SU107270A1 - The method of obtaining alpha, beta-dihalogenated hydroxamic acids - Google Patents

The method of obtaining alpha, beta-dihalogenated hydroxamic acids

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Publication number
SU107270A1
SU107270A1 SU555844A SU555844A SU107270A1 SU 107270 A1 SU107270 A1 SU 107270A1 SU 555844 A SU555844 A SU 555844A SU 555844 A SU555844 A SU 555844A SU 107270 A1 SU107270 A1 SU 107270A1
Authority
SU
USSR - Soviet Union
Prior art keywords
dihalogenated
beta
hydroxamic acids
obtaining alpha
hydroxylamine
Prior art date
Application number
SU555844A
Other languages
Russian (ru)
Inventor
М.Я. Карпейский
Н.К. Кочетков
Р.М. Хомутов
Original Assignee
М.Я. Карпейский
Н.К. Кочетков
Р.М. Хомутов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by М.Я. Карпейский, Н.К. Кочетков, Р.М. Хомутов filed Critical М.Я. Карпейский
Priority to SU555844A priority Critical patent/SU107270A1/en
Application granted granted Critical
Publication of SU107270A1 publication Critical patent/SU107270A1/en

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Description

Изобретение относитс  к способу получени  у., ;1-дигалоидзауещенных гидроксамовы.х кислот из хлорангидридов соответственных дигалоидзамешенных карбоновых кислот и гидроксиламина -основани . Сущность изобретени  состоит в обработке хлорангидридов а, 3дигалоидзамеи1:енных карбоновых кислот гидроксиламина-основанием по известной реакции в водном растворе или в органическом растворителе при темнературе не BbiKie 15The invention relates to a method for producing a y.,; 1-dihalo-substituted hydroxamic acids from the acid chlorides of the corresponding dihalo-mixed carboxylic acids and hydroxylamine-base. The essence of the invention consists in treating the acid chlorides a, 3-dihalogen-zamei1: enriched carboxylic acids with hydroxylamine-base by a known reaction in an aqueous solution or in an organic solvent with non-BbiKie 15 temperature.

Предложевны способ значительно упрощает синтез названного продукта и дает возможность избежать необходимость выделени  гидроксиламина-основани .The proposed method greatly simplifies the synthesis of the named product and makes it possible to avoid the need to isolate the hydroxylamine base.

Пример . Получение «, 3 -дибромпропионгидроксамовой кислоты .An example. Receiving, 3-dibromopropylhydroxamic acid.

К раствору 50 г (0,2 мол ) хлорангидрида у., -В -дибромпропионовон кислоты в 150 мл сухого бензола при охлаждении лед ной водой и энергичном перемешивании в течение 30 минут прибавл ют 16,5 г (0,5 мол ) гидроксиламина -основани  и перемешивают реакционную массу 5 часов.To a solution of 50 g (0.2 mol) of acid chloride u., -B-dibromopropionic acid in 150 ml of dry benzene, while cooling with ice water and vigorous stirring, add 30.5 g (0.5 mol) of hydroxylamine for 30 minutes. base and mix the reaction mass for 5 hours.

Затем следуют определение осадка , сушка и очистка. Выход 25- 30 г (50-СО-/,, теоретического). После перекристаллизации из воды т. пл. -151- 152.This is followed by sludge determination, drying and cleaning. Yield 25-30 g (50-CO- / ,, theoretical). After recrystallization from water so pl. -151-152.

При М е р 9. Получение а, 3-дибромпропионгидроксамовой кислоты в водном растворе.When M er 9. Obtaining a, 3-dibromopropylhydroxamic acid in aqueous solution.

К 50 2 (0,2 мол ) хлораигидрида У-, 3-дибромпрописновой кислоты при т. 0-5- по капл м прибавл ют раствор гидроксиламина, приготовлен ГЫ1 из 28 г (0,4 .мол ) сол нокислого гидроксиламина и 16 г (0,4 мол ) едкого натра в 50 мл воды.To a 50 2 (0.2 mol) chlorohydride of U-, 3-dibromopropisonic acid at m. 0-5, a solution of hydroxylamine is added dropwise, a GY1 is prepared from 28 g (0.4 mol) hydroxylamine hydrochloride and 16 g (0.4 mole) caustic soda in 50 ml of water.

По окончании прибавлени  смесь перемешиваетс  один час при т. 0 - 5 и один час при 5 Затем следует выделение продукта реакции , согласно вышеуказанному.At the end of the addition, the mixture is stirred for one hour at m. 0-5 and for one hour at 5. Then the product is isolated according to the above.

Предмет изобретени Subject invention

Способ получени  У-, 3-дигалоидзаме1цемных гидроксамовы.х кислот из хлорангидридов соответственных дигалоидзамегценных карбонозых кислот и гидроксила.мина основани , о т л и ч а ю гп, и и с  тем, что, с целью упрощени  иThe method of obtaining the U-, 3-dihaloacetic acetic hydroxamic acids from the acid chlorides of the corresponding dihalo substituted carboxylic acids and hydroxyl.mino bases, that is, and with the aim of simplifying and

№ 107270-- 2 сокращени  длительности процес-основанием по известной реакцииNo. 107270-- 2 shortening the duration of the process base by a known reaction

са получени  конечных продук-ведут в водном растворе или вFor the preparation of final products, lead in aqueous solution or in

тов, обработку хлорангидридоворганическом растворителе при,tov, processing of an acid chloride with an organic solvent,

 , р-дигалоидзамещенных кар5о-температуре не выше 15. новых кислот гидроксиламином-, p-dihalogenated substituted karo-temperature not higher than 15. new acids hydroxylamine-

SU555844A 1956-08-04 1956-08-04 The method of obtaining alpha, beta-dihalogenated hydroxamic acids SU107270A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU555844A SU107270A1 (en) 1956-08-04 1956-08-04 The method of obtaining alpha, beta-dihalogenated hydroxamic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU555844A SU107270A1 (en) 1956-08-04 1956-08-04 The method of obtaining alpha, beta-dihalogenated hydroxamic acids

Publications (1)

Publication Number Publication Date
SU107270A1 true SU107270A1 (en) 1956-11-30

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Country Status (1)

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SU (1) SU107270A1 (en)

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