GB881375A - Improvements in or relating to the preparation of nitrofuran compounds - Google Patents

Improvements in or relating to the preparation of nitrofuran compounds

Info

Publication number
GB881375A
GB881375A GB5743/59A GB574359A GB881375A GB 881375 A GB881375 A GB 881375A GB 5743/59 A GB5743/59 A GB 5743/59A GB 574359 A GB574359 A GB 574359A GB 881375 A GB881375 A GB 881375A
Authority
GB
United Kingdom
Prior art keywords
furfurylidene
preparation
hydrazine
prepared
relating
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
GB5743/59A
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.)
Warner Chilcott Pharmaceuticals Inc
Original Assignee
Norwich Pharmacal Co
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 Norwich Pharmacal Co filed Critical Norwich Pharmacal Co
Publication of GB881375A publication Critical patent/GB881375A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three 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
    • C07D307/70—Nitro radicals
    • C07D307/71—Nitro radicals attached in position 5
    • C07D307/72—Nitro radicals attached in position 5 with hydrocarbon radicals, substituted by nitrogen-containing radicals, attached in position 2
    • C07D307/74—Nitro radicals attached in position 5 with hydrocarbon radicals, substituted by nitrogen-containing radicals, attached in position 2 by hydrazino or hydrazono or such substituted radicals
    • C07D307/76—Nitro radicals attached in position 5 with hydrocarbon radicals, substituted by nitrogen-containing radicals, attached in position 2 by hydrazino or hydrazono or such substituted radicals having carbonic acyl radicals or their thio or nitrogen analogues directly attached to the hydrazino or hydrazono radical, e.g. semicarbazides

Abstract

Nitrofurfurylidene-hydrazine compounds are prepared by nitrating a N2-substituted-N1-furfurylidene-hydrazine with a mixture of concentrated nitric and sulphuric acids in a substantially anhydrous medium free from acetic anhydride, preferably at a temperature not above 5 DEG C. The anhydrous medium may be concentrated sulphuric acid. Specified products have the formula <FORM:0881375/IV (b)/1> where A is a ureido, 2,4-dioxo-1-imidazolidyl, or 2-oxo-3-oxazolidyl radical. The starting furfurylidene-hydrazines may be prepared by condensing furfuraldehyde with the appropriate substituted hydrazine; the preparation of N-(2-furfurylidene)-1-aminohydantion and N - (2 - furfurylidene) - 3 - amino - 2 - oxazolidone is described. Specification 735,136 is referred to.
GB5743/59A 1958-02-28 1959-02-19 Improvements in or relating to the preparation of nitrofuran compounds Expired GB881375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US881375XA 1958-02-28 1958-02-28

Publications (1)

Publication Number Publication Date
GB881375A true GB881375A (en) 1961-11-01

Family

ID=22209577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5743/59A Expired GB881375A (en) 1958-02-28 1959-02-19 Improvements in or relating to the preparation of nitrofuran compounds

Country Status (1)

Country Link
GB (1) GB881375A (en)

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