GB1321280A - Process for the production of 3-methylisoxazole - Google Patents
Process for the production of 3-methylisoxazoleInfo
- Publication number
- GB1321280A GB1321280A GB5496870A GB5496870A GB1321280A GB 1321280 A GB1321280 A GB 1321280A GB 5496870 A GB5496870 A GB 5496870A GB 5496870 A GB5496870 A GB 5496870A GB 1321280 A GB1321280 A GB 1321280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methylisoxazole
- reacting
- soln
- nov
- iii
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
- C07D261/02—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings
- C07D261/04—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
- C07D261/02—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings
- C07D261/06—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members
- C07D261/08—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
1321280 3-methylisoxazole CHEMISCHE WERKE HULS AG 19 Nov 1970 [20 Nov 1969] 54968/70 Heading C2C A process for the preparation of 3-methylisoxazole (I) comprises (a) forming 4,4-dimethoxybutane-2-one oxime (II) by reacting the ketone with a salt of NH 2 OH in aq. soln. at pH 7-12, and 20-120‹ C.; (b) reacting II with MeOH containing 0À5-10 wt. per cent H 2 SO 4 at 10-80‹C., to give 3-methyl-5-methoxyisoxazoline (III); and (c) reacting III in aq. soln. at pH below 2, and 20-120‹ C. In a modification, II is reacted with MeOH containing 1-10 wt. per cent HCl at 20-80‹ C., to form I directly.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691958252 DE1958252A1 (en) | 1969-11-20 | 1969-11-20 | Process for the preparation of 3-methylisoxazole |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1321280A true GB1321280A (en) | 1973-06-27 |
Family
ID=5751600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5496870A Expired GB1321280A (en) | 1969-11-20 | 1970-11-19 | Process for the production of 3-methylisoxazole |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH532070A (en) |
DE (1) | DE1958252A1 (en) |
FR (1) | FR2069315A5 (en) |
GB (1) | GB1321280A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984001774A1 (en) * | 1982-10-26 | 1984-05-10 | Cheminova As | A process for the preparation of 3-hydroxy-isoxazolole |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59190977A (en) * | 1983-04-12 | 1984-10-29 | Sankyo Co Ltd | Method for producing continuously 3-hydroxy-5- methylisoxazole |
-
1969
- 1969-11-20 DE DE19691958252 patent/DE1958252A1/en active Pending
-
1970
- 1970-11-13 FR FR7040570A patent/FR2069315A5/fr not_active Expired
- 1970-11-17 CH CH1705270A patent/CH532070A/en not_active IP Right Cessation
- 1970-11-19 GB GB5496870A patent/GB1321280A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984001774A1 (en) * | 1982-10-26 | 1984-05-10 | Cheminova As | A process for the preparation of 3-hydroxy-isoxazolole |
Also Published As
Publication number | Publication date |
---|---|
FR2069315A5 (en) | 1971-09-03 |
CH532070A (en) | 1972-12-31 |
DE1958252A1 (en) | 1971-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |