ZA905767B - Process for the preparation of asymmetrically substituted ureas - Google Patents
Process for the preparation of asymmetrically substituted ureasInfo
- Publication number
- ZA905767B ZA905767B ZA905767A ZA905767A ZA905767B ZA 905767 B ZA905767 B ZA 905767B ZA 905767 A ZA905767 A ZA 905767A ZA 905767 A ZA905767 A ZA 905767A ZA 905767 B ZA905767 B ZA 905767B
- Authority
- ZA
- South Africa
- Prior art keywords
- mixt
- pref
- amine
- gaseous
- preparation
- Prior art date
Links
- 235000013877 carbamide Nutrition 0.000 title abstract 2
- 150000003672 ureas Chemical class 0.000 title abstract 2
- 150000001412 amines Chemical class 0.000 abstract 3
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 abstract 2
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000003701 inert diluent Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
- C07C273/1809—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas with formation of the N-C(O)-N moiety
- C07C273/1818—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas with formation of the N-C(O)-N moiety from -N=C=O and XNR'R"
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT183089 | 1989-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA905767B true ZA905767B (en) | 1991-05-29 |
Family
ID=3521912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA905767A ZA905767B (en) | 1989-07-28 | 1990-07-23 | Process for the preparation of asymmetrically substituted ureas |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US5043444A (cs) |
| EP (1) | EP0410168B1 (cs) |
| JP (1) | JPH0366657A (cs) |
| KR (1) | KR910002784A (cs) |
| AT (1) | ATE115555T1 (cs) |
| AU (1) | AU629375B2 (cs) |
| CZ (1) | CZ280733B6 (cs) |
| DE (1) | DE59007989D1 (cs) |
| ES (1) | ES2066049T3 (cs) |
| HU (1) | HU208305B (cs) |
| NZ (1) | NZ234483A (cs) |
| RU (1) | RU1838295C (cs) |
| UA (1) | UA19040A (cs) |
| YU (1) | YU146790A (cs) |
| ZA (1) | ZA905767B (cs) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE115556T1 (de) * | 1989-07-28 | 1994-12-15 | Chemie Linz Gmbh | Verfahren zur herstellung unsymmetrisch substituierter harnstoffe, carbamate, thiocarbamate und substituierter isocyanate. |
| AT397384B (de) * | 1991-08-16 | 1994-03-25 | Chemie Linz Gmbh | Verfahren zur herstellung reiner n,n'-unsymmetrisch substituierter phenylharnstoffe |
| DE4127562A1 (de) * | 1991-08-21 | 1993-02-25 | Chemie Linz Deutschland | Verfahren zur herstellung n-mono- oder n,n-disubstituierter harnstoffe |
| AT398749B (de) * | 1992-08-13 | 1995-01-25 | Chemie Linz Gmbh | Verfahren zur herstellung von isocyansäure durch zersetzen von n,n-disubstituierten harnstoffen |
| AT400559B (de) | 1993-09-09 | 1996-01-25 | Chemie Linz Gmbh | Verfahren zur herstellung von isocyansäure aus cyanursäure |
| IN190806B (cs) * | 1998-11-16 | 2003-08-23 | Max India Ltd | |
| CN109956891B (zh) * | 2019-03-12 | 2022-04-19 | 东力（南通）化工有限公司 | 一种1,1-二甲基脲制备技术方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1155907A (en) * | 1967-07-03 | 1969-06-25 | Ici Ltd | Improvements in and relating to The Pyrolysis Of Urea |
| DE1908047A1 (de) * | 1969-02-18 | 1970-09-10 | Herbrand Kg Dr | Therapeutisch wirksame,N-mono-substituierte Harnstoffe |
