CN1052484C - 5-Alkoxy [1,2,4] triazolo [1,5,-C] pyrimidine -2[3H]-thione compounds and their use - Google Patents
5-Alkoxy [1,2,4] triazolo [1,5,-C] pyrimidine -2[3H]-thione compounds and their use Download PDFInfo
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Abstract
2-chlorosulfonyl-5-ethoxy-7-fluoro[1,2,4]triazolo-[1,5-c]pyrimidine (1), that are useful for the preparation of 5-alkoxy[1,2,4]-triazolo[1,5-c]pyrimidine-2-sulfonamide herbicides, is prepared in an improved manner from 5-alkoxy[1,2,4]triazolo[1,5-c]pyrimidine-2(3H)-thione compounds, by oxidation with hydrogen peroxide to obtain novel 2,2'-dithio-bis(5-alkoxy[1,2,4]triazolo[1,5-c]pyrimidine) compounds, and subsequent chloroxidation of these intermediate compounds.
Description
The present invention relates to 5-alkoxyl group (1,2,4) triazolo (1; 5;-C) pyrimidine-2 (3H)-thioketones and with these compound 2, two (the 5-alkoxyl groups (1,2 of 2 '-dithio; 4) triazolo (1; 5 ,-C) pyrimidine) and 2-chlorosulfonyl-5-alkoxyl group (1,2; 4) method of triazolo (1,5-C) pyrimidine compound.The present invention so relate to prepared 2, two (the 5-alkoxyl groups (1,2 of 2 '-dithio; 4) triazolo (1,5-C) pyrimidine) compound and these compound of use 2-chlorosulfonyl-5-alkoxyl group (1,2; 4) application of triazolo (1,5-C) pyrimidine compound.
5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidine-2-sulfanilamide (SN) is effective weedicide, at United States Patent (USP) 5,163, states in 995.According to open, they make with multistep processes, and this method is included in the water-bearing media carries out corresponding 2-(benzylthio-or C with chlorine
2-C
4Alkylthio)-5-alkoxyl group (1; 2; 4) triazolo (1; 5-C) oxychlorination of pyrimidine compound prepares 2-chlorosulfonyl-5-alkoxyl group (1; 2; 4) triazolo (1,5-C) pyrimidine midbody compound, the aniline of these midbody compounds and replacement or the condensation of N-trialkylsilkl aniline compound subsequently.The productive rate of required weeding product is variable, and this usually is because the productive rate that obtains in oxychlorination is low and resultant 2-chlorosulfonyl-5-alkoxyl group-impure causing of (1,2,4) triazolo (1,5-C) pyrimidine midbody compound.In addition, this method can produce excessive refuse.
Preparation 5-alkoxyl group (1,2,4) triazolo (1; 5-C) the intermediate 2-chlorosulfonyl-5-alkoxyl group of pyrimidine-2-amine compound-(1,2,4) triazolo (1; 5-C) improving one's methods of pyrimidine, the method that for example productive rate is higher or purity is higher or easy and simple to handle are very useful.
5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H)-thioketones and 2 has been described in the prior art, two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) compounds of 2 '-dithio.
Prepared 5-alkoxyl group (1,2,4) triazolo (1; 5-C) pyrimidine-2 (3H)-thione compounds and find that these compounds can be used for preparing 2-chlorosulfonyl-5-alkoxyl group (1,2,4) triazolo (1; 5-C) pyrimidine compound, directly or by midbody compound 2, two (the 5-alkoxyl groups (1 of 2 '-dithio; 2,4) triazolo (1,5-C) pyrimidine) be prepared; as a result of, can be used for preparing 5-alkoxyl group (1,2; 4) triazolo (1,5-C) pyrimidine-2-sulfanilamide (SN) weedicide.Use the method for these compounds to comprise a kind of like this method; wherein make 5-alkoxyl group (1 with oxygenant; 2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thione compounds is oxidized to 2; two (the 5-alkoxyl groups (1 of 2 '-dithio; 2,4) compound triazolo (1,5-C) pyrimidine); make these compound oxychlorination subsequently; obtain 2-chlorosulfonyl-5-alkoxyl group (1,2,4) triazolo (1; 5-C) pyrimidine compound; this method can be in preparation N-(phenyl of replacement)-5-alkoxyl group (1,2,4) triazolo (1; 5-C) pyrimidine-2-sulfanilamide (SN) weedicide, more more economical than what described in the past; easier.
The present invention includes 5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H)-thione compounds of formula I:
Wherein
One of Y and Z represent F, Cl, and Br, R ', or OR ', another represents H; And
R and R ' represent CH independently of one another
3Or C
2H
5
Wherein one of Y and Z represent F, Cl, or Br, and another formula I compound of representing H generally is preferred.Fluoric compound is normally preferred, and chlorinated compound is preferred sometimes.
The present invention also comprises the method for 5-alkoxyl group-(1,2,4) triazolo (1,5-C) pyrimidines-2 (3H)-thione compounds of use formula I:
Wherein
One of Y and Z represent F, Cl, and Br, R ' or OR ', another represents H;
R and R ' represent CH independently of one another
3Or C
2H
5, the method is characterized in that the said compound of oxidizer treatment that in the inert reaction medium, suits with at least one equivalent, obtain 2 of formula II, two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) midbody compounds of 2 '-dithio:
R wherein, Y and Z are helping under the condition of oxychlorination as defined above subsequently, handle intermediates with at least 5 moles of chlorine in suitable water-bearing media, obtain 2-chlorosulfonyl-5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidine compound of formula III:
R wherein, Y and Z are as defined above.
The present invention also comprises 2 of formula II, two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) midbody compounds of 2 '-dithio:
Wherein
One of Y and Z represent F, Cl, and Br, R ' or OR ', another represents H; And
R and R ' represent CH independently of one another
3Or C
2H
5
Wherein one of Y and Z represent F, Cl or Br, another formula II compound of representing H generally is preferred, wherein one of Y and Z represent F, another represents this compounds of H normally preferred, and wherein one of Y and Z represent Cl, and another this compounds of representing H is preferred sometimes, and wherein to represent the formula II compound of ethyl often be preferred to R.
5-alkoxyl group (1 of the present invention, 2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thione compounds can be characterized by wherein alkoxyl group be methoxy or ethoxy and in the presence of on 7 or 8 halogen, alkyl, or the 5-alkoxyl group (1 of alkoxy substituent, 2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thione compounds, these compounds comprise the compound of formula I:
R represent methylidene formula ethyl wherein; One of Y and Z represent fluorine, chlorine, and bromine, methyl, ethyl, methoxyl group, or oxyethyl group, another represents hydrogen.
Fluoric compound is normally preferred, and chlorinated compound is preferred sometimes.Preferred formula I compound comprises 5-oxyethyl group-7-(fluorine or chlorine) (1,2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thioketones, 5-methoxyl group-7-(fluorine or chlorine) (1,2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thioketones, 5-oxyethyl group-8-(fluorine or chlorine) (1,2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thioketones, with 5-methoxyl group-8-(fluorine or chlorine) (1,2,4) triazolo (1,5-C) pyrimidine-2 (3H)-thioketones.
The compound of formula I is named and is stated as 2 (3H)-thione compounds in this article.They can be named as the 2-mercaptan compound originally equally, because these two kinds of structures are ketone-enol form isomer and are in running balance.The ketone of formula I compound and enol isomer are as follows:
Formula I formula IA
The 5-alkoxyl group of formula I (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H)-thione compounds is very unstable, is easy to during placement decompose, in addition also like this under solid state.Preferably after preparation, synthesize other more stable compound with these compounds as intermediate immediately.
The compound of formula I can be prepared as follows: contain methyl alcohol or ethanol as the medium of solvent in or in a kind of this solvent with the 5-alkoxyl group-1,2 of formula IV, 4-triazolo (4,3-C) pyrimidines-3 (2H)-thione compounds:
Wherein one of R represent methylidene or ethyl and Y and Z represent fluorine, chlorine, and bromine, methyl, ethyl, methoxyl group, or oxyethyl group, another represents hydrogen, mixes with at least 1 molar equivalent alkali methylates or ethylate.Must select alkali metal alcoholates and alcohol to make the 5-alkoxyl group of formula IV compound, alkali metal alcoholates all has identical alkyl (methyl or ethyl) with alcohol.If these reagent are not couplings like this, permutoid reaction then divide to take place, productive rate is significantly reduced and make the reclaimer complexity.
The alkali metal alcoholates that uses in this method is methyl alcohol and alcoholic acid lithium, sodium and potassium derivative.Use at least 1 molar equivalent alkali metal alcoholates.Alkali metal alcoholates is typically 1-2 with the ratio of formula IV compound.1.03-1.3 ratio normally preferred.Be deleterious to present method when the alkali metal alcohol salt concn is higher.
The reaction medium of present method must contain suitable alcohol, also can contain other compatible solvent.Such solvent should be able to be miscible with alcohol, should not cause the fractional precipitation of crossing of alkali metal alcoholates, should not react with any reagent or product.Such compatible solvent comprises acetonitrile, 1,2-glycol dimethyl ether, N, dinethylformamide, methyl-sulphoxide or the like.Preferably contain in the reaction medium and be lower than 2% water.More preferably its water content is lower than 0.2%, and the existence of water can cause destroying raw material, product or the side reaction of the two.
Isomerization can be carried out at ambient temperature fully, generally carries out under-10 ℃-40 ℃ temperature.0 ℃-30 ℃ temperature usually is preferred.Raw material and product are easy to decompose under higher temperature.This method can be carried out in the container of routine.But stirred reaction mixture is to guarantee good mixing usually.
The solution of an alkali metal salt of formula I compound takes place and obtains at first containing in several hours at several minutes in rearrangement reaction.Preferably do not make this solution long storage period, because the salt of required formula I compound is not completely stable.Formula I compound itself can obtain by adding enough sour neutralization medium.Basically any organic or inorganic proton acid can both be used for acidifying.Be typically, use the cheap and PKa that is easy to obtain less than 8 acid, example hydrochloric acid, sulfuric acid, or acetate.Hydrochloric acid is preferred.Be typically, the add-on of acid surpasses the required amount of neutralization just.
The precipitation that required formula I compound can form when collecting acidifying reclaims.Usually adding entry after acidifying and before collecting precipitates fully guaranteeing.The product that is recovered to can be after filtration or centrifugal the collection, and if desired, available ordinary method is carried out drying, but should avoid overheated.These compounds can be used ordinary method, and as recrystallization, liquid phase chromatography is purifying in addition further.
The 5-alkoxyl group-1,2 of formula IV, 4-triazolo (4,3 ,-C) pyrimidines-3 (2H)-thione compounds can pass through the 2-alkoxyl group-4-diazanyl pyrimidine compound with formula V:
Wherein one of R represent methylidene or ethyl and Y and Z represent fluorine, chlorine, and bromine, methyl, ethyl, methoxyl group, or oxyethyl group, another represents hydrogen, mixes with at least 1 mole of carbon disulfide, and as required, the trialkylamine compound that also can sneak into formula VI prepares:
R wherein
1, R
2, and R
3Represent C independently of one another
1-C
4Alkyl or benzyl or R
1, R
2, and R
3In two represent Shi-(CH together
2)
4,-(CH
2)
5-, or O (C
2H
4-)
2, CH
3N (C
2H
4-)
2Part or R
1, R
2, and R
3Represent formula N (C together for all three
2H
4-)
3Part.Under 0 ℃-40 ℃ temperature, make these reagent mix in the water-acetonitrile as containing at suitable inert liquid medium.Usually stir the mixture to guarantee good mixing.Carry out with being swift in response, generate the 5-alkoxyl group-1,2 of required formula IV, 4-triazolo (4,3-C) pyrimidines-3 (2H)-thione compounds, if add the trialkylamine compound, but the trialkyl ammonium salts of production IV compound.If obtain trialkyl ammonium salts, then make it to be converted into formula IV compound by adding at least 1 mole of strong acid.Can be by adding water to guarantee to precipitate fully and by filtering or centrifugal collecting precipitation reclaims the formula IV compound that obtains.Can remove elementary sulfur with ordinary method.Usually can utilize sulphur different with the solubility of formula IV compound in buck and in dithiocarbonic anhydride, sulphur is solvable in dithiocarbonic anhydride, and formula IV compound is insoluble, and solvable at buck Chinese style IV compound, and sulphur is insoluble.
