EP0048251A1 - A process for the preparation of difunctional aldehydes - Google Patents
A process for the preparation of difunctional aldehydesInfo
- Publication number
- EP0048251A1 EP0048251A1 EP81900742A EP81900742A EP0048251A1 EP 0048251 A1 EP0048251 A1 EP 0048251A1 EP 81900742 A EP81900742 A EP 81900742A EP 81900742 A EP81900742 A EP 81900742A EP 0048251 A1 EP0048251 A1 EP 0048251A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aldehydes
- dihalides
- phase
- atom
- alkyl groups
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
Definitions
- the present invention describes an alkylation of aldehydes containing only one hydrogen atom at the ⁇ -carbon atom using alifatic or aralifatic dihalides as alkylating agents under PTC-conditions.
- a catalyst we use quaternary ammonium- or phosphonium salts.
- base we use alkali hydroxides and/or carbonates.
- the corresponding oxime has a m.p. of 167-169 C. After oxidation of the dialdehyde we obtained a diacid, m.p. 223-224°C (lit. 217°C) . After reduction of the dialdehyde we obtain 1.4-xylylyl-bis-2.2- dimethylethanol, m.p. 111-112 C.
- the structure was determined by IR and NMR and chlorine analysis.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8001124A SE8001124L (sv) | 1980-03-24 | 1980-03-24 | Alkyleringsprodukter av aldehyder |
SE8001124 | 1980-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0048251A1 true EP0048251A1 (en) | 1982-03-31 |
Family
ID=20340239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81900742A Withdrawn EP0048251A1 (en) | 1980-03-24 | 1981-03-23 | A process for the preparation of difunctional aldehydes |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0048251A1 (sv) |
SE (1) | SE8001124L (sv) |
WO (1) | WO1981002735A1 (sv) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2356866C3 (de) * | 1972-11-17 | 1987-01-22 | Kuraray Co., Ltd., Kurashiki, Okayama | Verfahren zur Herstellung von Methylheptenon |
JPS581091B2 (ja) * | 1973-12-27 | 1983-01-10 | 株式会社クラレ | チカンケトンノ セイゾウホウ |
DE2513996C3 (de) * | 1975-03-29 | 1979-12-20 | Basf Ag, 6700 Ludwigshafen | Cyc lopentenderivate |
US4068012A (en) * | 1976-11-11 | 1978-01-10 | International Flavors & Fragrances Inc. | Use of 1-(2-propenyl)-3-(4-methyl-3-pentenyl)-Δ3 -cyclohexene-1-carboxaldehyde and 1-(2-propenyl)-4-(4-methyl-3-pentenyl)-Δ3 -cyclohexene-1-carboxaldehyde |
US4010207A (en) * | 1976-01-15 | 1977-03-01 | International Flavors & Fragrances Inc. | Process for the alkylation of α, β-unsaturated aldehydes |
-
1980
- 1980-03-24 SE SE8001124A patent/SE8001124L/sv not_active Application Discontinuation
-
1981
- 1981-03-23 EP EP81900742A patent/EP0048251A1/en not_active Withdrawn
- 1981-03-23 WO PCT/SE1981/000092 patent/WO1981002735A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8102735A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1981002735A1 (en) | 1981-10-01 |
SE8001124L (sv) | 1981-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19820604 |