GB729348A - Hydrazones of heterocyclic aldehydes - Google Patents

Hydrazones of heterocyclic aldehydes

Info

Publication number
GB729348A
GB729348A GB32319/52A GB3231952A GB729348A GB 729348 A GB729348 A GB 729348A GB 32319/52 A GB32319/52 A GB 32319/52A GB 3231952 A GB3231952 A GB 3231952A GB 729348 A GB729348 A GB 729348A
Authority
GB
United Kingdom
Prior art keywords
piperonal
acid hydrazide
pyridine
hydrazone
aldehyde
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
GB32319/52A
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 AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB729348A publication Critical patent/GB729348A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
    • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/86—Hydrazides; Thio or imino analogues thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pyridine Compounds (AREA)

Abstract

The invention comprises compounds of the formula <FORM:0729348/IV (b)/1> wherein R represents a piperonylidene or an a - or g -picolylidene radical, and a process for their preparation by condensing the appropriate pyridine acid hydrazide with piperonal or a - or g -pyridine aldehyde. The compounds may also be obtained by reacting a heterocyclic aldehyde hydrazone with a pyridine carboxylic acid or a functional derivative thereof. In examples: (1) nicotinic acid hydrazide is refluxed with piperonal in methanol to yield the piperonal hydrazone of nicotinic acid hydrazide; (2) isonicotinic acid hydrazide and piperonal are refluxed in ethanol to give the piperonal hydrazone of isonicotinic acid hydrazide; (3) as in (2) replacing piperonal by a -pyridine aldehyde to yield the a -pyridine aldehyde hydrazone of isonicotinic acid hydrazide; (4) as in (2) replacing piperonal by g -pyridine aldehyde to yield the g -pyridine aldehyde hydrazone of isonicotinic acid hydrazide.
GB32319/52A 1951-12-22 1952-12-19 Hydrazones of heterocyclic aldehydes Expired GB729348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE729348X 1951-12-22

Publications (1)

Publication Number Publication Date
GB729348A true GB729348A (en) 1955-05-04

Family

ID=6635942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32319/52A Expired GB729348A (en) 1951-12-22 1952-12-19 Hydrazones of heterocyclic aldehydes

Country Status (1)

Country Link
GB (1) GB729348A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900388A (en) * 1957-08-08 1959-08-18 Jack M Tien Acyl hydrazine derivatives of bis(4-dimethylaminophenyl) methane and process
US3073819A (en) * 1959-04-30 1963-01-15 Hoffmann La Roche Hydrazine derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900388A (en) * 1957-08-08 1959-08-18 Jack M Tien Acyl hydrazine derivatives of bis(4-dimethylaminophenyl) methane and process
US3073819A (en) * 1959-04-30 1963-01-15 Hoffmann La Roche Hydrazine derivatives

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