SU449031A1 - Method for preparing phenanthrene-4-aldehyde-5-carboxylic acid - Google Patents

Method for preparing phenanthrene-4-aldehyde-5-carboxylic acid

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Publication number
SU449031A1
SU449031A1 SU1801605A SU1801605A SU449031A1 SU 449031 A1 SU449031 A1 SU 449031A1 SU 1801605 A SU1801605 A SU 1801605A SU 1801605 A SU1801605 A SU 1801605A SU 449031 A1 SU449031 A1 SU 449031A1
Authority
SU
USSR - Soviet Union
Prior art keywords
aldehyde
carboxylic acid
preparing
acid
phenanthrene
Prior art date
Application number
SU1801605A
Other languages
Russian (ru)
Inventor
Виктор Гаврилович Симиков
Владимир Леонидович Плакидин
Петр Прохорович Карпухин
Виктор Александрович Якоби
Original Assignee
Предприятие П/Я М-5400
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 Предприятие П/Я М-5400 filed Critical Предприятие П/Я М-5400
Priority to SU1801605A priority Critical patent/SU449031A1/en
Application granted granted Critical
Publication of SU449031A1 publication Critical patent/SU449031A1/en

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Description

1one

Изобретение относитс  к усовершенствованию способа получени  фенантреи-4-альдегнд5-карбоиовой кислоты, котора   вл етс  цениым полупродуктом в сннтезе красителей.This invention relates to an improvement in the process for the preparation of phenanthrea-4-aldegnd5-carboxylic acid, which is a valuable intermediate in the withdrawal of dyes.

Известен способ получени  фенаитрен-4-альдегид-5-карбоиовой кислоты окислением пнрена озоном в среде лед ной уксусной кислоты с последуюпдим доокислением гнпохлоритом . Выход целевого продукта со значительной примесью днфеновой кислоты 32%.A known method for the preparation of phenaitrene-4-aldehyde-5-carboxylic acid by the oxidation of pyrene with ozone in glacial acetic acid followed by further oxidation with gnpochlorite. The yield of the target product with a significant admixture of dfenoic acid 32%.

С пелью повышени  выхода и степени чистоты целевого продукта предложено в качестве окислител  исиользовать бихромат кали  или патри  и иропесс вести в водной среде при 200 -300°С в течение не более 12 час.With a view to increasing the yield and purity of the target product, it has been proposed to use potassium dichromate or patriot and irocessum as an oxidizing agent in an aqueous medium at 200 -300 ° C for no more than 12 hours.

Это нозвол ет получить практически количественный выход целевой кислоты.This allows one to obtain an almost quantitative yield of the target acid.

Иример 1. В автоклав емкостью 1 л загружают 800 мл воды, 20 г нирена (или пнреиовой фракции) и 200 г бихромата патри  или калн , зате.м его герметизируют и нагревают до 200°С в течеиие 1 час, после чего выдерживают прп этой температуре 2-12 час. Далее реакционную массу охлаждают и фильтруют. Из фильтрата обработ1 ой сол ной кислотой выдел ют целевую кислоту, осадок которой отфильтровывают и сушат. Выход целево1О продукта количествеппый; т. пл. 272°С.Irimer 1. Into an autoclave with a capacity of 1 l, 800 ml of water, 20 g of niren (or a fresh fraction) and 200 g of dichromate patri or kaln are loaded, then it is sealed and heated to 200 ° C for 1 hour, after which it is kept temperature 2-12 hours. Next, the reaction mass is cooled and filtered. From the filtrate with hydrochloric acid, the target acid is recovered, the precipitate of which is filtered off and dried. The yield of the target product is about quantity; m.p. 272 ° C.

Пример 2. Процесс ведут по примеру 1, ио в реактор загру  ают еще 5 г двуокиси марганца и процесс ведут при 300°С. Выход количественный (за 12 час).Example 2. The process is carried out according to Example 1, and another 5 g of manganese dioxide is loaded into the reactor and the process is carried out at 300 ° C. Output quantitative (for 12 hours).

Предмет и з о б р е т е н и  Subject and title

Снособ получени  фенантреп-4-альдегид-5карбоновой кислоты окислением ппрена с последуюшим выделением целевого про.туктаMethod for preparing phenanthrep-4-aldehyde-5carboxylic acid by oxidation of pprene followed by isolation of the target product

известными приемами, отличающийс known techniques differing

тем, что, с целью новышенн  выхода и степеии чистоты целевого продукта, в качествеthe fact that, with the aim of novyshn exit and degree of purity of the target product, as

окислител  используют бихро гат кали  илиan oxidizing agent using potassium bichromate or

натри  и процесс ведут в водиой среде нрпsodium and process lead to water

200-300°С.200-300 ° C.

SU1801605A 1972-06-26 1972-06-26 Method for preparing phenanthrene-4-aldehyde-5-carboxylic acid SU449031A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1801605A SU449031A1 (en) 1972-06-26 1972-06-26 Method for preparing phenanthrene-4-aldehyde-5-carboxylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1801605A SU449031A1 (en) 1972-06-26 1972-06-26 Method for preparing phenanthrene-4-aldehyde-5-carboxylic acid

Publications (1)

Publication Number Publication Date
SU449031A1 true SU449031A1 (en) 1974-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1801605A SU449031A1 (en) 1972-06-26 1972-06-26 Method for preparing phenanthrene-4-aldehyde-5-carboxylic acid

Country Status (1)

Country Link
SU (1) SU449031A1 (en)

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