CN101575329B - Preparation method of tetrahydrothiophene-3-ketone and intermediate - Google Patents

Preparation method of tetrahydrothiophene-3-ketone and intermediate Download PDF

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CN101575329B
CN101575329B CN2009102032595A CN200910203259A CN101575329B CN 101575329 B CN101575329 B CN 101575329B CN 2009102032595 A CN2009102032595 A CN 2009102032595A CN 200910203259 A CN200910203259 A CN 200910203259A CN 101575329 B CN101575329 B CN 101575329B
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acid
ketone
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thiophene
butanone
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蒋晨
汤启明
郭子维
周旭东
梁杰
陈小勇
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Fu'an Pharmaceutical (Group) Limited by Share Ltd
Fu'an Pharmaceutical Group Pharmaceutical Co., Ltd. Chongqing Bosheng
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Abstract

The invention discloses a new method for preparing an important intermediate tetrahydrothiophene-3-ketone of ticarcillin sodium and an intermediate of tetrahydrothiophene-3-ketone. The method is characterized in that chloracetyl chloride is taken as a starting material to prepare tetrahydrothiophene-3-ketone by four steps: reaction of ethylene addition, carbonyl protection, cyclization and deprotection. Particularly, the method comprises the following steps: ethylene gas is introduced into chloracetyl chloride, then cyclization reaction is carried out on the obtained 1, 4-glycol protecting carbonyl used for dichloro butanone; finally deprotection is carried out to obtain the subject of tetrahydrothiophene-3-ketone. Compared with the previous process, the invention has the advantages of novel design, high yield, cheap and accessible material, low cost and the like; in addition, the invention has safe and simple operation, and is a new process with industrialized prospect.

Description

A kind of preparation method of tetrahydro thiophene-3-ketone and intermediate
Technical field
The present invention relates to field of medicine and chemical technology, particularly relate to a kind of novel process and intermediate thereof for preparing Ticarcillin Disodium important intermediate tetrahydro thiophene-3-ketone.
Background technology
Ticarcillin Disodium is the penbritin class microbiotic by Britain Beecham company exploitation, from 1986 since the listing of states such as the U.S., New Zealand, recorded by American Pharmacopeia, European Pharmacopoeia, British Pharmacopoeia, Japanese Pharmacopoeia etc. at present.Its chemical name is: (2S, 5R, 6R)-3,3-dimethyl-6-[2-carboxyl-2-(2-thienyl) acetamido]-7-oxo-4-thia-1-azabicyclo [3.2.0] heptane-2-carboxylic acid disodium salt, structural formula is as follows:
Figure G2009102032595D00011
Because of this product has advantages such as curative effect height, side effect be low, clinical use is very extensive.But, because its poor stability, the humidity of environment and potential of hydrogen all compare responsive, difficulty is bigger in the production, so how to select suitable production technique particularly important.
The synthetic route of Ticarcillin Disodium mainly contains two at present: 1) be starting raw material with the chloroacetyl chloride, synthetic intermediate 2-(3-thienyl) propanedioic acid (ester) generates target product with the 6-APA reaction again.This method has cost height, characteristics that yield is low, and the by product of following is many, therefore on producing and inapplicable; 2) be starting raw material with methyl acrylate (ethyl ester), become cyclizing hydrolysis under the alkaline condition, through the synthetic target product of important intermediate tetrahydro thiophene-3-ketone.This route is comparatively succinct, and it is classical to relate to reaction, is that starting raw material tetrahydrobiopterin synthesis thiophene-3 ketone has many shortcomings (subsequent content will be done detailed description) with methyl acrylate (ethyl ester) still, therefore selects suitable explained hereafter tetrahydro thiophene-3-ketone of crucial importance.And as the important intermediate of Ticarcillin Disodium, tetrahydro thiophene-3-ketone is also used in foodstuff additive in a large number, and market demand is very big.
The synthetic route of tetrahydro thiophene-3-ketone mainly contains following several:
People such as Paul Karrer disclose the synthetic method of following tetrahydro thiophene-3-ketone in the U.S. Pat 2408518 of nineteen forty-six mandate.Annulation directly takes place with 1-chloro-4-iodine butanone and sodium sulphite and promptly gets target product in the applicant, this method cost height, and the raw material 1-chloro-4-iodine butanone that relates to preparation difficulty can not satisfy industrial production requirement.
At J.Am.Chem.Soc.1957,79, in 1972-1975 one literary composition, the author is a starting raw material with ethyl thioglycolate and methyl acrylate, through the Michael addition, the Dickemann cyclization, hydrolysis decarboxylation promptly obtains tetrahydro thiophene-3-ketone under the acidic conditions.
