CN105820174A - Polysubstituted thienoindole derivative and preparation method thereof - Google Patents

Polysubstituted thienoindole derivative and preparation method thereof Download PDF

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CN105820174A
CN105820174A CN201610218479.5A CN201610218479A CN105820174A CN 105820174 A CN105820174 A CN 105820174A CN 201610218479 A CN201610218479 A CN 201610218479A CN 105820174 A CN105820174 A CN 105820174A
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arh
cyclohexyl
thieno
indole
preparation
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CN105820174B (en
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李明
刘瑞娟
文丽荣
郭维斯
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D495/00Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
    • C07D495/02Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
    • C07D495/04Ortho-condensed systems

Abstract

The invention discloses a method for preparing a polysubstituted thienoindole derivative, and the method belongs to the technical field of organic synthesis. The method comprises the following steps: adding ortho-alkynyl isothiocyanate and isonitrile into a reactor; under the catalysis of nickel, heating an obtained mixture in a solvent, cooling an obtained reaction product to a room temperature after completing the reaction, extracting a system by ethyl acetate, then concentrating a filtrate by a rotary evaporator to obtain a crude product, and finally separating the crude product by a column chromatography to obtain a product. The method for preparing the polysubstituted thienoindole derivative, which is provided by the invention, is scientific and reasonable, the productivity is relatively high and the product is purified easily.

Description

A kind of preparation method of polysubstituted thiophene diindyl derivant
Technical field
The invention belongs to technical field of organic synthesis, particularly to the preparation method of a kind of polysubstituted 2H-thieno [2,3-b] indole derivatives.
Background technology
Thieno indole derivatives be a class common there is biological activity and heterocyclic compound that pharmacologically active is widely present in natural product.A lot of thieno indole derivatives have biological activity and the pharmacologically actives such as sterilization, resisting hypertension, antidepressant, antiallergic, malaria, antitumor, as 2H-thieno [2,3-b] indole derivatives can be converted into a kind of compound controlling rice seedlings activity further.
The synthesis application of thieno indole derivatives has exceeded field of medicaments, gradually extends to technical field of material chemistry, as high-performance conductive polymer and organic electroluminescence device etc. are prepared in thieno indole derivatives electrochemistry copolymerization.
Thieno indole derivatives has extensive use in these fields so that the synthesis of these compounds has the meaning of particular importance.
The preparation method of thieno indole derivatives has:
1) PeterLanger synthetic method: 3-halo chromone, beta-keto acyl amine and 1,3-indoline-2-thioketone reacts, obtains thieno indole derivatives.
2) TakashiOtani synthetic method: 2-alkyl phenyl isothiocyanate is cyclization under trifluoromethanesulfonic acid is catalyzed, and obtains thieno indole derivatives.
3) TakaoSaito synthetic method: adjacent alkynyl isothiocyanate, under the catalysis of carbonyl cobalt or molybdenum carbonyl, obtains thieno indole derivatives by Pauson-Khand reaction.
Utilizing said method to prepare thieno indole derivatives in the lab, there is obvious shortcoming: 1) synthesis step is many, complex operation, catalytic metal expensive.2) reaction is carried out under strong acid or strong alkaline condition, big for environment pollution;3) portion of reagent toxicity is big, severe reaction conditions.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of polysubstituted thiophene diindyl derivant and preparation method thereof.
A kind of polysubstituted thiophene diindyl derivant, has a structure shown in formula I:
In formula I, wherein R1Selected from cyclohexyl, normal-butyl, the tert-butyl group, 2,6-3,5-dimethylphenyl;R2Selected from fluorine atom, chlorine atom, bromine atoms, saturated three-membered ring, the tert-butyl group, thienyl, phenyl, substituted aryl, substituted radical therein is fluorine atom, chlorine atom, methyl, methoxyl group;R3Selected from hydrogen atom, fluorine atom, chlorine atom, methyl, methoxyl group;R4Selected from hydrogen atom, fluorine atom, chlorine atom, methyl.
By adjacent alkynyl isothiocyanate and isonitrile, under nickel is catalyzed, solvent obtains after reacting by heating a kind of polysubstituted thiophene diindyl derivant;This preparation method below equation II represents:
The Raney nickel selected is nickel acetylacetonate, the consumption of nickel acetylacetonate is the 0.3% of the amount of adjacent alkynyl isothiocyanate materials, and the molar ratio of adjacent alkynyl isothiocyanate and isonitrile is 1.0:1.2, and the solvent of selection is oxolane, reaction temperature is 80 DEG C, and the response time is 5h.
