| (19) |
 |
|
(11) |
EP 1 510 512 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
| (48) |
Corrigendum issued on: |
|
22.06.2005 Bulletin 2005/25 |
| (43) |
Date of publication: |
|
02.03.2005 Bulletin 2005/09 |
| (22) |
Date of filing: 23.08.2004 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
|
|
Designated Extension States: |
|
AL HR LT LV MK |
| (30) |
Priority: |
27.08.2003 JP 2003302814
05.09.2003 JP 2003313903
|
| (71) |
Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC. |
|
Chiyoda-ku, Tokyo (JP) |
|
| (72) |
Inventors: |
|
- Sugawara, Tomohiro c/oMitsubishi Gas Chem. Co.,Inc
Kurashiki-shi, Okayama (JP)
- Zaima, Fumiya c/o Mitsubishi Gas Chem. Co.,Inc.
Kurashiki-shi, Okayama (JP)
- Okoshi, Atsushi c/o Mitsubishi Gas Chem. Co.,Inc.
Kurashiki-shi, Okayama (JP)
- Kato, Kinji c/o Mitsubishi Gas Chem. Co.,Inc.
Kurashiki-shi, Okayama (JP)
- Inari, Masato c/o Mitsubishi Gas Chem. Co.,Inc.
Kurashiki-shi, Okayama (JP)
|
| (74) |
Representative: Gille Hrabal Struck Neidlein Prop Roos |
|
Patentanwälte, Brucknerstrasse 20
40593 Düsseldorf
40593 Düsseldorf (DE) |
|
| |
|
| (54) |
Process for producing alicyclic aldehydes |
(57) In the production of an alicyclic aldehyde, a starting aromatic aldehyde is converted
into an aromatic acetal for protecting the formyl group. The aromatic ring of the
aromatic acetal is then hydrogenated to convert the aromatic acetal into an alicyclic
acetal, which is then hydrolyzed to cleave the acetal protecting group to obtain the
aimed alicyclic aldehyde.