GB1337263A - Production of oxygen-containing heterocyclic compounds - Google Patents

Production of oxygen-containing heterocyclic compounds

Info

Publication number
GB1337263A
GB1337263A GB1337263DA GB1337263A GB 1337263 A GB1337263 A GB 1337263A GB 1337263D A GB1337263D A GB 1337263DA GB 1337263 A GB1337263 A GB 1337263A
Authority
GB
United Kingdom
Prior art keywords
oxygen
butadiene
heterocyclic compounds
containing heterocyclic
dihydropyran
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
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB1337263A publication Critical patent/GB1337263A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
    • C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/16—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D309/18—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member containing only hydrogen and carbon atoms in addition to the ring hetero atom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1337263 Oxygen-containing heterocyclic compounds IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Dec 1971 [2 Nov 1970] 51922/70 Heading C2C A product comprising a major proportion of a dihydropyran is produced by contacting butadiene or a chlor- or methyl-derivative thereof with formaldehyde in the presence of a Lewis acid catalyst and a substantially non- aqueous solvent comprising nitrobenzene, chlorobenzene or dichlorobenzene the Lewis acid catalyst being contacted with the butadiene (or derivative) either before or simultaneously as (but not after) it is contacted by the formaldehyde. Preferably the solvent comprises as a minor additive an additional organic compound, other than an amine, which is a Lewis base containing an oxygen, nitrogen or sulphur atom, for example, a ketone, an ether or a nitrile. Examples describe the conversion of butadiene to dihydropyran.
GB1337263D 1971-12-02 1971-12-02 Production of oxygen-containing heterocyclic compounds Expired GB1337263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5192270 1971-12-02

Publications (1)

Publication Number Publication Date
GB1337263A true GB1337263A (en) 1973-11-14

Family

ID=10461939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1337263D Expired GB1337263A (en) 1971-12-02 1971-12-02 Production of oxygen-containing heterocyclic compounds

Country Status (1)

Country Link
GB (1) GB1337263A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834509A1 (en) * 1996-10-03 1998-04-08 Kao Corporation Process for preparing dihydropyrane compound
EP1516879A1 (en) * 2003-09-17 2005-03-23 Kao Corporation Process for producing pyran
JP2005112844A (en) * 2003-09-17 2005-04-28 Kao Corp Method for production of pyran

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834509A1 (en) * 1996-10-03 1998-04-08 Kao Corporation Process for preparing dihydropyrane compound
US5907048A (en) * 1996-10-03 1999-05-25 Kao Corporation Process for preparing dihydropyrane compound
EP1516879A1 (en) * 2003-09-17 2005-03-23 Kao Corporation Process for producing pyran
JP2005112844A (en) * 2003-09-17 2005-04-28 Kao Corp Method for production of pyran
US7064221B2 (en) 2003-09-17 2006-06-20 Kao Corporation Process for producing pyran
JP4545478B2 (en) * 2003-09-17 2010-09-15 花王株式会社 Piran production method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees