SU1188166A1 - Method of producing monohydrate of mercaptoethylamintriacetic acid - Google Patents
Method of producing monohydrate of mercaptoethylamintriacetic acid Download PDFInfo
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- SU1188166A1 SU1188166A1 SU843735243A SU3735243A SU1188166A1 SU 1188166 A1 SU1188166 A1 SU 1188166A1 SU 843735243 A SU843735243 A SU 843735243A SU 3735243 A SU3735243 A SU 3735243A SU 1188166 A1 SU1188166 A1 SU 1188166A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- sulfur
- containing compound
- value
- followed
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002253 acid Substances 0.000 title claims 2
- 150000004682 monohydrates Chemical class 0.000 title claims 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 8
- VKPPFDPXZWFDFA-UHFFFAOYSA-N 2-chloroethanamine Chemical compound NCCCl VKPPFDPXZWFDFA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- JZOZRWUCUUPDPK-UHFFFAOYSA-N 1-imino-2H-1,3-thiazol-2-ide 1-oxide Chemical compound N=S1([C-]=NC=C1)=O JZOZRWUCUUPDPK-UHFFFAOYSA-N 0.000 claims abstract description 3
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract 4
- 150000001875 compounds Chemical class 0.000 claims abstract 4
- 150000003947 ethylamines Chemical class 0.000 claims abstract 4
- 239000011593 sulfur Substances 0.000 claims abstract 4
- 230000020477 pH reduction Effects 0.000 claims abstract 2
- 239000011541 reaction mixture Substances 0.000 claims abstract 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 3
- -1 mercaptoethylamine triacetic acid monohydrate Chemical compound 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 1
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical group OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
СПОСОБ ПОЛУЧЕНИЯ МОНОГВДРАТА МЕРКАПТОЭТИЛАМИНТРИУКСУСНОЙ КИСЛОТЫ взаимодействием производного этиламина с сер/содержащим соединением и монохлоруксусной кислотой в воднощелочной среде при 40-50°С с последующим подкислением реакцио нного раствора концентрированной сол ной кислотой до рН 1,5-2, отличающийс тем, что, с целью згвеличени выхода и упрощени процесса, в качестве производного этиламина используют хлорэтиламин, а в качестве серусодержащего соединени - иминотиазолидон , и процесс ведут в одну стадию путем последовательного введени компонентов в реакционную смесь.THE METHOD FOR OBTAINING MERCAPTOETHYLAMINTRI-ACETIC ACID MONOGHDRATE by reacting an ethylamine derivative with sulfur / containing compound and monochloroacetic acid in an aqueous alkaline medium at 40–50 ° C, followed by acidifying the solution of the concentrated solution with hydrochloric acid to 40–50 ° C with the mean pH of 50–50 ° C, the pH value of the ratio of the pH value of the pH value of 40–50 ° C, followed by acidification with the concentrated hydrochloric acid In order to increase the yield and simplify the process, chloroethylamine is used as an ethylamine derivative, and iminothiazolidone is used as a sulfur-containing compound, and the process is carried out in one stage by the introduction of the components into the reaction mixture.
Description
OD СХOD СХ
ОдOd
аbut
Изобретение относитс к способу получени моногидрата меркаптоэтиламинтриуксусной кислоты (ЮАТА) HOOCH C-S-CHjCHjN/ сн,соон вл ющейс одним из представителей класса комплексонов, примен емых во многих отрасл х промьштенности и народного хоз йства, Целью изобретени вл етс увели чение выхода и упрощение процесса. Пример 1. В четырехгорлую колбу емкостью 250 мл, снабженную механической мешалкой, обратным холодильником , термометром и капельно воронкой, помещают 23,2 г (0,2 М) иминотиазолидона и 30 мл воды. К су пензии при перемешивании в течение 10 мин прикапывают раствор 20 г (0,5 М) едкого натра в 30 мл воды. Нагревают при 100-102 С в течение 2 ч, после чего охлаждают до 60 70°С и в течение 5-10 мин прикапыва ют раствор 15,9 г (0,2 М) хлорэтиламина в 30 мл воды. Смесь перемешивают при 90-95°С в течение 2 ч, зат охлаждают и при 40-50°С осторожно в течение 30 мин прикапьтают раство 49 г (0,42 М). натриев.ой соли моно- хпоруксусной кислоты, поддержива при этом рН 9-10 с помощью едкого натра. Реакционную массу перемешивают при 40-50 С в течение 5-6 ч, з тем охлаждают и при температуре не Bbmie 18-20°С прикапьшают концентрированную сол ную кислоту до значени рН 1,5-2. Выпавший при сто нии бельй осадок МЭАТА отфильтровывают и пёрекристаллизовывают из гор чей воды. Продукт сушат при 60-70 С.. ПолучаютThis invention relates to a process for the preparation of mercaptoethylamine triacetic acid monohydrate (HUAH) HOOCH C-S-CHjCHjN / cn, soon being one of the representatives of the class of chelating agents used in many industrial and national industries. The aim of the invention is to increase the yield and simplify the process. Example 1. In a four-necked flask with a capacity of 250 ml, equipped with a mechanical stirrer, a reflux condenser, a thermometer and a dropping funnel, 23.2 g (0.2 M) of an iminothiazolidone and 30 ml of water are placed. With stirring, a solution of 20 g (0.5 M) sodium hydroxide in 30 ml of water is added dropwise with stirring for 10 minutes. The mixture is heated at 100-102 C for 2 h, then cooled to 60–70 ° C and a solution of 15.9 g (0.2 M) of chloroethylamine in 30 ml of water is added dropwise within 5–10 min. The mixture was stirred at 90-95 ° C for 2 hours, cooled, and at 40-50 ° C, a solution of 49 g (0.42 M) was added dropwise for 30 minutes. sodium salt of mono-chloroacetic acid, while maintaining a pH of 9-10 with caustic soda. The reaction mass is stirred at 40-50 ° C for 5-6 hours, then cooled and concentrated hydrochloric acid is added at a temperature of not Bbmie 18-20 ° C to a pH of 1.5-2. The pellet of MEATA, which precipitated upon standing, was filtered off and recrystallized from hot water. The product is dried at 60-70 C.
