PL413157A1 - Method for obtaining 4-chlorophthalonitrile - Google Patents

Method for obtaining 4-chlorophthalonitrile

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Publication number
PL413157A1
PL413157A1 PL413157A PL41315715A PL413157A1 PL 413157 A1 PL413157 A1 PL 413157A1 PL 413157 A PL413157 A PL 413157A PL 41315715 A PL41315715 A PL 41315715A PL 413157 A1 PL413157 A1 PL 413157A1
Authority
PL
Poland
Prior art keywords
chlorophthalonitrile
chlorophthalamide
chlorophthalimide
obtaining
dehydration
Prior art date
Application number
PL413157A
Other languages
Polish (pl)
Other versions
PL227254B1 (en
Inventor
Zygmunt Boruszczak
Anna Marzec
Original Assignee
Politechnika Łódzka
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 Politechnika Łódzka filed Critical Politechnika Łódzka
Priority to PL413157A priority Critical patent/PL227254B1/en
Publication of PL413157A1 publication Critical patent/PL413157A1/en
Publication of PL227254B1 publication Critical patent/PL227254B1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Sposób otrzymywania 4-chloroftalonitrylu, polegający na otrzymaniu 4-chloroftalimidu, następnie poddaniu 4-chloroftalimidu amonolizie do 4-chloroftalamidu przy użyciu wody amoniakalnej i odwodnieniu 4-chloroftalamidu do 4-chloroftalonitrylu, z wykorzystaniem reakcji odwodnienia amidu do nitrylu za pomocą chlorku tionylu w środowisku N,N-dimetyloformamidu, charakteryzuje się tym, że 4-chloroftalimid otrzymuje się w reakcji imidowania soli monosodowej kwasu 4-chloroftalowego za pomocą mocznika w środowisku glikolu etylenowego, dietylenowego lub propylenowego, w obecności kwaśnego siarczanu sodu, kwasu p-toluenosulfonowego lub kwasu amidosulfonowego. Reakcję amonolizy 4-chloroftalimidu do 4-chloroftalamidu prowadzi się w 25% wodzie amoniakalnej z dodatkiem soli amonowej, jak chlorek, siarczan, azotan lub węglan, po czym 4-chloroftalamid odwadnia się do 4-chloroftalonitrylu działaniem chlorku tionylu w środowisku N,N-dimetyloformamidu.The method of obtaining 4-chlorophthalonitrile, which consists in obtaining 4-chlorophthalimide, then subjecting 4-chlorophthalimide to ammonolysis to 4-chlorophthalamide using ammonia water and dehydration of 4-chlorophthalamide to 4-chlorophthalonitrile, using the dehydration of amide to nitrile with thionyl chloride in the environment N, N-dimethylformamide is characterized in that 4-chlorophthalimide is obtained by imidating the monosodium salt of 4-chlorophthalic acid with the use of urea in an ethylene, diethylene or propylene glycol medium, in the presence of sodium sulfate, p-toluenesulfonic acid or sulfamic acid . The ammonolysis reaction of 4-chlorophthalimide to 4-chlorophthalamide is carried out in 25% ammonia water with the addition of an ammonium salt, such as chloride, sulfate, nitrate or carbonate, after which 4-chlorophthalamide is dehydrated to 4-chlorophthalonitrile by the action of thionyl chloride in an N, N- environment dimethylformamide.

PL413157A 2015-07-16 2015-07-16 Method for obtaining 4-chlorophthalonitrile PL227254B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL413157A PL227254B1 (en) 2015-07-16 2015-07-16 Method for obtaining 4-chlorophthalonitrile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL413157A PL227254B1 (en) 2015-07-16 2015-07-16 Method for obtaining 4-chlorophthalonitrile

Publications (2)

Publication Number Publication Date
PL413157A1 true PL413157A1 (en) 2017-01-30
PL227254B1 PL227254B1 (en) 2017-11-30

Family

ID=57867760

Family Applications (1)

Application Number Title Priority Date Filing Date
PL413157A PL227254B1 (en) 2015-07-16 2015-07-16 Method for obtaining 4-chlorophthalonitrile

Country Status (1)

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PL (1) PL227254B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110396055B (en) * 2019-08-31 2022-12-23 三门峡环宇生化科技有限公司 Method for directly synthesizing parachlorobenzonitrile from parachlorobenzoic acid and urea

Also Published As

Publication number Publication date
PL227254B1 (en) 2017-11-30

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