The 2-alkoxyl group of formula V-5-replacement-4-diazanyl pyrimidine raw material can be by handling 2 with hydrazine and triethylamine, and the pyrimidine compound that 4-dialkoxy-5-replaces prepares.Equally, 2-alkoxyl group-6-replace-4-diazanyl pyrimidine compound can prepare by the pyrimidine compound of handling corresponding 2-alkoxyl group-4-halogen-6-replacement with hydrazine and triethylamine.Reaction is preferably in the water or in solvent such as acetonitrile, under 0 ℃-40 ℃ temperature, uses 1 mole of triethylamine and excessive slightly hydrazine to carry out.The 2-alkoxyl group of required formula V-(5 or 6)-replacement-4-diazanyl pyrimidine compound can be beneficial to precipitation and after filtration by adding water, and is centrifugal, or extract to reclaim precipitation and reclaim.Yet these compounds usually needn't reclaim and/or purifying just can be used as intermediate.
At the 5-of formula I alkoxyl group-(1,2,4) triazolo (1,5-C) related method is a kind of 2-chlorine sulphonyl-5-alkoxyl group (1 for preparing formula III in the using method of pyrimidine-2 (3H)-thione compounds, 2,4) improving one's methods of triazolo (1,5-C) pyrimidine compound:
Wherein one of R represent methylidene or ethyl and Y and Z represent fluorine, chlorine, and bromine, methyl, ethyl, methoxy or ethoxy, and another represents hydrogen.
The compound of formula III can be described as be in has the chlorosulfonyl part on 2, have methoxy or ethoxy part on 5 and on 7 or 8, having halogen, alkyl, or alkoxy substituent (1,2,4) triazolo (1,5-C) pyrimidine compound, wherein one of Y and Z represent fluorine, chlorine, or bromine, and another represents this compounds of hydrogen normally preferred, and wherein one of Y and Z represent fluorine, and another represents those compounds of H normally preferred; Wherein one of Y and Z represent chlorine, and another those compounds of representing H are preferred sometimes.
The particular compound of available present method preparation comprises 2-chlorosulfonyl-8-fluoro-5-methoxyl group (1,2,4) triazolo (1; 5-C) pyrimidine, 2-chlorosulfonyl-5-oxyethyl group-7-fluorine (1,2; 4) triazolo (1,5-C) pyrimidine, 2-chlorosulfonyl-8-chloro-5-methoxyl group (1; 2,4) triazolo (1,5-C) pyrimidine; with 2-chlorosulfonyl-7-chloro-5-oxyethyl group (1; 2,4) triazolo (1,5-C) pyrimidine.
The compound of formula III is at United States Patent (USP) 5,163, record to some extent in 995 and 5,177,206, and its suitable part is incorporated herein by reference.This compound can be used for preparing herbicidal compound 5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidine-2-sulfanilamide (SN).In the presence of the methyl-sulphoxide of tertiary amine and/or catalytic amount, in inert solvent such as acetonitrile, make the compound and the aniline or the coupling of N-trialkylsilkl aniline compound that suitably replace of formula I.
Related method can be counted as comprising the two-step approach of oxidizing reaction and oxi-chlorination in the using method of formula I compound.At first, use 5-alkoxyl group-(1,2,4) triazolo (1,5-C) pyrimidines-2 (3H)-thione compounds of suitable oxidizer treatment formula I:
Wherein one of R represent methylidene or ethyl and Y and Z represent fluorine, fluorine, and bromine, methyl, ethyl, methoxy or ethoxy, and another represents hydrogen.The compound of formula I is partially dissolved in the inert reaction medium at least and adds 1 normal oxygenant.1 normal hydrogen peroxide is 0.5 mole.The generation that is swift in response, 2 of production II, two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) compounds of 2 '-dithio;
R wherein, Y and Z definition are the same.The compound of formula II is separated out from reaction medium usually, preferably with recovered in solid form.
Suitable oxygenant is the oxygenant that organic mercaptan and thione compounds can be oxidized to disulphide.Suitable oxygenant comprises hydrogen peroxide, halogen such as bromine, peracid such as peracetic acid, diacyl peroxide such as acetyl peroxide and alkyl peroxide such as tert-butyl peroxide.Hydrogen peroxide is preferred.
Using commercial available 30% aqueous hydrogen peroxide solution usually is preferred as oxygenant.Also can use the hydrogen peroxide of other form.
The inert reaction medium that is used for this first step is that the raw material of its Chinese style I and the intermediate of formula II all have rational stability, and raw material and oxygenant are solvable to small part, under reaction conditions not can with the reaction medium of oxidant reaction or its decomposition of catalysis.Such reaction medium is typically and contains water as a kind of composition.Be generally water and methyl alcohol, ethanol, 2-propyl alcohol, acetonitrile, 1-methoxyl group-2-propyl alcohol, 1, the mixture of 2-glycol dimethyl ether and tetrahydrofuran (THF).Aqueous methanol and ethanol are normally preferred.Medium is neutral or slightly acidic preferably.If use acidic medium, then generally use hydrochloric acid.
This first step reaction is easy to carry out at ambient temperature.Typical temperature is-10 ℃-80 ℃, preferably 0 ℃-40 ℃.This reaction is thermopositive reaction, during reaction preferably makes the reaction mixture cooling.And then stirred reaction mixture and add oxygenant lentamente or with incremental mode preferably.
The formula II compound that obtains in the first step generally is insoluble to reaction mixture, just separates out once forming.Can add extra water and reaction mixture cooling is precipitated fully guaranteeing.Can be after filtration or centrifugal this compound that from reaction medium, reclaims.If desired, available ordinary method is carried out drying, and purifying is carried out in available ordinary method such as recrystallization and extraction.
Second step of method comprises the using method of the formula II compound that as above obtains or obtain with any alternate manner.Helping under the condition of oxychlorination and in suitable reaction medium, handling formula II compound, obtain the compound of formula III with at least 5 moles of chlorine.The compound of formula III is generally being recovered with the aqueous solution form of immiscible organic solvent or with solid form.
The reaction medium that is applicable to second step is the medium that the compound of its Chinese style II compound solvable to small part and formula III has the stability of resonable degree.The compound of its Chinese style II and formula III is partly soluble at least to comprise that the reaction medium of water and organic solvent usually is preferred.Organic solvent preferably can be miscible with water, and medium comprises two-phase at least.Such medium comprises water and chlorinated hydrocarbon solvent such as methylene dichloride, chloroform, 1, the mixture of 2-ethylene dichloride and tetrachloroethylene, or the mixture of water and aromatic hydrocarbon solvent such as toluene.Aqueous acids, as aqueous hydrochloric acid usually as the source of water in the medium.The mixture of water and methylene dichloride or chloroform usually is preferred.Other suitable medium comprises acetonitrile, acetate and formic acid, and they are anhydrous or mix with water.Also can use the above aqueous hydrochloric acid of 1N, for example 6.25N hydrochloric acid.Hydrogenchloride generates as by product in oxi-chlorination, thereby its existence all the time basically, and its concentration increases along with the carrying out of reaction.Common every part of formula II compound uses 3-20 part (weight) reaction medium.
