WO2010130124A1 - 含砜基脂肪胺的制备新工艺及其新盐 - Google Patents
含砜基脂肪胺的制备新工艺及其新盐 Download PDFInfo
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- WO2010130124A1 WO2010130124A1 PCT/CN2009/074958 CN2009074958W WO2010130124A1 WO 2010130124 A1 WO2010130124 A1 WO 2010130124A1 CN 2009074958 W CN2009074958 W CN 2009074958W WO 2010130124 A1 WO2010130124 A1 WO 2010130124A1
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- ethylmethylsulfone
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- sulfone
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
- C07C315/04—Preparation of sulfones; Preparation of sulfoxides by reactions not involving the formation of sulfone or sulfoxide groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C317/00—Sulfones; Sulfoxides
- C07C317/26—Sulfones; Sulfoxides having sulfone or sulfoxide groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton
- C07C317/28—Sulfones; Sulfoxides having sulfone or sulfoxide groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton with sulfone or sulfoxide groups bound to acyclic carbon atoms of the carbon skeleton
Definitions
- the invention relates to a novel process for preparing a pharmaceutical intermediate containing a sulfone-based fatty amine and a salt thereof, and 2-(N,N-dibenzylamino)ethylmethylsulfone obtained by the process (ie, ⁇ , ⁇ - Dibenzyl-2-methylsulfonylethylamine) and its salts and uses, and the preparation and preparation of 2-(amino)ethylmethylsulfone new salt using a sulfone-containing fatty amine or its hydrochloride.
- Sulfone-containing fatty amines and salts thereof are important intermediates for synthesizing certain pharmaceutically active ingredients.
- 2-Methylsulfonylethylamine i.e., 2-(amino)ethylmethylsulfone
- the literature reports the synthesis of 2-methylsulfonylethylamine as follows:
- This synthetic route produces the hydrochloride salt of 2-methylsulfonylethylamine.
- diborane is used as the selective injection reducing agent, the cost is high, and the hydrochloride is difficult to be purified, and the large-scale industrial production operation of the preparation process is difficult.
- One object of the present invention is to overcome the deficiencies in the prior art and to provide a novel process for the preparation of a sulfone-containing fatty amine and a salt thereof.
- Another object of the present invention is to provide a novel intermediate 2-(indole, fluorenyl-dibenzylamino)ethyl methyl sulfone obtained by a novel process for preparing a sulfone-containing fatty amine and a salt thereof. (ie, hydrazine, bis-dibenzyl-2-methylsulfonylethylamine) and its salts and uses.
- a third object of the present invention is to provide a 2-(amino)ethylmethylsulfone or a hydrochloride thereof (i.e., 2-A) a new salt of 2-(amino)ethylmethylsulfone prepared by sulfonylethylamine hydrochloride (i.e., 2-methylsulfonylethylamine new salt)
- the present invention provides a sulfone-containing fatty amine and a salt thereof
- the preparation of the new process includes the following steps:
- the sulfone-substituted sulfonate meets the following
- R 2 Alkyl, Aryl
- R 3 H, Methyl, Ethyl, n-Propyl
- step B uses ammonia or an amine as a substitution reagent to prepare an amine, and the reaction formula is as follows:
- Ethyl ether After the above substitution reaction is prepared to form an amine, the obtained amine can be further salted with an acid.
- the above substitution reaction can be carried out at room temperature under normal pressure.
- an ammonia or an amine is directly used as a solvent, or an organic solution prepared by dissolving ammonia or an amine in an organic solvent such as alcohol, chloroform or dichloromethane as a solvent, a sulfone-substituted sulfonate and a substitution thereof.
- the ratio of reagent ammonia or amine is: The amount of ammonia or amine is more than 2 times the theoretical amount.
- the solvent which can be used for the salt formation reaction is a linear or cyclic ether, an alcohol or the like.
- the above amine salt formation reaction conditions are: normal pressure, room temperature.
- the acid is selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, boric acid, sulfonic acid or substituted sulfonic acid such as p-toluenesulfonic acid and the like.
- the raw material in the above step A is 2'-(methylsulfonyl)ethyl p-toluenesulfonate
- the substitution reagent is ammonia gas
- the solvent used for the reaction is diethyl ether.
