RO86163B1 - Procedeu de ob'inere a 4-butil-1, 2-difenil-3, 5-pirazolidindionei pure - Google Patents

Procedeu de ob'inere a 4-butil-1, 2-difenil-3, 5-pirazolidindionei pure

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Publication number
RO86163B1
RO86163B1 RO109975A RO10997583A RO86163B1 RO 86163 B1 RO86163 B1 RO 86163B1 RO 109975 A RO109975 A RO 109975A RO 10997583 A RO10997583 A RO 10997583A RO 86163 B1 RO86163 B1 RO 86163B1
Authority
RO
Romania
Prior art keywords
ethanol
solution
pyrazolidindione
diphenyl
butyl
Prior art date
Application number
RO109975A
Other languages
English (en)
Other versions
RO86163A2 (ro
Inventor
Romana Radu
Veronica Badea
Nina Uricaru
Mariana-Simina Ionescu
Petruta Popovici
Lucian-Sergiu Harles
Mariana Ionescu
Original Assignee
Institutul De Cercetari Chimico-Farmaceutice
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 Institutul De Cercetari Chimico-Farmaceutice filed Critical Institutul De Cercetari Chimico-Farmaceutice
Priority to RO109975A priority Critical patent/RO86163B1/ro
Publication of RO86163A2 publication Critical patent/RO86163A2/ro
Publication of RO86163B1 publication Critical patent/RO86163B1/ro

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Abstract

Inventia se refera la un procedeu de obtinere a fenilbutazonei, an care fenilbutazona bruta (uscata sau umeda )se trateaza la cald(70 degree C) cu amoniac apos în mediu de etanol sau etanol-apa dupa care se raceste la + 5 degree C produsul cristalizat se filtreaza se dizolva în solutie apoasa diluata de NaOH iar dupa decolorarea cu carbune se precipita fenilbutazona pura prin adaugarea solutiei etanolica de acid CHCl acid acetic raportul volimetric între etanol folosit în precipitare si solutie de NaOH folosita la dizolvare fiind cuprinsa între 2 pana la 1 : 1.
RO109975A 1983-02-11 1983-02-11 Procedeu de ob'inere a 4-butil-1, 2-difenil-3, 5-pirazolidindionei pure RO86163B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO109975A RO86163B1 (ro) 1983-02-11 1983-02-11 Procedeu de ob'inere a 4-butil-1, 2-difenil-3, 5-pirazolidindionei pure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO109975A RO86163B1 (ro) 1983-02-11 1983-02-11 Procedeu de ob'inere a 4-butil-1, 2-difenil-3, 5-pirazolidindionei pure

Publications (2)

Publication Number Publication Date
RO86163A2 RO86163A2 (ro) 1985-02-25
RO86163B1 true RO86163B1 (ro) 1985-03-01

Family

ID=20112669

Family Applications (1)

Application Number Title Priority Date Filing Date
RO109975A RO86163B1 (ro) 1983-02-11 1983-02-11 Procedeu de ob'inere a 4-butil-1, 2-difenil-3, 5-pirazolidindionei pure

Country Status (1)

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RO (1) RO86163B1 (ro)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105601569A (zh) * 2016-02-02 2016-05-25 精华制药集团南通有限公司 一种从保泰松精品母液废渣中回收保泰松的方法
CN108276338B (zh) * 2018-01-22 2020-05-08 精华制药集团南通有限公司 一种制备保泰松的绿色方法

Also Published As

Publication number Publication date
RO86163A2 (ro) 1985-02-25

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