The reaction conditions that helps chlorinolysis is to make required reaction that the condition of side reaction takes place and can suppress with rational speed of reaction.Temperature of reaction is generally-20 ℃-40 ℃, and preferably-10 ℃-30 ℃, more preferably 0 ℃-15 ℃.General following the carrying out of this reaction: in suitable reaction medium, blast chlorine in the mixture that contains formula II compound or only be sprayed on the mixture top, stir simultaneously and cool off to keep required temperature.Chlorine adds with such speed, that is: it is disperseed and abundant controlled temperature rapidly.
The general elder generation of formula III compound that makes with present method obtains with the organic solvent part solution form of reaction medium or with the insoluble solid form.When obtaining the solution of formula III compound, can be separated by making, and as required, water or aqueous acids washing organic phase are reclaimed.Then, if desired, can remove organic solvent by vapourisation under reduced pressure or distillation or with other ordinary method.In addition, can pass through component distillation, use hygroscopic salt, or make the solution drying with other ordinary method, used product exists with the drying solution form.When obtaining the compound of formula III with the insoluble solid form, available ordinary method as after filtration or centrifugal recovery and available ordinary method make it dry.
Be possible and be preferred sometimes not reclaiming under the midbody compound situation of related formula I by the compound of formula IV or by the compound of the compound formula II of formula V.Therefore, the compound of formula I (its use is one aspect of the present invention) can and can reclaim the compound that just is used for production formula II by formula IV compound as indicated above from used reaction medium.In addition, the compound of formula I can be by formula IV compound as indicated above, the compound of formula IV is again by formula V compound as indicated above, needn't just can be used for the compound of production formula II from used reaction medium recovery type IVization thing or formula 1 compound.
2 of use formula I compound formula II, the method for two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) compounds of 2 '-dithio is another aspect of the present invention:
Wherein one of R represent methylidene or ethyl and Y and Z represent fluorine, chlorine, bromine, methyl, ethyl, methoxyl group, or oxyethyl group; And another represents hydrogen.As indicated above, the preparation of these compounds is the first steps of utilizing in the entire method of formula I compound formula III compound.
Present invention resides in the midbody compound 2 of the formula II that obtains in present method, 2 '-dithio two (5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidine):
On behalf of fluorine, chlorine, bromine, methyl, ethyl, methoxy or ethoxy and another, wherein R represent methylidene or ethyl, one of Y and Z represent hydrogen.Formula II compound b referred to as each sulphur atom and is connected with one (1,2,4) the symmetrical disulphide of triazolo (1,5-C) pyrimidine-2-base part, its each several part has the methoxy or ethoxy substituting group on 5, and has single halogen, alkyl or alkoxy substituent on 7 or 8.This compounds is crystalline solids thing white or approaching white.
On behalf of fluorine, chlorine or bromine and another, one of general preferred wherein Y and Z represent the formula II compound of hydrogen.One of general more preferably Y and Z represent the formula II compound of hydrogen from table fluorine and another, and more preferably on behalf of chlorine and another, one of Y and Z represent the formula II compound of hydrogen sometimes.Sometimes also preferred R represents the formula II compound of ethyl.
Preferred formula II compound has 2, two (8-fluoro-5-methoxyl group (1,2, the 4) triazolos (1 of 2 '-two sulphur, 5-C) two (the 5-oxyethyl groups-7-fluorine (1 of 2,2 '-two sulphur pyrimidine),, 2,4) triazolo (1,5-C) pyrimidine), two (the 8-chloro-5-methoxyl groups (1,2 of 2,2 '-two sulphur, triazolo (1,5-C) pyrimidine) and two (the 7-chloro-5-oxyethyl groups (1 of 2,2 '-two sulphur 4), 2,4) triazolo (1,5-C) pyrimidine).
The present invention also comprises the purposes with formula II compound formula III compound.The group method that the related flow process of this purposes method makes formula I compound transform accepted way of doing sth II compound in front illustrated in second step.Represent the use of the formula II compound of ethyl for R wherein, this method is valuable especially.One of general preferred wherein Y and Z represent fluorine and another to represent hydrogen or wherein on behalf of chlorine and another, one of Y and Z represent the use of the formula II compound of hydrogen.
Also can be from formula I compound formula III compound, and not be used in the different reactions steps preparation as the formula II compound of intermediate.The method of this use formula I compound is by helping to use at least 3 moles of chlorine processing formula I compounds to carry out under the reaction conditions of oxychlorination.Help the reaction conditions of oxychlorination should be able to make required reaction carry out and under this reaction conditions, be helpless to pay the generation of reaction with rational speed of reaction.Representative temperature is-20 ℃-40 ℃, preferred-10 ℃-30 ℃, and more preferably 0 ℃-15 ℃.This reaction generally is by in suitable reaction medium, stir and cooling with keep temperature required in, chlorine blasted the mixture of formula I compound or only is sprayed on that its top carries out.The adding speed of chlorine is so that it disperses rapidly and the accurate controlled temperature of energy is advisable.
Embodiment
1. prepare 5-fluoro-4-diazanyl-2-methoxy pyrimidine
5-fluoro-2, and the 4-dimethoxy-pyridine (158g, 1.00mol), 150g (3.00mol) hydrazine hydrate and 237g methyl alcohol places 1 liter of flask and reflux (about 70 ℃) 3.5 hours under agitation.Then, will become homogeneous phase, and become the heterogenetic mixture then again and be cooled to 0-5 ℃, the solid of existence reclaims by vacuum filtration, with the washing of 150ml cold methanol, is dried to constant weight then.With the fusing point 188-189 ℃ of about 151.5g of the title compound that colourless needle obtains (theoretical value 96%).
The NMR data
(DMSO-d6)δ：1H：3.77(s，3H)，4.38(2H)，7.83(d(J＝3.6HZ)，1H)，8.87(1H)；13C：54.2，137.9(d(JCF＝19.6HZ))，141.5(d(JCF＝244.8HZ))，154.3(d(JCF＝13.7HZ))，160.6.
