WO2020114376A1 - 一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法 - Google Patents
一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法 Download PDFInfo
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- WO2020114376A1 WO2020114376A1 PCT/CN2019/122597 CN2019122597W WO2020114376A1 WO 2020114376 A1 WO2020114376 A1 WO 2020114376A1 CN 2019122597 W CN2019122597 W CN 2019122597W WO 2020114376 A1 WO2020114376 A1 WO 2020114376A1
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- dithiodibenzamide
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- chemical intermediate
- compound according
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- 0 *c1c(*)cccc1 Chemical compound *c1c(*)cccc1 0.000 description 4
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/22—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of hydropolysulfides or polysulfides
- C07C319/24—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of hydropolysulfides or polysulfides by reactions involving the formation of sulfur-to-sulfur bonds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/50—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
- C07C323/62—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/64—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and sulfur atoms, not being part of thio groups, bound to the same carbon skeleton
Definitions
- the invention relates to a compound as an important chemical intermediate, in particular, to a preparation method of a chemical intermediate 2,2'-dithiodibenzamide compound.
- 2,2'-Dithiodiphenylamide compounds are an important class of chemical intermediates and an important intermediate of various chemical products. There are many ways to synthesize 2,2'-dithiodiphenyl compounds, as shown in the following reaction formula:
- Method one J. Am. Chem. Soc., 1989, 111, 665 has highly toxic raw materials, expensive reagents, and complicated operations, which cannot meet the needs of large-scale production.
- Method 2 (Synth. Commu., 1995, 25, 227) has expensive raw materials and high production cost, which is not suitable for large-scale applications.
- Method 3 (ChemMedChem, 2017, 12, 714) is made of easy drugs, which is not only expensive, but also has a complicated production process. In the production process, a large amount of wastewater containing metal ions will be generated, which pollutes the environment and does not meet the development needs.
- Method 4 Choinese Journal of Pharmaceutical Industry, 1993, 24, 418; Adv. Synth. Catal., 2015, 357, 2205) has expensive raw materials and harsh reaction conditions, which cannot be repeated and is not suitable for large-scale production.
- the object of the present invention is to provide a method for preparing a chemical intermediate 2,2'-dithiodibenzamide compound, through the 2-position substituted benzamide compound and sulfur reagent The reaction produces a chemical intermediate 2,2'-dithiodiphenylamide compound.
- the preparation method is low in cost, low in pollution, and environmentally friendly.
- the invention provides a preparation method of a chemical intermediate 2,2'-dithiodiphenylamide compound.
- aprotic solvent under the joint action of a metal salt and a ligand, the 2-position substituted
- the benzamide compounds react with sulfur reagents to generate 2,2'-dithiodibenzamide compounds,
- R1 and R2 are the same or different, and are respectively represented as any one of H, C 1 -C 8 linear alkyl or branched alkyl, benzene ring or aromatic ring.
- X Cl, Br, F, I, NO 2 , SO 3 R′;
- R is a linear or branched alkyl group of H, C 1 -C 8 , benzene ring or aromatic ring.
- the substituent X of the 2-substituted benzamide is any one of Cl, Br, F, I, NO 2 , and SO 3 R′; wherein the sulfonyl group may be methanesulfonyl, benzenesulfonyl, or toluenesulfonate Any group in the acyl group; the amide R substituent is any substituent in H, C 1 -C 8 linear alkyl or branched alkyl, benzene ring or aromatic ring.
- the preparation of the chemical intermediate 2,2'-dithiodibenzamide-based compound is substituted at the 2-position of the benzamide-based compound.
- the preferred compound is 2-iodobenzamide or 2-bromobenzamide-based compound. .
- the molar ratio of the 2-position substituted benzamide compound to the sulfur reagent is 1:1-10.
- the molar ratio of the 2-substituted benzamide compound to the sulfur reagent is 1:3-8.
- the molar ratio of the 2-substituted benzamide compound to the metal salt is 1:0.001-10. More preferably, the molar ratio of the benzamide compound to the metal salt is 1:0.01-2.0.
