SU498298A1 - The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole - Google Patents

The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole

Info

Publication number
SU498298A1
SU498298A1 SU1992727A SU1992727A SU498298A1 SU 498298 A1 SU498298 A1 SU 498298A1 SU 1992727 A SU1992727 A SU 1992727A SU 1992727 A SU1992727 A SU 1992727A SU 498298 A1 SU498298 A1 SU 498298A1
Authority
SU
USSR - Soviet Union
Prior art keywords
amino
obtaining
benzimidazole
pamino
phenyl
Prior art date
Application number
SU1992727A
Other languages
Russian (ru)
Inventor
Илья Яковлевич Квитко
Людмила Ивановна Рудая
Галина Борисовна Салмина
Андрей Васильевич Ельцов
Original Assignee
Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им. Ленсовета
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 Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им. Ленсовета filed Critical Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им. Ленсовета
Priority to SU1992727A priority Critical patent/SU498298A1/en
Application granted granted Critical
Publication of SU498298A1 publication Critical patent/SU498298A1/en

Links

Landscapes

  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Description

Найдено, %: N 16,25; 16,18.Found,%: N 16.25; 16.18.

C,3Hi3N4-H20.H3P04.C, 3Hi3N4-H20.H3P04.

Вычислено, %: N 16,47.Calculated,%: N 16.47.

Полученный осадок суспендируют в 100 мл 1ВОДЫ, подщелачивают 25%-ным раствором аммиа.ка до рН 8,5-9, отфильтровывают 5 (6) -амино-2- (п-аминофенил) -бензЕМИдазол , промывают водой и сушат. Выход 13,2 г (90%), т. .пл. 230-23ГС (по литературным данным т. пл. 235-236° С). Фильтрат после отделени  фосфорнокислой соли целевого продукта перегон ют в вакууме. Отогнанный изопропилавый спирт используют дл  последующего выделени  целевого вродукта. Остаток фосфорной кислоты укрепл ют фосфорным ангидридом до получени  116%-ной полифосфорной кислоты и используют дл  проведени  реакции конденсации. Процесс может быть непрерывным.The precipitate obtained is suspended in 100 ml of WATOD, alkalized with 25% ammonia solution until pH 8.5–9, 5 (6) -amino-2- (p-aminophenyl) benzimidazole is filtered, washed with water and dried. Yield 13.2 g (90%), t. Pl. 230-23GS (according to literary data, t. Pl. 235-236 ° C). After separation of the phosphate salt of the target product, the filtrate is distilled under vacuum. Distilled isopropyl alcohol is used for the subsequent isolation of the desired product. The phosphoric acid residue is strengthened with phosphoric anhydride to obtain 116% polyphosphoric acid and used to carry out a condensation reaction. The process can be continuous.

Claims (1)

Формула изобретени Invention Formula Способ получени  5(6)-амйно-2-(п-аминофепил ) -бензимидааола, отличающийс  тем, что, € целъю увеличени  выхода целевого продукта и упрощени  технологии процесса , фосфорнокислую соль 1,2,4-триа.мино:бензола подвергают взаимодействию с п-а минобензойной кислотой.The method of obtaining 5 (6) -amino-2- (p-aminepepil) -benzimidaaol, characterized in that, in order to increase the yield of the target product and simplify the process, 1,2,4-tria.mino phosphate salt is reacted with pa-minobenzoic acid.
SU1992727A 1974-02-06 1974-02-06 The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole SU498298A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1992727A SU498298A1 (en) 1974-02-06 1974-02-06 The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1992727A SU498298A1 (en) 1974-02-06 1974-02-06 The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole

Publications (1)

Publication Number Publication Date
SU498298A1 true SU498298A1 (en) 1976-01-05

Family

ID=20574695

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1992727A SU498298A1 (en) 1974-02-06 1974-02-06 The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole

Country Status (1)

Country Link
SU (1) SU498298A1 (en)

Similar Documents

Publication Publication Date Title
SU452962A3 (en) Method for preparing phthalimido-1,3,5triazines
RO87040B (en) Process for the preparation de n-phosphonomethylglycine
SU498298A1 (en) The method of obtaining 5/6 / -amino-2- / pamino-phenyl / benzimidazole
SU513981A1 (en) The method of obtaining sulfonylamino-bismethylphosphonic acids
SU436057A1 (en) METHOD OF OBTAINING ISOPROPYLIDENE DERIVATIVES OF PYRIDOXYN IN PT5FONM mmim
SU530022A1 (en) Method for producing amino acid hydrazides
SU722903A1 (en) Method of preparing 1-amino-4-arylaminoanthraquinones
SU371229A1 (en) METHOD OF OBTAINING 1,8-NAF GULSTA-5,6-PHENASINE
SU405886A1 (en) METHOD OF OBTAINING SUBSTITUTED SALTS 2-BENZOPIRILIUM
SU362025A1 (en) ALL-UNION PDT? NTIGMGUK {| isg. {. <> &. ^ _ E ^ NBLIO''G1 <A i A.I. Razumov, P. A. Gurevich, R. L. Yafarova and L. A. MonakhovaM. Cl. From 07f 9 50UDK 547.341.07 (088.8)
US2567955A (en) Preparation of guanidine thiocyanate
SU374306A1 (en)
SU479770A1 (en) The method of obtaining-unsaturated ketones condensed imidazole systems
SU484219A1 (en) Method for preparing copper complexes of amino acid diimides
SU362857A1 (en) METHOD OF OBTAINING METACRYLOYLAMINO ANTRAKHINON DYE
SU376387A1 (en) METHOD FOR OBTAINING PHOSPHORYLATED DIPHENYLAMINES
SU437768A1 (en) The method of obtaining xanthine
SU299163A1 (en) Method of obtaining ammonium salts of b-alkoxyvinylpyrothiophosphonic acid amides
SU386946A1 (en) ;, OUTOUS
SU459068A1 (en) Method of obtaining benzoamidooxyacetic acids
SU1133273A1 (en) Process for preparing 3.(2-furyl)-acrylic anhydride
SU702006A1 (en) Method of preparing 4-nitrodiphenylamine-2-carboxylic acid derivatives
SU416343A1 (en) METHOD OF OBTAINING 1,2; 3.4; 5,6-TRIIZOPROPYLIDENGLUCONIC ACID
SU467075A1 (en) The method of obtaining 2,5-bis = (oxytetrafluorophenyl) -1,3,4-oxadiazole
SU459471A1 (en) The method of obtaining thyl (chloroethyl) phosphate