2. prepare 2-oxyethyl group-4-fluoro-6-diazanyl pyrimidine
Preparation 100g 94% purity (0.59mol) 2-oxyethyl group-4, the mixture of 6-fluoropyrimidine, 275ml acetonitrile and 107g water also is cooled to 10 ℃.Add 68g (0.67mol) triethylamine inward, add 34g (0.68mol) hydrazine hydrate again, simultaneously, slowly stir and cool off (in 5-10 ℃).When all hydrazines addings finished, the restir mixture was 15 minutes under cooling, allowed its heat up then.After 1 hour, reclaim the solid that forms altogether, use the washing twice of every part of 100ml then, then the about 79.7g of title compound (theoretical value 80%) that obtains with fusing point 141-143 ℃ white solid with the 50ml washing with alcohol by vacuum filtration.
Ultimate analysis: C
6H
9FN
4O
Calculated value: %C, 41.9; %H, 5.27, %N, 32.5
Measured value: %C 42.2; %H, 5.12; %N, 32.6
3. prepare 5-chloro-4-diazanyl-2-methoxy pyrimidine
Under agitation, will contain 0.35g (2.0mmol) 5-chloro-2, the 2.9g methanol solution reflux of 4-dimethoxypyridin and 0.35g (7.0mmol) hydrazine hydrate 8 hours.Then, cooling mixture forms precipitation.Add water, till seeming that precipitation fully.Then, reclaim throw out and allow its dry air cross liquid, obtain 0.23g (theoretical value 66%) thus and be the title compound of white solid by vacuum filtration.As if become similar cube (this phenomenon relates to sublimation) afterwards in crystalline form by needle-like, the fusing point of product is 172-173 ℃.
The NMR data
(DMSO-d6)δ：1H：3.85(s，3H)，4.50(2H)，7.97(s，1H)，8.7(1H)；13C：54.17，105.40，152.77，159.39，and?163.39.
4. prepare 8-fluoro-5-methoxyl group-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H)-thioketones
In the 250ml flask, (15.81g 0.100mol), 47g methyl alcohol, 10.2g (0.100mol) triethylamine and 11.4g (0.15mol) dithiocarbonic anhydride, obtains a kind of yellow multiphase mixture to merge down 5-fluoro-4-diazanyl-2-methoxy pyrimidine in room temperature nitrogen.With cryostat mixture is cooled to 1.5 ℃.Then, utilize by partition insert syringe pump in the flask add hydrogen peroxide (12.5g 30% hydrate, 0.11mol).Adition process is lasted 1 hour, stir and cooling under carry out with holding temperature about 15 ℃.Make mixture reaction and heated up 1 hour, to the vacuum filtration of the heterogeneous orange mixture of gained to remove solid sulfur.Filtrate is cooled off in ice bath, and with 17.6ml (0.11mol) with 125ml water-reducible 6.25N hcl acidifying.The gained throw out reclaims and drying under reduced pressure by vacuum filtration, and obtaining 18.81g (theoretical value 94%) is half look solid title compound, and its fusing point is 166 ℃ (decomposition).The NMR data
(DMSO-d6)δ：1H：4.01(s，3H)，7.64(d(J＝2.8HZ)，1H)，14.5(brs，1H)；13C：56.00，125.6(d(JCF＝22.0HZ))，141.7(d(JCF＝41.7HZ))，146.0(d(JCF＝191.0HZ))，and?161.2.
5. prepare 5-oxyethyl group-7-fluoro-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H) thioketones
Preparation contains the mixture of 5.2g (30mmol) 2-oxyethyl group-4-fluoro-6-diazanyl pyrimidine in the solvent of 50ml acetonitrile and 15ml water formation approximately, under stirring at room, adds 6.4ml (107mmol) dithiocarbonic anhydride inward.After about 10 minutes, the heterogenetic white mixture becomes pale yellow solution, under stirring and cooling off, adds 3.8ml 30% aqueous hydrogen peroxide (37mmol) and 3.2ml water then, lasts 30 minutes, so that temperature is maintained at about 25 ℃.Allow mixture react again 10 minutes, add 3.22g (32mmol) triethylamine then, and with gained mixture filtering sulphur.With 10ml3.75N hydrochloric acid (38mmol) acidifying filtrate.Filter the gained mixture to reclaim the throw out that forms.Wash this throw out and dry, obtain the title compound of 4.4g (theoretical value 66%) oldlace solid 97% purity, its fusing point is 170 ℃.Remaining a large amount of product in the filtrate.
Ultimate analysis: C
7H
7FN
4OS
Calculated value: %C, 39.2; %H, 3.29; %N, 26.2
Measured value: %C, 39,3; %H3.07; % value 25.9
6. prepare 7-chloro-5-oxyethyl group-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H)-thioketones
Under nitrogen, preparation contains the mixture of 20g 93% purity (99mmol) 4-chloro-2-oxyethyl group-6-diazanyl pyrimidine in the solvent of 90ml acetonitrile and 26ml water formation in the 500ml flask, described flask is furnished with condenser and by the perforate that partition covers, passes the syringe that partition inserts a syringe pump.Add 11.3g (148mmol) dithiocarbonic anhydride inward, after 15 minute reaction period, stir and cooling under, utilize syringe with 15 minutes time adding 16.7g 30% aqueous hydrogen peroxide (147mmol), so that temperature is maintained at about 25 ℃.Allow mixture react again 4 hours, be cooled to about 0 ℃ then.Product that is settled out and sulphur by product reclaim by vacuum filtration, 1: 1 mixture of water, water and acetonitrile, wash with acetonitrile at last.With the slurrying in 70 ℃ of 1 premium on currency of wet filter cake, and add about 600ml acetonitrile with dissolved solids.The gained mixture allows filtrate cool off weekend by gravity filtration.Mixture further in refrigerator and cooled but forms crystal and reclaims by vacuum filtration, with the acetonitrile washing, and is dried to constant weight, obtains the title compound of the amber solid state of 14.1g (theoretical value 62%), and it is being higher than 187 ℃ of following thermal degradation.