The invention have the benefit that the synthetic method of the polysubstituted thiophene diindyl derivant that the present invention provides is scientific and reasonable, 2H-thieno [2, the 3-b] indole derivatives obtaining having various substituent group can be synthesized;And also it is simple to have synthetic method, productivity is higher, product is prone to the features such as purification.
Accompanying drawing explanation
Fig. 1 is the compound of embodiment 5 preparation1HNMR、13CNMR collection of illustrative plates;
Fig. 2 is the compound of embodiment 7 preparation1HNMR、13CNMR collection of illustrative plates;
Fig. 3 is the compound of embodiment 10 preparation1HNMR、13CNMR collection of illustrative plates;
Detailed description of the invention
The present invention is described in more detail with specific embodiment below in conjunction with the accompanying drawings:
Test method described in following embodiment, if no special instructions, is conventional method;Described reagent and material, if no special instructions, the most commercially obtain.
Solvent used in following embodiment all processes through anhydrous and oxygen-free or adds the molecular sieve after activating before using and carries out simple process.
Embodiment 1:(Z)-N-cyclohexyl-3-phenyl-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=phenyl, R3=hydrogen atom, R4=hydrogen atom)
2-phenylacetylene base-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 235mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-3-phenyl-2H-thieno [2, the 3-b] indole-2-amine 336mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 96%.
(Z) Structural Identification of-N-cyclohexyl-3-phenyl-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=1.26 1.35 (m, 1H, CH2),1.40–1.47(m,2H,CH2),1.61–1.70(m,4H,2×CH2),1.82–1.87(m,4H,2×CH2), 3.40 3.44 (m, 1H, CH), 6.9 (t, J=7.5Hz, 1H, ArH), 7.32 (t, J=7.6Hz, 1H, ArH), 7.41 (d, J=7.6Hz, 1H, ArH), 7.51 7.55 (m, 3H, ArH), 7.60 (d, J=7.5Hz, 1H, ArH), 7.74 7.76 (m, 2H, ArH);13CNMR(CDCl3, 125MHz): δ=24.1,25.4,33.3,69.5,119.9,123.10,124.3,125.6,128.2,130.1,130.7,131.4,131.6,142.6,147.4,161.1,161.2,175.2.HRMS (ESI-TOF, [M+H]+):calcdforC22H20FN2S,345.1425,found345.1428
Embodiment 2:(Z)-N-cyclohexyl-3-(4-fluorophenyl)-2H-thieno [2,3-b] indole-2-imines (R in structural formula I1=cyclohexyl, R2=to fluorophenyl, R3=hydrogen atom, R4=hydrogen atom)
(3-fluorophenyl) acetenyl-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 253mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-3-(4-fluorophenyl)-2H-thieno [2, the 3-b] indole-2-imines 294mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 95%.
(Z) Structural Identification of-N-cyclohexyl-3-(4-fluorophenyl)-2H-thieno [2,3-b] indole-2-imines:
1HNMR(CDCl3, 500MHz): δ=1.23 1.35 (m, 1H, CH2),1.38–1.46(m,2H,CH2),1.58–1.67(m,4H,2×CH2),1.79–1.85(m,4H,2×CH2), 3.37 3.42 (m, 1H, CH), 6.98 (t, J=7.6Hz, 1H, ArH), 7.20 (t, J=8.7Hz, 2H, ArH), 7.31 (t, J=7.6Hz, 1H, ArH), 7.39 (d, J=7.7Hz, 1H, ArH), 7.54 (d, J=7.5Hz, 1H, ArH), 7.72-7.75 (m, 2H, ArH);13CNMR(CDCl3,125MHz);δ=24.1,25.5,33.4,69.4,115.5 (d, JC-F=21.6Hz), 120.0,123.0,124.4,125.5,127.4,131.7,132.8,141.3,147.3,16 1.2,161.2,163.7 (d, JC-F=251.4Hz), 175.0.HRMS (ESI-TOF, [M+H]+):calcdforC22H20FN2S,363.1331,found363.1342.
Embodiment 3:(Z)-N-cyclohexyl-5-fluoro-3-phenyl-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=phenyl, R3=fluorine atom, R4=hydrogen atom)
The fluoro-2-of 4-(phenylene-ethynylene)-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 253mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-5-fluoro-3-phenyl-2H-thieno [2, the 3-b] indole-2-amine 330mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 93%.
