SU670212A3 - Method of producing dl-amino-1-butanol hydrochloride - Google Patents

Method of producing dl-amino-1-butanol hydrochloride

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Publication number
SU670212A3
SU670212A3 SU762325956A SU2325956A SU670212A3 SU 670212 A3 SU670212 A3 SU 670212A3 SU 762325956 A SU762325956 A SU 762325956A SU 2325956 A SU2325956 A SU 2325956A SU 670212 A3 SU670212 A3 SU 670212A3
Authority
SU
USSR - Soviet Union
Prior art keywords
water
amino
mixture
reaction
butanol
Prior art date
Application number
SU762325956A
Other languages
Russian (ru)
Inventor
Сингх Болвонт
Original Assignee
Американ Цианамид Компани, (Фирма)
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 Американ Цианамид Компани, (Фирма) filed Critical Американ Цианамид Компани, (Фирма)
Priority to SU762325956A priority Critical patent/SU670212A3/en
Application granted granted Critical
Publication of SU670212A3 publication Critical patent/SU670212A3/en

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Claims (2)

(54) СПОСОБ ПОЛУЧЕНИЯ ХЛОРГИДРАТА ВЬ-2-АМИНО-1-БУТАНОЛА 3 прерыв-но с линейной скоростью с помощью шприца по ходу реакции (1 ч). Температуру реакции повышают до 20°С в течение 8 мин и поддерживают посто нной в течение реакции. Реакционную смесь перемешивают еще 1530 мин. Избыток ацетонитрила (т. ки 36-410С 150-170 мм рт, cTj удалшот пе регонкой (температура бани до использу  при этом 10-тарельчатую к лонку дл  перегонки. Температуру нагрева повышают до и побочный продукт -1,2-дихлорбутан отгон ют при 70-40 0 и давлении от 150 до 25 мм рт. ст. Остаток в колбе, N- 1-хлорметил пропил ацетамид, смешивают с 45 г (2,5 моль) воды и смесь довод т до кипени  с обратным холодильником Остаточный 1,2-дихлорбутан удал ют азеотропной перегонкой (ловушка Дина-Старка ) во врем  кип чени  смеси с обратным холодильником в течение 2 ч. Воду и некоторое количество уксусной кислоты, образующейс  во врем  гидролиза с водой,удал ют при 80°С (при пониженном давлении 15 20 мм рт. ст.) дл  получени  в зкого остатка, состо щего из N-(1-хлор2 метил)пропил ацетамида и продуктов его гидролиза. К остатку прибавл ют 48 г (1,5 моль) метанола и 0,5 концентрированной сол ной кислоты и реакционную смесь кип т т с обратным холодильником в течение 2 ч. После удалени  легколетучих продуктов (вода,метилацетат и т.д.) получают хлоридрат ОЬ-2-амино-1-бутанола (50 г) в виде бесцветного в зкого вещества,которое кристаллизуетс  при сто нии. Формула изобретени  Способ получени  хлоргидратаВ1г2-амино-1-бутанола , отличающийс  тем, что, с целью упрощени  процесса, (хлорметил)пропил ацетамид подвергают гидролизу в смеси воды и низшего спирта и отгон ют образующийс  при зтом алкилацетат. Источники информации. Прин тые во внимание при экспертизе 1. Патент СШЙ № 355325,7, кл. 260-580, 1970. (54) METHOD FOR OBTAINING CHB-2-AMINO-1-BUTANOL 3 CHLOROHYDRATE intermittently at a linear rate using a syringe in the course of the reaction (1 h). The reaction temperature is raised to 20 ° C over a period of 8 minutes and kept constant during the reaction. The reaction mixture is stirred for another 1530 minutes. Excess acetonitrile (t. 36-410C 150-170 mm Hg, cTj was removed by distillation (the bath temperature was used before using a 10-tray distillation tank. The heating temperature was increased to and the byproduct -1,2-dichlorobutane was distilled off 70-40 0 and pressure from 150 to 25 mm of mercury. The residue in the flask, N-1-chloromethyl propyl acetamide, is mixed with 45 g (2.5 mol) of water and the mixture is brought to a reflux. Residual 1, The 2-dichlorobutane is removed by azeotropic distillation (Dean-Stark trap) while the mixture is refluxed for 2 hours. Water and some the amount of acetic acid formed during hydrolysis with water is removed at 80 ° C (under a reduced pressure of 15–20 mm Hg) to obtain a viscous residue consisting of N- (1-chloro-2 methyl) propyl acetamide and products its hydrolysis. 48 g (1.5 mol) of methanol and 0.5 of concentrated hydrochloric acid are added to the residue and the reaction mixture is heated under reflux for 2 hours. After removing volatile products (water, methyl acetate, etc. .) Obtain OH-2-amino-1-butanol chloride (50 g) as a colorless viscous substance, which crystallizes TC when standing. DETAILED DESCRIPTION OF THE INVENTION A process for the preparation of B1 2-amino-1-butanol hydrochloride, characterized in that, in order to simplify the process, (chloromethyl) propyl acetamide is subjected to hydrolysis in a mixture of water and a lower alcohol and the alkyl acetate formed with this is distilled. Information sources. Taken into account during the examination 1. US patent number 355325, 7, cl. 260-580, 1970. 2.. Патент Великобритании № 1421489, кл. С 07 С, 1973.2 .. Patent of Great Britain No. 1421489, cl. From 07 C, 1973.
SU762325956A 1976-02-23 1976-02-23 Method of producing dl-amino-1-butanol hydrochloride SU670212A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762325956A SU670212A3 (en) 1976-02-23 1976-02-23 Method of producing dl-amino-1-butanol hydrochloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762325956A SU670212A3 (en) 1976-02-23 1976-02-23 Method of producing dl-amino-1-butanol hydrochloride

Publications (1)

Publication Number Publication Date
SU670212A3 true SU670212A3 (en) 1979-06-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762325956A SU670212A3 (en) 1976-02-23 1976-02-23 Method of producing dl-amino-1-butanol hydrochloride

Country Status (1)

Country Link
SU (1) SU670212A3 (en)

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