| GB1457876A (en) * | 1972-12-15 | 1976-12-08 | Ici Ltd | Alkanolamine derivatives device for use in |
| GB1433920A (en) * | 1973-10-01 | 1976-04-28 | Ici Ltd | Alkanolamine derivatives |
| DE2937331A1 (de) * | 1979-09-14 | 1981-04-02 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von alkylharnstoffen |
| DE3031124A1 (de) * | 1980-08-18 | 1982-04-08 | Basf Ag, 6700 Ludwigshafen | Verfahren zur abtrennung von fluessigem harnstoff aus den abgasen der melaminsynthese |
| JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| DE3316494A1 (de) * | 1983-05-05 | 1984-11-08 | Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München | Verfahren zur herstellung eines cyanursaeurearmen isocyansaeure-ammoniak-gasgemisches und vorrichtung zur durchfuehrung des verfahrens |
| DE3534947A1 (de) * | 1985-10-01 | 1987-04-09 | Bayer Ag | Verfahren zur herstellung von polyaminen, polyamine und deren verwendung zur herstellung von polyurethanen |
| DE3636190A1 (de) * | 1986-10-24 | 1988-04-28 | Bayer Ag | Verfahren zur herstellung von n,n-diaryl-harnstoffen |
| CN1021819C (zh) * | 1988-01-20 | 1993-08-18 | 山之内制药株式会社 | 作为药物有用的双脲衍生物的制备方法 |
| US4996359A (en) * | 1988-03-14 | 1991-02-26 | Arco Chemical Technology, Inc. | Process for the preparation of aromatic bis dialkyl ureas |
| AT394715B (de) * | 1990-08-14 | 1992-06-10 | Chemie Linz Gmbh | Verfahren zur n-alkylierung von harnstoffen |
-
1990
- 1990-07-04 AT AT90112742T patent/ATE115555T1/de not_active IP Right Cessation
- 1990-07-04 ES ES90112742T patent/ES2066049T3/es not_active Expired - Lifetime
- 1990-07-04 EP EP90112742A patent/EP0410168B1/de not_active Expired - Lifetime
- 1990-07-04 DE DE59007989T patent/DE59007989D1/de not_active Expired - Fee Related
- 1990-07-12 NZ NZ234483A patent/NZ234483A/xx unknown
- 1990-07-12 US US07/552,695 patent/US5043444A/en not_active Expired - Fee Related
- 1990-07-23 ZA ZA905767A patent/ZA905767B/xx unknown
- 1990-07-24 CZ CS903680A patent/CZ280733B6/cs not_active IP Right Cessation
- 1990-07-26 KR KR1019900011363A patent/KR910002784A/ko not_active Withdrawn
- 1990-07-26 JP JP2196401A patent/JPH0366657A/ja active Pending
- 1990-07-26 YU YU146790A patent/YU146790A/sh unknown
- 1990-07-27 UA UA4830606A patent/UA19040A/uk unknown
- 1990-07-27 RU SU904830606A patent/RU1838295C/ru active
- 1990-07-27 AU AU59940/90A patent/AU629375B2/en not_active Ceased
- 1990-07-27 HU HU904663A patent/HU208305B/hu not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HU208305B (en) | 1993-09-28 |
| EP0410168A3 (en) | 1992-04-22 |
| HU904663D0 (en) | 1991-01-28 |
| ES2066049T3 (es) | 1995-03-01 |
| AU5994090A (en) | 1991-01-31 |
| UA19040A (uk) | 1997-12-25 |
| CZ280733B6 (cs) | 1996-04-17 |
| YU146790A (sh) | 1992-09-07 |
| US5043444A (en) | 1991-08-27 |
| KR910002784A (ko) | 1991-02-26 |
| EP0410168B1 (de) | 1994-12-14 |
| RU1838295C (ru) | 1993-08-30 |
| NZ234483A (en) | 1991-09-25 |
| EP0410168A2 (de) | 1991-01-30 |
| ATE115555T1 (de) | 1994-12-15 |
| HUT54974A (en) | 1991-04-29 |
| CZ368090A3 (en) | 1996-01-17 |
| DE59007989D1 (de) | 1995-01-26 |
| AU629375B2 (en) | 1992-10-01 |
| JPH0366657A (ja) | 1991-03-22 |
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