(Z) Structural Identification of-N-cyclohexyl-5-fluoro-3-phenyl-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=1.24 1.35 (m, 1H, CH2),1.39–1.46(m,2H,CH2),1.61–1.67(m,4H,2×CH2),1.80–1.86(m,4H,2×CH2),3.39–3.43(m,1H,CH),7.00(td,1J=8.8Hz,2J=2.4Hz, 1H, ArH), 7.28 (dd,1J=8.2Hz,2J=2.4Hz, 1H, ArH), 7.31 7.33 (m, 1H, ArH), 7.52 7.54 (m, 3H, ArH), 7.70 7.71 (m, 2H, ArH);13CNMR(CDCl3,125MHz);δ=24.0,25.5,33.4,69.5,110.7 (d, JC-F=26.3Hz), 117.4 (d, JC-F=22.3Hz), 120.2,126.8,128.4,130.4,130.6,131.1,143.9,146.8,157.2,15 9.1,160.1 (d, JC-F=244.0Hz), 160.9,174.7.HRMS (ESI-TOF, [M+H]+):calcdforC22H20FN2S,363.1331,found363.1339
Embodiment 4:(Z)-N-cyclohexyl-3-(4-methoxyphenyl)-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=p-methoxyphenyl, R3=hydrogen atom, R4=hydrogen atom)
(3-methoxyphenyl)-acetenyl-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 265mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-3-(4-methoxyphenyl)-2H-thieno [2, the 3-b] indole-2-amine 289mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 81%.
(Z) Structural Identification of-N-cyclohexyl-3-(4-methoxyphenyl)-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=1.25 1.35 (m, 1H, CH2),1.39–1.47(m,2H,CH2),1.60–1.67(m,4H,2×CH2),1.80–1.87(m,4H,2×CH2),2.44(s,3H,OCH3), 3.39-3.43 (m, 1H, CH), 6.98 (t, J=7.6Hz, 1H, ArH), 7.29 7.32 (m, 2H, ArH), 7.39 7.42 (m, 2H, ArH), 7.52 7.55 (m, 2H, ArH), 7.58 (d, J=7.4Hz, 1H, ArH);13CNMR(CDCl3,125MHz);δ=21.4,24.1,25.5,33.4,69.4,119.9,123.1,124.3,125.8,127.9,1 28.1,130.8,131.3,131.5,137.8,142.9,147.3,161.2,175.2.HRM S (ESI-TOF, [M+H]+):calcdforC23H23N2OS,375.1531,found375.1529
Embodiment 5:(Z)-N-cyclohexyl-3-(p-methylphenyl)-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=p-methylphenyl, R3=hydrogen atom, R4=hydrogen atom)
(4-tolyl)-acetenyl-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 249mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-3-(p-methylphenyl)-2H-thieno [2, the 3-b] indole-2-amine 302mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 84%.
(Z) Structural Identification of-N-cyclohexyl-3-(p-methylphenyl)-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=1.26 1.34 (m, 1H, CH2),1.39–1.46(m,2H,CH2),1.59–1.67(m,4H,2×CH2),1.80–1.86(m,4H,2×CH2),2.45(s,3H,CH3), 3.38 3.43 (m, 1H, CH), 6.98 (t, J=7.5Hz, 1H, ArH), 7.29 7.33 (m, 3H, ArH), 7.39 (d, J=7.7Hz, 2H, ArH), 7.61 (d, J=7.4Hz, 1H, ArH), 7.65 (d, J=8.0Hz, 2H, ArH);13CNMR(CDCl3,125MHz);δ=21.6,24.1,25.5,33.4,69.5,119.8,123.1,124.3,125.7,128.5,1 29.0,130.7,131.4,140.5,142.8,146.9,161.0,161.4,175.1.HRM S (ESI-TOF, [M+H]+):calcdforC23H23N2S,359.1582,found359.1576
Embodiment 6:(Z)-N-cyclohexyl-3-cyclopropyl-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=cyclopropyl, R3=hydrogen atom, R4=hydrogen atom)
1-cyclopropyl-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 199mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-3-cyclopropyl-2H-thieno [2, the 3-b] indole-2-amine 294mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 95%.