- the solvent used in the salt formation reaction is ethanol.
- the corresponding sulfone-containing fatty amines and salts thereof can be obtained by the above process.
- the synthesis of 2-(methylsulfonyl)ethylamine hydrochloride by this synthetic route is less costly than the reduction of 2-(methylsulfonyl)acetonitrile in diborane.
- 2-(N,N-dibenzylamino)ethylmethylsulfone and salts thereof can also be produced by the above process.
- R hydrogen, halogen, alkoxy, etc.
- HmA hydrochloric acid, sulfuric acid, phosphoric acid, etc.
- the step 2 uses hydrazine, hydrazine-dibenzylamine as a substitution reagent to prepare an amine, and then forms a salt with an acid (HmA) in ethanol, and the reaction formula is as follows:
- the above substitution reaction can be carried out under normal temperature and normal pressure.
- the above 2-(N,N-dibenzylamino)ethylmethylsulfone and its salt are catalytically hydrogenated to conveniently prepare 2-(amino)ethylmethylsulfone and a salt thereof.
- the process for preparing 2-(amino)ethylmethylsulfone and a salt thereof using 2-(N,N-dibenzylamino)ethylmethylsulfone and a salt thereof is as follows: in an organic solvent such as an alcohol or an ether or the above organic solvent In the alkaline solution, add 2-(N, N-dibenzylamino)ethylmethylsulfone or its salt, add Raney nickel, palladium carbon or platinum dioxide, and hydrogenate and reduce under a certain pressure. To 2-(amino)ethylmethylsulfone or its salt.
- the reaction formula is as follows:
- R H, X, Alkoxy, etc.
- HmA hydrochloric acid, sulfuric acid, phosphoric acid, and the like.
- the alkali solution of the organic solvent such as an alcohol or an ether is prepared by dissolving sodium hydroxide in ethanol or dissolving an organic base such as triethylamine in ethanol or diethyl ether.
- the Raney nickel, palladium carbon or platinum dioxide is a catalyst for the catalytic hydrogenation reaction and is generally added in an amount of from 1% to 20% by weight based on the weight of the reactant.
- the reaction conditions of the hydrogenation reduction reaction are generally: a temperature of 10-9 CTC, a pressure of 5-40 atmospheres, The reaction is completed within 1-5 hours.
- the invention also discloses a novel 2-(amino)ethylmethylsulfone salt and a preparation method thereof.
- the 2-(amino)ethylmethylsulfone new salt has the following structure:
- HmA formic acid or substituted carboxylic acid, phosphoric acid, sulfonic acid or substituted sulfonic acid such as p-toluenesulfonic acid, sulfuric acid, carbonic acid, boric acid or substituted boronic acid, other hydrohalic acid other than hydrogen chloride.
- the new 2-(amino)ethylmethylsulfone salt may be 2-(amino)ethylmethylsulfone carboxylate, phosphate, dihydrogen dihydrogen salt, dibasic hydrogen phosphate, sulfonate, sulfate , hydrogen sulfate, carbonate, bicarbonate, borate, other hydrohalide salts other than hydrochloride.
- 2-(amino)ethylmethylsulfone new salts such as 2-(amino)ethylmethylsulfone p-toluenesulfonate have the advantage of being easily purified with respect to 2-(amino)ethylmethylsulfone hydrochloride.
- the preparation of the new 2-(amino)ethylmethylsulfone salt can be carried out by any of the following methods:
- the 2-(amino)ethylmethylsulfone hydrochloride is converted to the free base in an organic solvent with an organic or inorganic strong base, and then reacted with an acid to form the corresponding salt.
- the organic or inorganic strong base may be selected from the group consisting of triethylamine, aqueous ammonia, hydroxide, and the like.
- the organic solvent may be selected from the group consisting of an alcohol, an ether, a substituted amide, and the like.
- the 2-(amino)ethylmethylsulfone hydrochloride is converted to the free base in an alkali solution of an organic solvent, and then different acids are added to obtain salts of different acid groups.
- the reaction formula of the above method is as follows:
- HmA formic acid or substituted carboxylic acid, phosphoric acid, sulfonic acid or substituted sulfonic acid, sulfuric acid, carbonic acid, boric acid or substituted boronic acid, other hydrohalic acid other than hydrogen chloride, etc., respectively, can obtain 2-(amino)ethyl group Different salts of sulfones.
