GB864284A - Improvements in or relating to the preparation of 2-ethylcrotonoylurea - Google Patents

Improvements in or relating to the preparation of 2-ethylcrotonoylurea

Info

Publication number
GB864284A
GB864284A GB31045/58A GB3104558A GB864284A GB 864284 A GB864284 A GB 864284A GB 31045/58 A GB31045/58 A GB 31045/58A GB 3104558 A GB3104558 A GB 3104558A GB 864284 A GB864284 A GB 864284A
Authority
GB
United Kingdom
Prior art keywords
cis
ethyl
given
oxide
ethylcrotonoylurea
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
GB31045/58A
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.)
Bayer Corp
Original Assignee
Miles Laboratories Inc
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 Miles Laboratories Inc filed Critical Miles Laboratories Inc
Publication of GB864284A publication Critical patent/GB864284A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C273/1854—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 by reactions not involving the formation of the N-C(O)-N- moiety

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

2-Ethyl-cis-crotonoylurea is prepared by dehydrohalogenation of 2-ethyl-2-bromobutyrylurea with an oxide of cadmium, calcium, copper or zinc at an elevated temperature. The process may be effected in an organic solvent such as isopropanol, ethanol or butanol, or alternatively the carbromal and the metallic oxide in a highly dispersed dry form, such as a powder, may be intimately contacted throughout the heating period, preferably at pressures below atmospheric. Examples, in one of which the lower melting transisomer is also isolated, are given, and the catalytic hydrogenation of the product to diethylacetylurea is also described. It is stated that the configurations of the cis and transisomers given in the parent Specification are incorrect.
GB31045/58A 1957-09-30 1958-09-29 Improvements in or relating to the preparation of 2-ethylcrotonoylurea Expired GB864284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US864284XA 1957-09-30 1957-09-30

Publications (1)

Publication Number Publication Date
GB864284A true GB864284A (en) 1961-03-29

Family

ID=22198506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31045/58A Expired GB864284A (en) 1957-09-30 1958-09-29 Improvements in or relating to the preparation of 2-ethylcrotonoylurea

Country Status (1)

Country Link
GB (1) GB864284A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751119A1 (en) * 1995-06-26 1997-01-02 Dainippon Ink And Chemicals, Inc. A process for preparing acryloyl carbamates or ureas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751119A1 (en) * 1995-06-26 1997-01-02 Dainippon Ink And Chemicals, Inc. A process for preparing acryloyl carbamates or ureas

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