMSO have for Chinese medicines group chemical reagent Limit Products.
Embodiment 1
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the fusiformis nano cupric oxide of 0.05mmol, 0.15mmol Phens are weighed respectively, and 2mmol sodium hydroxides are put into In the reaction tube of clean dried, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, in argon Cis--the 1- of 1mmol (2- bromo vinyls) -4- tert-butyl benzenes, 1.2mmol 1- acetenyl -4- methoxies are sequentially added under gas shielded Base benzene and 3mL diethylene glycol dimethyl ethers are stirred at reflux 20 hours under the conditions of 140 DEG C;
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried with anhydrous magnesium sulfate, after concentration, solvent column chromatography for separation is made with petroleum ether and purifies to obtain white solid i.e. 1- tertiary butyls -4- [4- (4- methoxyphenyls) butane -1,3- diynyl] benzene, yield 80%, fusing point are 88-90 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR(300MHz,CDCl3):δ 7.48-7.45 (m, 4H), 7.35 (d, J=8.2Hz, 2H), 6.86 (d, J= 8.6Hz,2H),3.82(s,3H),1.34(s,9H);
The carbon-13 nmr spectra data of product:
13C NMR(75MHz,CDCl3):δ160.3,152.5,134.1,132.2,125.5,118.9,114.1,113.8, 81.4,79.1,73.5,72.9,55.4,34.9,31.1。
Embodiment 2
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the sea cucumber shape nano cupric oxide of 0.05mmol, 0.15mmol Phens are weighed respectively, and 2mmol potassium hydroxide is put In the reaction tube for entering clean dried, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, Cis--the 1- of 1mmol (2- bromo vinyls) -4- methylbenzenes are sequentially added under argon gas protection, 1.2mmol 1- acetenyls -4- is fluorine-based Benzene and 3mL n,N-Dimethylformamide are stirred at reflux 20 hours under the conditions of 140 DEG C.
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried, is concentrated with anhydrous magnesium sulfate.Make solvent column chromatography for separation with petroleum ether and purifies to obtain the fluoro- 4- of white solid i.e. 1- [4- (4- Aminomethyl phenyl) butane -1,3- diynyl] benzene, yield 85%, fusing point is 148-150 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR δ 7.53-7.49 (m, 2H), 7.42 (d, J=7.2Hz, 2H), 7.14 (d, J=6.3Hz, 2H), 7.06- 7.00(m,2H),2.36(s,3H);
The carbon-13 nmr spectra data of product:
13C NMR(CDCl3,75MHz):δ 163.0 (d, J=240.9Hz), 139.6 (d, J=15.3Hz), 134.5, 132.4,129.3,118.7 (d, J=19.1Hz), 115.9 (d, J=21.8Hz), 81.9,80.4,73.8,73.5,21.7.
Embodiment 3
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the flake nano copper oxide of 0.1mmol is weighed respectively, and 0.3mmol Phens, 4mmol sodium hydroxides are put into clean Only in dry reaction tube, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, in argon gas Cis--the 1- of 2mmol (2- bromo vinyls) benzene, the fluorine-based benzene of 2.4mmol 1- acetenyls -4- and 4mL diethyls are sequentially added under protection Glycol dimethyl ether is stirred at reflux 20 hours under the conditions of 140 DEG C;
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried, is concentrated with anhydrous magnesium sulfate.Making the i.e. white solid i.e. 1- of solvent column chromatography for separation purification with petroleum ether, [(4- is fluorine-based by 4- Phenyl) butane -1,3- diynyl] benzene, yield 61%, fusing point is 121-123 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR(CDCl3,300MHz):δ 7.53 (d, J=5.3Hz, 4H), 7.36 (s, 3H), 7.04 (t, J=8.4Hz, 2H);
The carbon-13 nmr spectra data of product:
13C NMR(CDCl3,75MHz):δ 163.0 (d, J=250.5Hz), 134.5 (d, J=8.3Hz), 132.5, 129.2,128.4,121.6,117.9 (d, J=3.0Hz), 115.8 (d, J=22.5Hz), 81.5,80.4,73.7,73.7.