- the above salt formation reaction is carried out at room temperature under normal pressure.
- the 2-(amino)ethylmethylsulfone hydrochloride is obtained by preparing 2-(N,N-dibenzylamino)ethylmethylsulfone as a raw material.
- the present invention is not only advantageous for reducing environmental pollution, but also can be used for large-scale preparation of 2-(amino)ethylmethylsulfone and a salt thereof, and is advantageous for preparing high-purity 2-(amino)ethylmethylsulfone hydrochloride.
- Example 2 Preparation of Methylsulfonylethylamine Hydrochloride
- the 2-(methylsulfonyl)ethylamine obtained in Example 1 was dissolved in 100 ml of ethanol, and a hydrogen chloride solution of ethanol was added thereto with stirring to precipitate a white solid. Filtration and drying gave 13 g of 2-(methylsulfonyl)ethylamine hydrochloride. The purity is 98.5% or more. Melting point 165. 1-167 ° C. The NMR analysis is consistent with the expected structure.
- Example 5 Preparation of 2-(Amino)ethylmethylsulfone hydrochloride
- the 2-(amino)ethylmethylsulfone obtained in Example 4 was dissolved in 100 ml of absolute ethanol, and a solution of hydrogen chloride in ethanol was added to pH 2 After stirring for 1 hour, filtration, the filter cake was washed with ethanol and dried to give 11 g of 2-(amino)ethylmethylsulfone hydrochloride.
- the purity is 98.5% or more. Melting point: 165. 3-167 degrees.
- the obtained product nuclear magnetic resonance spectrum was identical to the nuclear magnetic resonance spectrum of 2-(amino)-ethylmethylsulfone hydrochloride obtained in Example 2.
- Example 6 Preparation of 2-(Amino)ethylmethylsulfone Hydrogen Sulfate
- Example 8 Preparation of 2-(Amino)ethylmethylsulfone p-toluenesulfonate
- the oil obtained in Example 4 was prepared by dissolving 2-(amino)ethylmethylsulfone in 200 ml of absolute ethanol and adding 35 g. Water p-toluenesulfonic acid, heated to reflux, the solution was clarified, cooled to room temperature and placed in the refrigerator overnight. Filtration, washing with a small amount of absolute ethanol, gave 51 needle-like crystals. The purity is more than 98.5%. Melting point: 135-137 degrees.
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Description
含砜基脂肪胺的制备新工艺及其新盐 技术领域
本发明涉及一种医药中间体含砜基脂肪胺及其盐的制备新工艺, 利用该工艺制 得的 2-(N,N-二苄基氨基)乙基甲基砜 (即 Ν,Ν-二苄基 -2-甲砜基乙胺) 及其盐和用途, 以及利用含砜基脂肪胺或其盐酸盐制得的 2- (氨基) 乙基甲基砜新盐及制备。 背景技术 含砜基脂肪胺及其盐是合成某些具有药物活性成分的重要中间体。 2-甲砜基乙胺 (即 2- (氨基) 乙基甲基砜) 即为合成一种抗癌活性物的关键中间体之一。 文献报道 合成 2-甲砜基乙胺合成路线如下:
发明内容 本发明的一个目的是克服现有技术中的缺陷, 提供一种含砜基脂肪胺及其盐的制 备新工艺。 本发明的另一个目的是提供一种利用上述含砜基脂肪胺及其盐的制备新工艺制得 的一种新型的中间体 2-(Ν,Ν-二苄基氨基)乙基甲基砜 (即 Ν,Ν-二苄基 -2-甲砜基乙胺) 及其盐和用途。 本发明的第三个目的是提供一种利用 2- (氨基) 乙基甲基砜或其盐酸盐 (即 2-甲
砜基乙胺盐酸盐) 制得的 2- (氨基) 乙基甲基砜新盐 (即 2-甲砜基乙胺新盐) ( 本发明提供了一种含砜基脂肪胺及其盐的制备新工艺, 包括下列步骤:
A. 采用含砜基取代的磺酸酯为起始原料, 所述含砜基取代的磺酸酯符合如下通
〇 〇
(CH2)nCH2〇.