46,2 г МЭАТА, что составл ет 85,8% в расчете на хлорэтиламин.46.2 g of MEATA, which is 85.8% based on chloroethylamine.
Найдено, %: N 5,24; S 12,37. CgH,,NO,S Вычислено, %: N 5,20; S 11,90. П р и М е р 2. Процесс ведут аналогично примеру 1, с той разницей, что при получении МЭАТА реакционную массу перемешивают 2-3 ч при 40-50 С. При этом получают 34 г ЮАТА, что составл ет 62,5% от теоретического счита на хлорэтиламин. Найдено, %: N 5/19; S 12,34. CgH NOfiS Вычислено, %: N 5,20; S 11,90. Пример 3. Процесс ведут аналогично примеру t. При получении ЮАТА реакционную массу перемешивают 7-8 ч при 40-50°С. При этом получают л- 46 г МЭАТА, что составл ет 85,8% от теоретического, счита на хлорэтиламин. Найдено, %: N 5,28, S 12,46. HgO Вычислено, %: N 5,20, S 11,90. Меркаптоэтиламинтриуксусна кислота идентифицирована методом ПМРспектроскопии . В ПНР-спектре МЭАТА наблюдаютс две синглетные линии, одна из которых с S 3,84 м.д. относитс к метиленовым протокам иминодиацетат ной группировки,втора 8 3,35 м.д. - к метиленовым протонам тиогликолевой группировки. Два триплета относ тс к метиленовым протонам S - СН СН -NCf группы, атомов: S 3,52 М.Д.; 5 2,98 м.д., J 7 Гц. Соотношение интегральных интенсивностей сигналов от слабого пол к сильному 4:2:2:2.Found,%: N 5.24; S 12.37. CgH ,, NO, S Calculated,%: N 5.20; S 11.90. The process is carried out analogously to example 1, with the difference that when preparing MEATA, the reaction mass is stirred for 2-3 hours at 40-50 C. At the same time, 34 g of YuATA are obtained, which is 62.5% of theoretical calculation for chloroethylamine. Found,%: N 5/19; S 12.34. CgH NOfiS Calculated,%: N 5.20; S 11.90. Example 3. The process is carried out analogously to example t. When receiving YuATA, the reaction mass is stirred for 7-8 h at 40-50 ° C. At the same time, l-46 g of MEATA is obtained, which makes up 85.8% of the theoretical value, based on chloroethylamine. Found:%: N 5.28, S 12.46. HgO Calculated,%: N 5.20, S 11.90. Mercaptoethylamine triacetic acid was identified by PMR spectroscopy. Two singlet lines are observed in the PNR spectrum of MEATA, one of which is with S 3.84 ppm. relates to methylene ducts of iminodiacetate grouping, the second 8 3.35 ppm - to methylene protons of thioglycol group. Two triplets belong to the methylene protons of the S-CH CH -NCf group, the atoms: S 3,52 MD; 5 2.98 ppm, J = 7 Hz. The ratio of the integral intensities of the signals from the weaker to the strong is 4: 2: 2: 2.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843735243A SU1188166A1 (en) | 1984-04-29 | 1984-04-29 | Method of producing monohydrate of mercaptoethylamintriacetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843735243A SU1188166A1 (en) | 1984-04-29 | 1984-04-29 | Method of producing monohydrate of mercaptoethylamintriacetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1188166A1 true SU1188166A1 (en) | 1985-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU843735243A SU1188166A1 (en) | 1984-04-29 | 1984-04-29 | Method of producing monohydrate of mercaptoethylamintriacetic acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1188166A1 (en) |
-
1984
- 1984-04-29 SU SU843735243A patent/SU1188166A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Podlahova J., Mercaptoethylaminetriacetic Acid Part II, - Coll. CZ ch, chem. сошт., 1974, 39, 10, с. 2724-2732. * |
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