Figure G2009102032595D00022
This method report is the most popular method of tetrahydrobiopterin synthesis thiophene-3-ketone in all bibliographical informations early.But because the pungency of starting raw material ethyl thioglycolate/methyl esters and methyl acrylate/ethyl ester is bigger, be unfavorable for Workshop Production, and use ether to make solvent on producing, to have very big danger; Add that total recovery also only has 40-50%, produce a large amount of waste water in the production process.Therefore, although this route is widely used at home and abroad, face huge environmental protection pressure.
European patent EP 0127121 has also been reported the method for a kind of tetrahydrobiopterin synthesis thiophene-3-ketone, and it is to be starting raw material with Thiovanic acid and vinylformic acid, obtains Michael adduct, cyclization under the hydrated barta effect, high temperature decarboxylation then under ammonium acetate catalysis.
Figure G2009102032595D00023
Recueildes Travaux Chimiques des pays-bas 89 (9/10), 1160-1168 has also reported same method in 1,964 one literary compositions, yield has only 44%.Though this route is shorter, several weak points are arranged: a large amount of hydrated bartas is used in reaction, must produce the barium salt of severe toxicity, and generate a large amount of black polymers, is difficult for handling, and brings very big harm to environment; And 250 ℃ hot conditions is too harsh on producing.
In sum, tetrahydro thiophene-3-ketone technology that can really adapt to suitability for industrialized production of exploitation is of crucial importance.
Summary of the invention
The invention provides the novel process of the important intermediate tetrahydro thiophene-3-ketone of synthetic Ticarcillin Disodium, it has characteristics such as simple to operate, that yield is higher, cost is low, environmental pollution is little, is the novel method of a suitable industrial mass production.
The novel process that the purpose of this invention is to provide the important intermediate tetrahydro thiophene-3-ketone of a synthetic Ticarcillin Disodium.
Another object of the present invention provides a kind of tetrahydro thiophene-3-ketone synthetic intermediate that is used for.
In one embodiment of the present invention, the invention provides a kind of method of synthetic Ticarcillin Disodium important intermediate tetrahydro thiophene-3-ketone, comprise the steps:
A) chloroacetyl chloride and ethene are reacted under lewis acid catalyst (for example aluminum chloride, zinc chloride, boron trifluoride etc.) catalysis, generate 1,4-dichloro butanone;
B) with organic pure R 1OH and R 2OH or HOR 1-R 2OH or this type of pure TMS (trimethyl silicon based) ether, acid anhydrides, protection such as trimethyl orthoformate (ethyl ester) 1, the ketone carbonyl of 4-dichloro butanone obtains formula I compound, here, R 1And R 2Be the alkyl of C1-C6 independently of one another; Z does not exist among the formula I, or R 1With R 2Between singly-bound;
Figure G2009102032595D00031
C), obtain formula II and close the ring product with resulting formula I compound of step b) and sulfide M S (for example alkali metalsulphide or hydrogen sulfide) reaction; Z, R among its Chinese style II 1And R 2Definition is as step b);
Figure G2009102032595D00041
D) formula II compound hydrolysis under acidic conditions gets tetrahydro thiophene-3-ketone, preferably, and heating hydrolysis under acidic conditions.
In a kind of embodiment preferred of the present invention, the preparation method of tetrahydro thiophene-3-ketone provided by the present invention, preferably; wherein the agent of carbonyl-protection described in the step b) is organic alcohol and this type of pure TMS (trimethyl silicon based) ether; acid anhydrides, trimethyl orthoformate (ethyl ester) etc., organic pure R 1OH, R 2OH or HOR 1-R 2R among the OH 1, R 2Be methyl, ethyl, propyl group or butyl etc. independently of one another; Used protective material and 1, the mol ratio of 4-dichloro butanone is 1: 0.5-10, preferred 1: 1-5; Described being reflected under the heating condition carried out, and temperature of reaction is 50-150 ℃, preferred 50-100 ℃.
In a kind of embodiment preferred of the present invention, the preparation method of tetrahydro thiophene-3-ketone provided by the present invention, preferably, wherein the basic solution of step c) Chinese style I compound and sulfide M S or hydrogen sulfide in molar ratio 1: the 1-10 reaction, here, described basic solution is the aqueous solution of alkali metal hydroxide, and concentration is 0.01-6mol.L -1, preferred 1-3mol.L -1Sodium hydroxide, potassium hydroxide solution; Temperature of reaction is 100-200 ℃, preferred 120-160 ℃.