o S
Ri=alkyl
R2=Alkyl, Aryl
n=l~18 o S
R3=H, Methyl, Ethyl, n-Propyl
R4=H,(CH2)nR5 R5=Alkyl, Aryl, etc n=0或 1 所述步骤 B利用氨或胺为取代试剂, 制备胺, 反应式如下:
2=Alkyl, Aryl 4=H, (CH2)n 5 5=Alkyl, Aryl, etc n=l~18
Ethyl ether
上述取代反应制备成胺后还可进一步将制得的胺与酸成盐。 上述取代反应在室温常压下即能完成。 取代反应中, 以氨或胺直接做溶剂, 或者, 以将氨或胺溶于醇、 氯仿、 二氯甲浣 等有机溶剂后配制的有机溶液作溶剂, 含砜基取代的磺酸酯与取代试剂氨或胺的配比 为: 氨或胺的用量超过理论用量 2倍以上。 成盐反应可采用的溶剂为直链或环状醚, 醇等。 上述胺成盐反应条件为: 常压、 室温。 所述酸选自盐酸、 硫酸、 磷酸、 硼酸、 磺酸或取代磺酸如对甲苯磺酸等。 如本发明实施例列举的, 上述步骤 A中的原料为 2'- (甲砜基) 乙基对甲苯磺酸 酯, 取代试剂为氨气, 反应采用的溶剂为乙醚。 成盐反应采用的溶剂为乙醇。 利用上述工艺可得到相应的含砜基脂肪胺及其盐。采用该合成工艺路线合成 2-(甲 砜基) 乙胺盐酸盐较文献报道乙硼烷还原 2- (甲砜基) 乙腈成本低。 此外, 还可以利用上述工艺制备 2-(N,N-二苄基氨基)乙基甲基砜及其盐。
R=氢, 卤素, 烷氧基等 m=l-3, n=3-l
HmA=盐酸, 硫酸, 磷酸等
2-(N,N-二苄基氨基)乙基甲基砜的制备包括下列步骤:
1 )采用 2'- (甲砜基) 乙基对甲苯磺酸酯为起始原料, 所述 2'- (甲砜基) 乙基对 甲苯磺酸酯的结构式为:
上述取代反应在常温常压下即可进行。 上述 2-(N,N-二苄基氨基)乙基甲基砜及其盐经催化加氢, 可方便地制备 2- (氨基) 乙基甲基砜及其盐。 采用 2-(N,N-二苄基氨基)乙基甲基砜及其盐制备 2- (氨基) 乙基甲基砜及其盐的 工艺为: 在醇、 醚等有机溶剂或上述有机溶剂的碱溶液中, 加入 2-(N, N-二苄基氨基)乙 基甲基砜或它的盐, 加入 Raney镍、 钯碳或二氧化铂, 在一定压力下氢化还原, 即得
到 2- (氨基) 乙基甲基砜或它的盐。 反应式如下:
R=H, X, Alkoxy, etc.