Ultimate analysis: C
7H
7ClN
4OS
Calculated value; %C, 36.4; %H, 3.06; %N, 24.3
Measured value: %C, 36.4; %H, 2.79; %N24.1
7. prepare 8-chloro-5-methoxyl group-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H)-thioketones
Under stirring at room, in 120ml acetonitrile and 30ml water, merge 5-chloro-4-diazanyl-2-methoxy pyrimidine (17.45g, 0.10mol) and 25g (0.033mol) dithiocarbonic anhydride, and under agitation, in the gained mixture, add 11.4g (0.10mol) 30% hydrogen peroxide, last 2 hours.Temperature is brought up to 48 ℃ by 20 ℃.Show with high pressure liquid chromatography (HPLC) (HPLC) analysis of mixtures and to react completely.79.8g the reaction mixture of (accounting for gross weight 47.2%) part dilutes with 50ml water, and with the mixture hcl acidifying.Afterwards, the solid of existence reclaims by vacuum filtration and is dry, obtains the mixture of 10.15g title compound and sulphur.Then, with the sulphur removal of 45g extraction with carbon disulfide solids, obtain 8.08g (theoretical value 80%) yellowish brown title compound.Analyze by HPLC, this material purity is 92%, and thermal degradation.
The NMR data
(DMSO-d6)δ：1H：4.04(s，3H)，7.67(s，1H)，14.25(brs，1H)；13C：56.18，110.08，140.46，145.76，150.11，and?161.32.
8. prepare 8-fluoro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H) thioketones
Preparation 10.01g (0.050mol) 8-fluoro-5-methoxyl group-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H) thioketones in 8.6g methyl alcohol mixture and cool off with ice-water bath.In nitrogen stir and cooling down, be incorporated in sodium methylate in the methyl alcohol (32.4g, concentration 25%, 0.15mol).2.5 after hour, under agitation, in gained heavy-gravity slip, add the ice-cold 6.25N aqueous hydrochloric acid of 25.6ml.With less water dilution gained mixture, reclaim solid and drying under reduced pressure by vacuum filtration, obtain 8.26g (theoretical value 83%) colourless powder shape title compound.This compound is in 155-160 ℃ of fusing, and then solidifies and in fusing again below 230 ℃.
The NMR data
(CD3CH)δ：1H：2.5-3.5(brs，1H)，4.21(s，3H)7.92(d(J＝2.1HZ)，1H)；13C：57.4，118.2，129.2，129.5，143.0，146.4，146.7，14.7，149.1，and?163.8.
9. prepare 5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H)-thioketones
Preparation 5.8g (26mmol) 5-oxyethyl group-7-fluoro-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H) thioketones is in the mixture of 50ml dehydrated alcohol.Under 0 ℃ of strong mixing and cooling, add the 21wt% sodium ethylate of 12.2ml (33mmol) in ethanol inward.Slight thermopositive reaction takes place, and mixture becomes plum solution by suspension.Mixture stirred 2.25 hours under being lower than 10 ℃ so that reaction finishes.Then,,, and filter, reclaim the throw out that forms in-10 ℃ of stirrings 30 minutes with mixture 25ml1.25N hcl acidifying.Throw out is with 10ml cold water washing and dry, obtains the title compound of 3.3g (theoretical value 60%) purity 98%.From filtrate, obtain about 1.7g purity and be second product of 60% material (theoretical value 19%).The title compound fusing point is 83.5 ℃-86.5 ℃, is white solid.
The NMR data
(CDCl
3)δ：1H：1.58(t，3H)，4.52(s，2H)，4.75(q，2H)，7.28(m，3H)，7.45(d，2H).
Make this compound be converted into 2-benzylthio--5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine (fusing point 78-82 ℃) by handling, further proved its consistence with benzyl chloride.
10. prepare 8-chloro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H) thioketones
8-chloro-5-methoxyl group-1,2,4-triazolo (4,3-C) pyrimidine-3 (2H) thioketones (0.215g, 1.00mmol) mix with the 2.0g anhydrous methanol, under stirring at room, in this mixture, add commodity 25% sodium methylate of 0.26g (1.2mmol) in methyl alcohol with incremental mode.After 35 minute reaction period, mixture aqueous hydrochloric acid acidifying and dilute with water.The precipitation that forms obtains the cream-colored solid state title compound of 0.168 gram by filtered and recycled and dry, measures with HPLC, and its purity is 97% (theoretical value 76%).This compound mixture recrystallization of first alcohol and water; It is decomposing below 250 ℃, but does not melt.
The NMR data
(CDCl
3)δ：1H：4.28(s，3H)，7.93(s，1H)over?14(not?obser-ved)；13C：56.0，112.0，142.1，148.0，153.5，and?163.0.
Make it change into 2-benzylthio--8-chloro-5 methoxyl groups (1,2,4) triazolos (1,5-C) pyrimidine-a kind of at United States Patent (USP) 5,163 by handling with benzyl chloride, known compound in 995 has further proved its consistence.
11. prepare 2,2 '-two sulphur two (8-fluoro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidine)
Preparation is by 76.0g (0.380mol) 8-fluoro-5-methoxyl group (1,2,4) multiphase mixture (in 24 ℃) of triazolo (1,5-C) pyrimidine-2 (3H) thioketones and 400g methyl alcohol formation, and under agitation add the ice-cold 30wt% superoxol of 45.3g (0.400mol).Thermopositive reaction takes place, and temperature is raised to 43 ℃.Allow about 75 minutes of mixture reaction, under agitation add the ice-cold 30wt% superoxol of 13.0g (0.115mol) then again.Allow mixture react again 30 minutes, reclaim the solid that exists by vacuum filtration then.Dry these solids are used methyl alcohol slurrying then.With the slip reflux, be cooled to 35-45 ℃, and filter to reclaim insoluble solid.Solid in 40 ℃ of drying under reduced pressure, is obtained 61.9g half look solid state title compound (theoretical value 80%).This compound is a white powder, and fusing point is 201-208 ℃ (decomposition).
NMR data (DMSO-d
6) 6:H:4.16 (S, 3H), 8.21 (d (J=2.1Hz), 1H)
12. prepare two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1, the 5-C) pyrimidines of 2,2 '-two sulphur
Preparation 2.9g (13.5mmol) 5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidines-2 (the 3H)-solution of thioketones in the 30ml acetonitrile, and under nitrogen stirs, add 0.80ml (7.8mmol) 30% hydrogen peroxide in room temperature.Temperature is raised to 34 ℃ by 21 ℃.Allow about 1 hour of mixture reaction, add 15ml water then, and mixture is cooled to-5 ℃.The throw out that reclaim to form by vacuum filtration with every part of 10ml washing of 1: 1 mixture (in 5 ℃) and drying of two parts of water and acetonitrile, obtains 2.7g (theoretical value 93%) the Powdered title compound of oldlace, and its fusing point is 215-216 ℃.
