ZA851958B - Process for the preparation of isocyanates - Google Patents
Process for the preparation of isocyanatesInfo
- Publication number
- ZA851958B ZA851958B ZA851958A ZA851958A ZA851958B ZA 851958 B ZA851958 B ZA 851958B ZA 851958 A ZA851958 A ZA 851958A ZA 851958 A ZA851958 A ZA 851958A ZA 851958 B ZA851958 B ZA 851958B
- Authority
- ZA
- South Africa
- Prior art keywords
- general formula
- see diagramm
- optionally substituted
- preparation
- given above
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D273/00—Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
- C07D271/02—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms not condensed with other rings
- C07D271/08—1,2,5-Oxadiazoles; Hydrogenated 1,2,5-oxadiazoles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
1. Process for the preparation of 3-isocyanato-1,2,5-oxadiazoles of the general formula I see diagramm : EP0156198,P7,F1 in which R represents an optionally substituted aromatic radical which does not react with phosgene under the process conditions according to the invention, characterized in that compounds of the general formula II see diagramm : EP0156198,P7,F2 in which R has the meaning given above and R**1 represents hydrogen or the groups of the general formulae III or IV see diagramm : EP0156198,P7,F3 in which R has the meaning given above and R**2 denotes an optionally substituted aliphatic or aromatic radical, are reacted with phosgene at temperatures between 150 and 220 degrees C in the presence of an organic diluent, and the resulting isocyanate of the general formula I is isolated by the customary methods and, if required, purified.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843409887 DE3409887A1 (en) | 1984-03-17 | 1984-03-17 | METHOD FOR PRODUCING ISOCYANATES |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA851958B true ZA851958B (en) | 1985-11-27 |
Family
ID=6230837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA851958A ZA851958B (en) | 1984-03-17 | 1985-03-15 | Process for the preparation of isocyanates |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0156198B1 (en) |
JP (1) | JPS60204773A (en) |
KR (1) | KR920003896B1 (en) |
AT (1) | ATE33646T1 (en) |
CA (1) | CA1246587A (en) |
DE (2) | DE3409887A1 (en) |
DK (1) | DK120585A (en) |
HU (1) | HU196975B (en) |
IL (1) | IL74603A (en) |
ZA (1) | ZA851958B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3622862A1 (en) * | 1986-07-08 | 1988-01-21 | Bayer Ag | SUBSTITUTED FURAZANE |
DE4208873A1 (en) * | 1992-03-19 | 1993-09-23 | Bayer Ag | FURAZANYL URINS |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1071629A (en) * | 1951-09-15 | 1954-09-02 | France Etat | Process for the preparation of isocyanates |
-
1984
- 1984-03-17 DE DE19843409887 patent/DE3409887A1/en not_active Withdrawn
-
1985
- 1985-03-05 DE DE8585102444T patent/DE3562247D1/en not_active Expired
- 1985-03-05 EP EP85102444A patent/EP0156198B1/en not_active Expired
- 1985-03-05 AT AT85102444T patent/ATE33646T1/en not_active IP Right Cessation
- 1985-03-13 JP JP60048447A patent/JPS60204773A/en active Granted
- 1985-03-14 IL IL74603A patent/IL74603A/en unknown
- 1985-03-15 CA CA000476613A patent/CA1246587A/en not_active Expired
- 1985-03-15 KR KR1019850001670A patent/KR920003896B1/en not_active IP Right Cessation
- 1985-03-15 ZA ZA851958A patent/ZA851958B/en unknown
- 1985-03-15 DK DK120585A patent/DK120585A/en not_active Application Discontinuation
- 1985-03-15 HU HU85966A patent/HU196975B/en unknown
Also Published As
Publication number | Publication date |
---|---|
HU196975B (en) | 1989-02-28 |
KR850006390A (en) | 1985-10-05 |
JPS60204773A (en) | 1985-10-16 |
JPH0481991B2 (en) | 1992-12-25 |
IL74603A0 (en) | 1985-06-30 |
DE3409887A1 (en) | 1985-09-19 |
EP0156198A3 (en) | 1986-05-07 |
HUT36810A (en) | 1985-10-28 |
CA1246587A (en) | 1988-12-13 |
EP0156198A2 (en) | 1985-10-02 |
EP0156198B1 (en) | 1988-04-20 |
KR920003896B1 (en) | 1992-05-18 |
DE3562247D1 (en) | 1988-05-26 |
DK120585D0 (en) | 1985-03-15 |
IL74603A (en) | 1989-06-30 |
ATE33646T1 (en) | 1988-05-15 |
DK120585A (en) | 1985-09-18 |
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