m=l-3, n=3-l
HmA=盐酸, 硫酸, 磷酸等。 从而分别得到 2- (氨基) 乙基甲基砜不同的盐。 所述醇、 醚等有机溶剂的碱溶液是将氢氧化钠溶于乙醇, 或将有机碱三乙胺等溶 于乙醇或乙醚等配制。 所述 Raney镍、 钯碳或二氧化铂是作为催化加氢反应的催化剂, 其加入量一般为 反应物重量的 1%-20%。 所述氢化还原反应的反应条件一般为: 温度为 10-9CTC , 压力为 5-40大气压, 均
在 1-5小时内反应结束。 本发明还公开了一种 2- (氨基) 乙基甲基砜新盐及其制备方法。 所述 2- (氨基) 乙基甲基砜新盐具有如下结构:
HmA=甲酸或取代羧酸, 磷酸, 磺酸或取代磺酸如对甲苯磺酸, 硫酸, 碳酸, 硼酸或 取代硼酸, 除氯化氢外的其他氢卤酸等。 所述 2- (氨基) 乙基甲基砜新盐可以是 2- (氨基) 乙基甲基砜羧酸盐, 磷酸盐, 憐酸二氢盐, 磷酸氢二盐, 磺酸盐, 硫酸盐, 硫酸氢盐, 碳酸盐, 碳酸氢盐, 硼酸盐, 除盐酸盐外的其他氢卤酸盐等。 这些 2- (氨基) 乙基甲基砜新盐如 2- (氨基) 乙基甲 基砜对甲苯磺酸盐相对 2- (氨基) 乙基甲基砜盐酸盐有易于提纯的优点。
2- (氨基) 乙基甲基砜新盐的制备可采用以下任一方法:
A. 将 2-(N,N-二苄基氨基)乙基甲基砜经催化加氢制备 2- (氨基) 乙基甲基砜 后, 再将 2- (氨基) 乙基甲基砜在有机溶剂中与酸直接反应后制得;
B. 用有机或无机强碱在有机溶剂中将 2- (氨基) 乙基甲基砜盐酸盐变为游离 碱, 再与酸反应, 生成相对应的盐。 所述有机或无机强碱可选自三乙胺、 氨水、 氢氧化物等。 所述有机溶剂可选自醇、 醚、 取代酰胺等。 在有机溶剂的碱溶液中将 2- (氨基) 乙基甲基砜盐酸盐变成游离碱, 再分别加入 不同的酸, 即得到不同酸根的盐。 上述方法的反应式如下:
HmA=甲酸或取代羧酸, 磷酸, 磺酸或取代磺酸, 硫酸, 碳酸, 硼酸或取代硼酸, 除 氯化氢外的其他氢卤酸等 经上述反应, 可分别得到 2- (氨基) 乙基甲基砜不同的盐。 上述成盐反应在室温、 常压进行。 进一步的, 所述 2- (氨基) 乙基甲基砜盐酸盐是由 2-(N,N-二苄基氨基)乙基甲基 砜为原料制备获得。 本发明不仅有利于降低环境污染, 而且可以用于规模化制备 2- (氨基) 乙基甲基 砜及其盐, 且有利于制备高纯度 2- (氨基) 乙基甲基砜盐酸盐。 具体实施方式
实施例 1 2-甲砜基乙胺的制备
1000ml压力釜中加入 200毫升乙醚, 50克 2 ' - (甲砜基) 乙基对甲苯磺酸酯, 搅 拌, 通氨气至压力为十公斤左右。 搅拌, 在 50°C反应 1小时。 降温, 停止反应。 放出 过量的氨气。 出料, 静置过夜。 过滤, 母液浓縮, 得 2- (甲砜基) 乙胺产品。 该油状 物可直接用于下步成盐。 实施例 2 甲砜基乙胺盐酸盐的制备
将实施例 1制得的 2- (甲砜基) 乙胺溶于 100毫升乙醇, 搅拌下加入乙醇的氯化氢 溶液, 析出白色固体。 过滤, 干燥, 得 2- (甲砜基) 乙胺盐酸盐 13克。 纯度 98. 5% 以上。 熔点 165. 1-167°C。 核磁共振分析与预期结构一致。
¾NMR (DMS0-d6): 8. 44 (bs, 3H), 3. 50 (m, 2H), 3. 17 (m, 2H), 3. 09 (s, 3H)。 实施例 3 2-(N, N-二苄基氨基)乙基甲基砜的制备 将 139克 2-甲砜基乙醇对甲苯磺酸酯, 380毫升氯仿, 51克三乙胺依次加入到 1000 毫升四口烧瓶中, 水浴冷却, 通过平衡漏斗滴加 98克二苄胺, 内温不超过 35度, TC1 跟踪反应至原料 2-甲砜基乙醇对甲苯磺酸酯消失。 将反应液转入 1000毫升分液漏斗 中, 分别 200毫升水洗涤两次。 有机层用无水硫酸钠干燥过夜。 过滤, 滤饼用少量氯 仿洗涤, 滤液浓縮, 得油状物 107克。 用乙醇重结晶, 得白色结晶 2-(N, N-二苄基氨 基)乙基甲基砜 92 克。 熔点: 59-60 °C。 核磁共振分析与预期结构一致。 1HNMR(CDC13):7.33(bs, 10H), 3.64(s, 3H), 3.03(bs, 4H), 2.75(s,3H)。 实施例 4 2- (氨基) 乙基甲基砜的制备