In a kind of embodiment preferred of the present invention, the preparation method of tetrahydro thiophene-3-ketone provided by the present invention, preferably, wherein the reaction of step c) is carried out in organic solvent, be selected to described organic solvent indefiniteness alcohol, ethylene glycol or the N of C1-C4, dinethylformamide equal solvent, or any mixture of two or more solvent wherein.
In a kind of embodiment preferred of the present invention; the preparation method of tetrahydro thiophene-3-ketone provided by the present invention; preferably; wherein the catalyzer indefiniteness ground used of the selected deprotection base of step d) is mineral acids such as sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, Hydrogen bromide, perchloric acid or Periodic acid; perhaps formic acid, acetate, trifluoroacetic acid; trichoroacetic acid(TCA), organic acids such as oxalic acid, chlorsulfonic acid, solid acid or tosic acid also can comprise Bi (NO 3) xH 2O, Ce (OTf) 3, InCl 3Deng salt, temperature of reaction is 0-100 ℃, preferred 50-80 ℃.
In a kind of embodiment preferred of the present invention, the preparation method of tetrahydro thiophene-3-ketone provided by the present invention, preferably, step a) is to d) the used extraction solvent of wherein arbitrary step is sherwood oil, methylene dichloride, ethylene dichloride, chloroform, ethyl acetate, propyl acetate, ethyl formate, or toluene etc., the perhaps mixture of above two or more organic solvent.
More preferably, the invention provides the method for a kind of tetrahydrobiopterin synthesis thiophene-3-ketone, comprise the steps:
A) chloroacetyl chloride and ethene are reacted under aluminum chloride catalysis, generate 1,4-dichloro butanone;
B) spent glycol protection 1 in the presence of acid catalyst, the ketone carbonyl of 4-dichloro butanone obtains 2-(2-chloroethyl)-2-chloromethyl-1, the 3-dioxolane;
C) with 2-(2-chloroethyl)-2-chloromethyl-1,3-dioxolane and sodium sulphite reaction obtain closing ring product 1,4-dioxy-7-thiophene volution nonane;
D) 1, heating hydrolysis under 4-dioxy-7-thiophene volution nonane acidic conditions gets tetrahydro thiophene-3-ketone.
The invention provides a kind of preparation method of synthetic Ticarcillin Disodium important intermediate tetrahydro thiophene-3-ketone, particularly preferably, it comprises the steps:
A), generate 1,4-dichloro butanone with chloroacetyl chloride and ethylene reaction;
B) under 50-100 ℃ of condition, ethylene glycol protection 1, the ketone carbonyl of 4-dichloro butanone; Ethylene glycol and 1 wherein, 4-dichloro butanone is by 1: the molar ratio reaction of 1-5;
C) with 2-(2-chloroethyl)-2-chloromethyl-1,3-dioxolane and sodium sulphite in molar ratio 1: the 1-10 reaction obtains closing ring product 1,4-dioxy-7-thiophene volution nonane;
D) heat 1 under hydrochloric acid catalysis, 4-dioxy-7-thiophene volution nonane makes it slough protecting group and obtains tetrahydro thiophene-3-ketone.
In another embodiment of the invention, the invention provides the formula I compound that is used for tetrahydrobiopterin synthesis thiophene-3-ketone:
Figure G2009102032595D00051
Here, R 1And R 2Be the alkyl of C1-C6 independently of one another; Z does not exist, or R 1With R 2Between singly-bound;
Preferably, formula I compound is: 1, and 4-two chloro-2, the 2-dimethoxy-butane, 1,4-two chloro-2,2-diethoxy butane, or 2-(2-chloroethyl)-2-chloromethyl-1, the 3-dioxolane more preferably is 2-(2-chloroethyl)-2-chloromethyl-1, the 3-dioxolane.
The invention provides a kind of novel process of simple to operate, pollution is little, yield is high tetrahydrobiopterin synthesis thiophene-3-ketone.Reaction raw materials is cheap and easy to get, simple to operate, quality of finished product good, is an operational path that industrial prospect is arranged very much.
