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1. (EP0559789) PROCESS FOR THE PREPARATION OF -g(a)-ALKYL LACTONES.

Office : European Patent Office
Application Number: 92901529 Application Date: 25.11.1991
Publication Number: 0559789 Publication Date: 15.09.1993
Publication Kind : A1
Designated States: BE, DE, FR, GB, IT, NL
Prior PCT appl.: Application Number:US1991008745 ; Publication Number: Click to see the data
IPC:
C 07D
C07D 307/33
C07D 309/30
C11B 9/00
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
307
Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
02
not condensed with other rings
26
having one double bond between ring members or between a ring member and a non-ring member
30
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
32
Oxygen atoms
33
in position 2, the oxygen atom being in its keto or unsubstituted enol form
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
307
Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
02
not condensed with other rings
26
having one double bond between ring members or between a ring member and a non-ring member
30
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
32
Oxygen atoms
33
in position 2, the oxygen atom being in its keto or unsubstituted enol form
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
309
Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
16
having one double bond between ring members or between a ring member and a non-ring member
28
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
30
Oxygen atoms, e.g. delta-lactones
C CHEMISTRY; METALLURGY
11
ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
B
PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
9
Essential oils; Perfumes
CPC:
C07D 307/33
C07D 309/30
C07D 315/00
C11B 9/0073
Applicants: HENKEL CORP
Inventors: REBROVIC LOUIS
HARRIS EUGENE G
Priority Data: 07619797 29.11.1990 US
Title: (DE) VERFAHREN ZUR HERSTELLUNG VON ALPHA-ALKYL-LACTONEN.
(EN) PROCESS FOR THE PREPARATION OF -g(a)-ALKYL LACTONES.
(FR) PROCEDE DE PREPARATION D'ALPHA-ALKYL-LACTONES.
Abstract:
(EN) Process for the preparation of $g(a)-alkyl lactones by the steps of first reacting an $g(a)-acyl lactone, an aldehyde, and an alkali metal hydroxide together to form an $g(a)-alkylidene lactone, and then hydrogenating the $g(a)-alkylidene lactone.
(FR) Procédé de préparation d'$g(a)-alkyl-lactones, consistant à faire réagir entre eux une $g(a)-acyl-lactone, un aldéhyde et un hydroxyde de métal alcalin afin de former une $g(a)-alkylidène-lactone, que l'on hydrogène par la suite.
Also published as:
JPH06503328WO/1992/009590