1升压力釜中加入 400毫升乙醇, 加入实施例 3制得的 60克 2- (N, N-二苄基氨基) 甲基砜, 15克 Raney镍, 通氢气至压力 20公斤, 加热至 50度, 搅拌还原, TCL跟踪 反应至原料点小时。 冷却, 放出氢气, 过滤, 浓縮, 得 2- (氨基) 乙基甲基砜油状物。 所得油状物用于下步直接成盐。 实施例 5 2- (氨基) 乙基甲基砜盐酸盐的制备 将实施例 4得到的 2- (氨基) 乙基甲基砜溶于 100毫升无水乙醇, 加入氯化氢的乙 醇溶液, 至 pH2, 搅拌 1小时, 过滤, 滤饼用乙醇洗涤, 干燥, 得 11克 2- (氨基) 乙 基甲基砜盐酸盐。 纯度 98. 5%以上。 熔点: 165. 3-167度。 所得产物核磁共振图谱与实 施例 2得到的 2- (氨基) -乙基甲基砜盐酸盐的核磁共振图谱一致。 实施例 6 2- (氨基) 乙基甲基砜硫酸氢盐的制备
50升釜中加入 30升乙醇, 加入 0. 58公斤氢氧化钠, 搅拌溶解。 降温至 20度, 分 批加入 2. 3公斤 2- (氨基) 乙基甲基砜盐酸盐, 搅拌 0. 5小时。 过滤, 滤饼用乙醇洗 涤,洗涤液和滤液合并。冷至 10度左右,分批加入浓硫酸共 1. 4公斤,析出白色固体。
搅拌 2小时, 过滤, 乙醇洗涤, 得 2. 6公斤 2- (氨基) 乙基甲基砜硫酸氢盐。 所得产 物核磁共振图谱与预期结构相符。 实施例 7 2- (氨基) 乙基甲基砜硫酸盐的制备
50升釜中加入 30升乙醇, 加入 0. 58公斤氢氧化钠, 搅拌溶解。 降温至 20度, 分 批加入 2. 3公斤 2- (氨基) 乙基甲基砜盐酸盐, 搅拌 0. 5小时。 过滤, 滤饼用乙醇洗 涤,洗涤液和滤液合并。冷至 10度左右,分批加入浓硫酸共 0. 7公斤,析出白色固体。 搅拌 2小时, 过滤, 乙醇洗涤, 得 2. 0公斤 2- (氨基) 乙基甲基砜硫酸盐。 所得产物 核磁共振图谱与预期结构相符。 实施例 8 2- (氨基) 乙基甲基砜对甲苯磺酸盐的制备 采用实施例 4得到的油状物 2- (氨基) 乙基甲基砜溶于 200毫升无水乙醇, 加入 35 克一水对甲苯磺酸, 加热至回流, 溶液澄清, 冷却至室温后置于冰箱过夜。 过滤, 少 量无水乙醇洗涤, 得 51针状结晶体。 纯度达 98. 5%以上。 熔点: 135-137度。
¾NMR (DMS0-d6): 7. 86 (bs, 3H), 7. 44 ( d, 2H) , 7. 07 (d, 2H), 3. 38 (m, 2H), 3. 24 (m, 2H), 3. 10 (s, 3H) , 2. 27 (s, 3H)。
Claims
权利要求
一种含砜基脂肪胺及其盐的制备新工艺, 包括下列步骤:
A. 采用含砜基取代的磺酸酯为起始原料, 所述含砜基取代的磺酸酯符合如下通
Ri=alkyl R2=Alkyl, Aryl n=l~18
R3=H, Methyl, Ethyl, n-Propyl
R4=H,(CH2)nR5 R5=Alkyl, Aryl, etc n=0或 1
2. 如权利要求 1所述含砜基脂肪胺及其盐的制备新工艺, 其特征在于, 所述步骤 B 利用氨或胺为取代试剂与起始原料反应先制得含砜基脂肪胺, 其反应式如下:
2=Alkyl, Aryl 4=H, (CH2)n 5 5=Alkyl, Aryl, etc
n=l~18
3. 如权利要求 2所述含砜基脂肪胺及其盐的制备新工艺, 其特征在于, 所述步骤 B 在制得含砜基脂肪胺后, 还可进一步与酸成盐。
4. 如权利要求 3所述含砜基脂肪胺及其盐的制备新工艺, 其特征在于, 所述成盐反 应采用的溶剂为直链或环状醚, 醇等。