Embodiment 4
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the flower-like nanometer copper oxide of 0.5mmol, 1.5mmol Phens are weighed respectively, and 20mmol sodium hydroxides are put into In the reaction tube of clean dried, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times.In argon Cis--the 1- of 10mmol (2- bromo vinyls) -4- methoxybenzenes, 12mmol phenylacetylenes and 20mL diethyls are sequentially added under gas shielded Glycol dimethyl ether is stirred at reflux 20 hours under the conditions of 150 DEG C.
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 40mL petroleum ethers, and by gained organic phase It is dried, is concentrated with anhydrous magnesium sulfate.Make solvent column chromatography for separation with petroleum ether and purifies to obtain white solid i.e. 1- [4- (4- methoxies Base phenyl) butane -1,3- diynyl] benzene, yield 61%, fusing point is 93-94 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR(CDCl3,300MHz):δ 7.46-7.53 (m, 4H), 7.35 (s, 3H), 6.86 (d, J=8.2Hz, 2H), 3.83(s,3H);
The carbon-13 nmr spectra data of product:
13C NMR(CDCl3,75MHz):δ=160.3,134.0,132.3,129.0,128.4,121.9,114.1, 113.6,81.8,81.0,74.2,72.7,55.2.
Embodiment 5
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the sea cucumber shape nano cupric oxide of 0.5mmol, 1.5mmol Phens are weighed respectively, and 20mmol sodium hydroxides are put In the reaction tube for entering clean dried, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, Cis--the 1- of 10mmol (2- bromo vinyls) -4- methylbenzenes are sequentially added under argon gas protection, 12mmol 1- acetenyls -4- is fluorine-based Benzene and 20mL dimethyl sulfoxide (DMSO)s are stirred at reflux 20 hours under the conditions of 140 DEG C;
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried, is concentrated with anhydrous magnesium sulfate.Make solvent column chromatography for separation with petroleum ether and purifies to obtain the fluoro- 4- of white solid i.e. 1- [4- (4- Aminomethyl phenyl) butane -1,3- diynyl] benzene, yield 78%, fusing point is 148-150 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR δ 7.53-7.49 (m, 2H), 7.42 (d, J=7.2Hz, 2H), 7.14 (d, J=6.3Hz, 2H), 7.06- 7.00(m,2H),2.36(s,3H);
The carbon-13 nmr spectra data of product:
13C NMR(CDCl3,75MHz):δ 163.0 (d, J=240.9Hz), 139.6 (d, J=15.3Hz), 134.5, 132.4,129.3,118.7 (d, J=19.1Hz), 115.9 (d, J=21.8Hz), 81.9,80.4,73.8,73.5,21.7.
Embodiment 6
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the fusiformis nano cupric oxide of 0.025mmol, 0.075mmol Phens are weighed respectively, and 1mmol sodium tert-butoxides are put In the reaction tube for entering clean dried, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, Cis--the 1- of 0.5mmol (2- bromo vinyls) -4- chloro benzene, -4 first of 0.6mmol 1- acetenyls are sequentially added under argon gas protection Oxygroup benzene and 2mL diethylene glycol dimethyl ethers are stirred at reflux 24 hours under the conditions of 140 DEG C.
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried, is concentrated with anhydrous magnesium sulfate.With petroleum ether make solvent column chromatography for separation purify faint yellow solid i.e.
1- chloro- 4-[4- (4- methoxyphenyls) butane-1,3- diynyl] benzene, yield 80%, fusing point are 160-162 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR(300MHz,CDCl3):δ 7.49-7.43 (m, 4H), 7.30 (d, J=9.0Hz, 2H), 6.87 (d, J= 9.0Hz,2H),3.83(s,3H).