(Z) Structural Identification of-N-cyclohexyl-3-cyclopropyl-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=1.21 1.28 (m, 2H, CH2),1.34–1.46(m,3H,CH2),1.57–1.64(m,4H,2×CH2),1.71–1.75(m,2H,CH2),1.81–1.82(m,4H,2×CH2), 2.42 2.47 (m, 1H, CH), 3.28 3.32 (m, 1H, CH), 7.07 (t, J=7.5Hz, 1H, ArH), 7.29 (t, J=7.7Hz, 1H, ArH), 7.38 (d, J=7.8Hz, 1H, ArH), 7.62 (d, J=7.4Hz, 1H, ArH);13CNMR(CDCl3,125MHz);δ=11.2,13.0,23.9,25.6,33.4,68.8,119.8,122.9,124.2,125.9,13 0.3,145.6,150.0,160.6,161.0,174.5.HRMS (ESI-TOF, [M+H]+):calcdforC19H21N2S,309.1425,found309.1432
Embodiment 7:(Z)-N-cyclohexyl-3-(trimethyl silyl)-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=trimethyl is silica-based, R3=hydrogen atom, R4=hydrogen atom)
(2-isothiocyanatophenyl)-Ethynyl-trimethyl silane (1.0mmol is added in 25mL round-bottomed flask, 231mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-3-(trimethyl silyl)-2H-thieno [2, the 3-b] indole-2-amine 201mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 59%.
(Z) Structural Identification of-N-cyclohexyl-3-(trimethyl silyl)-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=0.46 (s, 9H, 3 × CH3),1.38–1.45(m,3H,CH2),1.61–1.66(m,3H,CH2),1.82–1.84(m,4H,2×CH2), 3.37 3.38 (m, 1H, CH), 7.06 (t, J=7.4Hz, 1H, ArH), 7.29 7.36 (m, 2H, ArH), 7.74 (d, J=7.5Hz, 1H, ArH);13CNMR(CDCl3,125MHz);δ=0.7,23.9,25.6,33.4,68.8,119.8,124.2,125.2,126.4,131.4,14 9.8,159.1,161.6,166.5,177.8.HRMS (ESI-TOF, [M+H]+):calcdforC19H25SiN2S,341.1508,found341.1501.
Embodiment 8:(Z)-N-cyclohexyl-6-methyl-3-phenyl-2H-thieno [2,3-b] indole-2-amine (R in structural formula I1=cyclohexyl, R2=phenyl, R3=hydrogen atom, R4=methyl)
4-methyl isophthalic acid-(phenethyl)-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 249mg), cyclohexyl isonitrile (1.2mmol, 153uL) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-cyclohexyl-6-methyl-3-phenyl-2H-thieno [2, the 3-b] indole-2-amine 334mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 91%.
(Z) Structural Identification of-N-cyclohexyl-6-methyl-3-phenyl-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=1.19 1.28 (m, 1H, CH2),1.32–1.39(m,2H,CH2),1.55–1.60(m,3H,CH2),1.73–1.79(m,4H,2×CH2),2.31(s,3H,CH3), 3.31-3.35 (m, 1H, CH), 6.71 (d, J=7.6Hz, 1H, ArH), 7.14 (s, 1H, ArH), 7.20 (s, 1H, ArH), 7.39 (d, J=7.7Hz, 1H, ArH), 7.42-7.45 (m, 3H, ArH), 7.65-7.67 (m, 2H, ArH);13CNMR(CDCl3,125MHz);δ=22.1,24.1,25.5,33.4,69.4,120.8,122.9,124.9,128.2,129.9,1 30.7,131.6,141.3,142.5,147.5,161.2,161.5,175.5.HRMS (ESI-TOF, [M+H]+):calcdforC23H23N2S,359.1582,found359.1576
Embodiment 9:(Z) and-N-normal-butyl-3-phenyl-2H-thieno [2,3-b] indole-2-amine (in structural formula I, R1=normal-butyl, R2=phenyl, R3=hydrogen atom, R4=hydrogen atom)
2-phenylene-ethynylene-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 235mg), normal-butyl isonitrile (1.2mmol, 99.8mg) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (Z)-N-normal-butyl-3-phenyl-2H-thieno [2, the 3-b] indole-2-amine 290mg more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1) and separates productivity 94%.