The invention also discloses a kind of tetrahydro thiophene-3-ketone that adopts aforesaid method to make is the technology of the synthetic Ticarcillin Disodium of starting raw material, and route is as follows:
Figure G2009102032595D00061
Characteristics of the present invention are, are starting material with chloroacetyl chloride cheap and easy to get, amount to four-step reaction by ethene addition, carbonyl-protection, cyclization, deprotection, and total recovery is up to 75.2%.Compare with prior art, the present invention has following advantage: 1.. and raw material is cheap and easy to get: for example the chloroacetyl chloride of Cai Yonging is done initial raw material, and its market price is no more than 20 yuan/kg, greatly reduces production cost; 2.. the waste liquid that produces in the production process is less, has reduced the trouble that the three wastes are handled, and also greatly reduces the pressure of environmental protection treatment waste liquid simultaneously; 3.. easy and simple to handle, reaction all is conventional operational condition, need not severe condition, and is lower to equipment requirements, and first three step all need not to handle and promptly can be used for step direct reaction down; 4.. the yield height, Atom economy is good: total recovery is up to 75%, and the purity of product can reach 98.5%; 5.. quality of finished product good, the tetrahydro thiophene-3-ketone synthetic Ticarcillin Disodium foreign matter content that adopts this technology to make is low, by product is few, steady quality is easy to control, is suitable for the Ticarcillin Disodium suitability for industrialized production.
Specific implementation method
By following examples the present invention is described better, but the present invention is not limited by the following examples:
Embodiment 1:
In the dry reaction bottle, add aluminum trichloride (anhydrous) 128g, methylene dichloride 170ml.Stirring also is cooled to-5 ℃, slowly drips chloroacetyl chloride 170g, and feeds ethylene gas 50L.Logical finishing, reaction solution is poured in the 600g frozen water, (2 * 300ml), the merging organic phase is with the salt pickling (2 * 200ml) of 2mol/l with dichloromethane extraction for water, saturated common salt washing (1 * 200ml), anhydrous sodium sulfate drying, concentrate 1,4-dichloro butanone crude product 186.2g, yield 90%, purity>95%.This intermediate need not purifying, is directly used in the next step.
Embodiment 2:
In 500 milliliters of round-bottomed flasks, add 1,4-dichloro butanone 33.8g, ethylene glycol 14.8g, tosic acid monohydrate 3.3g adds 100 milliliters of toluene again and stirs and make it down to dissolve.Reflux 4 hours is cooled to room temperature, and reaction solution is poured in the frozen water, tells organic layer, water again with toluene extraction (2 * 100ml), merge organic layer, anhydrous sodium sulfate drying, concentrating under reduced pressure gets 2-(2-chloroethyl)-2-chloromethyl-1,3-dioxolane crude product 45.1g, yield 100%.This intermediate need not purifying, is directly used in next step reaction. 1H-NMR(300MHz,CDCl 3)δ:3.95(s,4H),2.67(t,2H),2.68(s,2H),2.13(m,2H)。MS for C 6H 10O 2Cl 2(M+Na): theoretical value: 207.01 measured values: 207.16
Embodiment 3:
In the 250ml three-necked bottle, add 9g ethylene glycol, be heated to backflow.Drip 45.1g 2-(2-chloroethyl)-2-chloromethyl-1 simultaneously, 3-dioxolane, the 100ml aqueous solution of 64.4g sodium sulphite.Remain reaction system in the dropping process and be the vigorous reflux state.About 1h dropwises, and continues to reflux 2 hours, is cooled to room temperature.Add 10g sodium-chlor and make water become saturated solution, ethyl acetate extraction (4 * 100ml).Merge organic phase, drying, concentrating under reduced pressure gets 1,4-dioxy-7-thiophene volution nonane crude product 33.8g, yield 95%.This intermediate need not purifying, is directly used in next step reaction.
Embodiment 4
In the 250ml round-bottomed flask, add 33.8g 1,4-dioxy-7-thiophene volution nonane, 10ml concentrated hydrochloric acid and 20ml water, stirring reaction 4h under 70 ℃ of water-baths is cooled to room temperature, adds an amount of sodium-chlor and makes water saturated, ethyl acetate extraction (3 * 50ml), merge organic layer, anhydrous sodium sulfate drying, concentrating under reduced pressure, the underpressure distillation of gained oily matter (51-52 ℃/3mmHg), get water white transparency oily thing tetrahydro thiophene-3-ketone 27g, yield 88%, purity>98.5% (GC). 1H-NMR (400MHz, CDCl 3) δ: 2.50-2.74 (m, 2H), 2.85-3.03 (m, 2H), 3.30 (s, 1H); MS (measured value): 102.20; Ultimate analysis C 4H 6SO experimental value (calculated value): C47.11% (47.03%), H5.80% (5.92%), S31.28% (31.39%). 1H-NMR(300MHz,CDCl 3)δ:3.80-3.92(m,4H),3.61(s,2H),3.42(m,2H),1.85(t,2H)。

Claims (11)

1. the method for tetrahydrobiopterin synthesis thiophene-3-ketone comprises the steps:
A) chloroacetyl chloride and ethene are reacted under lewis acid catalyst catalysis, generate 1,4-dichloro butanone;
B) with carbonyl-protection agent protection 1, the ketone carbonyl of 4-dichloro butanone obtains formula I compound, here, and R 1And R 2Be the alkyl of C1-C6 independently of one another; Z does not exist among the formula I, or R 1With R 2Between singly-bound;
Figure FSB00000334603900011
C), obtain formula II and close the ring product with resulting formula I compound of step b) and sulfide M S reaction; Z, R among its Chinese style II 1And R 2Definition is as step b), and here, described sulfide M S is alkali metalsulphide or hydrogen sulfide basic solution;
Figure FSB00000334603900012
D) formula II compound hydrolysis under acidic conditions gets tetrahydro thiophene-3-ketone.