The hydrogen nuclear magnetic resonance modal data of product:
13C NMR(75MHz,CDCl3):δ160.1,135.1,134.2,133.6,128.8,120.5,114.2,113.5, 82.4,79.8,75.2,72.5,55.4.
Embodiment 7
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the copper oxide nano particle of 0.1mmol, 0.15mmol Phens are weighed respectively, and 2mmol cesium carbonates are put into clean Only in dry reaction tube, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, in argon gas - 4 chloro benzene of the cis- -1- of 1mmol (2- bromo vinyls), 1.2mmol phenylacetylenes and 3mL diethylene glycols two are sequentially added under protection Methyl ether is stirred at reflux 20 hours under the conditions of 150 DEG C;
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried, is concentrated with anhydrous magnesium sulfate.Make solvent column chromatography for separation with petroleum ether and purifies to obtain white solid i.e. 1- [4- (4- chloros Phenyl) butane -1,3- diynyl] benzene, yield 80%, fusing point is 151-152 DEG C.
Product structure formula:
The hydrogen nuclear magnetic resonance modal data of product:
1H NMR(300MHz,CDCl3):δ7.54-7.30(m,9H).
The carbon-13 nmr spectra data of product:
13C NMR(75MHz,CDCl3):δ135.4,133.7,132.5,128.9,128.5,121.6,120.3,82.1, 80.3,74.9,73.6.
Embodiment 8
A kind of synthetic method of asymmetric conjugation diine, includes the following steps:
A, the flower-like nanometer copper oxide of 0.05mmol, 0.15mmol Phens are weighed respectively, and 2mmol potassium hydroxide is put into In the reaction tube of clean dried, reaction tube is placed in anhydrous and oxygen-free system, vacuumize and is passed through argon gas cycle three times, in argon Cis--the 1- of 1mmol (2- bromo vinyls) -4- methoxybenzenes, the tertiary fourths of 1.2mmol 1- acetenyls -4- are sequentially added under gas shielded Base benzene and 3mL diethylene glycol dimethyl ethers are stirred at reflux 20 hours under the conditions of 140 DEG C;
B, stop reaction postcooling to room temperature, with petroleum ether extraction 3 times, each 10mL petroleum ethers, and by gained organic phase It is dried with anhydrous magnesium sulfate, concentrates, solvent column chromatography for separation is made with petroleum ether and purifies to obtain white solid i.e. 1- tertiary butyls -4- [4- (4- methoxyphenyls) butane -1,3- diynyl] benzene, yield 80%, fusing point are 88-90 DEG C.
Product structure formula:
1H NMR(300MHz,CDCl3):δ 7.48-7.45 (m, 4H), 7.35 (d, J=8.2Hz, 2H), 6.86 (d, J= 8.6Hz,2H),3.82(s,3H),1.34(s,9H);
13C NMR(75MHz,CDCl3):δ160.3,152.5,134.1,132.2,125.5,118.9,114.1,113.8, 81.4,79.1,73.5,72.9,55.4,34.9,31.1。

Claims (11)

1. a kind of synthetic method of asymmetric conjugation diine, which is characterized in that the synthetic method includes the following steps:
A, after mixing catalyst with Phen and highly basic, cis- alkene bromine, end-group alkyne and solvent are added in argon atmosphere, Reaction 20-24h is stirred at reflux under conditions of 140-150 DEG C;
B, product obtains asymmetric conjugation diine by column chromatographic isolation and purification after extraction, drying, concentration;
Cis- alkene bromine in step A, end-group alkyne, catalyst, highly basic, Phen molar ratio be 1:1.2-1.5:0.05-0.1: 2-2.5:0.15-0.2;
Catalyst described in step A is fusiformis nano cupric oxide, copper oxide nano particle, flake nano copper oxide, sea cucumber shape are received Rice copper oxide or flower-like nanometer copper oxide in any one.
2. the synthetic method of asymmetric conjugation diine according to claim 1, which is characterized in that described in step step A Cis- alkene bromine structural formula be:
Wherein R1Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、2-OCH3, 4-Cl, 3-Cl, 2-Cl or 4- CF3In any one.