(Z) Structural Identification of-N-normal-butyl-3-phenyl-2H-thieno [2,3-b] indole-2-amine:
1HNMR(CDCl3, 500MHz): δ=0.97 (t, J=7.3Hz, 3H, CH3), 1.46 (hexa, J=7.6Hz, 2H, CH2), 1.79 (penta, J=7.2Hz, 2H, CH2), 3.77 (t, J=6.9Hz, 2H, CH2), 6.98 (t, J=7.5Hz, 1H, ArH), 7.31 (t, J=7.6Hz, 1H, ArH), 7.40 (d, J=7.7Hz, 1H, ArH), 7.48 7.54 (m, 3H, ArH), 7.56 (d, J=7.5Hz, 1H, ArH), 7.70 7.72 (m, 2H, ArH);13CNMR(CDCl3,125MHz);δ=13.9,19.5,20.7,32.4,60.1,111.2,120.0,123.2,124.5,125.5,1 27.8,128.3,130.2,130.5,131.2,131.7,142.5,147.5,157.8,161 .1,164.0,175.0.HRMS (ESI-TOF, [M+H]+):calcdforC20H19N2S,319.1269,found319.1258
Embodiment 10:(Z) and-N-(2,6-3,5-dimethylphenyl)-3-phenyl-2H-thieno [2,3-b] indole-2-imines (in structural formula I, R1=2,5-3,5-dimethylphenyl, R2=phenyl, R3=hydrogen atom, R4=hydrogen atom)
2-phenylacetylene base-phenyl isothiocyanate (1.0mmol is added in 25mL round-bottomed flask, 235mg), 2,5-3,5-dimethylphenyl isonitrile (1.2mmol, 113mg) with nickel acetylacetonate (0.003mmol, 0.88mg), add the oxolane that 3.0mL heavily steams, after sealing mouth, put into reaction 5h in the oil bath of 80 DEG C.After reaction completely, it is cooled to room temperature, system is extracted with ethyl acetate, then solvent is evaporated with Rotary Evaporators, residue obtains purity red solid product (the Z)-N-(2 more than 99% through column chromatography for separation (200-300 mesh silica gel) (petrol ether/ethyl acetate=20/1), 6-3,5-dimethylphenyl)-3-phenyl-2H-thieno [2,3-b] indole-2-imines 242mg separates productivity 66%.
(Z) Structural Identification of-N-(2,6-3,5-dimethylphenyl)-3-phenyl-2H-thieno [2,3-b] indole-2-imines:
1HNMR(CDCl3, 500MHz): δ=2.13 (s, 6H, 2 × CH3), 6.99 7.04 (m, 2H, ArH), 7.07 7.09 (m, 2H, ArH), 7.32 (t, J=7.6Hz, 1H, ArH), 7.38 (d, J=7.6Hz, 1H, ArH), 7.53 7.61 (m, 4H, ArH), 7.86 (d, J=6.9Hz, 2H, ArH);13CNMR(CDCl3,125MHz);δ=18.1,120.3,123.6,124.9,125.2,125.6,125.8,128.2,128.6,130 .4,130.7,132.3,141.3,148.6,149.7,161.3,168.0,175.4.HRMS (ESI-TOF, [M+H]+):calcdforC24H19N2S,367.1269,found367.1258。

Claims (3)

1. a preparation method for polysubstituted thiophene diindyl derivant, described polysubstituted thiophene diindyl derivant has a structure shown in formula I:
In formula I, wherein R1Selected from cyclohexyl, normal-butyl, the tert-butyl group, 2,6-3,5-dimethylphenyl;R2Selected from fluorine atom, chlorine atom, bromine atoms, saturated three-membered ring, the tert-butyl group, thienyl, phenyl, substituted aryl, substituted radical therein is fluorine atom, chlorine atom, methyl, methoxyl group;R3Selected from hydrogen atom, fluorine atom, chlorine atom, methyl, methoxyl group;R4Selected from hydrogen atom, fluorine atom, chlorine atom, methyl;It is characterized in that, by adjacent alkynyl isothiocyanate and isonitrile, under nickel is catalyzed, solvent obtains after reacting by heating the polysubstituted thiophene diindyl derivant shown in formula I;This preparation method below equation represents:
Preparation method the most according to claim 1, it is characterized in that selected Raney nickel is nickel acetylacetonate, the consumption of nickel acetylacetonate is the 0.3% of the amount of adjacent alkynyl isothiocyanate materials, and the molar ratio of adjacent alkynyl isothiocyanate and isonitrile is 1.0:1.2.
Preparation method the most according to claim 1, it is characterised in that selected solvent is oxolane, reaction temperature is 80 DEG C, and the response time is 5h.
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