- the molar ratio of the 2-position substituted benzamide compound to the ligand is 1:0.001-10. More preferably, the molar ratio of the benzamide compound to the ligand is 1:0.01-2.0.
- the sulfur reagent is sodium sulfide, sodium sulfide hydrate, potassium sulfide, lithium sulfide, ammonium sulfide, elemental sulfur, carbon disulfide, methyl mercaptan, ethyl mercaptan, propyl mercaptan, thiophenol, butyl mercaptan or sulfur Any one or two or more of the substitution reagents are mixed. More preferably, the sulfur reagent is sodium sulfide or methyl mercaptan.
- the metal salt is cuprous chloride, copper chloride, cuprous bromide, copper bromide, cuprous oxide, copper oxide, cuprous iodide, copper iodide, copper sulfate, copper acetate, chloride Any one of nickel or transition metal salt compounds. More preferably, the metal salt is cuprous iodide.
- the ligand is any one of triphenylphosphine, ethylene glycol, amino alcohol, amino acid, glycine, oxalate, substituted oxalate, phosphine-containing compound or nitrogen-containing compound. More preferably, the ligand is an amino alcohol.
- the solvent is toluene, xylene, DMF (dimethylformamide), DMSO (dimethylsulfoxide), DMAc (N,N-dimethylacetamide), NMP (N-methyl- 2pyrrolidone), HMPA (hexamethylphosphoric triamide), acetamide, 1,2-dimethylimidazole, 1,3-dimethylimidazole, DMPU (1,3-dimethyl-3,4, 5,6-tetrahydro-2-pyrimidinone) any one or a mixture of two or more solvents. More preferably, the solvent is xylene.
- the reaction conditions of the reaction are: the reaction temperature is 80-200°C, and the reaction time is 4-24 hours. More preferably, the reaction conditions are: reaction time 6-12 hours.
- the solvent used for recrystallization in the reaction includes: ethanol, methanol, isopropanol, toluene, acetone, ethyl acetate, methylene chloride, chloroform, methyl tert-butyl ether, isopropyl ether, diethyl ether, petroleum ether , Cyclopentane, cyclohexane, cycloheptane, n-pentane, n-hexane and n-heptane mixed solvent of one or any of several solvents, recrystallization temperature 50 ⁇ 100 °C. More preferably, the solvent for recrystallization is ethanol, and the recrystallization temperature is 60°C.
- the present invention has the following beneficial effects:
- 2,2'-Dithiodibenzamide compounds are an important class of chemical intermediates and important intermediates of various chemical products; traditional methods include: 1. It uses phthalic anhydride as a raw material to undergo an amidation reaction, esters Sulfuration can only be carried out by chemical reaction, Huffman degradation, diazotization, substitution and replacement multi-step reactions; 2. Sulfur coupling reaction is carried out using expensive iodine or bromo reagents as raw materials. Both of them are not in line with the actual production requirements in terms of cost and environment, and cannot meet the market demands.
- the invention has a simple synthetic route for preparing chemical intermediate 2,2'-dithiodibenzamide compounds, low raw material cost, suitable for large-scale, low-cost, low-pollution production needs, with high separation efficiency and low pollution And other advantages, more in line with green chemistry.
- the invention proposes a preparation method of chemical intermediate 2,2'-dithiodibenzamide compound, in a high boiling point, aprotic solvent, under the joint action of metal salt and ligand, the 2-position is substituted
- the benzamide compounds react with sulfur reagents to generate 2,2'-dithiodibenzamide compounds.
- the chemical intermediate 2,2'-dithiodibenzamide compounds has the structural formula:
- R 1 and R 2 are the same or different, and are represented as any one of H, C 1 -C 8 linear alkyl or branched alkyl, benzene ring or aromatic ring.
- X Cl, Br, F, I, NO 2 , SO 3 R′;
- R is a linear or branched alkyl group of H, C 1 -C 8 , benzene ring or aromatic ring.