5. 如权利要求 1所述含砜基脂肪胺及其盐的制备新工艺, 其特征在于, 步骤 B中, 含砜基取代的磺酸酯与取代试剂氨或胺的配比为以氨或胺作溶剂, 或以氨或胺的 有机溶液作溶剂, 氨或胺的用量超过理论用量 2倍以上。
6. 如权利要求 1所述含砜基脂肪胺及其盐的制备新工艺, 其特征在于, 所述步骤 A 中 的起始原料为 2'- ( 甲砜基 ) 乙基对 甲 苯磺酸酯 , 结构式
制得的产物为 2-(N,N-二苄基氨基)乙基甲基砜及其盐, 结构式为:
R=氢, 卤素, 烷氧基等
m=l-3, n=3-l
HmA=盐酸, 硫酸, 磷酸等。
一种 2-(N,N-二苄基氨基)乙基甲基砜及其盐, 结构式为:
R=氢, 卤素, 烷氧基等
m=l-3 n=3-l
HmA=盐酸, 硫酸, 磷酸等 。
8. 如权利要求 7 所述的 2-(N,N-二苄基氨基)乙基甲基砜及其盐用于制备 2- (氨基) 乙基甲基砜及其盐。
9. 一种 2- (氨基) 乙基甲基砜及其盐的制备方法, 为将权利要求 7所述的 2-(N,N- 二苄基氨基)乙基甲基砜及其盐经催化加氢制得, 所使用的催化剂为 Raney镍、 钯 碳或二氧化铂。
10. 如权利要求 9 所述 2- (氨基) 乙基甲基砜及其盐的制备方法, 其反应式为:
R=H, X, Alkoxy, etc.
m=l-3, n=3-l
11. 一种 2- (氨基) 乙基甲基砜新盐, 具有如下结构:
HmA=甲酸或取代羧酸, 磷酸, 磺酸或取代磺酸, 硫酸, 碳酸, 硼酸或取代硼酸, 除 盐酸以外的其它氢卤酸等。
12. 如权利要求 11 所述的 2- (氨基) 乙基甲基砜新盐, 其特征在于, 制备游离的 2-
(氨基) 乙基甲基砜后, 再将 2- (氨基) 乙基甲基砜与酸直接反应后制得。
13. 如权利要求 11或 12所述 2- (氨基) 乙基甲基砜新盐的制备方法, 选自以下任一:
A. 将权利要求 Ί 所述的 2-(N,N-二苄基氨基)乙基甲基砜经催化加氢制备 2-
(氨基) 乙基甲基砜后, 再将 2- (氨基) 乙基甲基砜在有机溶剂中与酸直 接反应后制得;
B. 用有机或无机强碱在有机溶剂中将 2- (氨基) 乙基甲基砜盐酸盐变为游离 碱, 再与酸反应, 生成相对应的盐。
14. 如权利要求 13所述 2- (氨基) 乙基甲基砜新盐的制备方法, 其特征在于, 所述采 用的有机溶剂选自醇、 醚、 取代酰胺等。
HmA=甲酸或取代羧酸, 磷酸, 磺酸或取代磺酸如对甲苯磺酸, 硫酸, 碳酸, 硼酸或 取代硼酸, 除盐酸以外的其它氢卤酸等。
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CN2009100576941A CN101987829A (zh) | 2009-08-03 | 2009-08-03 | 一种2-(氨基)乙基甲基砜新盐及制备 |
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CN200910057693.7A CN101987828B (zh) | 2009-08-03 | 2009-08-03 | 一种2-(n,n-二苄基氨基乙基)甲基砜及其盐 |
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CN101367794A (zh) * | 2007-07-20 | 2009-02-18 | 上海恒瑞医药有限公司 | 喹唑啉类衍生物的制备方法及其在医药上的应用 |
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CN101367794A (zh) * | 2007-07-20 | 2009-02-18 | 上海恒瑞医药有限公司 | 喹唑啉类衍生物的制备方法及其在医药上的应用 |
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