Ultimate analysis: C
14H
12F
2N
8O
2S
2
Calculated value: %C, 39.4; %H, 2.83; %N, 26.3
Measured value; %C, 39.6; %H, 2.75; %N, 25.9
13. by 5-oxyethyl group-7-fluoro-1,2,4-triazolo (4,3-C) pyrimidines-3 (2H) thioketones preparation 2,2 '-two sulphur two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine)
Method A: preparation 167g (0.76mol) 5-oxyethyl group-7-fluorine (1,2,4)-triazolo (4,3-C) mixture of the dehydrated alcohol of pyrimidine-3 (2H) thioketones and 1.67 liters of toluene sex change, and under ℃ strong mixing and cooling, add 30% sodium ethylate of 331ml (0.887mol) in ethanol inward.Reaction is with a small amount of heat release, and heterogeneous oldlace mixture becomes plum solution.This solution was kept 2.25 hours in 5 ℃-10 ℃, then with 150ml with the water-reducible 6.25N hcl acidifying of 685ml.Allow the gained mixture be raised to room temperature (23 ℃), under agitation add 43.4ml30% superchlorination hydrogen water capacity liquid (0.43mol) then.Temperature is raised to 33 ℃, after 30 minutes, measures according to HPLC, and all thioketones raw materials all are consumed.Mixture is cooled to 20 ℃, the title compound that is settled out by filtered and recycled, and in 5 ℃ with two parts every part 600ml water, again with the washing of 350ml50% aqueous ethanolic solution.The gained white solid is in 35 ℃ of drying under reduced pressure, obtains 154g measures purity about 90% by HPLC title compound (theoretical value 86%).
Method B: be 68% and contain 1.89 parts of 5-oxyethyl group-7-fluoro-1 according to purity assay, 2, the solid mixture of 4-triazolo (4,3-C) pyrimidine-3 (2H) thioketones and sulphur, 2% following water and some acetonitriles dilutes with 8.61 parts of dehydrated alcohols, and mixture is cooled to 10 ℃.Under agitation, add the ethanolic soln (3.21 parts) of 21wt% sodium ethylate, behind the several minutes, with mixture filtering sulphur, remaining filtrate.Sulphur is with 0.484 part of absolute ethanol washing, and diafiltration ethanol is added in the filtrate.Allow the filtrate mixture in 10 ℃ of reactions, until complete isomerization.Then, in stirring and cooling so that temperature be lower than under 25 ℃ the condition, with mixture with 1.16 part of 37% aqueous hydrochloric acid acidifying, in stirring and cooling so that temperature be lower than under 30 ℃ the condition, slowly add 30wt% aqueous hydrogen peroxide solution (0.602 part), adding finishes, restir mixture 30 minutes.Filtered and recycled forms precipitation in pressure regulating equipment, and with 3.4 parts of ethanol and 8.70 parts of water washings, obtains the title compound of hygroscopicity solid state.
14. by 4, two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1, the 5-C) pyrimidines of 6-two fluoro-2-oxyethyl group pyrimidines preparation 2,2 '-two sulphur
Preparation is by 32.7g (0.202mol) 2-oxyethyl group-4 in reactor, the mixture that 6-difluoroethoxy pyrimidine, 59g acetonitrile and 36g water constitute, and mixture stirred under nitrogen and be cooled to about 5 ℃.Under stirring and cooling off,, add 21.3g (0.208mol) triethylamine inward to keep the speed that temperature of reaction is lower than 15 ℃.Add and after heat release calms down, allow mixture be raised to room temperature at all hydrazine monohydrates so that react completely.Obtain containing about 32.7g (0.202mol) 2-oxyethyl group-4-fluoro-6-diazanyl pyrimidine and be dissolved in the solution that about 95g contains water-acetonitrile.
The above 2-oxyethyl group that obtains-4-fluoro-6-diazanyl pyrimidine is dissolved in the solution that contains water-acetonitrile and places reactor, under nitrogen stirs, add 23.1g (0.303mol) dithiocarbonic anhydride.After about 15 minutes, in stirring and cooling so that temperature maintenance under about 25-30 ℃ condition, adds 23.8g (0.210mol) 30wt% aqueous hydrogen peroxide solution.Form precipitation.Allow about 1 hour of mixture reaction, be cooled to 0 ℃ then.Then, with its filtered and recycled throw out.Throw out is earlier removed impurity with 2 parts of each 75ml cold water washings, and then with 2 parts of acetonitrile washing dehydrations that each 50ml is cold.Measure according to HPLC, gained 48.7g solids is confirmed as 71%5-oxyethyl group-7-fluoro-1,2, and 4-triazolo (4,3-C) pyrimidines-3 (2H) thioketones (35g, theoretical value 80%) also according to Karl Fischer titration, contains the water below 2%.The elementary sulfur by product is main impurity.
With the 48.7g (0.16mol) that obtains the above 5-oxyethyl group-7-fluoro-1,2 as the mixture of 71% sulfur-bearing and acetonitrile, 4-triazolo (4,3-C) pyrimidine-3 (2H) thioketones and 150g dehydrated alcohol merge, and mixture is cooled to about 0 ℃.In cooling and stirring so that temperature maintenance under 5-15 ℃ condition, adds 21% sodium ethylate of 67.7g (0.21mol) in ethanol inward.The PH of mixture about 12.Mixture filtering solid (insoluble sulphur), and use the 20g absolute ethanol washing.Allow filtrate (comprising the ethanol washing lotion) react again about 2 hours in about 7 ℃, add 21.7g (0.22mol) concentrated hydrochloric acid then, obtain 5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H) thioketones of the oldlace solid state in ethanol.
The mixture of 5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H) thioketones in ethanol that obtains above used 22.6g (0.199mol) 30% hydrogen peroxide treatment under stirring at room.There is gentle heat release.After 40 minute reaction period, filtering mixt is to reclaim throw out.Throw out with two parts of each 100ml ethanol and two parts of each 100ml water washings, and in 37 ℃ of drying under reduced pressure, is obtained the light yellowish brown solid state title compound of 30.9g (theoretical value 65%, by 2-oxyethyl group-4,6-fluoropyrimidine) purity 90%.
15. by 2,2 '-two sulphur two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine) preparation 2-chlorosulfonyl-5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine
Method A: preparation contains 53.3g88% purity (0.11mol) 2, the mixture of 2-two sulphur two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine), 483g methylene dichloride and 12.0g water, and be cooled to about 5 ℃.(42.5g 0.60mol), cools off and stirring lasts 2.5 hours simultaneously, is not higher than about 15 ℃ so that temperature is not raised to blast chlorine toward this mixture.In the process that adds chlorine, add 37.1g water again.Originally the solid of Cun Zaiing becomes sticky earlier, all becomes solution then on the matrix.With about 200ml water dilution gained mixture, and be separated.Golden organic phase with three parts of each 400ml water washings, is used dried over mgso, filter, and in the bath temperature up to 38 ℃, reduction vaporization concentrates.The 59.5g of contained title compound content in resistates (theoretical value 96%), and be wax shape gold look solid.This material of special 12.66g part is dissolved in about 30ml methylene dichloride, the about 30ml hexane of adding and cooling and carries out purifying.By the throw out that filtered and recycled forms, drying obtains 8.15g white solid title compound.Also obtained 3.16g second product.Use spectroscopic identification, the compound of report is identical in this product and the United States Patent (USP) 5,163,995.
Mode B: preparation contains 2 of 212.5g (0.44mol) purity 88% in reaction flask, two (5-oxyethyl group-7-fluorine (1,2, the 4) triazolos (1 of 2 '-two sulphur, 5-C) pyrimidine), the mixture of 1985g methylene dichloride and 99.0g water, and water/ice-cooled to about 5 ℃.Under cooling and stirring, in flask, blast common 170g (2.4mol) chlorine just above liquid level, last 4 hours, so that not being raised to, temperature is not higher than about 15 ℃.The initial solid that exists becomes sticky earlier, becomes solution then basically entirely.The gained mixture dilutes with about 300g cold water and the cold 6.25N hydrochloric acid of 220g and is separated.Golden organic phase is dry on sal epsom, and filtration, reduction vaporization concentrate, and further dry in the decompression baking oven in room temperature.201.6g gold look solid residue is the title compound (theoretical value 74.5%) of purity 91% (press HPLC measure).
16. prepare 2-chlorosulfonyl-5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine by 5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidines-2 (3H) thioketones
Will be by 3.7g (17.3mmol) 5-oxyethyl group-7-fluorine (1,2,4) mixture of triazolo (1,5-C) pyrimidine-2 (3H) thioketones, 45ml methylene dichloride and 15ml water places the three-necked flask of outlet pipe, chlorine inlet spray tube and the cooling bath of being furnished with mechanical stirrer, being connected to the causticity air-washer.Do not obtain competition solution.Under stirring and cooling off, chlorine is blasted solution (0 ℃) until adding 7.0g (99mmol).Solid all dissolves.Water phase separated and organic phase, the organic phase dried over mgso, and reduction vaporization is concentrated, obtains the title compound as resistates.The product that reclaims is the orange solids of purity about 88%, about 3.6g (theoretical value 75%).Press spectroscopic identification, the compound of report is identical in this compound and the United States Patent (USP) 5,163,995.
Claims (8)
1. two (5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidine) compounds of 2,2 of following formula '-two sulphur:
Wherein
One of Y and Z represent F, Cl, and Br, R ' or OR ', another represents H, and
Each represents CH independently R and R '
3Or C
2H
5
2. according to the described compound of claim 1, wherein one of Y and Z represent F or Cl, and another represents H.
3. according to the described compound of claim 2, the compound that wherein makes is following a kind of compound; 2,2 '-two sulphur two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine), 2,2 '-two sulphur two (8-fluoro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidine) and 2,2 '-two sulphur two (8-chloro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidine).
4. the using method of two (5-alkoxyl group (1,2,4)-triazolo (1, the 5-C) pyrimidine) compounds of following formula 2,2 '-two sulphur:
Wherein
One of Y and Z represent F, Cl, and Br, R ' or OR ', another represents H; And
Each represents CH independently R and R '
3Or C
2H
5, the method is characterized in that helping under the condition of oxychlorination, in a kind of suitable reaction medium, handle this compound with at least 5 moles of chlorine, obtain following formula 2-chlorosulfonyl-5-alkoxyl group (1,2,4) triazolo (1,5-C) pyrimidine compound:
Wherein, R, Y and Z definition are as above.
5. in accordance with the method for claim 4, wherein this method is carried out at-10 ℃-30 ℃.
6. in accordance with the method for claim 4, wherein handle one of Y and Z and represent F or Cl and another to represent 2 of H, two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) compounds of 2-two sulphur.
7. in accordance with the method for claim 6, wherein handle R and represent 2 of ethyl, two (5-alkoxyl group (1,2,4) triazolo (1, the 5-C) pyrimidine) compounds of 2-two sulphur.
8. in accordance with the method for claim 6, the compound that wherein makes is following a kind of compound; 2,2 '-two sulphur two (5-oxyethyl group-7-fluorine (1,2,4) triazolo (1,5-C) pyrimidine), 2,2 '-two sulphur two (8-fluoro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidine) and 2,2 '-two sulphur two (8-chloro-5-methoxyl group (1,2,4) triazolo (1,5-C) pyrimidine).
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| CN98104475A CN1052484C (en) | 1993-11-05 | 1998-02-19 | 5-Alkoxy [1,2,4] triazolo [1,5,-C] pyrimidine -2[3H]-thione compounds and their use |
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| US08/148,790 US5488109A (en) | 1993-11-05 | 1993-11-05 | 5-alkoxy[1,2,4]triazolo[1,5-c]pyrimidine-2(3H)--thione compounds and their use in the preparation of and 2-chlorosulfonyl-5-alkoxy[1,2,4]triazolo[1,5-c]-pyrimidine compounds |
| CN98104475A CN1052484C (en) | 1993-11-05 | 1998-02-19 | 5-Alkoxy [1,2,4] triazolo [1,5,-C] pyrimidine -2[3H]-thione compounds and their use |
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| EP0343752A1 (en) * | 1988-05-25 | 1989-11-29 | DowElanco | Alkoxy-1,2,4-triazolo (1,5-c) pyrimidine-2-sulfonamides, process for their preparation and intermediates |
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| EP0343752A1 (en) * | 1988-05-25 | 1989-11-29 | DowElanco | Alkoxy-1,2,4-triazolo (1,5-c) pyrimidine-2-sulfonamides, process for their preparation and intermediates |
| US5163995A (en) * | 1988-05-25 | 1992-11-17 | Dowelanco | Herbicidal alkoxy-1,2,4-triazolo[1,5-c]pyrimidine-2-sulfonamides |
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