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SU99767A1 - The method of producing tetridine - Google Patents

The method of producing tetridine

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Publication number
SU99767A1
SU99767A1 SU449091A SU449091A SU99767A1 SU 99767 A1 SU99767 A1 SU 99767A1 SU 449091 A SU449091 A SU 449091A SU 449091 A SU449091 A SU 449091A SU 99767 A1 SU99767 A1 SU 99767A1
Authority
SU
USSR - Soviet Union
Prior art keywords
tetridine
ester
producing
ether
sodium
Prior art date
Application number
SU449091A
Other languages
Russian (ru)
Inventor
С.Г. Барашков
Л.И. Денисова
Е.К. Москалик
Original Assignee
С.Г. Барашков
Л.И. Денисова
Е.К. Москалик
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 С.Г. Барашков, Л.И. Денисова, Е.К. Москалик filed Critical С.Г. Барашков
Priority to SU449091A priority Critical patent/SU99767A1/en
Application granted granted Critical
Publication of SU99767A1 publication Critical patent/SU99767A1/en

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Description

Известно получение тет.ридина лутем кил чени  аминометилендиэтилацетоуксусного эфира со спиртовой или водноспиртовой щелочью. При этом получают натриевое производное тетридина, из кото рогоз а тем выдел ют кислотой техНический тетридин .It is known to obtain tet.ridine with a kilo of aminomethylethylethyl ether acetic ester with an alcohol or hydroalcoholic alkali. In this case, a sodium derivative of tetridine is obtained, from which horn and, thus, an acid technical tetridine is isolated.

Предлагаемый способ позвол ет упростить получение тетридииа. Это достигаетс  тем, что ЦИКЛИЗАЦИЮ аминометилендизтилацетоуксуоного эфира осуществл ют вакуумиой перегонкой в присутствии следов натриевой щелочи.The proposed method allows to simplify the production of tetridium. This is achieved by the fact that the CYCLIZATION of aminomethylene di-ethyl aceto-acetone ester is carried out by vacuum distillation in the presence of traces of sodium alkali.

Пример 1. Технический амииометиле диэтилацетоуксусный эфир, полученный действием хлористого аммони  на водный раствор натриевого производного оксиметилендиэтиладетоуксусното эфира прИнагре, ва ии до температуры 80°, отдел етс  в делительной воронке от водного раствора (последний имеет сильно щелочную реакцию). Водный раствор промывают эфиром, равным по весу количеству аминометилендиэтилацетоуксусного эфира, и прибавл ют эфирную выт жку к основной массе амино метилендиэг-илацетоуксусного эфира.Example 1. Technical ammonium diethyl acetoacetic ester, obtained by the action of ammonium chloride on an aqueous solution of the sodium derivative of hydroxymethyl diethyl acetone ester extract, is heated to 80 ° C in the separating funnel from the aqueous solution (the latter is strongly alkaline). The aqueous solution is washed with ether, equal in weight to the amount of aminomethylenethylacetate acetic ether, and the ether extract is added to the bulk of the amino methylenediene-ethyl acetone acetic ether.

rioc.ie сушки эфирного раствора над прокаленным сульфатом натри  из раствора отгон ют эфир, а затем остаток разгон ют в вакууме. При этом амивометилендиэтилацетоуксус. ный эфир превращаегс  в тетридин при температуре 157-177° при 2-4 мм остаточного давлени . Получают технический тетридин с выходом около 70% от теории, счита  на технический аминометилендиэтила-цетоуксусный эфир.rioc.ie drying the ethereal solution over calcined sodium sulphate, the ether is distilled off from the solution, and then the residue is distilled in vacuo. At the same time, amivomethylenediethylacetoace. The ester was converted to tetridine at a temperature of 157-177 ° C at 2-4 mm residual pressure. Technical tetridine is obtained with a yield of about 70% of theory, based on technical aminomethylenediethyl-cetoacetic ester.

Пример 2. 90 г предварительно перегнанного а минометилендиэтил. ацетоуксусного эфира с температурой кипени  148-155° при 3-4 мм оста, точного давлени  помещают в колб) Клайзена и к нему прибавл ют 0,5-0,9 г сухого едкого натра. Создают вакуум в 5-20 мм остаточного давлени  и ностепенно нагревают колбу горелкой, но не дают амину отгон тьс ; при этом вь дел ютс  белые л ары.Example 2. 90 g of pre-distilled and minomethylene diethyl. acetoacetic ester with a boiling point of 148-155 ° at 3-4 mm of residual, the exact pressure is placed in Claisen flasks and 0.5-0.9 g of dry sodium hydroxide is added to it. A vacuum of 5-20 mm of residual pressure is created and the flask is heated by a burner, but does not allow the amine to be distilled off; in this case, white lars are made.

После часового нагревани  начинаетс  перегонка продукта циклизации - тетридина. Выход тетридина составл ет не ниже 80% от теории, счита  на вз тый в перегонку аминометиленлиэтилацетоуксусный эфир.After one hour of heating, distillation of the cyclization product, tetridine, begins. The yield of tetridine is no less than 80% of theory, based on the aminomethyl ethyl ethyl acetoacetate taken in the distillation.

№ 99767- 2 -No. 99767-2 -

Предмет изобретени щийс  тем, что, с целью удроще ни  процесса, циклизацию ами омеСпосоо получени  тетриди«а путемтилендиэтилацетоуксусного эфираThe subject matter of the invention is that, in order to broaden the process, the cyclization of amyme isomers of the preparation of tetridium a by ethylened diethyl acetoacetic ester

циклизации амииометилендиэтил-осупдествл ют перегонкой в присутацетоуксусного эфира, отличаю-ствии следов натриевой щелочи.cyclization of ammoniamethylenediethyl-deacidification by distillation in the presence of acetoacetic ester, distinguishing traces of sodium alkali.

SU449091A 1954-03-04 1954-03-04 The method of producing tetridine SU99767A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU449091A SU99767A1 (en) 1954-03-04 1954-03-04 The method of producing tetridine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU449091A SU99767A1 (en) 1954-03-04 1954-03-04 The method of producing tetridine

Publications (1)

Publication Number Publication Date
SU99767A1 true SU99767A1 (en) 1954-11-30

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SU449091A SU99767A1 (en) 1954-03-04 1954-03-04 The method of producing tetridine

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SU (1) SU99767A1 (en)

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