CH396918A - Process for the preparation of hydantoins which are mono- or disubstituted in the 5-position - Google Patents
Process for the preparation of hydantoins which are mono- or disubstituted in the 5-positionInfo
- Publication number
- CH396918A CH396918A CH356260A CH356260A CH396918A CH 396918 A CH396918 A CH 396918A CH 356260 A CH356260 A CH 356260A CH 356260 A CH356260 A CH 356260A CH 396918 A CH396918 A CH 396918A
- Authority
- CH
- Switzerland
- Prior art keywords
- hydantoins
- disubstituted
- mono
- preparation
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D233/72—Two oxygen atoms, e.g. hydantoin
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED30432A DE1166201B (en) | 1959-04-15 | 1959-04-15 | Pressureless process for the preparation of hydantoins which are mono- or disubstituted in the 5-position |
Publications (1)
Publication Number | Publication Date |
---|---|
CH396918A true CH396918A (en) | 1965-08-15 |
Family
ID=7040491
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH356260A CH396918A (en) | 1959-04-15 | 1960-03-30 | Process for the preparation of hydantoins which are mono- or disubstituted in the 5-position |
CH6776560A CH398618A (en) | 1959-04-15 | 1960-03-30 | Process for the preparation of hydantoins which are mono- or disubstituted in the 5-position |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH6776560A CH398618A (en) | 1959-04-15 | 1960-03-30 | Process for the preparation of hydantoins which are mono- or disubstituted in the 5-position |
Country Status (3)
Country | Link |
---|---|
CH (2) | CH396918A (en) |
DE (1) | DE1166201B (en) |
GB (1) | GB936664A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2430617C2 (en) * | 1974-06-26 | 1987-01-15 | Degussa Ag, 6000 Frankfurt | Process for the preparation of 3,6-bis-(2-methylmercaptoethyl)-2,5-piperazinedione |
US4128719A (en) | 1975-07-25 | 1978-12-05 | Sagami Chemical Research Center | Process for producing 4-carboxamido-5-cyano-2-imidazolone |
JPS5217471A (en) * | 1975-07-25 | 1977-02-09 | Sagami Chem Res Center | Process for preparation of 4- carboxamide-5-cyano-2-imidazolone |
DE2744428B2 (en) * | 1977-10-03 | 1981-01-15 | Lentia Gmbh, Chem. U. Pharm. Erzeugnisse - Industriebedarf, 8000 Muenchen | Process for the continuous production of hydantoin derivatives and apparatus for carrying out the same |
DE19547236A1 (en) | 1995-12-18 | 1997-07-03 | Degussa | Process for the preparation of D, L-methionine or its salt |
CN104557721B (en) * | 2014-12-30 | 2017-12-15 | 沈阳化工研究院有限公司 | A kind of method for producing 5,5 DMHs |
EP3339289A1 (en) | 2016-12-21 | 2018-06-27 | Evonik Degussa GmbH | Process for the preparation of methionine |
CN108245921B (en) * | 2018-03-20 | 2024-03-12 | 河北鑫淘沅医药科技有限公司 | Evaporation crystallization system and process method of 5, 5-dimethyl hydantoin mother liquor |
JP7472137B2 (en) | 2018-12-14 | 2024-04-22 | エボニック オペレーションズ ゲーエムベーハー | Method for producing methionine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE566094C (en) * | 1929-05-26 | 1932-12-14 | Hermann Bergs Dr Ing | Process for the preparation of hydantoins |
US2603651A (en) * | 1947-12-04 | 1952-07-15 | Ayerst Mckenna & Harrison | Process for preparing lysine |
-
1959
- 1959-04-15 DE DED30432A patent/DE1166201B/en active Pending
-
1960
- 1960-03-30 CH CH356260A patent/CH396918A/en unknown
- 1960-03-30 CH CH6776560A patent/CH398618A/en unknown
- 1960-04-08 GB GB1262060A patent/GB936664A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1166201B (en) | 1964-03-26 |
CH398618A (en) | 1966-03-15 |
GB936664A (en) | 1963-09-11 |
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