- the substituent X of the 2-substituted benzamide is any one of Cl, Br, F, I, NO 2 , and SO 3 R′; wherein the sulfonyl group may be methanesulfonyl, benzenesulfonyl, or toluenesulfonate Any group in the acyl group; the amide R substituent is any substituent in H, C 1 -C 8 linear alkyl or branched alkyl, benzene ring or aromatic ring.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (12)
- 根据权利要求1所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述反应在金属盐与配体的催化作用下,在溶剂中反应。
- 根据权利要求2所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述2-位取代的苯甲酰胺类化合物与所述金属盐的摩尔比为1:0.001~10。
- 根据权利要求2所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述2-位取代的苯甲酰胺类化合物与所述配体的摩尔比为1:0.001~10。
- 根据权利要求2所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述金属盐为氯化亚铜、氯化铜、溴化亚铜、溴化铜、氧化亚铜、氧化铜、碘化亚铜、碘化铜、硫酸铜、醋酸铜、氯化镍或过渡金属盐类化合物中的任意一种。
- 根据权利要求2所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述配体为三苯基膦、乙二醇、氨基醇、氨基酸、甘氨酸、草酸胺、取代草酸胺、含膦的化合物或含氮的化合物中的任意一种。
- 根据权利要求2所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述溶剂为甲苯、二甲苯、DMF、DMSO、DMAc、NMP、HMPA、乙酰胺、1,2-二甲基咪唑、1,3-二甲基咪唑、DMPU中任意一种或两种以上的混合溶剂。
- 根据权利要求1-7项中任意一项所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述2-位取代的苯甲酰胺类化合物与所述硫试剂的摩尔比为1:1-10。
- 根据权利要求1-7项中任意一项所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述2-位取代的苯甲酰胺类化合物与所述硫试剂的摩尔比为1:1-7。
- 根据权利要求1-7中任意一项所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述硫试剂为硫化钠、硫化钠水合物、硫化钾、硫化锂、硫化铵、硫单质、二硫化碳、甲硫醇、乙硫醇、丙硫醇、硫酚、丁硫醇或硫代试剂其中任意一种或两种以上混合。
- 根据权利要求1-7中任意一项所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述反应,反应条件为:反应温度80~200℃,反应时间4~24小时。
- 根据权利要求1-7中任意一项所述的一种化工中间体2,2'-二硫代二苯酰胺类化合物的制备方法,其特征在于:所述方法包括:将得到的粗品进行重结晶,用于重结晶的溶剂为乙醇、甲醇、异丙醇、甲苯、丙酮、乙酸乙酯、二氯甲烷、氯仿、甲基叔丁基醚、异丙醚、乙醚、石油醚、环戊烷、环已烷、环庚烷、正戊烷、正已烷或正庚烷中一种或两种以上的混合溶剂,所述重结晶温度50~100℃。
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| CN201811477449.1 | 2018-12-05 | ||
| CN201811477449.1A CN111269159B (zh) | 2018-12-05 | 2018-12-05 | 一种化工中间体2,2′-二硫代二苯酰胺类化合物的制备方法 |
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| WO2020114376A1 true WO2020114376A1 (zh) | 2020-06-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155278A (zh) * | 1994-08-05 | 1997-07-23 | 沃尼尔·朗伯公司 | 作为抗菌剂和抗病毒剂的芳硫基化合物 |
| WO1999065871A2 (en) * | 1998-06-19 | 1999-12-23 | The Government Of The United States Of America Represented By The Secretary, Department Of Health And Human Services | Thiolesters and uses thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101962366A (zh) * | 2010-09-15 | 2011-02-02 | 北京理工大学 | 一种二苯基硫醚连接双咪唑啉配体化合物及其制备方法 |
| CN105085434B (zh) * | 2014-05-09 | 2018-02-09 | 上海特化医药科技有限公司 | 硫乙拉嗪或其中间体的制备方法 |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155278A (zh) * | 1994-08-05 | 1997-07-23 | 沃尼尔·朗伯公司 | 作为抗菌剂和抗病毒剂的芳硫基化合物 |
| WO1999065871A2 (en) * | 1998-06-19 | 1999-12-23 | The Government Of The United States Of America Represented By The Secretary, Department Of Health And Human Services | Thiolesters and uses thereof |
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| CN111269159B (zh) | 2021-11-02 |
| CN111269159A (zh) | 2020-06-12 |
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