GB191501253A - Manufacture and Production of New Dyestuff from Natural Flavone or Flavonole Colouring Matters. - Google Patents

Manufacture and Production of New Dyestuff from Natural Flavone or Flavonole Colouring Matters.

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Publication number
GB191501253A
GB191501253A GB191501253DA GB191501253A GB 191501253 A GB191501253 A GB 191501253A GB 191501253D A GB191501253D A GB 191501253DA GB 191501253 A GB191501253 A GB 191501253A
Authority
GB
United Kingdom
Prior art keywords
mordants
flavone
dyes
flavonole
ethyl bromide
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
Inventor
Edwin Roy Watson
Kumud Sen Behari
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191501253A publication Critical patent/GB191501253A/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
    • C07D311/60—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with aryl radicals attached in position 2
    • C07D311/62—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with aryl radicals attached in position 2 with oxygen atoms directly attached in position 3, e.g. anthocyanidins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

1253. Watson, E. R., and Sen, K. B. Jan. 26. Flavone dyes.-Mordant dyes are obtained by treating ethylated flavone or flavonol dyes with magnesium ethyl bromide, and de-ethylating the products either completely by means of hydrochloric acid or partially by means of sulphuric acid. According to examples: a mixture of tetra- and penta-ethyl ethers of quercetin is treated with magnesium ethyl bromide in ether solution, and the product is boiled with dilute sulphuric acid, giving a dye which yields on wool greenish-blue with chrome mordants, navy-blue on alum mordants, and violet on tin mordants; the tetraethyl ether of luteolin is treated with magnesium ethyl bromide in ether solution, and the product heated with hydrochloric acid solution, giving a dye which yields on wool purple shades with alum or chrome mordants, and crimson with tin mordants.
GB191501253D 1915-01-26 1915-01-26 Manufacture and Production of New Dyestuff from Natural Flavone or Flavonole Colouring Matters. Expired GB191501253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191501253T 1915-01-26

Publications (1)

Publication Number Publication Date
GB191501253A true GB191501253A (en) 1915-05-27

Family

ID=34361282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191501253D Expired GB191501253A (en) 1915-01-26 1915-01-26 Manufacture and Production of New Dyestuff from Natural Flavone or Flavonole Colouring Matters.

Country Status (1)

Country Link
GB (1) GB191501253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490615A1 (en) * 1990-12-10 1992-06-17 IDB HOLDING S.p.A. Process for synthesising anthocyanidins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490615A1 (en) * 1990-12-10 1992-06-17 IDB HOLDING S.p.A. Process for synthesising anthocyanidins

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