GB1300431A - 6-alkoxy-5,6-dihydro-4h-pyrans and their production and conversion into trimethyl-2-cyclohexen-1-ones - Google Patents

6-alkoxy-5,6-dihydro-4h-pyrans and their production and conversion into trimethyl-2-cyclohexen-1-ones

Info

Publication number
GB1300431A
GB1300431A GB2357070A GB2357070A GB1300431A GB 1300431 A GB1300431 A GB 1300431A GB 2357070 A GB2357070 A GB 2357070A GB 2357070 A GB2357070 A GB 2357070A GB 1300431 A GB1300431 A GB 1300431A
Authority
GB
United Kingdom
Prior art keywords
formula
trimethyl
alkoxy
production
pyrans
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
GB2357070A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1300431A publication Critical patent/GB1300431A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07D309/28—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 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
    • C07D309/30—Oxygen atoms, e.g. delta-lactones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
    • C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
    • C07C45/60—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in six-membered rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1300431 Production of 6-alkoxy-5,6-dihydro- 4H - pyrans and trimethyl - 2 - cyclohexene-1- ones BADISCHE ANILIN- & SODA-FABRIK AG 15 May 1970 [16 May 1969] 23570/70 Heading C2C The invention relates to the production of (a) a 6-alkoxy-5,6-di-hydro-4H-pyran having the general formula in which R<SP>1</SP> and R<SP>2</SP> are different substituents selected from hydrogen and methyl and R<SP>3</SP> is an aliphatic radical having 1 to 20 carbon atoms; and (b) a trimethyl-2-cyclohexene-1-one having the formula which comprises (a) contacting vinyl ether of the formula R<SP>3</SP>OCH=CH 2 with 3-methyl-2- hexene-4-one or contacting an isopropenyl ether of the formula R<SP>3</SP>OC(CH 3 )=CH 2 with 2- methyl-1-pentene - 3-one and (b) contacting the compound having the Formula I prepared in step (a) with a strong acid.
GB2357070A 1969-05-16 1970-05-15 6-alkoxy-5,6-dihydro-4h-pyrans and their production and conversion into trimethyl-2-cyclohexen-1-ones Expired GB1300431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691924844 DE1924844A1 (en) 1969-05-16 1969-05-16 Process for the preparation of trimethyl-2-cyclohexen-1-ones

Publications (1)

Publication Number Publication Date
GB1300431A true GB1300431A (en) 1972-12-20

Family

ID=5734275

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2357070A Expired GB1300431A (en) 1969-05-16 1970-05-15 6-alkoxy-5,6-dihydro-4h-pyrans and their production and conversion into trimethyl-2-cyclohexen-1-ones

Country Status (8)

Country Link
AT (1) AT296300B (en)
AU (1) AU1513470A (en)
BE (1) BE750463A (en)
CH (1) CH532569A (en)
DE (1) DE1924844A1 (en)
FR (1) FR2052386A5 (en)
GB (1) GB1300431A (en)
NL (1) NL7007016A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023285329A1 (en) * 2021-07-13 2023-01-19 Basf Se Use of 2,3,6-trimethyl-2-cyclohexen-1-one as aroma ingredient

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4868573A (en) * 1971-12-21 1973-09-18
DE2504930C2 (en) * 1975-02-06 1983-02-10 Basf Ag, 6700 Ludwigshafen Process for the preparation of 2,6,6-trimethyl-cyclohex-2-en-1-one

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023285329A1 (en) * 2021-07-13 2023-01-19 Basf Se Use of 2,3,6-trimethyl-2-cyclohexen-1-one as aroma ingredient

Also Published As

Publication number Publication date
NL7007016A (en) 1970-11-18
BE750463A (en) 1970-11-16
AT296300B (en) 1972-02-10
FR2052386A5 (en) 1971-04-09
CH532569A (en) 1973-01-15
DE1924844A1 (en) 1970-11-19
AU1513470A (en) 1971-11-18

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Legal Events

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