2. method according to claim 1, wherein the agent of carbonyl-protection described in the step b) is organic alcohol or its trimethyl silicon based ether, trimethyl orthoformate or ethyl ester; Described organic alcohol is R 1OH, R 2OH or HOR 1-R 2OH, wherein R 1, R 2Definition is as claim 1.
3. method according to claim 2, wherein said carbonyl-protection agent and 1, the mol ratio of 4-dichloro butanone is 1: 0.5-10; Described being reflected under the heating condition carried out, and temperature of reaction is 50-150 ℃.
4. method according to claim 1, wherein the basic solution of step c) formula I compound and alkali metalsulphide or hydrogen sulfide in molar ratio 1: the 1-10 reaction, here, described basic solution is the aqueous solution of alkali metal hydroxide, concentration is 0.01-6mol.L -1Temperature of reaction is 100-200 ℃.
5. method according to claim 1, wherein the reaction of step c) is carried out in organic solvent, and described organic solvent is selected from alcohol or the N of C1-C4, dinethylformamide solvent, or the mixture of these two kinds of solvents.
6. method according to claim 1, wherein the reaction of step c) is carried out in organic solvent, and described organic solvent is selected from ethylene glycol or N, dinethylformamide solvent, or the mixture of these two kinds of solvents.
7. method according to claim 1, wherein the catalyzer used of the selected deprotection base of step d) is mineral acid or organic acid or Bi (NO 3) xH 2O, Ce (OTf) 3, InCl 3Salt, described mineral acid are sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, Hydrogen bromide, perchloric acid or Periodic acid; Described organic acid is formic acid, acetate, trifluoroacetic acid, trichoroacetic acid(TCA), oxalic acid, chlorsulfonic acid or tosic acid.
8. method according to claim 7, wherein the temperature of reaction of step d) is 0-100 ℃.
9. according to the described method of each claim in the claim 1 to 8, step a) is to d) the used extraction solvent of wherein arbitrary step is sherwood oil, methylene dichloride, ethylene dichloride, chloroform, ethyl acetate, propyl acetate, ethyl formate, or toluene, the perhaps mixture of above two or more organic solvent.
10. the method for tetrahydrobiopterin synthesis thiophene-3-ketone comprises the steps:
A) chloroacetyl chloride and ethene are reacted under aluminum chloride catalysis, generate 1,4-dichloro butanone;
B) spent glycol protection 1 in the presence of acid catalyst, the ketone carbonyl of 4-dichloro butanone obtains 2-(2-chloroethyl)-2-chloromethyl-1, the 3-dioxolane;
C) with 2-(2-chloroethyl)-2-chloromethyl-1,3-dioxolane and sodium sulphite reaction obtain closing ring product 1,4-dioxy-7-thiophene volution nonane;
D) 1, heating hydrolysis under 4-dioxy-7-thiophene volution nonane acidic conditions gets tetrahydro thiophene-3-ketone.
11. the preparation method of a tetrahydro thiophene-3-ketone, it comprises the steps:
A), generate 1,4-dichloro butanone with chloroacetyl chloride and ethylene reaction;
B) under 50-100 ℃ of condition, ethylene glycol protection 1, the ketone carbonyl of 4-dichloro butanone; Ethylene glycol and 1 wherein, 4-dichloro butanone is by 1: the molar ratio reaction of 1-5;
C) with 2-(2-chloroethyl)-2-chloromethyl-1,3-dioxolane and sodium sulphite in molar ratio 1: the 1-10 reaction obtains closing ring product 1,4-dioxy-7-thiophene volution nonane;
D) heat 1 under hydrochloric acid catalysis, 4-dioxy-7-thiophene volution nonane makes it slough protecting group and obtains tetrahydro thiophene-3-ketone.
CN2009102032595A 2009-06-02 2009-06-02 Preparation method of tetrahydrothiophene-3-ketone and intermediate Active CN101575329B (en)

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