SU122152A1 - Method of obtaining 2.3.5-trimethylhydroquinone - Google Patents

Method of obtaining 2.3.5-trimethylhydroquinone

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Publication number
SU122152A1
SU122152A1 SU614300A SU614300A SU122152A1 SU 122152 A1 SU122152 A1 SU 122152A1 SU 614300 A SU614300 A SU 614300A SU 614300 A SU614300 A SU 614300A SU 122152 A1 SU122152 A1 SU 122152A1
Authority
SU
USSR - Soviet Union
Prior art keywords
trimethylhydroquinone
solution
obtaining
sulfuric acid
sodium bisulfite
Prior art date
Application number
SU614300A
Other languages
Russian (ru)
Inventor
М.Я. Крафт
А.М. Цыганова
Original Assignee
М.Я. Крафт
А.М. Цыганова
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. Крафт, А.М. Цыганова filed Critical М.Я. Крафт
Priority to SU614300A priority Critical patent/SU122152A1/en
Application granted granted Critical
Publication of SU122152A1 publication Critical patent/SU122152A1/en

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Description

Известен способ получени  2, 3, 5-триметилгидрохинона. Дл  упрощени  синтеза предлагаетс  раствор ть мезитилгидроксиламин в разбавленной серной кислоте с последующей нейтрализацией раствора кальцинированной содой и добавлением раствора едкого натра и бисульфита натри  с последующим выделением 2, 3, 5-триметилгидрохинона из щелочного раствора известными приемами.A known method for producing 2, 3, 5-trimethylhydroquinone. To simplify the synthesis, it is proposed to dissolve mesityl hydroxylamine in dilute sulfuric acid, followed by neutralization of the solution with soda ash and addition of sodium hydroxide solution and sodium bisulfite, followed by separation of 2, 3, 5-trimethylhydroquinone from the alkaline solution using known techniques.

Пример. 280 мл 9%-ной серной кислоты охлаждают до О-4°. При этой температуре, помещива , постепенно в течение 25 мин присыпают 11 г мезитилгидроксиламина. Раствор перемещивают в течение 2 час, затем нейтрализуют сухой кальцинированной содой до нейтральной реакции на лакмус, добавл ют 1 г активированного угл  (марки Б), перемещивают при комнатной температуре 15-20 мин и фильтруют .Example. 280 ml of 9% sulfuric acid are cooled to O-4 °. At this temperature, placing, gradually for 25 minutes, pour 11 g of mesityl hydroxylamine. The solution is moved for 2 hours, then neutralized with dry soda ash until neutral to litmus, 1 g of activated carbon (grade B) is added, moved at room temperature for 15-20 minutes and filtered.

К полученному фильтрату прибавл ют 50 г вазелинового масла, затем концентрированный раствор едкого натра (14,2 г) .и 2 мл 40%-ного раствора бисульфита натри  и нагревают полученный раствор 1,5 час при 90-95°. Затем реакционную смесь охлах дают до комнатной температуры и нижний водный слой сливают в 700 мл 40%-ной серной кислоты, к которой добавл ют 2 мл 40%-ного раствора бисульфита натри . Выпавший 2, 3, 5-триметилгидрохинон, слегка окрашенный в кремовый цвет, отфильтровывают, промывают водой и сушат при 50° Выход 6 г,50 g of vaseline oil, then a concentrated solution of sodium hydroxide (14.2 g) and 2 ml of 40% sodium bisulfite solution are added to the obtained filtrate and the resulting solution is heated for 1.5 hours at 90-95 °. The reaction mixture was then allowed to cool to room temperature and the lower aqueous layer was poured into 700 ml of 40% sulfuric acid, to which 2 ml of 40% sodium bisulfite solution was added. 2, 3, 5-trimethylhydroquinone, slightly cream colored, is filtered off, washed with water and dried at 50 °. The yield is 6 g,

Предмет изобретени Subject invention

Способ получени  2, 3, 5-триметилгидрохинона, отличающийс  тем, что, с целью упрощени  синтеза, мезитилгидроксиламин раствор ют в разбавленной серной кислоте, нейтрализуют кальцинированной содой и нагревают с концентрированным раствором едкого натра в присугствии бисульфита натри  с дальнейшим выделением 2, 3, 5-триметилгидрохинона известными приемами.A process for preparing 2, 3, 5-trimethylhydroquinone, characterized in that, in order to simplify the synthesis, mesityl hydroxylamine is dissolved in dilute sulfuric acid, neutralized with soda ash and heated with a concentrated sodium hydroxide solution in the presence of sodium bisulfite with a further release of 2, 3, 5 -trimethylhydroquinone known methods.

SU614300A 1958-12-19 1958-12-19 Method of obtaining 2.3.5-trimethylhydroquinone SU122152A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU614300A SU122152A1 (en) 1958-12-19 1958-12-19 Method of obtaining 2.3.5-trimethylhydroquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU614300A SU122152A1 (en) 1958-12-19 1958-12-19 Method of obtaining 2.3.5-trimethylhydroquinone

Publications (1)

Publication Number Publication Date
SU122152A1 true SU122152A1 (en) 1959-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU614300A SU122152A1 (en) 1958-12-19 1958-12-19 Method of obtaining 2.3.5-trimethylhydroquinone

Country Status (1)

Country Link
SU (1) SU122152A1 (en)

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