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-onesInfo
- 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
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.
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)
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)
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 |
-
1969
- 1969-05-16 DE DE19691924844 patent/DE1924844A1/en active Pending
-
1970
- 1970-05-06 CH CH681170A patent/CH532569A/en not_active IP Right Cessation
- 1970-05-12 FR FR7017205A patent/FR2052386A5/fr not_active Expired
- 1970-05-14 NL NL7007016A patent/NL7007016A/xx unknown
- 1970-05-15 AU AU15134/70A patent/AU1513470A/en not_active Expired
- 1970-05-15 BE BE750463D patent/BE750463A/en unknown
- 1970-05-15 AT AT439670A patent/AT296300B/en not_active IP Right Cessation
- 1970-05-15 GB GB2357070A patent/GB1300431A/en not_active Expired
Cited By (1)
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 |
---|---|
FR2052386A5 (en) | 1971-04-09 |
AU1513470A (en) | 1971-11-18 |
NL7007016A (en) | 1970-11-18 |
CH532569A (en) | 1973-01-15 |
BE750463A (en) | 1970-11-16 |
AT296300B (en) | 1972-02-10 |
DE1924844A1 (en) | 1970-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |