GB1318999A - Production of 4-ureideohexahydropyrimidin-2-one - Google Patents

Production of 4-ureideohexahydropyrimidin-2-one

Info

Publication number
GB1318999A
GB1318999A GB3575670A GB3575670A GB1318999A GB 1318999 A GB1318999 A GB 1318999A GB 3575670 A GB3575670 A GB 3575670A GB 3575670 A GB3575670 A GB 3575670A GB 1318999 A GB1318999 A GB 1318999A
Authority
GB
United Kingdom
Prior art keywords
ureidohexahydropyrimidin
acrolein
ureideohexahydropyrimidin
production
urea
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
Application number
GB3575670A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB1318999A publication Critical patent/GB1318999A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/06—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D239/08—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms directly attached in position 2
    • C07D239/10—Oxygen or sulfur atoms
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

1318999 4-Ureidohexahydropyrimidin-2-one DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 23 July 1970 [6 Aug 1969] 35756/70 Heading C2C 4 - Ureidohexahydropyrimidin - 2 - one is prepared by condensing urea with acrolein in aqueous acid solution, at a pH of 0-4 and a temperature of 40-100‹ C. there being used at least 4 mols of urea per mol of acrolein. Preferably the mother liquor from the reaction is recycled as reaction medium it being purified by subjecting it either continuously or at intervals to treatment with an organic solvent, e.g. methanol.
GB3575670A 1969-08-06 1970-07-23 Production of 4-ureideohexahydropyrimidin-2-one Expired GB1318999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691939867 DE1939867C3 (en) 1969-08-06 1969-08-06 Process for the preparation of 4-ureido-hexahydropyrimidin-2-one

Publications (1)

Publication Number Publication Date
GB1318999A true GB1318999A (en) 1973-05-31

Family

ID=5741989

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3575670A Expired GB1318999A (en) 1969-08-06 1970-07-23 Production of 4-ureideohexahydropyrimidin-2-one
GB5872670A Expired GB1319000A (en) 1969-08-06 1970-11-30 Fertiliser composition

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB5872670A Expired GB1319000A (en) 1969-08-06 1970-11-30 Fertiliser composition

Country Status (7)

Country Link
BE (1) BE754420A (en)
CA (1) CA941376A (en)
CH (2) CH531519A (en)
DE (1) DE1939867C3 (en)
FR (1) FR2057005B1 (en)
GB (2) GB1318999A (en)
NL (1) NL7010157A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN158131B (en) * 1981-06-02 1986-09-13 Santa Barbara Res Center
US4560874A (en) * 1981-06-02 1985-12-24 Santa Barbara Research Center Reference channel for sensing optical contamination
CH665915A5 (en) * 1981-11-13 1988-06-15 Paul Kovacs DEVICE FOR MONITORING ICE FORMATION.
GB2175686A (en) * 1985-05-28 1986-12-03 Graviner Ltd Fire or explosion detection arrangement
DE19709906C2 (en) * 1997-03-11 1999-06-10 Leuze Electronic Gmbh & Co Optoelectronic device
DE19732776C1 (en) * 1997-07-30 1999-02-11 Leuze Electronic Gmbh & Co Optoelectronic device for detecting object in surveillance zone
DE19946220C1 (en) * 1999-09-22 2001-01-04 Jenoptik Jena Gmbh Opto-electronic sensor with evaluator electronics especially for vehicle windscreens has radiation conductor copying test light emerging from transmitters through test surface to at least two receivers

Also Published As

Publication number Publication date
CH538435A (en) 1973-08-15
FR2057005B1 (en) 1973-01-12
DE1939867C3 (en) 1978-12-07
DE1939867B2 (en) 1978-01-19
CA941376A (en) 1974-02-05
NL7010157A (en) 1971-02-09
DE1939867A1 (en) 1971-02-18
GB1319000A (en) 1973-05-31
FR2057005A1 (en) 1971-05-07
CH531519A (en) 1972-12-15
BE754420A (en) 1971-01-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee