RO93532B1 - Procedeu de obtinere a unor derivati de uree tetrasubstituiti - Google Patents

Procedeu de obtinere a unor derivati de uree tetrasubstituiti

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Publication number
RO93532B1
RO93532B1 RO121960A RO12196086A RO93532B1 RO 93532 B1 RO93532 B1 RO 93532B1 RO 121960 A RO121960 A RO 121960A RO 12196086 A RO12196086 A RO 12196086A RO 93532 B1 RO93532 B1 RO 93532B1
Authority
RO
Romania
Prior art keywords
urea derivatives
tetrasubstituted urea
dosing
sodium hydroxide
hydroxide solution
Prior art date
Application number
RO121960A
Other languages
English (en)
Other versions
RO93532A2 (ro
Inventor
Florentina Georgescu
Emilian Georgescu
Stefan Curcaneanu
Gabriel Dragan
Corneliu Todereanu
Alexandru Szakacs
Original Assignee
Centrul De Cercetari
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 Centrul De Cercetari filed Critical Centrul De Cercetari
Priority to RO121960A priority Critical patent/RO93532B1/ro
Publication of RO93532A2 publication Critical patent/RO93532A2/ro
Publication of RO93532B1 publication Critical patent/RO93532B1/ro

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

Abstract

Ineventia se refera la un procedeu îmbunatatit de obtinere a unor derivati de uree tetrasubstituiti în special, N,N'-dialchil-N,N'-diarilureelor prin fosgenarea unui exces molar dublu de N-alchilanilina în prezenta unei solutii apoase de hidroid de sodiu, la temperaturi între 0-35 degree C, dozarea fosgenului si a solutiei apoase de hidroxid de sodiu facîndu-se concomitent si încalzirea amestecului de reactie rezultat la 60-80 degree C, timp în care pH-ul se mentine la 8-10 prin dozare de solutie apoasa de hidroxid de sodiu.
RO121960A 1986-01-23 1986-01-23 Procedeu de obtinere a unor derivati de uree tetrasubstituiti RO93532B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO121960A RO93532B1 (ro) 1986-01-23 1986-01-23 Procedeu de obtinere a unor derivati de uree tetrasubstituiti

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO121960A RO93532B1 (ro) 1986-01-23 1986-01-23 Procedeu de obtinere a unor derivati de uree tetrasubstituiti

Publications (2)

Publication Number Publication Date
RO93532A2 RO93532A2 (ro) 1987-12-31
RO93532B1 true RO93532B1 (ro) 1988-01-01

Family

ID=20118896

Family Applications (1)

Application Number Title Priority Date Filing Date
RO121960A RO93532B1 (ro) 1986-01-23 1986-01-23 Procedeu de obtinere a unor derivati de uree tetrasubstituiti

Country Status (1)

Country Link
RO (1) RO93532B1 (ro)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102659636B (zh) * 2012-04-10 2014-03-05 重庆长风化学工业有限公司 Ii号中定剂无碱生产工艺

Also Published As

Publication number Publication date
RO93532A2 (ro) 1987-12-31

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