3. the synthetic method of asymmetric conjugation diine according to claim 1 or 2, which is characterized in that held described in step A The structural formula of base alkynes is:
Wherein R2Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、2-OCH3、4-Cl、3-Cl、2-Cl、4- Br、4-F、4-C(CH3)3In any one.
4. the synthetic method of asymmetric conjugation diine according to claim 1, which is characterized in that highly basic described in step A For any one in sodium hydroxide, potassium hydroxide, sodium tert-butoxide or cesium carbonate.
5. the synthetic method of asymmetric conjugation diine according to claim 1, which is characterized in that solvent described in step A For any one in diethylene glycol dimethyl ether DGDE, n,N-Dimethylformamide DMF or dimethyl sulfoxide (DMSO) DMSO.
6. being conjugated the synthetic method of diine according to claim 1,2,4 or 5 any one of them asymmetry, which is characterized in that institute The synthetic method for stating asymmetric conjugation diine, includes the following steps:
A, after mixing 0.05mmol sea cucumber shapes nano cupric oxide, 0.15mmol Phens and 2mmol sodium hydroxides, in argon gas The cis- alkene bromines of 1mmol are added in atmosphere, 1.2mmol end-group alkynes are stirred at reflux under conditions of 145 DEG C with 3mL DGDE and react 24h;
B, product obtains asymmetric conjugation diine by petroleum ether column chromatographic isolation and purification after extraction, drying, concentration.
7. the synthetic method of asymmetric conjugation diine according to claim 3, which is characterized in that the asymmetric conjugation two The synthetic method of alkynes, includes the following steps:
A, after mixing 0.05mmol sea cucumber shapes nano cupric oxide, 0.15mmol Phens and 2mmol sodium hydroxides, in argon gas The cis- alkene bromines of 1mmol are added in atmosphere, 1.2mmol end-group alkynes are stirred at reflux under conditions of 145 DEG C with 3mL DGDE and react 24h;
B, product obtains asymmetric conjugation diine by petroleum ether column chromatographic isolation and purification after extraction, drying, concentration.
8. the synthetic method of asymmetric conjugation diine according to claim 1, which is characterized in that step B is specially:By institute Product petroleum ether, ethyl acetate extraction are obtained, anhydrous sodium sulfate drying is concentrated under reduced pressure, obtains crude product, is to be unfolded with pure petroleum ether Agent obtains 1,3- of asymmetry by column chromatography for separation and is conjugated diine.
9. being conjugated the synthetic method of diine according to claim 1,2,4,5,7 or 8 any one of them asymmetry, feature exists In the structural formula of the asymmetric conjugation diine isWherein R1Selected from 4-H, 4- CH3、4-OCH3、3-OCH3、2-OCH3, 4-Cl, 3-Cl, 2-Cl or 4-CF3In any one, R2Selected from 4-H, 4-CH3、4- OCH3、3-OCH3、2-OCH3、4-Cl、3-Cl、2-Cl、4-Br、4-F、4-C(CH3)3In any one.
10. the synthetic method of asymmetric conjugation diine according to claim 3, which is characterized in that the asymmetric conjugation The structural formula of diine isWherein R1Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、 2-OCH3, 4-Cl, 3-Cl, 2-Cl or 4-CF3In any one, R2Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、2-OCH3、 4-Cl、3-Cl、2-Cl、4-Br、4-F、4-C(CH3)3In any one.
11. the synthetic method of asymmetric conjugation diine according to claim 6, which is characterized in that the asymmetric conjugation The structural formula of diine isWherein R1Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、 2-OCH3, 4-Cl, 3-Cl, 2-Cl or 4-CF3In any one, R2Selected from 4-H, 4-CH3、4-OCH3、3-OCH3、2-OCH3、 4-Cl、3-Cl、2-Cl、4-Br、4-F、4-C(CH3)3In any one.
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