NL6919690A - 5,5,-diphenyl hydantoin from benzoin and - urea - Google Patents

5,5,-diphenyl hydantoin from benzoin and - urea

Info

Publication number
NL6919690A
NL6919690A NL6919690A NL6919690A NL6919690A NL 6919690 A NL6919690 A NL 6919690A NL 6919690 A NL6919690 A NL 6919690A NL 6919690 A NL6919690 A NL 6919690A NL 6919690 A NL6919690 A NL 6919690A
Authority
NL
Netherlands
Prior art keywords
benzoin
urea
pref
diphenyl hydantoin
equiv
Prior art date
Application number
NL6919690A
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 filed Critical
Priority to NL6919690A priority Critical patent/NL6919690A/en
Publication of NL6919690A publication Critical patent/NL6919690A/en

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
    • C07D233/74—Two oxygen atoms, e.g. hydantoin with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to other ring members

Landscapes

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

Abstract

(I) is prepd. by an improved process in which benzoin is condensed with urea, pref. 1-3 equiv., in the presence of sulphur, pref. 0.5-4 equiv. and alkali pref. 10-40% concn. in H2O or an aqs. organic solvent at >60 degrees. (I) is isolated directly from the reaction mixture.
NL6919690A 1969-12-31 1969-12-31 5,5,-diphenyl hydantoin from benzoin and - urea NL6919690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL6919690A NL6919690A (en) 1969-12-31 1969-12-31 5,5,-diphenyl hydantoin from benzoin and - urea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6919690A NL6919690A (en) 1969-12-31 1969-12-31 5,5,-diphenyl hydantoin from benzoin and - urea

Publications (1)

Publication Number Publication Date
NL6919690A true NL6919690A (en) 1971-07-02

Family

ID=19808750

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6919690A NL6919690A (en) 1969-12-31 1969-12-31 5,5,-diphenyl hydantoin from benzoin and - urea

Country Status (1)

Country Link
NL (1) NL6919690A (en)

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