GB798662A - Improvements in and relating to derivatives of pyrazole - Google Patents

Improvements in and relating to derivatives of pyrazole

Info

Publication number
GB798662A
GB798662A GB31907/56A GB3190756A GB798662A GB 798662 A GB798662 A GB 798662A GB 31907/56 A GB31907/56 A GB 31907/56A GB 3190756 A GB3190756 A GB 3190756A GB 798662 A GB798662 A GB 798662A
Authority
GB
United Kingdom
Prior art keywords
pyrazole
relating
derivatives
malonodinitrile
cyanopyrazole
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
GB31907/56A
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.)
Wellcome Foundation Ltd
Original Assignee
Wellcome Foundation Ltd
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 Wellcome Foundation Ltd filed Critical Wellcome Foundation Ltd
Publication of GB798662A publication Critical patent/GB798662A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings 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
    • C07D231/38—Nitrogen atoms

Abstract

The invention comprises 3-amino-4-cyanopyrazole and its preparation by reacting ethoxymethylene malonodinitrile with hydrazine. In examples the reactants are refluxed in ethanol and the mixture then evaporated to dryness to leave the required product.
GB31907/56A 1955-10-27 1956-10-19 Improvements in and relating to derivatives of pyrazole Expired GB798662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US798662XA 1955-10-27 1955-10-27

Publications (1)

Publication Number Publication Date
GB798662A true GB798662A (en) 1958-07-23

Family

ID=22153292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31907/56A Expired GB798662A (en) 1955-10-27 1956-10-19 Improvements in and relating to derivatives of pyrazole

Country Status (1)

Country Link
GB (1) GB798662A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998419A (en) * 1959-10-30 1961-08-29 Du Pont Certain amino, dicyano pyrazoles and process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998419A (en) * 1959-10-30 1961-08-29 Du Pont Certain amino, dicyano pyrazoles and process

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