GB2275268B - Improved process for the preparation of 4,4-diaryl-3,1-benzoxazines - Google Patents

Improved process for the preparation of 4,4-diaryl-3,1-benzoxazines

Info

Publication number
GB2275268B
GB2275268B GB9402926A GB9402926A GB2275268B GB 2275268 B GB2275268 B GB 2275268B GB 9402926 A GB9402926 A GB 9402926A GB 9402926 A GB9402926 A GB 9402926A GB 2275268 B GB2275268 B GB 2275268B
Authority
GB
United Kingdom
Prior art keywords
benzoxazines
diaryl
preparation
improved process
improved
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 - Fee Related
Application number
GB9402926A
Other languages
English (en)
Other versions
GB2275268A (en
GB9402926D0 (en
Inventor
Horst Berneth
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 GB9402926D0 publication Critical patent/GB9402926D0/en
Publication of GB2275268A publication Critical patent/GB2275268A/en
Application granted granted Critical
Publication of GB2275268B publication Critical patent/GB2275268B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D265/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one oxygen atom as the only ring hetero atoms
    • C07D265/04—1,3-Oxazines; Hydrogenated 1,3-oxazines
    • C07D265/12—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems
    • C07D265/14—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems condensed with one six-membered ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
GB9402926A 1993-02-17 1994-02-16 Improved process for the preparation of 4,4-diaryl-3,1-benzoxazines Expired - Fee Related GB2275268B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934304797 DE4304797B4 (de) 1993-02-17 1993-02-17 Verbessertes Verfahren zur Herstellung von 4,4-Diaryl-3,1-benzoxazinen

Publications (3)

Publication Number Publication Date
GB9402926D0 GB9402926D0 (en) 1994-04-06
GB2275268A GB2275268A (en) 1994-08-24
GB2275268B true GB2275268B (en) 1996-05-15

Family

ID=6480676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9402926A Expired - Fee Related GB2275268B (en) 1993-02-17 1994-02-16 Improved process for the preparation of 4,4-diaryl-3,1-benzoxazines

Country Status (2)

Country Link
DE (1) DE4304797B4 (de)
GB (1) GB2275268B (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187329A1 (de) * 1985-01-08 1986-07-16 Bayer Ag Chromogene 3,1-Benzoxazine
EP0254858A2 (de) * 1986-07-02 1988-02-03 Bayer Ag Chromogene 3,1.Benzoxazine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187329A1 (de) * 1985-01-08 1986-07-16 Bayer Ag Chromogene 3,1-Benzoxazine
EP0254858A2 (de) * 1986-07-02 1988-02-03 Bayer Ag Chromogene 3,1.Benzoxazine

Also Published As

Publication number Publication date
GB2275268A (en) 1994-08-24
DE4304797B4 (de) 2005-06-16
DE4304797A1 (de) 1994-08-18
GB9402926D0 (en) 1994-04-06

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070216